CN114340847A - Grinding tool device, grinding device and grinding tool system - Google Patents
Grinding tool device, grinding device and grinding tool system Download PDFInfo
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- CN114340847A CN114340847A CN202080062163.6A CN202080062163A CN114340847A CN 114340847 A CN114340847 A CN 114340847A CN 202080062163 A CN202080062163 A CN 202080062163A CN 114340847 A CN114340847 A CN 114340847A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/02—Backings, e.g. foils, webs, mesh fabrics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
- B24D9/08—Circular back-plates for carrying flexible material
- B24D9/085—Devices for mounting sheets on a backing plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
- B24D9/08—Circular back-plates for carrying flexible material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention is based on a grinding tool device, in particular a grinding plate, comprising: at least one carrying unit (16 a; 16 b; 16 c; 16 d; 16 e; 16f), in particular a supporting disc or a supporting plate; and at least one fastening unit (18 a; 18 b; 18 c; 18 d; 18 e; 18f) for releasably fastening a grinding means (20 a; 20 b; 20 c; 20 d; 20 e; 20f), in particular grinding sandpaper or grinding nonwoven, to a carrier unit (16 a; 16 b; 16 c; 16 d; 16 e; 16f), wherein the carrier unit (16 a; 16 b; 16 c; 16 d; 16 e; 16f) comprises at least one carrier element (22 a; 22 b; 22 c; 22 d; 22 e; 22f) on which the grinding means (20 a; 20 b; 20 c; 20 d; 20 e; 20f) are arranged by means of the fastening unit (18 a; 18 b; 18 c; 18 d; 18 e; 18 f). It is proposed that the carrier element (22 a; 22 b; 22 c; 22 d; 22 e; 22f) is made of a material having a melting temperature of more than 180 ℃.
Description
Background
DE 102010003616 a1 discloses a grinding tool device having at least one carrier unit and at least one fastening unit for releasably fastening a grinding means to the carrier unit, wherein the carrier unit comprises at least one carrier element on which the grinding means is arranged by the fastening unit.
Disclosure of Invention
The invention is based on a grinding tool device, in particular a grinding plate, having: at least one carrying unit, in particular a supporting disc or a supporting plate; and at least one fastening unit for releasably fastening a grinding means, in particular a grinding sandpaper or a grinding nonwoven, to the carrier unit, wherein the carrier unit comprises at least one carrier element on which the grinding means is arranged by means of the fastening unit.
It is proposed here that the carrier element is composed of a material having a melting temperature of more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the material of which the carrier element is made has a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and particularly advantageously less than 260 ℃. However, it is also conceivable for the material of which the carrier element is made to have a melting temperature of more than 350 ℃. Preferably, the material constituting the carrying element has a melting temperature of in particular less than 350 ℃ and more than 180 ℃, in particular less than 300 ℃ and more than 200 ℃, preferably less than 280 ℃ and more than 220 ℃, particularly preferably less than 280 ℃ and more than 240 ℃ and very particularly preferably less than 280 ℃ and more than 250 ℃. Preferably, the carrier element is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the carrier element is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and particularly advantageously less than 260 ℃. Preferably, the carrier element is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃ and more than 180 ℃, in particular less than 300 ℃ and more than 200 ℃, preferably less than 280 ℃ and more than 220 ℃, particularly preferably less than 280 ℃ and more than 240 ℃ and very particularly preferably less than 280 ℃ and more than 250 ℃. "the support element is at least substantially completely composed of a material" is to be understood in particular to mean that the support element is composed of the material to at least 90% by volume, preferably to at least 95% by volume and particularly preferably to at least 98% by volume. In particular, the material of the carrier element can, for example, be a metal, in particular a metal alloy, a ceramic, a composite material and/or a plastic. The carrier element is preferably, in particular at least largely, plate-shaped, wherein in particular two at least partially opposite sides of the carrier element are oriented parallel to a main plane of extension of the carrier element. The "main plane of extension" of the component, in particular of the support element, is to be understood in particular as a plane which is parallel to the largest side of the smallest imaginary cuboid which just completely encloses the structural unit. Preferably, the carrier element has at least one contact surface, which in particular at least largely forms a planar surface. Preferably, the fastening unit is arranged on the carrier element via the contact surface. In particular, the contact surface is oriented parallel to the main plane of extension of the carrier element.
In particular, the grinding tool arrangement comprises at least one connecting region for connecting at least the grinding tool arrangement, in particular at least the carrier unit and the fastening unit, to a grinding machine tool, in particular a multi-function machine tool which can be driven in an oscillating manner. Preferably, the contact surface is arranged on a side of the carrier unit, in particular of the carrier element, facing away from the connection region. However, it is also conceivable for the contact surface to be arranged on the side of the carrier element facing the connection region. It is conceivable for the connecting region to be composed of a material having a melting temperature of at least greater than 180 ℃, preferably greater than 200 ℃, particularly preferably greater than 220 ℃, very particularly preferably greater than 240 ℃ and particularly advantageously greater than 250 ℃. In particular, it is conceivable for the connecting region to be composed of a material having a melting temperature of less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the connecting region is composed of a material having a melting temperature of less than 350 ℃ and more than 180 ℃, in particular less than 300 ℃ and more than 200 ℃, preferably less than 280 ℃ and more than 220 ℃, particularly preferably less than 280 ℃ and more than 240 ℃ and very particularly preferably less than 280 ℃ and more than 250 ℃. It is conceivable for the connecting region to consist of the same material as the carrier element. Preferably, the connecting region is connected to the support unit, in particular the support element, at least in a rotationally fixed manner, in particular is formed integrally with the support unit, in particular the support element. "integral" is to be understood in particular to mean at least a material-to-material connection, for example by a welding process, an adhesive process, an injection molding process and/or other processes which appear to be of interest to the person skilled in the art, and/or advantageously to mean a formation in one piece, for example by production from a casting and/or by production in a single-component or multi-component injection molding process and advantageously from a single blank. It is conceivable for the connecting region to be constructed in multiple parts. In particular, the grinding tool device comprises at least one movement axis about which at least the carrier unit, in particular the carrier element, the fastening unit and/or the grinding means, can be moved at least partially, in particular can be driven by means of a drive unit of the grinding machine tool. Preferably, the carrier element is arranged transversely, in particular perpendicularly, to the movement axis, wherein in particular a main extension plane of the carrier element is arranged perpendicularly to the movement axis. An orientation of a straight line and/or a plane, in particular a main plane of extension of the carrier element, which is "perpendicular" to a further straight line or a further plane, in particular an axis of movement, is to be understood in particular as meaning that the straight line or the plane encloses an angle of 90 ° with the further straight line or the further plane, in particular viewed in the projection plane, and that the angle has a maximum deviation of in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °. In particular, manufacturing tolerances should be taken into account in the case of components which are arranged, in particular, perpendicular to one another. Preferably, the contact surface is oriented perpendicular to the axis of movement. Preferably, the connecting region and/or the carrier element delimit at least one, in particular a plurality of, form-locking slots, by means of which at least the carrier unit and/or the connecting region can be fastened to the grinding machine tool, in particular to a tool receptacle of the grinding machine tool. Preferably, the connecting region is provided for connecting a rotary vibration drive of the grinding tool. In particular, the grinding tool device is provided for oscillating a reciprocating motion about a movement axis by means of a rotary oscillating drive at a frequency of 5000 to 25000 oscillations/minute and at a deflection angle of 0.5 ° to 7 °. Preferably, the constant loading of the grinding tool arrangement acts in the opposite direction about the axis of movement during the oscillating movement of the grinding tool arrangement about the axis of movement. In particular, during the oscillating movement of the grinding tool arrangement, high frictional heat occurs with the above-mentioned deflection angles, in particular, as a result of which the grinding means preferably moves over a small surface compared to larger deflection angles.
Preferably, the carrier unit has exactly one, in particular plate-shaped, carrier element. However, it is also conceivable for the support unit to have more than one support element, wherein in particular the support elements are connected to one another mechanically or by material locking. Preferably, the carrier element delimits at least one slot, in particular a plurality of slots, which are provided for conducting heat away from the grinding means and/or the carrier element to the surroundings surrounding the carrier unit. Preferably, the carrier element is designed such that the slot extends from the side on which the contact surface is arranged to the side of the carrier element facing the connection region, preferably over the maximum thickness of the carrier element. In particular in a configuration of the grinding tool arrangement (in which the carrier element delimits a plurality of slots), it is conceivable to: the carrier element is designed in such a way that the notches are arranged evenly distributed over the contact surface of the carrier element, in particular around the connecting region and/or the axis of movement. In particular, the carrier element has at least one surface which delimits the slot. Preferably, the surface bounding the slot is arranged, in particular, at least partially perpendicular to the contact surface. However, it is also conceivable for the surface bounding the slot to be arranged, in particular, at least partially transversely to the contact surface and/or the movement axis. It is conceivable that the surfaces of the carrier element which delimit the slot, in particular as viewed in the main plane of extension of the carrier element, have at least the same basic shape. Preferably, the recess delimited by the carrier element is provided for at least increasing the diffusion of heat generated during grinding, in particular in the machining region of the grinding means, from the contact surface to the carrier unit, in particular to the side of the carrier element facing away from the fastening unit, preferably compared to a configuration of the carrier element which is designed without a recess.
The configuration of the grinding tool device according to the invention enables an advantageously high degree of robustness and stability, in particular with respect to temperature-induced loads acting on the carrier unit, in particular on the carrier element. Advantageously high processing accuracy can be achieved, in particular because an advantageously high resistance of the carrier element, for example with respect to temperature-induced deformations and/or damage, can be achieved
This ensures a processing surface which is advantageously permanently and uniformly formed. It is advantageously possible to prevent wear phenomena of the carrier element, such as partial melting, which can occur due to high heat generation, in particular under increased pressing pressure and/or for a longer service life. This advantageously ensures a secure connection of the grinding means to the carrier element.
It is furthermore proposed that the fastening unit comprises at least one fastening element for fastening the grinding means on the carrier unit, in particular on the carrier element, which fastening element is in particular at least largely or at least substantially completely composed of a material having a melting temperature of more than 160 ℃, in particular more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the fastening element is at least largely or at least substantially completely composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the fastening element is at least largely or at least substantially completely composed of a material having a melting temperature of less than 350 ℃ and more than 160 ℃, in particular less than 300 ℃ and more than 180 ℃, preferably less than 280 ℃ and more than 200 ℃, particularly preferably less than 280 ℃ and more than 220 ℃ and very particularly preferably less than 280 ℃ and more than 240 ℃. Preferably, the fastening elements of the fastening unit are composed of a different material than the carrier element. For example, the fastening elements of the fastening unit are configured as hook-and-loop connections, as particularly releasable adhesive connections, as hooks, clips, negative pressure elements (unterdrucker) or the like. Preferably, the fastening element of the fastening unit has a basic shape, as viewed in a main plane of extension of the fastening element, wherein at least an outer contour of the basic shape of the fastening element corresponds to an outer contour of the basic shape of the carrier element. Preferably, the fastening element of the fastening unit is designed to correspond to the fastening element of the grinding means. In particular, in a configuration of the grinding tool device in which the fastening elements of the fastening unit are configured as part of a hook-and-loop connection, the fastening elements of the fastening unit are preferably, in particular at least largely, composed of a fiber-reinforced thermoplastic. In particular, in a configuration of the grinding tool device in which the fastening element has a different configuration than the hook-and-loop connection, the fastening unit preferably has at least one adhesive element which is provided for fastening the fastening element on the carrier element. In this case, an advantageously high robustness and stability of the fastening element of the fastening unit can be achieved, in particular with respect to temperature-induced loads acting on the carrier element of the carrier unit. In this case, an advantageously reliable connection of the grinding means to the carrier unit, in particular to the carrier element, can be achieved.
Furthermore, it is proposed that the fastening unit comprises at least one, in particular the above-mentioned adhesive element, which is provided for the exchangeable fastening of the fastening unit, in particular of the fastening unit, preferably of the above-mentioned fastening element configured as a hook-and-loop connection (klettvertinbunding), to the carrier element. The adhesive element is configured, for example, as an adhesive means. Preferably, the adhesive element is configured to be releasable again. Preferably, the adhesive element is provided for the cohesive connection of the fastening element to the carrier element. Preferably, the adhesive element extends at least for the most part over the side of the fastening element facing the carrier element and/or over the side of the carrier element facing the fastening element. In particular, the adhesive elements are arranged uniformly distributed on the side of the fastening element facing the carrier element and/or on the side of the carrier element facing the fastening element. Preferably, the adhesive element is arranged on the carrier element on the contact surface of the carrier element. Particularly preferably, the adhesive element is composed of a material having a melting temperature of more than 160 ℃, in particular more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃ and very particularly preferably more than 240 ℃. Preferably, the adhesive element is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the adhesive element is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃ and more than 160 ℃, in particular less than 300 ℃ and more than 180 ℃, preferably less than 280 ℃ and more than 200 ℃, particularly preferably less than 280 ℃ and more than 220 ℃ and very particularly preferably less than 280 ℃ and more than 240 ℃. Preferably, the adhesive element has an at least substantially constant holding force, in particular an adhesive force, at a temperature below the melting temperature of the material as the adhesive element. In this case, an advantageously secure connection of the fastening element to the carrier element can be ensured. In this case, an advantageously reliable connection of the grinding means to the carrier element can be ensured, in particular because the fastening elements of the fastening unit can be replaced, for example, after wear phenomena caused by temperature or wear. The use of a plurality of different grinding means combinations can be achieved in particular by exchangeable fastening of the fastening element. In this case, advantageously low maintenance costs can be achieved, in particular because the fastening element can be exchanged independently of the carrier element, wherein the carrier element is reusable.
It is furthermore proposed that the carrier unit, in particular the carrier element, has a maximum thickness perpendicular to the above-mentioned contact surface of the carrier unit and the fastening unit of at most 5mm, preferably at most 3mm, in particular at most 2mm, particularly preferably at most 1mm and very particularly preferably at most 0.8 mm. Preferably, the carrier element has a flatness of at most 8%, preferably at most 4%, and particularly preferably at most 2% of the maximum thickness at the contact surface. In particular, the carrier element is designed such that the maximum thickness extends from the contact surface of the carrier element to an abutment surface, at which the connection region abuts against the carrier element. It is conceivable that the fastening unit, in particular the side of the fastening element of the fastening unit, which is perpendicular to the contact surface of the fastening element of the fastening unit facing the carrier element, has a maximum thickness of at most 4mm, preferably at most 3mm and particularly preferably at most 2 mm. In particular, the side of the adhesive element perpendicular to the contact surface of the adhesive element facing the carrier element has a maximum thickness of at most 3mm, preferably at most 2mm and particularly preferably at most 1 mm. An advantageously compact grinding tool arrangement can be realized in this case. In particular, advantageously high machining accuracy can be achieved by a small maximum thickness of the carrier unit, in particular of the carrier element.
Furthermore, it is proposed that the grinding tool device has at least one heat transfer coating which is arranged between the carrier unit, in particular the carrier element, and the fastening unit, preferably on the contact surface, and/or on a side of the fastening unit, in particular of the fastening element of the fastening unit, which side faces away from the carrier unit, in particular the carrier element. A "heat transfer coating" is to be understood to mean, in particular, a coating which is provided to increase the heat dissipated by the components of the grinding tool arrangement, in particular the carrier unit and/or the fastening unit, compared to an identical uncoated component. Preferably, the heat transfer coating of the grinding tool device bears at least substantially over the entire surface against the contact surface and/or against the fastening unit, in particular the side of the fastening element of the fastening unit, facing away from the carrier unit, in particular the carrier element. A "substantially full" contact of a component, in particular a heat transfer coating of a grinding tool arrangement, against another component, in particular a fastening element of a carrier unit, a carrier element, a fastening unit and/or a fastening unit, is to be understood in particular to mean that the component has at least one surface which is at least 90%, preferably at least 84%, and particularly preferably at least 98%, in contact against the other component. Preferably, the heat transfer coating of the grinding tool device has a greater heat conduction characteristic than the carrier unit, in particular the carrier element, and/or the fastening unit, in particular the fastening element of the fastening unit. A "heat-conducting characteristic" is to be understood to mean, in particular, a characteristic of the component, in particular of the heat-conducting coating, the carrier unit and/or the fastening unit, which influences the heat-conducting capacity of the component. Preferably, the heat conduction characteristic is proportional to the amount of heat dissipated by the component per time interval. In particular, the heat conductivity characteristic variable forms the heat conductivity, in particular the heat conductivity, an equivalent thermal resistance, a length-related heat conductivity, a point-related heat conductivity, etc. For example, the heat transfer coating is at least partially composed of a metal, in particular a semi-precious metal, preferably copper, a precious metal and/or an alkaline earth metal, a carbon compound, in particular graphene (Graphen), diamond, and/or graphite close to graphene, or the like. Preferably, the heat transfer coating forms a particularly planar, thin layer, wherein the heat transfer coating has a maximum thickness of, in particular, at most 1mm, preferably at most 0.5mm and particularly preferably at most 0.3 mm. It is also conceivable for the heat transfer coating to form a structure which is arranged, in particular, uniformly distributed over the contact surface. Alternatively or additionally, it is conceivable for the heat transfer coating to be vapor-deposited on the contact surfaces and/or the fastening elements of the fastening unit or to be applied by an electrolytic method. In this case, an advantageously high robustness and stability of the grinding tool arrangement can be achieved, in particular because the heat generated at the grinding means can be dissipated advantageously rapidly by the heat transfer coating. Advantageously high heat conduction, heat convection and/or heat diffusion can be achieved in grinding applications.
It is furthermore proposed that the fastening unit comprises at least one fastening element, in particular the fastening element described above, wherein the fastening element of the fastening unit rests at least substantially over the entire surface on the carrier element, in particular the contact surface, preferably by means of an adhesive element. Preferably, the fastening unit, in particular the fastening element of the fastening unit, delimits a recess, which is provided for conducting heat away from the grinding means and/or the carrier unit to the surroundings of the fastening unit, in particular the fastening element of the fastening unit. Preferably, the fastening unit, in particular the fastening element of the fastening unit, is designed such that the recess extends from the side of the fastening unit on which the fastening element is arranged on the contact surface over the maximum thickness of the fastening unit, in particular of the fastening element of the fastening unit, to the side of the fastening unit, in particular of the fastening element of the fastening unit, facing the grinding means. It is conceivable that the edges of the fastening elements of the fastening unit delimiting the recess, viewed along the contact surface, at least partially overlap and/or enclose the slot delimited by the carrier element and/or the form-locking slot. It is conceivable for the fastening unit and the fastening element to be designed such that the edge of the fastening element of the fastening unit delimiting the recess and the edge of the delimiting and/or form-fitting recess of the carrier element, viewed along the contact surface, are arranged at least largely coincident with each other. In this case, an advantageously high robustness and stability of the grinding tool device can be achieved, in particular because an advantageously reliable connection of the fastening element of the fastening unit to the carrier element can be achieved.
Furthermore, it is proposed that the grinding tool arrangement comprises at least one protective unit which is arranged on the carrier element and is provided for protecting the workpiece, the carrier element or the external unit, in particular from damage, in particular during the grinding process, and/or for damping, in particular direct, impacts of the carrier element on the workpiece or on the external unit. Preferably, the protective unit has at least one protective element, which is arranged in particular on the outer side of the carrier element, in particular on an outer edge of the carrier element and/or on an outer surface of the carrier element facing away from the grinding means and/or the contact surface. In particular, the protective element has, in particular, an outer edge or surface, viewed perpendicular to the main plane of extension of the support element, which has a greater minimum distance from the axis of movement than the outer edge of the support element. Preferably, the protective element is arranged at a distance from the contact surface and/or the grinding means. Preferably, the outer surface of the carrier element is oriented at least for the most part transversely, in particular perpendicularly or parallel, to the main plane of extension of the carrier element. In particular, in a configuration in which the outer surface of the carrier element is oriented transversely, in particular perpendicularly, to the main plane of extension of the carrier element, the outer surface of the carrier element is arranged, in particular at least for the most part, about the axis of movement. In particular, its outer edge is arranged in the main extension plane of the carrier element and extends at least substantially completely around the movement axis. In particular, the external unit is designed to limit objects, such as walls or covers, body parts of the user, etc., in particular of the workpiece to be processed. Preferably, the outer edge and/or the outer surface of the carrier element are arranged at a distance from the contact surface. However, it is also conceivable for the outer surface of the carrier element to at least partially delimit the contact surface. Preferably, the protective element is arranged along the outer edge and/or the outer surface of the carrier element at least for the most part, in particular at least substantially completely, around the axis of movement. It is conceivable that the protective element at least partially surrounds the carrier element, in particular, in the region of the outer edge, as viewed perpendicular to the main plane of extension of the carrier element, wherein in particular the protective element surrounds the outer edge of the carrier element. In particular, it is preferred that the protective element is arranged on the carrier element at least for the most part, in particular completely, on one side of a plane of the carrier unit which extends along the contact surface and/or along an outer surface of the carrier element which is oriented parallel to the contact surface, viewed perpendicularly to the main plane of extension of the carrier element. In particular in a configuration of the protective unit in which the protective element surrounds and/or surrounds the outer edge, the protective element preferably extends at least partially, in particular at least largely, over the maximum thickness of the carrier element at the outer edge. It is conceivable for the protective element to bear only against an outer surface of the carrier element oriented transversely, in particular perpendicularly, to the contact surface or against an outer surface of the carrier element oriented parallel to the contact surface. In particular, in a configuration of the protective unit in which the protective element bears exclusively against an outer surface of the carrier element oriented parallel to the contact surface, the protective element preferably extends from the movement axis beyond the outer edge of the carrier element. Preferably, the protective element has a maximum thickness, in particular, of at least 0.3mm, preferably at least 0.5mm, preferably at least 0.8mm and particularly preferably at least 1mm, in particular, as viewed perpendicular to the main plane of extension of the carrier element. Preferably, the maximum thickness of the protective element is at most 1cm, preferably at most 0.5mm and preferably at most 3 mm. In particular, the protective element rests against the carrier element along the outer edge and/or the outer surface of the carrier element. Preferably, the protective element has an outer edge or surface, in particular, as viewed perpendicular to the main plane of extension of the support element, which has a greater minimum distance from the axis of movement than the outer edge of the support element. Preferably, the protective element is integrally connected to the carrier element, in particular by means of an adhesive connection, or is fastened to the carrier element by means of a form-locking and/or force-locking connection. For example, it is conceivable that the carrier element has at least one or more form-locking and/or force-locking projections in the region of the outer edges and/or outer surfaces of the carrier element, which projections are provided for fastening the protective element. Particularly preferably, the protective unit, in particular the protective element, is composed of a material having a melting temperature of more than 160 ℃, in particular more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃ and very particularly preferably more than 240 ℃. Preferably, the protective unit, in particular the protective element, is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the protective unit, in particular the protective element, is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃ and more than 160 ℃, in particular less than 300 ℃ and more than 180 ℃, preferably less than 280 ℃ and more than 200 ℃, particularly preferably less than 280 ℃ and more than 220 ℃ and very particularly preferably less than 280 ℃ and more than 240 ℃. Preferably, the protective unit, in particular the protective element, is made of plastic, in particular thermoplastic, or polyamide and/or rubber. For example, the protective element, in particular the protective element, is made of a fiber-reinforced plastic, a partially aromatic polyamide, in particular of the type Grivory GV-5H, or of polyphenylene sulfide. For example, it is conceivable for the protective element to be designed as a rubber lip. Preferably, the protective element is made of a material having a lower rigidity than the carrier element, in particular the material of which the carrier element is made. It is conceivable for the protective unit, in particular the protective element, to be designed to be replaceable, wherein in particular the protective unit, in particular the protective element, can be separated from the carrier element without residues and/or without damage. Alternatively, it is conceivable that the protective unit comprises more than one protective element, which is arranged along the outer edge and/or the outer surface of the carrier element. In particular in a configuration in which the protective unit has more than one protective element, it is conceivable for the protective element to cover only partially the outer edge and/or the outer surface of the carrier element, for example in the corner region of the basic shape of the carrier element. The support element can advantageously be protected against unintentional damage during the grinding process, in particular on the outer edge and/or the outer surface of the support element. It is advantageously possible to prevent unintentional damage, in particular scratching or discoloration, of the workpiece or of the external unit.
It is furthermore proposed that the protective unit, in particular the protective element of the protective unit, has a melting temperature of more than 220 ℃, preferably more than 240 ℃ and preferably more than 260 ℃. It is advantageously possible to prevent unintentional damage to the carrier element, in particular on the outer edges and/or the outer surfaces of the carrier element, due to temperature-induced influences during the grinding process. Unintentional damage, in particular melting or wear, of the workpiece or of the external unit can advantageously be prevented.
It is furthermore proposed that the protective unit comprises at least one protective element, in particular as described above, wherein the protective element, viewed along the center axis of the carrier element and/or the protective element, has in particular the above-mentioned outer edge, which has a greater minimum distance from the center axis of the carrier element than in particular the above-mentioned outer edge of the carrier element. The outer edge of the support element can advantageously be prevented by the protective element from unintentionally striking the workpiece or an object surrounding the workpiece. Advantageously, low maintenance costs can be achieved, in particular because the protective element can be designed to be replaceable and/or made of a material that is less costly than the carrier element. In particular, the axis of movement comprises the central axis of the carrier element. Preferably, the central axis of the carrier element and/or the protective element has a geometric center of the carrier element shape, viewed in the main plane of extension of the carrier element. Preferably, the central axis of the carrier element and/or the protective element is arranged at least substantially perpendicular to the main plane of extension of the carrier element. Preferably, the outer edge of the carrier element, viewed in the main plane of extension of the carrier element, is part of the outer contour of the carrier element.
It is furthermore proposed that the protective unit comprises at least one, in particular the above-mentioned protective element, which has at least one outer surface which, compared to the, in particular the above-mentioned outer edge of the carrier element, has a larger maximum spacing relative to the central axis, in particular substantially perpendicular to the carrier element and/or the protective element, and which, in particular when the protective element is arranged on the carrier element, is configured at least substantially obliquely relative to the central axis of the carrier element and/or the protective element, as viewed in a sectional plane which includes the central axis of the carrier element and/or the protective element. It is advantageously possible to prevent the protective element from inadvertently striking the workpiece or an object surrounding the workpiece when the grinding tool and/or the grinding tool arrangement fastened thereto is tilted. Preferably, the outer surface of the protective element is at least substantially obliquely oriented with respect to the contact surface of the carrier element. "substantially inclined" is to be understood to mean, in particular, an orientation of a straight line, a plane or a direction, in particular of at least one plane extending tangentially to the outer surface of the protective element, viewed in a sectional plane of the protective element including the center axis, relative to a further straight line, a further plane or a reference direction, in particular the center axis, a straight line extending at least substantially parallel to the center axis, and/or a contact surface, wherein the straight line, plane or direction, viewed in particular in a projection plane, lies at an angle lying in an angular range of 8 ° to 92 °, preferably in an angular range of 15 ° to 85 °, and preferably in an angular range of 20 ° to 80 °. In particular, an at least substantially inclined orientation of the outer surface of the protective element with respect to the central axis is understood to mean an orientation differing from a parallel orientation and from a perpendicular orientation. Preferably, the outer edge of the protective element, viewed in particular in the main plane of extension of the protective element, delimits the outer surface of the protective element at least partially, in particular at least substantially completely, around the central axis of the carrier element and/or around the central axis of the protective element. Preferably, the central axis of the protective element comprises the central axis and/or the movement axis of the carrier element in the state in which at least one of the protective elements is arranged on the carrier element. In particular, the central axis of the protective element is arranged at least substantially perpendicularly to the main extension plane of the protective element. Preferably, the main plane of extension of the protective element is arranged at least substantially parallel to the main plane of extension of the carrier element in a state in which at least one of the protective elements is arranged on the carrier element. Preferably, the protective element has a connecting direction, wherein the protective element is provided for being arranged, in particular fastened, on the carrier element by a movement along the connecting direction. Preferably, the connecting direction is arranged at least substantially parallel to the central axis of the carrier element and/or the protective element. In particular, the connection direction is oriented at least substantially perpendicular to the main extension plane of the protection element. Preferably, the outer surface of the protective element has an angle in the angular range of 8 ° to 92 °, preferably in the angular range of 15 ° to 85 ° and preferably in the angular range of 20 ° to 80 ° relative to the central axis of the carrier element and/or the protective element, which angle is developed in particular along the connecting direction by a particularly virtual intersection of a straight line which runs at least substantially parallel to the central axis and through the outer edge of the protective element and the outer surface of the protective element. Alternatively or additionally, the protective element has at least one further outer surface which, compared to the outer edge of the carrier element, has a greater minimum spacing from the center axis of the carrier element and which, in particular in the state in which at least one of the protective elements is arranged on the carrier element, is at least substantially obliquely configured relative to the center axis of the carrier element, viewed in a sectional plane which includes the center axis of the carrier element. Preferably, the further outer surface of the protective element has an angle in the angular range of 8 ° to 92 °, preferably in the angular range of 15 ° to 85 ° and preferably in the angular range of 20 ° to 80 ° relative to the central axis of the carrier element and/or the protective element, which angle is developed, in particular counter to the connecting direction, by a particularly virtual intersection of a straight line running at least substantially parallel to the central axis and through the outer edge of the protective element with the further outer surface. Preferably, the further outer surface of the protective element is arranged on the side of the protective element facing away from the carrier element, in particular the contact surface. In particular, the other outer surface of the protective element is arranged on the underside of the protective element. The further outer surface of the protective element preferably delimits the contour of the protective element, in particular in the connecting direction, at least substantially perpendicularly to the central axis of the carrier element and/or the protective element. Preferably, the outer surface of the protective element and the further outer surface are arranged spaced apart from each other on the protective element. However, it is also conceivable for the outer surface of the protective element and the further outer surface to delimit each other at least partially, in particular in each case on one side. Preferably, the outer surface of the protective element and/or the further outer surface are formed in a planar manner. However, it is also conceivable for the outer surface of the protective element and/or the further outer surface to be curved.
It is furthermore proposed that the protective unit comprises at least one, in particular the above-mentioned protective element, which extends at least substantially perpendicularly to the carrier element and/or to the central axis of the protective element, in particular at least for the most part, in particular at least substantially completely, over the maximum extension of the carrier element. An advantageously stable and robust configuration of the protective element can be achieved here, in particular because the protective element can be advantageously supported by the greatest extension of the carrier element. An advantageously large-scale protection of the support element by the protection unit can be achieved in this case. Preferably, the protective element at least largely, in particular at least substantially completely, surrounds the carrier element, in particular as viewed along the central axis of the carrier element and/or the protective element, in particular in the assembled state of the protective unit. Preferably, the protective element extends at least for the most part, in particular at least substantially completely, along the in particular upper outer edge of the carrier element, in particular in the assembled and/or arranged state of the protective unit on the carrier element, wherein the protective element in particular rests on the outer edge of the carrier element. It is conceivable for the protective unit to comprise more than one protective element, which in each case rest against an outer edge of the carrier element and are in particular designed at a distance from one another. However, it is also conceivable for the protective elements to be arranged adjacent to one another and/or to be connected to one another for arrangement and/or fastening to the carrier element.
Furthermore, it is proposed that the carrier element forms at least one holding means which is provided for the non-positive and/or positive holding of the protective unit, in particular of the protective element of the protective unit, on the carrier element. In this case, an advantageously stable connection between the carrier element and the protective element can be achieved. In this case, additional fastening elements for holding the protective element on the carrier element can advantageously be dispensed with. This makes it possible to achieve a low number of components of the grinding tool arrangement and thus also advantageously low production costs. Particularly preferably, the carrier element and the at least one holding means are each integrally formed. In particular, the holding means are designed as projections, in particular pins, ridges or the like, or as notches. In particular, the protective element is designed in correspondence with the carrier element and the holding means and is provided for a force-fitting and/or form-fitting connection with the carrier element, in particular by means of the holding means. Preferably, the protective element forms at least one corresponding retaining means which is provided for interacting with the retaining means for the force-fitting and/or form-fitting connection of the protective element to the carrier element, in particular when the protective element is arranged on the carrier element. Particularly preferably, the protective element and the at least one corresponding retaining means are constructed in one piece. For example, the corresponding holding means are configured, in particular in a manner corresponding to the holding means, as a projection, in particular a pin, a bulge or the like, or as a notch. Preferably, the holding means are arranged, in particular as viewed from the center axis of the carrier element, in an outer edge region of the carrier element, which outer edge region is in particular adjacent to an outer edge of the carrier element. In particular, the corresponding holding means is arranged in the outer edge region of the protective element, in particular as viewed from the central axis of the protective element. In particular, the at least one holding means is arranged on a side of the carrier element facing away from the contact surface. Preferably, the at least one corresponding holding means is arranged on a side of the protective element arranged in the connecting direction. It is contemplated that the carrier element comprises more than one retaining means. In particular, it is conceivable for the protective element to comprise more than one corresponding retaining means. In particular, the number of holding means corresponds to the number of corresponding holding means. In a preferred embodiment, the holding means and/or the corresponding holding means are arranged uniformly distributed around the central axis of the carrier element and/or the protective element.
It is furthermore proposed that the fastening unit comprises at least one intermediate element which is provided for an at least substantially non-destructive, at least substantially tool-free removable and/or exchangeable arrangement between the carrier element and the grinding means, wherein the intermediate element is composed of a material having a melting temperature of more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, completely particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. In this case, an advantageously high degree of flexibility of the grinding tool arrangement can be achieved, in particular with regard to the application possibilities and combinations with differently configured grinding means, preferably while simultaneously achieving an advantageously constant high resistance with regard to temperature-induced damage. Advantageous application-and/or situation-specific settings of the external dimensions of the grinding tool arrangement, the density of the grinding tool arrangement, the shape of the grinding tool arrangement (in particular with regard to the support of differently shaped grinding means), the heat dissipation to the carrier element, etc. can be achieved in this case. For example, the rounded shape of the carrier element can be advantageously easily and quickly changed over for grinding corners by means of an intermediate element, in particular without dismantling the entire grinding tool arrangementIs an at least partially angular support surface for receiving a grinding device. "essentially without destruction" is to be understood in particular to mean that a component, in particular an intermediate element, is not irreversibly changed, in particular damaged, plastically deformed or destroyed, during handling, in particular during removal and/or replacement of the intermediate element. In particular, an at least substantially undamaged elastic bending of the workpiece can be considered. An operation that can be carried out "substantially without tools", in particular the removal and/or replacement of an intermediate element, is to be understood in particular as an operation that can be carried out without the aid of tools, such as separating tools, for example saws, wedges, etc., and/or chemical separating agents, for example solvents, etc. Preferably, the intermediate element is fastenable to the carrier element and/or the grinding means by at least one fastening element of the fastening unit and/or the adhesive means. It is conceivable that the thermal transfer coating is arranged on the intermediate element, in particular on the underside of the intermediate element facing the grinding means. For example, the intermediate element can be fastened to the carrier element and/or the grinding means by a hook-and-loop connection of the fastening unit. In particular, the fastening means of the hook-and-loop connection are connected with the intermediate element. For example, the intermediate element is made of at least one plastic, in particular polyurethane, or of at least one metal. Particularly preferably, the intermediate element is made of a material different from the foam. In particular in a configuration in which the intermediate element consists of metal, the maximum thickness of the intermediate element is preferably less than 3mm, preferably less than 2mm and preferably less than 1.5 mm. It is additionally conceivable that the intermediate element comprises a recess or an indentation for an optimized heat distribution away from the grinding means, which is arranged in particular at least partially on the underside of the intermediate element facing the grinding means. The intermediate element and the carrier element are preferably constructed in a modular manner, wherein the operation of the grinding tool arrangement with and without the intermediate element can be taken into account. Preferably, the intermediate element is at least substantially plate-shaped. A "substantially plate-like" component, in particular an intermediate element, is to be understood to mean, in particular, a space element, which, viewed in a plane, has a non-circular cross section perpendicular to the plane in cross section and, in particular, has an at least substantially constant material thickness perpendicular to the plane, the material thickness being the surface extension of the space element parallel to the planeIn particular less than 50%, preferably less than 25% and particularly preferably less than 10% of the smallest surface extension of the element parallel to the plane. In particular, the intermediate element is designed as an intermediate mat or as an intermediate plate. Preferably, the intermediate element is provided for predefining a shape of the grinding means supported by the carrier element, in particular by the contact surface of the carrier element. In particular, the intermediate element has a bearing surface which is provided for arranging the intermediate element on the carrier element. In particular, the bearing surface of the intermediate element is arranged on the side of the intermediate element which faces the carrier element, in particular in the assembled state of the grinding tool device. Preferably, the bearing surface of the intermediate element has, in particular as viewed along the center axis of the carrier element, at least substantially the same shape as the contact surface of the carrier element. Preferably, the intermediate element comprises a contact surface which is provided for arranging the grinding means on the intermediate element. Preferably, the bearing surface of the intermediate element, in particular as viewed along the center axis of the carrier element, has at least substantially the same shape as the grinding means, in particular as a basic surface of the grinding means in a main plane of extension of the grinding means. It is conceivable that the contact surface and the bearing surface of the intermediate element are at least substantially identically or differently configured. It is preferably conceivable that the contact surface and the bearing surface of the intermediate element have mutually different geometric basic shapes. For example, the shape of the bearing surface of the intermediate element is designed as a round or circular shape, in particular as a circular surface shape, wherein the shape of the contact surface of the intermediate element has at least one corner, in particular for machining on a workpiece or a corner of the surroundings surrounding the workpiece. Alternatively or additionally, it is conceivable for the intermediate element to be provided for adapting the rigidity for supporting the grinding element, in particular without dismantling and/or replacing the carrier element. It is conceivable for the intermediate element to have a rigidity which differs from the rigidity of the carrier element and/or an elastic modulus which differs from the elastic modulus of the carrier element, for example for protecting a workpiece to be machined which has a particularly soft or particularly hard surface to be machined. In particular, the grinding tool arrangement has at least one pole, which is rotatable about the axis of movement and/or the central axis of the carrier element, for the maximum moment of inertia of the grinding tool arrangement, in particular at least of the carrier unit, the fastening unit and the grinding means, respectivelyThe value is obtained. Preferably, the ratio of the moment of inertia of the carrier element about the rotation about the axis of movement to the extreme value of the maximum moment of inertia for the grinding tool arrangement is at most 0.75, preferably at most 0.6 and preferably at most 0.5. In particular, the ratio of the moment of inertia of the carrier element to the extreme value of the maximum moment of inertia for the grinding tool arrangement is at least 0.1, preferably at least 0.2 and preferably at least 0.3. Preferably, a portion of the maximum moment of inertia of the grinding tool arrangement (which corresponds to the difference between the extreme value of the maximum moment of inertia for the grinding tool arrangement and the moment of inertia of the carrier element about rotation about the axis of movement) is available for the moment of inertia of the fastening unit, in particular the intermediate element and the grinding means about rotation about the axis of movement. Preferably, the ratio of the common moment of inertia of the fastening unit, in particular of the intermediate element and the grinding means, about the rotation about the axis of movement to the extreme value of the maximum moment of inertia for the grinding tool arrangement corresponds to a value in the value range 0.25 to 0.9, preferably 0.4 to 0.8 and preferably 0.5 to 0.7. Preferably, the quotient of the moment of inertia about rotation about the axis of motion of the carrier element and the weight of the carrier element is a value range of 250mm2To 1800mm2Preferably 250mm2To 2000mm2And preferably 250mm2To 2500mm2The value of (c). Preferably, the ratio of the moment of inertia of the carrier element about the axis of motion to the maximum area of the contact surface of the carrier element is a value in the range of values 0.001kg to 0.01kg, preferably 0.003kg to 0.008kg and preferably 0.004kg to 0.006 kg.
It is also proposed that the support element is designed as a support bar structure. Preferably, the support bar structure is constructed as a skeleton. Preferably, the supporting bar structure is formed by a plurality of identical basic cells or basic grids, which in particular are each formed by a plurality of supporting bars. "basic unit" is to be understood in particular to mean a three-dimensional matrix, wherein a uniform grid (giltter) or a uniform structure, in particular a strut-bar structure, can be formed in space by the arrangement of a plurality of matrices relative to one another in at least one direction. A "basic grid" is to be understood to mean, in particular, a two-dimensional matrix, in particular a two-dimensional arrangement, wherein a uniform grid or a uniform structure, in particular a strut structure, can be formed along a plane by the arrangement of a plurality of matrices relative to one another in at least one direction. Preferably, the load bearing element is constituted by more than one layer of elementary cells or elementary grids of the support bar structure. It is conceivable that the supporting bar structure is formed by a plurality of at least one or more basic cells or basic grids of the supporting bar structure. It is conceivable that the basic cells or the basic cells of the support bar structure have an n-angled, for example rectangular or honeycomb-shaped, basic shape, viewed in the main extension plane of the carrier element. For example, the support bar structure is configured as a grid of cubes, wherein the support bars are arranged along grid lines. It is also conceivable for the supporting bar arrangement to have a honeycomb-shaped structure at least along an axis of the carrier element, which is oriented in particular perpendicularly to the contact surface, wherein in particular the basic cells of the supporting bar arrangement each have the shape of an equilateral hexagon in at least one sectional plane. In particular in a configuration of the support element in which the support element is formed by more than one layer of basic grid of the support bar structure, it is conceivable for the layers of the basic grid to be arranged offset to one another, in particular along an axis of the support element oriented perpendicularly to the contact surface. Alternatively or additionally, it is conceivable that the layers of the basic grid extend parallel to the contact surface of the carrier element and are arranged, in particular along an axis of the carrier element oriented perpendicular to the contact surface, so as to be displaceable from layer to layer alternately along at least one axis oriented parallel to the contact surface. In particular, it is conceivable for the support rod structure to have a graphite structure. In this case, an advantageously high robustness and stability of the grinding tool arrangement can be achieved, in particular at the same time an advantageously low mass and an advantageously high thermal conductivity of the carrier element.
It is further proposed that the carrier unit comprises at least one support element, wherein the support element at least largely surrounds the carrier element, and wherein the support element has a heat conduction characteristic which is greater than a heat conduction characteristic of the carrier element. Preferably, the support element is provided for conducting away heat generated on the grinding means. In particular, the support element is provided, in particular in a configuration of the grinding tool arrangement, in which the carrier element is designed as a support bar structure for protecting the carrier element against impacts and/or plastic deformations, in particular of the respective support bar. In particular, in a configuration of the grinding tool arrangement in which the carrier element is designed as a support bar structure, the carrier element is preferably arranged at least largely as an endoskeleton in the support element. Preferably, the support element is composed in particular at least largely, preferably at least substantially completely, of a material having a melting temperature of more than 160 ℃, in particular more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the support element is composed in particular at least largely, preferably at least substantially completely, of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the support element is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃ and more than 160 ℃, in particular less than 300 ℃ and more than 180 ℃, preferably less than 280 ℃ and more than 200 ℃, particularly preferably less than 280 ℃ and more than 220 ℃ and very particularly preferably less than 280 ℃ and more than 240 ℃. In particular, the support element is at least largely composed of a foamed plastic or another plastic. Preferably, the carrier element has a greater rigidity than the support element. In this case, advantageously high robustness and stability of the grinding tool arrangement can be achieved.
Furthermore, a grinding device is proposed, which has at least one working surface with a plurality of grinding elements; and at least one interface or connection surface for arranging or connecting a fastening unit of the grinding tool device according to the invention, wherein the interface or connection surface has at least one, preferably the above-described fastening element, which is configured in particular as a hook-and-loop connection, which fastening element is configured in particular at least largely, preferably at least substantially completely, of a material having a melting temperature of more than 160 ℃, in particular more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the fastening element of the grinding means is at least largely, in particular at least substantially, completely composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the fastening element of the grinding means is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃ and more than 160 ℃, in particular less than 300 ℃ and more than 180 ℃, preferably less than 280 ℃ and more than 200 ℃, in particular preferably less than 280 ℃ and more than 220 ℃, and in particular preferably less than 280 ℃ and more than 240 ℃. Preferably, the grinding means is configured as a replaceable grinding means. In particular in a configuration of the grinding means in which the fastening elements of the grinding means are configured as part of a hook-and-loop connection, the fastening elements of the grinding means are preferably, in particular at least largely, composed of a fiber-reinforced thermoplastic. Preferably, the interface or the connection surface, in particular the fastening element of the grinding means, rests at least substantially over the entire surface on the working surface, in particular on the side of the working surface facing away from the grinding means. Preferably, the interface or connection surface, in particular the fastening element of the grinding means, extends at least for the most part over the entire side of the working surface. Preferably, the working surface and/or the interface or the connection surface has a basic shape, as seen in a main plane of extension of the grinding means, wherein at least one outer contour of the basic shape of the working surface and/or the interface or the connection surface corresponds to an outer contour of the basic shape of the carrier element. Alternatively or additionally, it is conceivable for the interfaces or connection surfaces, in particular the fastening elements, to be arranged uniformly distributed over the entire side of the working surface. In this case, advantageously high robustness and stability can be achieved, in particular with respect to temperature-induced loads acting on the fastening element of the grinding means. In this case, advantageously high service lives of the grinding device can be achieved. In this case, an advantageously reliable connection of the grinding means to the grinding tool device can be achieved.
Furthermore, it is proposed that the grinding means have at least one heat transfer coating which is arranged between the working surface and the fastening element. In particular, the heat transfer coating is at least substantially similar in construction to the above-described heat transfer coating of the grinding tool arrangement. Preferably, the heat transfer coating of the grinding device is provided for dissipating heat generated on the working surface during the grinding process. Preferably, the heat-conducting coating of the grinding means bears at least substantially over the entire surface against the working surface and/or the fastening element of the grinding means. Preferably, the heat-conducting coating of the grinding means has a higher heat-conducting characteristic than the working surface and/or the fastening element of the grinding means. In this case, an advantageously high robustness and stability of the grinding means can be achieved, in particular because the heat generated at the grinding means can be dissipated advantageously rapidly via the heat transfer coating. Advantageously high heat conduction, heat convection and/or heat diffusion in grinding applications can be achieved in this case.
Furthermore, a grinding tool system is proposed, which has at least one grinding tool device according to the invention and at least one grinding means according to the invention. The grinding means is preferably connected to the grinding tool device in at least one assembled state of the grinding tool system, in particular in a replaceable manner. In this case, an advantageously high robustness and stability of the grinding tool system can be achieved, in particular with respect to temperature-induced loads during the grinding process. In this case, advantageously high machining accuracy can be achieved, in particular because an advantageously high resistance of the carrier element, for example with respect to temperature-induced deformations and/or damage, can be achieved. This ensures an advantageously continuous uniformly formed machining surface. In this case, wear phenomena, such as partial melting of the support element, which can occur in particular under increased contact pressure and/or over a longer service life due to high heat generation, can advantageously be prevented. This ensures an advantageously reliable connection of the grinding means to the carrier element.
The grinding tool arrangement according to the invention, the grinding device according to the invention and/or the grinding tool system according to the invention should not be limited to the above-described applications and embodiments. In particular, the grinding tool arrangement according to the invention, the grinding device according to the invention and/or the grinding tool system according to the invention can have a different number of individual elements, components and units than the number described here in order to satisfy the functionality described here. Furthermore, values within the boundaries should also be considered disclosed and may be used arbitrarily in the context of the value ranges set forth in this disclosure.
Drawings
Further advantages result from the following description of the figures. Four embodiments of the invention are shown in the drawings. The figures, description and claims contain a number of combined features. The person skilled in the art advantageously also considers the individual features individually and summarizes them as meaningful further combinations.
The figures show:
fig. 1 is a schematic perspective view of a grinding tool system according to the invention with a grinding tool arrangement according to the invention and a grinding means according to the invention;
fig. 2 is a schematic exploded view of a grinding tool arrangement according to the invention;
fig. 3 is a schematic illustration of a cross section of a grinding tool system according to the invention with a grinding tool arrangement according to the invention and a grinding means according to the invention;
fig. 4 is a schematic perspective view of a supporting element and a supporting element of an alternative embodiment of a supporting unit of the grinding tool device according to the invention, which supporting element is designed as a supporting bar structure;
fig. 5 is a schematic plan view of a supporting element, which is designed as a supporting bar structure, of a further alternative embodiment of a supporting unit of the grinding tool device according to the invention;
fig. 6 is a schematic top view of an alternative embodiment of the grinding tool system according to the invention with a further alternative embodiment of the grinding tool arrangement according to the invention and an alternative embodiment of the grinding means according to the invention;
fig. 7 is a schematic sectional illustration of a protective unit and a supporting element of a further alternative embodiment of the grinding tool device according to the invention through a central axis of the supporting element of the grinding tool device;
fig. 8 is a perspective view of a protective unit and a carrier element of a further alternative embodiment of the grinding tool device according to the invention; and
fig. 9 shows a schematic section in cross section of a further embodiment of an inventive grinding tool system with an inventive grinding tool arrangement with an intermediate element and an inventive grinding means.
Detailed Description
Fig. 1 shows a grinding tool system 10a in the assembled state. The grinding tool system 10a has a grinding tool arrangement 12a, which is designed as a grinding plate and comprises a connecting region 14 a. The connecting region 14a is provided for connecting the grinding tool system 10a to a grinding machine tool. The grinding tool device 12a comprises a carrier unit 16a designed as a support plate and a fastening unit 18a for releasably fastening a grinding means 20a, designed as a grinding paper, of the grinding tool system 10a to the carrier unit 16a, wherein the carrier unit 16a comprises at least one carrier element 22a on which the grinding means 20a is arranged by means of the fastening unit 18 a. The grinding means 20a is fastened in the assembled state by the fastening unit 18a to the carrier unit 16a, in particular to the carrier element 22 a. The carrier unit 16a comprises exactly one carrier element 22a, the carrier element 22a being composed of a material having a melting temperature of more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the carrier element 22a is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the material of which the carrier element 22a is composed has a melting temperature of less than 350 ℃ and more than 180 ℃, in particular less than 300 ℃ and more than 200 ℃, preferably less than 280 ℃ and more than 220 ℃, particularly preferably less than 280 ℃ and more than 240 ℃ and very particularly preferably less than 280 ℃ and more than 250 ℃. In particular, the carrier element 22a consists of metal. The carrier element 22a is of plate-like design. The connecting region 14a delimits a plurality of form-locking slots 24a, by means of which the grinding tool system 10a, in particular at least the carrier unit 16a and the connecting region 14a, can be fastened to a grinding machine tool, in particular a tool receiver of the grinding machine tool. The connection region 14a is made of a material, in particular a metal, which has a melting temperature of more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the connecting region 14a is at least largely, in particular at least substantially, completely composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the connecting region 14a is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃ and more than 180 ℃, in particular less than 300 ℃ and more than 200 ℃, preferably less than 280 ℃ and more than 220 ℃, particularly preferably less than 280 ℃ and more than 240 ℃ and very particularly preferably less than 280 ℃ and more than 250 ℃. The connecting region 14a is connected at least to the carrier element 22a in a rotationally fixed manner. The grinding tool system 10a, in particular the grinding tool arrangement 12a, comprises a movement axis 26a, about which at least the carrier unit 16a, in particular the carrier element 22a, the fastening unit 18a and the grinding means 20a are at least partially movable and drivable by means of a drive unit of the grinding machine tool. The support element 22a is arranged perpendicular to the movement axis 26a, wherein in particular a main plane of extension of the support element 22a is arranged perpendicular to the movement axis 26 a. However, other configurations of the grinding tool system 10a, in particular of the grinding tool arrangement 12a and/or the grinding means 20a, are also conceivable.
The grinding tool device 12a has a protective unit 80a, which is arranged on the carrier element 22a and is provided for protecting the workpiece, in particular the external unit, from damage, and/or for damping the impact of the carrier element 22a on the workpiece or on the external unit, in particular directly, in particular during the grinding process, wherein the workpiece and the external unit are not shown in fig. 1. The protective unit 80a comprises a protective element 84a, which is arranged on an outer side 88a of the carrier element 22 a. Protective element 84a is arranged on outer edge 82a of the carrier element and on two outer surfaces 90a, 92a of carrier element 22a facing away from grinding means 20a and contact surface 34 a. The protective element 84a is arranged at a distance from the contact surface 34a and the grinding means 20 a. Preferably, one of the two outer surfaces 90a, 92a is oriented transversely, in particular perpendicularly, to the contact surface 34a and at least partially delimits the contact surface 34 a. Preferably, the other 92a of the two outer surfaces 90a, 92a is oriented parallel to the contact surface 34 a. The outer surface 90a extends at least substantially completely about the axis of motion 26 a. In particular, outer edge 82a is arranged in a main plane of extension of carrier element 22a and extends at least substantially completely around movement axis 26 a. Preferably, the outer edge 82a and the outer surface 92a oriented parallel to the contact surface 34a are arranged spaced apart from the contact surface 34 a. Protective element 84a is arranged along outer edge 82a of carrier element 22a at least substantially completely around movement axis 26 a. The protective element 84a at least partially surrounds the support element 22a, in particular, in the region of the outer edge 82a, viewed perpendicularly to the main plane of extension of the support element 22 a. In particular, protective element 84a surrounds outer edge 82a of carrier element 22 a. The protective element 84a is arranged on the carrier element 22a at least largely, in particular completely, on one side of the plane of the carrier unit 16a extending along the contact surface 34a, viewed perpendicular to the main plane of extension of the carrier element 22 a. The protective element 84a extends at least for the most part, in particular at least substantially completely, over the maximum thickness 50a of the carrier element 22a at the outer edge 82 a. The protective element 84a has a maximum thickness 86a, in particular of at least 0.3mm, preferably at least 0.5mm, preferably at least 0.8mm and particularly preferably at least 1mm, in particular, as viewed perpendicular to the main plane of extension of the carrier element 22 a. Protective element 84a rests along outer edge 82a of carrier element 22a against an outer surface 90a and a further outer surface 92a of carrier element 22 a. The protective element 84a is integrally connected to the carrier element 22a, in particular by means of an adhesive connection. However, it is also conceivable for the protective element 84a to be fastened to the carrier element 22a by means of a form-locking and/or force-locking connection, wherein in particular the carrier element 22a has at least one or more form-locking and/or force-locking projections in the region of the outer edge 82a, the outer surface 90a and/or the further outer surface 92a, which are provided for fastening the protective element 84 a. The protective unit 80a, in particular the protective element 84a, is made of a material having a melting temperature of more than 160 ℃, in particular more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃ and very particularly preferably more than 240 ℃. The protective unit 80a, in particular the protective element 84a, is at least largely, in particular at least substantially completely, made of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. The protective unit 80a, in particular the protective element 84a, is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃ and more than 160 ℃, in particular less than 300 ℃ and more than 180 ℃, preferably less than 280 ℃ and more than 200 ℃, particularly preferably less than 280 ℃ and more than 220 ℃ and very particularly preferably less than 280 ℃ and more than 240 ℃. The protective unit 80a, in particular the protective element 84a, is made of plastic, in particular thermoplastic. However, it is also conceivable for the protective unit 80a, in particular the protective element 84a, to be composed of polyamide and/or rubber. Preferably, the protective element 84a is made of a material that has a lower rigidity than the carrier element 22a, in particular the material of which the carrier element 22a is made. The protective unit 80a, in particular the protective element 84a, is designed to be replaceable, wherein in particular the protective unit 80a, in particular the protective element 84a, can be detached from the carrier element 22a without residues and/or without damage. However, other configurations of the protective unit 80a are also conceivable, for example with more than one protective element 84a, which is arranged along the outer edge 82a, the outer surface 90a and/or the further outer surface 92 a. In particular in a configuration in which the protective unit 80a has more than one protective element 84a, it is conceivable for the protective element 84a to cover the outer edge 82a, the outer surface 90a and/or the further outer surface 92a of the carrier element 22a only partially, for example in the corner region of the basic shape of the carrier element 22 a. Alternatively, it is conceivable for the protective element 84a to be arranged on the carrier element 22a, in particular only via the further outer surface 92a, wherein in particular the protective element 84a, viewed perpendicularly to the main plane of extension of the carrier element 22a, extends from the movement axis 26a beyond the outer edge 82a of the carrier element 22 a. Alternatively, it is conceivable for the protective element 84a to be arranged on the carrier element 22a, in particular only on the outer surface 90a of the carrier element 22 a. The protective element 84a has, in particular, an outer edge or surface, viewed perpendicular to the main plane of extension of the support element 22a, which has a greater minimum distance from the axis of movement than the outer edge 82a and/or the outer surface 90a of the support element 22 a.
Fig. 2 shows an exploded view of the grinding tool arrangement 12 a. The fastening unit 18a comprises a fastening element 28a for fastening the grinding means 20a on the carrier unit 16a, in particular on the carrier element 22a, which fastening element 28a is composed of a material having a melting temperature of more than 160 ℃, in particular more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, completely particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the fastening element 28a is at least largely, in particular at least substantially, completely composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the fastening element 28a is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃ and more than 160 ℃, in particular less than 300 ℃ and more than 180 ℃, preferably less than 280 ℃ and more than 200 ℃, particularly preferably less than 280 ℃ and more than 220 ℃ and very particularly preferably less than 280 ℃ and more than 240 ℃. The fastening element 28a of the fastening unit 18a is composed of a different material than the carrier element 22 a. The movement axis 26a extends centrally through the carrier element 22a and the fastening element 28a of the fastening unit 18 a. The fastening elements 28a of the fastening unit 18a are configured as part of a hook and loop connection. The fastening element 28a of the fastening unit 18a has a basic shape, as viewed in a main plane of extension of the fastening element 28a of the fastening unit 18a, wherein at least one outer contour of the basic shape of the fastening element 28a of the fastening unit 18a corresponds to an outer contour of the basic shape of the carrier element 22 a. The fastening element 28a of the fastening unit 18a is configured corresponding to the fastening element 78a of the grinding means 20 a. The fastening elements 28a of the fastening unit 18a consist at least for the most part of a fiber-reinforced thermoplastic.
The fastening unit 18a has an adhesive element 30a designed as an adhesive means, which is provided for the exchangeable fastening of the fastening element 28a of the fastening unit 18a designed as a hook-and-loop connection to the carrier element 22 a. The adhesive element 30a is provided for the cohesive connection of the fastening element 28a of the fastening unit 18a to the carrier element 22 a. The adhesive element 30a is shown in fig. 2 in a state arranged on the fastening element 28a of the fastening unit 18 a. The adhesive element 30a extends at least for the most part through a surface 32a of the fastening element 28a of the fastening unit 18a facing the carrier element 22 a. In particular, the adhesive elements 30a are arranged evenly distributed on the surface of the fastening element 28a of the fastening unit 18a facing the carrier element 22 a. The adhesive element 30a is made of a material having a melting temperature of more than 160 ℃, in particular more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the adhesive element 30a is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the adhesive element 30a is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃ and more than 160 ℃, in particular less than 300 ℃ and more than 180 ℃, preferably less than 280 ℃ and more than 200 ℃, particularly preferably less than 280 ℃ and more than 220 ℃ and very particularly preferably less than 280 ℃ and more than 240 ℃. The support element 22a has a contact surface 34a, which is designed as a planar surface. The fastening unit 18a is arranged on the carrier element 22a via the contact surface 34 a. The fastening element 28a of the fastening unit 18a and the adhesive element 30a are arranged on the carrier element 22a on the contact surface 34a of the carrier element 22 a. Other configurations of the fastening unit 18a, in particular of the adhesive element 30a, are also conceivable, in particular the adhesive element 30a being designed such that the fastening element 28a is connected to the carrier element 22a by the adhesive element 30a in a non-releasable manner. The contact surface 34a is arranged on the side of the support unit 16a, in particular of the support element 22a, facing away from the connection region 14 a. The carrier element 22a has a triangular basic shape, as viewed in a main plane of extension of the carrier element 22a, wherein in particular the corners of the basic shape are rounded.
The carrier element 22a delimits six slots 36a, which are provided for conducting heat away from the grinding means 20a and/or the carrier element 22a to the surroundings surrounding the carrier unit 16 a. The carrier element 22a is designed in such a way that the slot 36a extends from the side on which the contact surface 34a is arranged, preferably over the maximum thickness of the carrier element 22a, to the side of the carrier element 22a facing the connection region 14 a. The support element 22a is designed in such a way that the notches 36a are arranged uniformly distributed about the axis of movement 26a, in particular the connecting region 14a, on the contact surface 34a of the support element 22 a. The faces 38a of the carrier element 22a which delimit the notches 36a have the same basic shape, viewed in the main plane of extension of the carrier element 22 a. Preferably, the face bounding the notch 36a is arranged perpendicular to the contact face 34 a. The recess 36a delimited by the carrier element 22a is provided to increase, preferably compared to a configuration in which the carrier element 22a is embodied as a non-recessed carrier element 22a, at least one diffusion of heat generated during grinding, in particular in the machining region 40a of the grinding means 20a, from the contact surface 34a to the carrier unit 16a, in particular the side of the carrier element 22a facing away from the fastening unit 18 a. The outer side 33a of the connecting region 14a delimits six notches 35a, which, when the connecting region 14a is fastened to the carrier unit 16a, are arranged in a manner overlapping the notches 36a of the carrier element 22a, in particular, when viewed perpendicular to the main plane of extension of the carrier element 22 a. Preferably, the outer side 33a of the connection region 14a is arranged at least partially parallel, in particular flush, with the surface 32a of the carrier element 22a delimiting the recess 36a delimited by the carrier element 22a in the region of the recesses 35a, 36a delimited by the carrier element 22a and the connection region 14 a. In particular, the carrier element 22a delimits at least one further slot 37a extending about the movement axis 26 a. The further slot 37a is arranged, as viewed in the main plane of extension of the carrier element 22a, in a region of the carrier element 22a in which the connection region 14a is arranged on the carrier element 22 a. However, other configurations of the support unit 16a, in particular of the support element 22a, are also conceivable.
The grinding tool device 12a has a heat transfer coating 42a, which is arranged between the carrier unit 16a, in particular the carrier element 22a, and the fastening unit 18a, preferably on the contact surface 34 a. It is also conceivable for the heat transfer coating 42a to be arranged on the fastening unit 18a on the side of the fastening unit 18a, in particular of the fastening element 28a of the fastening unit 18a, facing away from the carrier unit 16a, in particular of the carrier element 22 a. The heat transfer coating 42a bears at least substantially over the entire surface against the fastening element 28a of the fastening unit 18 a. The thermal transfer coating 42a has a greater thermal conductivity characteristic than the carrier unit 16a, in particular the carrier element 22a, and/or the fastening unit 18a, in particular the fastening element 28a of the fastening unit 18 a. The heat transfer coating 42a is made of copper. However, other configurations of the heat transfer coating 42a are also conceivable, wherein the heat transfer coating 42a is composed of, for example, precious metals and/or alkaline earth metals, carbon compounds, in particular graphene, diamond and/or graphite close to graphene, etc. The heat transfer coating 42a is in particular vapor-sprayed onto the fastening elements 28a of the fastening unit 18 a.
The fastening element 28a of the fastening unit 18a rests at least substantially over the entire surface on the carrier element 22a, in particular on the contact surface 34a, by means of the adhesive element 30 a. The fastening unit 18a, in particular the fastening element 28a of the fastening unit 18a, delimits six recesses 44a, which are provided for conducting heat away from the grinding means 20a and/or the carrier unit 16a to the surroundings of the fastening unit 18a, in particular the fastening element 28a of the fastening unit 18 a. The fastening unit 18a, in particular the fastening element 28a of the fastening unit 18a, is designed in such a way that the recess 44a extends from the side of the fastening unit 18a, on which the fastening element 28a is arranged on the contact surface 34a, over the maximum thickness of the fastening unit 18a, in particular the fastening element 28a of the fastening unit 18a, to the side of the fastening unit 18a, in particular the fastening element 28a of the fastening unit 18a, facing the grinding means 20 a. The fastening element 28a is configured in such a way that the recesses 44a are arranged, as viewed in a main plane of extension of the fastening element 28a of the fastening unit 18a, uniformly about the movement axis 26 a. In particular, the fastening element 28a of the fastening unit 18a delimits a slot 48a about the movement axis 26a, which is arranged in correspondence with a further slot 37a of the carrier element 22a about the movement axis 26 a. However, other configurations of the fastening unit 18a, in particular of the fastening element 28a of the fastening unit 18a, are also conceivable, for example, configured as an adhesive connection which can be released in particular, as a hook, clip, as a negative pressure element (unterrockelement), etc.
Fig. 3 shows the grinding tool system 10a in a sectional plane oriented parallel to the movement axis 26 a. The layer thicknesses of the individual elements shown in particular in fig. 3 are shown schematically for a better overview and are not to scale. Preferably, fig. 3 shows a sectional plane spaced apart from the outer edge 82a and/or the outer side 88a, wherein in particular the protective unit 80a is not shown in fig. 3. The carrier unit 16a, in particular the carrier element 22a, has a maximum thickness 50a perpendicular to the contact surface 34a of the carrier unit 16a with the fastening unit 18a of at least substantially 2 mm. However, it is also conceivable for the carrier unit 16a, in particular the carrier element 22a, to have a maximum thickness 50a of less than 2mm, particularly preferably at least substantially 1mm, 0.8mm or 0.6 mm. The carrier element 22a has a flatness of at most 2% of the maximum thickness at the contact surface 34 a. The support element 22a is designed in such a way that the maximum thickness 50a extends from the contact surface 34a to a bearing surface of the support element 22a, on which the connection region 14a rests on the support element 22a, wherein, in particular, the connection region 14a is not shown in fig. 3. The fastening unit 18a, in particular the fastening element 28a of the fastening unit 18a, has a maximum thickness 46a of 2mm perpendicular to the side of the fastening element 28a of the fastening unit 18a facing the contact surface 34a of the carrier element 22 a. The adhesive element 30a has a maximum thickness 52a of 1mm perpendicular to the side of the adhesive element 30a facing the contact surface 34a of the carrier element 22 a.
The grinding device 20a includes a working surface 54a having a plurality of grinding elements; and a connection surface 53a for connection with the fastening unit 18a of the grinding tool device 12 a. The attachment surface 53a comprises a portion of a fastening element 78a configured as a hook-and-loop connection, which is composed of a material having a melting temperature of more than 160 ℃, in particular more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the fastening element 78a of the grinding means 20a is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the fastening element 78a of the grinding means 20a is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃ and more than 160 ℃, in particular less than 300 ℃ and more than 180 ℃, preferably less than 280 ℃ and more than 200 ℃, particularly preferably less than 280 ℃ and more than 220 ℃ and very particularly preferably less than 280 ℃ and more than 240 ℃. The fastening element 78a of the grinding means 20a is configured corresponding to the fastening element 28a of the fastening unit 18 a. The fastening element 78a of the grinding means 20a consists of a fiber-reinforced thermoplastic. The connecting surface 53a, in particular the fastening element 78a of the grinding means 20a, rests at least substantially over the entire surface on the working surface 54a on the side of the working surface 54a facing away from the grinding element. The connection surface 53a, in particular the fastening element 78a of the grinding means 20a, extends over the entire side of the working surface 54 a. The working surface 54a and the connecting surface 53a each have a basic shape, as viewed in a main plane of extension of the grinding means 20a, wherein at least one outer contour of the basic shape of the working surface 54a and the connecting surface 53a corresponds to an outer contour of the basic shape of the support element 22 a. The working surface 54a has a maximum thickness 56a parallel to the axis of movement 26a of 2 mm. The connection surface 53a, in particular the fastening element 78a of the grinding means 20a, has a maximum thickness 58a of 2mm parallel to the axis of movement 26 a. The abrading device 20a includes a thermal transfer coating 60a disposed between the working surface 54a and the fastening elements 78a of the abrading device 20 a. Preferably, the heat transfer coating 60a of the grinding device 20a is provided for dissipating heat generated during the grinding process on the working surface 54 a. The heat-conducting coating 60a of the grinding tool arrangement 12a and the heat-conducting coating 42a of the grinding means 20a each form a planar, thin layer and have a maximum thickness 62a of 0.3mm parallel to the axis of movement 26 a. The heat transfer coating 60a of the grinding means 20a bears at least substantially over the entire surface against the working surface 54a and against the fastening element 78a of the grinding means 20 a. The heat transfer coating 60a of the grinding means 20a has, in particular, a higher thermal conductivity characteristic than the working surface 54a and the fastening element 78a of the grinding means 20 a. However, other configurations of the grinding means 20a, in particular of the fastening element 78a of the grinding means 20a, are also conceivable.
Five further embodiments of the invention are shown in fig. 4 to 9. The following description and the figures are substantially limited to the differences between the exemplary embodiments, wherein reference can in principle also be made to the figures and/or descriptions of the other exemplary embodiments, in particular in fig. 1 to 3, with regard to identically numbered components, in particular with regard to components having the same reference numerals. To distinguish between the embodiments, the letter a is placed after the reference numerals of the embodiments in fig. 1 to 3. In each of the embodiments of fig. 4 to 9, the letter a is replaced by letters b to f.
Fig. 4 shows a carrier element 22b of a carrier unit 16b of an alternative embodiment of the grinding tool device 12 b. The grinding tool device 12b has a carrier unit 16b and a fastening unit 18b for releasably fastening a grinding means 20b of the grinding tool system 10b to the carrier unit 16b, wherein the carrier unit 16b comprises a carrier element 22b on which the grinding means 20b is arranged by means of the fastening unit 18 b. The carrier element 22b is composed of a material having a melting temperature of more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the carrier element 22b is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the carrier element 22b is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃ and more than 180 ℃, in particular less than 300 ℃ and more than 200 ℃, preferably less than 280 ℃ and more than 220 ℃, particularly preferably less than 280 ℃ and more than 240 ℃ and very particularly preferably less than 280 ℃ and more than 250 ℃. The grinding tool arrangement 12b shown in fig. 4 has an at least substantially similar configuration to the grinding tool arrangement 12b described in the description of fig. 1 to 3, so that the description of fig. 1 to 3 can be referred to at least substantially with respect to the configuration of the grinding tool arrangement 12b shown in fig. 4. In contrast to the grinding tool arrangement 12a described in the description of fig. 1 to 3, the carrier element 22b of the grinding tool arrangement 12b shown in fig. 4 is designed as a supporting bar arrangement 64 b. The support rod structure 64b is constructed in a skeleton shape. The support bar arrangement 64b is formed from a plurality of identical basic units 66b, which in particular each consist of 12 support bars 68 b. The base unit 66b of the support bar structure 64b is configured as a cube. The base unit 66b of the support bar arrangement 64b has a rectangular basic shape, viewed in the main extension plane of the carrier unit 16 b. The support bar structure 64b is configured as a grid of cubes in which the support bars 68b are arranged along grid lines. The support element 22b is composed of a layer 72b of basic units 66b of the support rod arrangement 64b, which extends parallel to the main plane of extension of the support element 22b and perpendicular to the axis of movement 26b of the grinding tool device 12 b. The carrier unit 16b comprises a support element 69b, wherein the support element 69b at least largely surrounds the carrier element 22b, and wherein the support element 69b has a heat conduction characteristic which is greater than a heat conduction characteristic of the carrier element 22 b. The support element 69b is provided for conducting away heat generated on the grinding means 20 b. In particular, the supporting elements 69b are provided for protecting the carrier element 22b against impacts and/or plastic deformations, in particular of the respective supporting bar 68 b. The support element 69b is configured as an endoskeleton and is arranged at least for the most part within the support element 22 b. The support element 69b is composed of a material having a melting temperature of more than 160 ℃, in particular more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the supporting element 69b is at least largely, preferably at least substantially completely, composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the supporting element 69b is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃ and more than 160 ℃, in particular less than 300 ℃ and more than 180 ℃, preferably less than 280 ℃ and more than 200 ℃, in particular preferably less than 280 ℃ and more than 220 ℃ and in particular preferably less than 280 ℃ and more than 240 ℃. The support element 69b is at least largely made of a foamed plastic. The bearing member 22b has a greater rigidity than the support member 69 b. However, other configurations of the support rod structure 64b and/or the support element 69b are also contemplated.
Fig. 5 shows a plan view of a carrier element 22c of a carrier unit 16c of a further alternative embodiment of a grinding tool device 12 c. The grinding tool arrangement 12c has a carrier unit 16c and a fastening unit 18c for releasably fastening a grinding means 20c of the grinding tool system 10c to the carrier unit 16c, wherein the carrier unit 16c comprises a carrier element 22c on which the grinding means 20c is arranged by means of the fastening unit 18 c. The carrier element 22c is composed of a material having a melting temperature of more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the carrier element 22c is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the carrier element 22b is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃ and more than 180 ℃, in particular less than 300 ℃ and more than 200 ℃, preferably less than 280 ℃ and more than 220 ℃, particularly preferably less than 280 ℃ and more than 240 ℃ and very particularly preferably less than 280 ℃ and more than 250 ℃. The grinding tool arrangement 12c shown in fig. 5 has an at least substantially similar configuration to the grinding tool arrangement 12b described in the description of fig. 4, so that the description of fig. 4 can be referred to at least substantially with respect to the configuration of the grinding tool arrangement 12c shown in fig. 5. In contrast to the grinding tool arrangement 12b described in the description of fig. 4, the carrier element 22c of the grinding tool arrangement 12c shown in fig. 5 is designed as a supporting bar structure 64c, wherein the supporting bar structure 64c is formed from a plurality of elementary webs 70 c. The basic lattice 70c of the strut bar arrangement 64c is designed in the form of a honeycomb and is formed from six strut bars 68 c. The supporting bar arrangement 64c has a honeycomb-shaped structure, as viewed along the axis of the carrier element 22c oriented perpendicularly to the contact surface 34c of the carrier element 22c and/or the movement axis 26c of the grinding tool device 12c, wherein in particular the basic grid 70c of the supporting bar arrangement 64c has the shape of an equilateral hexagon in at least one section plane oriented parallel to the contact surface 34 c. The support element 22c consists of a basic grid 70c which supports the bar structure 64c above a layer 72c, of which only the layer 72c is shown in fig. 5. The layers 72c of the basic grid 70c are connected by the supporting rods 68c and are arranged at least partially displaceably relative to one another along an axis of the carrier element 22c oriented perpendicularly to the contact surface 34 c. The layers of the mesh 70c extend perpendicular to the axis of motion 26c and/or parallel to the contact face 34 c. The layers of the grid 70c are arranged so as to be displaceable from layer to layer along an axis of the carrier element 22c oriented perpendicularly to the contact surface 34c, in particular the movement axis 26c, alternately along at least one axis oriented parallel to the contact surface 34 c. In particular, the support rod structure 64c is constructed as a graphite structure.
Fig. 6 shows a top view of an alternative embodiment of the grinding tool system 10 d. The grinding tool system 10d shown in fig. 6 has an at least substantially similar configuration to the grinding tool system 10a described in the description of fig. 1 to 3, so that the description with reference to fig. 1 to 3 is at least substantially applicable with respect to the configuration of the grinding tool system 10d shown in fig. 6. In contrast to the grinding tool system 10a described in the description of fig. 1 to 3, the grinding tool system 10d shown in fig. 6 has a grinding means 20d which is arranged only on one side of the movement axis 26d of the grinding tool arrangement 12 d. The grinding tool system 10d is provided for use with a grinding machine tool configured as a vibrationally drivable multi-function machine tool. The grinding tool device 12d has a carrier unit 16d and a fastening unit 18d for releasably fastening the grinding means 20d to the carrier unit 16d, wherein the carrier unit 16d comprises a carrier element 22d on which the grinding means 20d is arranged by means of the fastening unit 18 d. The carrier element 22d is composed of a material having a melting temperature of more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the carrier element 22d is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the carrier element 22d is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃ and more than 180 ℃, in particular less than 300 ℃ and more than 200 ℃, preferably less than 280 ℃ and more than 220 ℃, particularly preferably less than 280 ℃ and more than 240 ℃ and very particularly preferably less than 280 ℃ and more than 250 ℃. It is conceivable that the grinding tool arrangement 12d, like the grinding tool arrangement 12a described in fig. 1 to 3, comprises a protective unit 80a, which is not shown in fig. 6. The grinding tool device 12d comprises a connecting region 14d arranged about the axis of movement 26 d. The carrier element 22d is arranged about the movement axis 26d and has, in the direction away from the movement axis 26d, a carrier region 74d, on which the grinding means 20d can be fastened to the carrier element 22d by means of the fastening unit 18 d. The support region 74d has at least in sections a triangular basic shape, wherein in particular the corners of the basic shape are rounded. However, a configuration of the support element 22d is also conceivable, in which the basic shape is, for example, a star, a square and/or a circle. The fastening unit 18d has a fastening element 28d, which is designed as a releasable adhesive connection and is arranged on the carrier element 22d in the carrier region 74d, for fastening the grinding means 20d to the carrier unit 16 d. The fastening element 28d of the fastening unit 18d consists of a material having a melting temperature of more than 160 ℃, in particular more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the fastening element 28d is at least largely, in particular at least substantially, completely composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. Preferably, the fastening element 28d is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of less than 350 ℃ and more than 160 ℃, in particular less than 300 ℃ and more than 180 ℃, preferably less than 280 ℃ and more than 200 ℃, particularly preferably less than 280 ℃ and more than 220 ℃ and very particularly preferably less than 280 ℃ and more than 240 ℃. The carrier element 22d has a maximum thickness 50d of 2mm perpendicular to the contact surface 34d of the carrier unit 16d with the fastening unit 18 d. The contact surface 34d extends over the entire surface of the carrier element 22d facing the connection region 14d in the carrier region 74 d. In particular, the contact surface 34d is arranged on the carrier element 22d perpendicularly to the movement axis 26 d. The grinding tool device 12d comprises a heat transfer coating 42d, which is arranged on the fastening element 28d of the fastening unit 18d on the side of the fastening unit 18d facing away from the carrier unit 16d, in particular the carrier element 22 d. The fastening unit 18d has an adhesive element 30d designed as an adhesive means, which is provided for fastening the fastening element 28d of the fastening unit 18d to the carrier element 22d, in particular in a non-releasable manner. However, it is also conceivable for the adhesive element 30d to be designed such that the fastening element 28d is fastened to the carrier element 22d by means of the adhesive element 30d in an exchangeable manner. The fastening element 28d of the fastening unit 18d rests with the adhesive element 30d on the entire surface on the carrier element 22d, in particular in the carrier region 74 d. The abrading device 20d includes a working surface 54d having a plurality of abrading elements; and an interface 76d for arranging the grinding means 20d on the fastening unit 18d of the grinding tool arrangement 12 d. The interface 76d has a fastening element 78d which is composed of a material having a melting temperature of more than 160 ℃, in particular more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. Preferably, the fastening element 78d of the grinding means 76d is at least largely, in particular at least substantially, completely composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, in particular preferably less than 280 ℃ and in particular less than 260 ℃. Preferably, the fastening element 78d of the grinding means 76d is at least largely, in particular at least substantially, completely composed of a material having a melting temperature of less than 350 ℃ and more than 160 ℃, in particular less than 300 ℃ and more than 180 ℃, preferably less than 280 ℃ and more than 200 ℃, particularly preferably less than 280 ℃ and more than 220 ℃, and very particularly preferably less than 280 ℃ and more than 240 ℃. The fastening element 78d of the grinding means 20d forms an adhesive surface and is provided for co-action with the fastening element 28d of the fastening unit 18 d.
Fig. 7 and 8 show a further alternative embodiment of a grinding tool arrangement 12 e. In particular, the grinding tool arrangement 12e is configured as part of the grinding tool system 10 e. Fig. 7 shows a sectional view of the carrier element 22e of the carrier unit 16e of the grinding tool device 12e and the protective element 84a of the protective unit 80e of the grinding tool device 12e, wherein in particular the sectional plane includes a common central axis 96e of the carrier element 22e and the protective element 84 a. The support element 22e and the protective element 84a are shown in fig. 7 in a state in which they are arranged against one another. The grinding tool device 12e comprises a carrier unit 16e and a fastening unit 18e (not shown in fig. 7), the fastening unit 18e being used to releasably fasten a grinding means, in particular grinding sandpaper or grinding fleece, to the carrier unit 16 e. The carrier unit 16e comprises a carrier element 22e on which the grinding means can be arranged by means of the fastening unit 18 e. The carrier element 22e is composed of a material having a melting temperature of more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. The grinding tool arrangement 12e comprises a protective unit 80e, which is arranged on the carrier element 22e and is provided for protecting the workpiece, the carrier element 22e or an external unit, in particular from damage, in particular during the grinding process, and/or for damping, in particular direct, impacts of the carrier element 22e on the workpiece or the external unit. The grinding tool arrangement 12e shown in fig. 7 and 8 has an at least substantially similar configuration to the grinding tool arrangement 12a described in the description of fig. 1 to 3, so that the description of fig. 1 to 3 can be referred to at least substantially with respect to the configuration of the grinding tool arrangement 12e shown in fig. 7 and 8. Unlike the grinding tool arrangement 12a described in the description of fig. 1 to 3, the protective element 84e of the protective unit 80e of the grinding tool arrangement 12e shown in fig. 7 and 8 has a melting temperature of more than 220 ℃, preferably more than 240 ℃ and preferably more than 260 ℃. In particular, the protection unit 80e is constituted by a protection element 84 e. However, it is also conceivable for the protective unit 80e to comprise more than one protective element 84e, which are each arranged on the carrier element 22 e. The protective element 84e, viewed along the center axis 96e of the carrier element 22e and/or the protective element 84e, has an outer edge 98e which, compared to the outer edge 102e of the carrier element 22e, has a greater minimum distance 100e from the axis of movement 26e and/or the center axis 96e of the carrier element 22e and/or the protective element 84 e. The central axis 96e of the carrier element 22e and/or the protective element 84e, viewed in the main plane of extension 103e of the carrier element 22e, comprises the geometric center of the shape of the carrier element 22e and/or the protective element 84 e. Preferably, the central axis 96e of the carrier element 22e and/or the protective element 84e is arranged at least substantially perpendicularly to the main plane of extension 103e of the carrier element 22 e. Preferably, the outer edge 102e of the carrier element 22e, viewed in a main plane of extension 103e of the carrier element 22e, is part of the outer contour of the carrier element 22 e.
The protective element 84e is arranged on an outer side of the carrier element 22e, which outer side faces away from the grinding means and/or the contact surface 34e of the carrier element 22 e. The protective element 84e rests against an outer edge 102e of the carrier element 22 e. Preferably, the protective element 84e is arranged at a distance from the contact surface 34e of the carrier element 22e and/or the grinding means. The carrier element 22e has an outer surface 114e, which is at least partially covered by the protective element 84e on the side of the outer surface 114e of the carrier element 22e facing away from the contact surface 34e of the carrier element 22 e. The outer surface 114e of the carrier element 22e is oriented at least substantially perpendicularly to the main plane of extension 103e of the carrier element 22e and is arranged about the axis of movement 26a and/or the central axis 96e of the carrier element 22e and/or the protective element 84 e. In particular, outer surface 114e of carrier 22e forms outer edge 102e of carrier 22 e. The outer edge 102e of the carrier element 22e is arranged in a main plane of extension 103e of the carrier element 22e and extends at least substantially completely around the axis of movement 26a and/or the central axis 96e of the carrier element 22e and/or the protective element 84 e. The outer surface 114e of the carrier element 22e delimits the contact surface 34e of the carrier element 22e by lateral edges of the outer surface 114e of the carrier element 22 e. Protective element 84e is arranged along outer edge 102e and/or outer surface 114e of carrier element 22e at least substantially completely around movement axis 26a and/or central axis 96e of carrier element 22 e. Protective element 84e surrounds outer edge 102e of carrier element 22e, as viewed at least substantially perpendicularly to central axis 96e of carrier element 22 e. Protective element 84e extends at least for the most part over maximum thickness 50e of carrier element 22e, in particular over outer edge 102e of carrier element 22 e. Preferably, the protective element 84e has a maximum thickness 86e, in particular of at least 0.3mm, preferably at least 0.5mm, preferably at least 0.8mm and particularly preferably at least 1mm, in particular, as viewed perpendicularly to the main plane of extension 103e of the carrier element 22 e. Preferably, the maximum thickness 86e of the protective element 84e is at most 1cm, preferably at most 0.5mm and in particular at most 3 mm. Preferably, the maximum thickness 86e of the protective element 84e is less than the maximum thickness 50e of the carrier element 22 e. Preferably, the protective unit 80e, in particular the protective element 84e, is at least largely, in particular at least substantially completely, composed of a material having a melting temperature of in particular less than 350 ℃, preferably less than 300 ℃, particularly preferably less than 280 ℃ and very particularly preferably less than 260 ℃. The protective unit 80e, in particular the protective element 84e, is made of a fiber-reinforced plastic. However, other configurations of the protective element 80e, in particular of the protective element 84e, are also conceivable, for example from thermoplastics or polyamides and/or rubbers, from partially aromatic polyamides, in particular of the type Grivory GV-5H, or from polyphenylene sulfide. Preferably, protective element 84e is constructed from a material having a lesser rigidity than carrier element 22e, and in particular the material from which carrier element 22e is constructed. It is conceivable for the protective unit 80e, in particular the protective element 84e, to be designed to be replaceable, wherein in particular the protective unit 80e, in particular the protective element 84e, can be detached from the carrier element 22e without residues and/or damage. Alternatively, it is contemplated that protective unit 80e includes more than one protective element 84e disposed on carrier element 22e along outer edge 102e and/or outer surface 114e of carrier element 22 e. In particular in a configuration in which the protective unit 80e has more than one protective element 84e, it is conceivable for the protective element 84e of the protective unit 80e to cover the outer edge 102e and/or the outer surface 114e of the carrier element 22e only partially, for example in the corner region of the basic shape of the carrier element 22 e.
The protective element 84e has two outer surfaces 112e, 113e, which, in particular in the state in which at least one of the protective elements 84e is arranged on the carrier element 22e, are configured at least substantially obliquely with respect to the central axis 96e of the carrier element 22e and/or the protective element 84e, viewed in a sectional plane which includes the central axis 96e of the carrier element 22e and/or the protective element 84 e. The outer edge 98e of the protective element 84e at least partially delimits the outer surfaces 112e, 113e of the protective element 84e, in particular at least substantially completely around the center axis 96e of the carrier element 22e and/or the protective element 84 e. Preferably, the main extension plane of the protective element 84e is arranged at least substantially parallel to the main extension plane 103e of the carrier element 22e in a state in which at least one of the protective elements 84e is arranged on the carrier element 22 e. The outer surfaces 112e, 113e of the protective element 84e have a greater maximum distance 104e from the center axis 96e of the carrier element 22e and/or the protective element 84e than the outer edge 102e of the carrier element 22e, respectively, at least substantially perpendicularly to the center axis 96e of the carrier element 22e and/or the protective element 84 e. The protective element 84e has a connecting direction 116e, wherein the protective element 84e is provided for being arranged, in particular fastened, on the carrier element 22e by a movement in the connecting direction 116 e. The connecting direction 116e is arranged at least substantially parallel to the center axis 96e of the carrier element 22e and/or the protective element 84 e. The connecting direction 116e is oriented at least substantially perpendicularly to the main plane of extension of the protective element 84 e. The two outer surfaces 112e, 113e of the protective element 84e each have an angle 118e, 120e, in particular in the angular range of 8 ° to 92 °, preferably in the angular range of 15 ° to 85 ° and preferably in the angular range of 20 ° to 80 °, relative to the carrier element 22e and/or the central axis 96e of the protective element 84 e. One of the two outer surfaces 112e, 113e of the protective element 84e has an angle 118e with respect to the central axis 96e of the support element 22e and/or the protective element 84e, which angle extends in the connecting direction 116e from an, in particular virtual, intersection point 122e of a straight line running at least substantially parallel to the central axis 96e and through the outer edge 98e of the protective element 84e with the outer surface 112e of the protective element 84 e. The other outer surface 113e of the two outer surfaces 112e, 113e of the protective element 84e has an angle 120e with respect to the center axis 96e of the support element 22e and/or the protective element 84e, which angle, opposite the connecting direction 116e, is formed by a, in particular virtual, intersection point 124e of a straight line, which runs at least substantially parallel to the center axis 96e and through the outer edge 98e of the protective element 84e, with the outer surface 113e of the protective element 84 e. Preferably, the other outer surface 113e of the protective element 84e is chamfered on the outer edge of the protective element 84e facing away from the contact surface 34 e. In particular, the outer surface 112e of the protective element 84e is chamfered on the outer edge of the protective element 84e facing the contact surface 34 e. The other outer surface 113e of the protective element 84e is arranged on the side of the protective element 84e facing away from the carrier element 22e, in particular the contact surface 34 e. An outer surface 112e of the protective element 84e, viewed at least substantially perpendicularly to the carrier element 22e and/or the central axis 96e of the protective element 84e, forms a contour 126e of the protective element 84e which delimits the protective element 84e, in particular in the connecting direction 116 e. Preferably, the outer surface 112e and the further outer surface 113e of the protective element 84e are arranged spaced apart from one another on the protective element 84 e. However, it is also conceivable for the outer surface 112e of the protective element 84e and the further outer surface 113e to be at least partially delimited from one another, in particular on one side in each case. Preferably, both outer surfaces 112e, 113e, in particular the outer surface 112e and the further outer surface 113e of the protective element 84e are of planar design. However, it is also conceivable for the outer surface 112e and/or the further outer surface 113e of the protective element 84e to be curved.
The protective element 84e extends at least substantially perpendicularly to the carrier element 22e and/or the center axis 96e of the protective element 84e at least substantially completely over a maximum extent 106e of the carrier element 22e (see also fig. 8). The protective element 84e at least substantially completely surrounds the carrier element 22e, in particular when the protective unit 80e is in the assembled state, as viewed along the central axis 96e of the carrier element 22e and/or the protective element 84 e. In particular, in the assembled and/or arranged state of the protective unit 80e on the carrier element 22e, the protective element 84e is arranged at least largely, in particular at least substantially completely, along the outer edge 102e, in particular the upper outer edge 102e, of the carrier element 22e, wherein the protective element 84e in particular rests against the outer edge 102e and the outer surface 114e of the carrier element 22 e. In particular, in alternative embodiments, in which the protective unit 80e comprises more than one protective element 84e, these protective elements 84e are each arranged adjacent to an outer edge 102e of the support element 22e and in particular spaced apart from one another. However, it is also conceivable for the protective elements 84e to be arranged and/or connected to one another in an abutting manner for arrangement and/or fastening on the carrier element 22 e.
Fig. 8 shows a perspective view of the carrier element 22e and the protective element 84e, wherein in particular the protective element 84e is arranged on the carrier element 22 e. The carrier element 22e forms three holding means 108e, which are provided for the non-positive and/or positive holding of the protective element 84e of the protective unit 80e on the carrier element 22 e. However, configurations with carrier elements 22e differing from three holding means 108e are also conceivable. The carrier element 22e and the holding means 108e are constructed in one piece. The retaining means 108e is configured as a notch. In particular, the protective element 84e is formed corresponding to the carrier element 22e and the holding means 108e and is provided for a non-positive and/or positive connection to the carrier element 22e, in particular by means of the holding means 108 e. The protective element 84e forms three corresponding retaining means 128e, which are provided for interacting with the retaining means 108e for the force-fitting and/or form-fitting connection of the protective element 84e to the carrier element 22e, in particular when the protective element 84e is arranged on the carrier element 22 e. Particularly preferably, the protective element 84e and the corresponding retaining means 128e are constructed in one piece. The corresponding holding means 128e are constructed and arranged corresponding to the holding means 108e, respectively. The counter-holding means 128e is designed as a projection, which is provided in particular for engaging into the holding means 108e if the protective element 84e is arranged on the carrier element 22 e. However, other configurations of the carrier element 22e, in particular of the holding means 108e, and/or of the protective element 84e, in particular of the corresponding holding means 128e, are also conceivable. For example, it is conceivable for the corresponding retaining means 128e to be designed as a slot, which is provided for interaction with the retaining means 108e designed as a pin or other type of projection. The holding means 108e, in particular as viewed from the center axis 96e of the carrier element 22e, are each arranged in an outer edge region of the carrier element 22e, which in particular adjoins the outer edge 102e of the carrier element 22 e. The corresponding holding means 128e are arranged in each case in the outer edge region of the protective element 84e, in particular as viewed from the central axis 96e of the protective element 84 e. The holding means 108e is arranged on the side of the carrier element 22e facing away from the contact surface 34e, wherein in particular the contact surface 34e is arranged on the side of the carrier element 22e facing away from the drawing plane in fig. 8. The retaining means 108e, which is designed as a slot, extends from a side of the carrier element 22e facing away from the contact surface 34e in the connecting direction 116e and/or toward the contact surface 34e, wherein in particular the contact surface 34e is designed at a distance from the retaining means 108 e. However, it is also conceivable for the retaining means 108e, which are designed as notches, to extend over the entire thickness 50e of the carrier element 22 e. The counter-holding means 128e are arranged on the side of the protective element 84e arranged in the connecting direction 116 e. The holding means 108e are arranged uniformly distributed around the center axis 96e of the carrier element 22 e. The corresponding holding means 128e are arranged uniformly distributed around the central axis 96e of the protective element 84 e.
Fig. 9 shows a partial cross section of a further embodiment of a grinding tool arrangement 12f as part of a grinding tool system 10 f. The grinding tool device 12f has a carrier unit 16f and a fastening unit 18f for releasably fastening a grinding means 20f, in particular designed as grinding paper or grinding fleece, of the grinding tool system 10f to the carrier unit 16 f. The carrier unit 16f comprises a carrier element 22f, which is designed as a support plate on which the grinding means 20f can be arranged by means of the fastening unit 18 f. The carrier element 22f is composed of a material having a melting temperature of more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. The grinding tool arrangement 12f shown in fig. 9 has an at least substantially similar configuration to the grinding tool arrangement 12a described in the description of fig. 1 to 3, so that the description with reference to fig. 1 to 3 is at least substantially possible with regard to the configuration of the grinding tool arrangement 12f shown in fig. 9. In contrast to the grinding tool arrangement 12a described in the description of fig. 1 to 3, the fastening unit 18f of the grinding tool arrangement 12f shown in fig. 9 has an intermediate element 110f which is provided for an at least substantially damage-free, at least substantially tool-free removable and/or exchangeable arrangement between the carrier element 22f and the grinding means 20f, wherein the intermediate element 110f is composed of a material having a melting temperature of more than 180 ℃, preferably more than 200 ℃, particularly preferably more than 220 ℃, very particularly preferably more than 240 ℃ and particularly advantageously more than 250 ℃. The fastening unit 18f comprises an adhesive means 130f and two fastening elements 132f configured as a hook-and-loop connection, wherein the two fastening elements 132f are each fastened to the intermediate element 110f by the adhesive means 130f in a material-locking manner. The intermediate element 110f can be fastened to the carrier element 22f and/or the grinding means 20f by means of two fastening elements 132 f. The grinding tool arrangement 12f has a heat transfer coating 42f, which is arranged on the underside of the intermediate element 110f facing the grinding means 20 f. However, other configurations of the grinding tool arrangement 12f are also conceivable, in particular with regard to the arrangement of the heat transfer coating 42f or the absence of the heat transfer coating 42 f. The intermediate element 110f is made of metal and is at least substantially plate-shaped. It is also conceivable for the intermediate element 110f to be made of plastic, in particular polyurethane. Particularly preferably, the intermediate element 110f is composed of a material other than a plastic foam. However, a configuration of the intermediate element 110f is also conceivable, in which the intermediate element 110f is completely or at least partially made of a foamed plastic. The intermediate element 110f has a maximum thickness 134f, which is preferably less than 3mm, preferably less than 2mm and preferably less than 1.5 mm. In particular, the maximum thickness 134f of the intermediate element 110f is at least 0.5mm, preferably at least 0.8mm and preferably at least 1 mm. It is conceivable that the intermediate element 110f comprises a recess or an indentation (not shown in fig. 9) for an optimized heat distribution away from the grinding means 20f, which is arranged in particular at least partially on the underside of the intermediate element 110f facing the grinding means 20 f.
The intermediate element 110f has a bearing surface 136f, which is provided for arranging the intermediate element 110f on the carrier element 22 f. In particular, the bearing surface 136f is arranged on the side of the intermediate element 110f which faces the carrier element 22f, in particular in the assembled state of the grinding tool device 12 f. Preferably, the bearing surface 136f has, in particular as viewed along the center axis 96f of the support element 22f, at least substantially the same shape as the contact surface 34f of the support element 22 f. The intermediate element 110f comprises a contact surface 138f, which is provided for arranging the grinding means 20f on the intermediate element 110 f. Preferably, the bearing surface 136f of the intermediate element 110f, in particular as viewed along the center axis of the intermediate element 110f (which comprises the center axis 96f of the carrier element 22f, in particular in the state in which the intermediate element 110f is arranged on the carrier element 22f), has at least substantially the same shape as the basic surface of the grinding means 20f, in particular of the grinding means 20f, in the main plane of extension of the grinding means 20 f. It is conceivable for the contact surface 138f and the bearing surface 136f of the intermediate element 110f to be at least substantially of identical or different design. It is preferably conceivable for the contact surface 138f and the bearing surface 136f of the intermediate element 110f to have different geometric basic shapes from one another.
The grinding tool arrangement 12f, in particular the intermediate element 110f, and the carrier element 22f are of modular design, wherein, in particular, the operation of the grinding tool arrangement 12f and/or the grinding tool system 10f with and without the intermediate element 110f can be taken into account. The intermediate element 110f is provided for adapting the contact surface 34f of the carrier element 22f to the shape of the grinding means 20f, which may differ from the shape of the contact surface 34f, for supporting the grinding means 20 f. Preferably, the machining of workpieces with grinding devices 20f of different configuration from one another can be carried out by means of the intermediate element 110f, in particular without dismantling the carrier element 22 f. For example, a circular grinding device 20f can be used with a circular intermediate element 110f for machining a flat surface of a workpiece without exchanging and/or removing the carrier element 22 f; and/or, in the case of machining corners, the use of an intermediate element 110f configured with at least one corner, together with a corner-carrying grinding means 20f supported on this intermediate element 110 f. The intermediate element 110f is provided for adapting a counter stress of the grinding tool arrangement 12f, which counter stress acts on the grinding tool arrangement 12f, the counter stress being transmitted by the workpiece via the grinding means 20f during the machining of the workpiece, in particular for protecting the workpiece, the grinding means 20f and/or the grinding tool arrangement 12f and/or for protecting a user. For example, when working soft surfaces, such as wood, for example, less opposing stress is advantageous, as is the case, for example, when working metals, wherein, for working wood, in particular, an intermediate element 110f having a lower rigidity than the carrier element 22f is arranged between the carrier element 22f and the grinding means 20 f. In particular, it is conceivable to use a grinding tool arrangement 12f for machining metals, which has no intermediate element 110f or has a further intermediate element, which is made of a harder material, in particular, like the intermediate element 110 f.
Claims (18)
1. A grinding tool device, in particular a grinding plate, having:
at least one carrying unit (16 a; 16 b; 16 c; 16 d; 16 e; 16f), in particular a supporting disc or a supporting plate; and
at least one fastening unit (18 a; 18 b; 18 c; 18 d; 18 e; 18f) for releasably fastening a grinding means (20 a; 20 b; 20 c; 20 d; 20 e; 20f), in particular grinding sandpaper or grinding nonwoven, to the carrier unit (16 a; 16 b; 16 c; 16 d; 16 e; 16f), wherein the carrier unit (16 a; 16 b; 16 c; 16 d; 16 e; 16f) comprises at least one carrier element (22 a; 22 b; 22 c; 22 d; 22 e; 22f) on which the grinding means (20 a; 20 b; 20 c; 20 d; 20 e; 20f) is arranged by means of the fastening unit (18 a; 18 b; 18 c; 18 d; 18 e; 18f),
characterized in that the carrier element (22 a; 22 b; 22 c; 22 d; 22 e; 22f) consists of a material having a melting temperature of more than 180 ℃.
2. The grinding tool device according to claim 1, characterized in that the fastening unit (18 a; 18 b; 18 c; 18 d; 18 e; 18f) comprises at least one fastening element (28 a; 28 d; 28 e; 28f) for fastening the grinding means (20 a; 20 b; 20 c; 20 d; 20 e; 20f) on the carrier unit (16 a; 16 b; 16 c; 16 d; 16 e; 16f), in particular on the carrier element (22 a; 22 b; 22 c; 22 d; 22 e; 22f), which fastening element is composed of a material having a melting temperature of more than 160 ℃.
3. The grinding tool device according to claim 1 or 2, characterized in that the fastening unit (18 a; 18f) comprises at least one adhesive element (30 a; 30f) which is provided for exchangeable fastening of the fastening unit (18 a; 18f), in particular of a fastening element (28 a; 28f) of the fastening unit (18 a; 18f) which is designed as a hook-and-loop connection, to the carrier element (22 a; 22 f).
4. The grinding tool device according to one of the preceding claims, characterized in that the carrier unit (16 a; 16 b; 16 c; 16 d; 16 e; 16f), in particular the carrier element (22 a; 22 b; 22 c; 22 d; 22 e; 22f), has a maximum thickness of at most 5mm perpendicular to the contact surface (34 a; 34 b; 34 c; 34 d; 34 e; 34f) of the carrier unit (16 a; 16 b; 16 c; 16 d; 16 e; 16f) with the fastening unit (18 a; 18 b; 18 c; 18 d; 18 e; 18 f).
5. The grinding tool device according to any of the preceding claims, characterized by at least one heat transfer coating (42 a; 42f) arranged between the carrier unit (16 a; 16 b; 16 c; 16 d; 16 e; 16f), in particular the carrier element (22 a; 22 b; 22 c; 22 d; 22 e; 22f), and the fastening unit (18 a; 18 b; 18 c; 18 d; 18 e; 18f), and/or on a side of the fastening unit (18 a; 18 b; 18 c; 18 d; 18 e; 18f) facing away from the carrier unit (16 a; 16 b; 16 c; 16 d; 16 e; 16f), in particular the carrier element (22 a; 22 b; 22 c; 22 d; 22 e; 22 f).
6. The grinding tool device according to one of the preceding claims, characterized in that the fastening unit (18 a; 18 b; 18 c; 18 d; 18 e; 18f) comprises at least one fastening element (28 a; 28 d; 28 e; 28f), wherein the fastening element (28 a; 28 d; 28 e; 28f) bears at least substantially over the entire surface against the carrier element (22 a; 22 b; 22 c; 22 d; 22 e; 22 f).
7. The grinding tool device according to one of the preceding claims, characterized by at least one protective unit (80 a; 80e) which is arranged on the carrier element (22 a; 22e) and is provided for protecting a workpiece, the carrier element (22 a; 22e) or an external unit, in particular from damage, in particular during grinding, and/or for damping, in particular direct, impacts of the carrier element (22 a; 22e) on the workpiece or on the external unit.
8. The grinding tool device according to claim 7, characterized in that the protective unit (80 a; 80e), in particular the protective element (84 a; 84e) of the protective unit (80 a; 80e), has a melting temperature of more than 220 ℃.
9. The grinding tool device according to claim 7 or 8, characterized in that the protective unit (80 a; 80e) comprises at least one protective element (84 a; 84e), wherein the protective element (84 a; 84e) has an outer edge (98 a; 98e) as viewed along the center axis (96 a; 96e) of the carrier element (22 a; 22e), which has a greater minimum distance (100e) from the center axis (96 a; 96e) of the carrier element (22 a; 22e) than the outer edge (102 a; 102e) of the carrier element (22 a; 22 e).
10. The grinding tool device according to one of claims 7 to 9, characterized in that the protective unit (80 a; 80e) comprises at least one protective element (84 a; 84e) having at least one outer surface (112e, 113e) which has a greater maximum spacing (104e) relative to the center axis (96 a; 96e) of the carrier element (22 a; 22e) than the outer edge (102 a; 102e) of the carrier element (22 a; 22e) at least substantially perpendicularly to the center axis (96 a; 96e) and which is configured at least substantially obliquely relative to the center axis (96 a; 96e) of the carrier element (22 a; 22e) when viewed in a sectional plane which includes the center axis (96 a; 96e) of the carrier element (22 a; 22 e).
11. The grinding tool device according to one of the claims 7 to 10, characterized in that the protective unit (80 a; 80e) comprises at least one protective element (84 a; 84e) which extends at least substantially perpendicularly to the center axis (96 a; 96e) of the carrier element (22 a; 22e) at least for the most part, in particular at least substantially completely, over the maximum extent (106e) of the carrier element (22 a; 22 e).
12. The grinding tool device according to one of claims 7 to 11, characterized in that the carrier element (22e) forms at least one holding means (108e) which is provided for non-positive and/or positive holding of the protective unit (80e), in particular of the protective element (84e) of the protective unit (80e), on the carrier element (22 e).
13. The grinding tool arrangement according to any one of the preceding claims, characterized in that the fastening unit (18f) comprises at least one intermediate element (110f) which is provided for being arranged, in particular at least substantially without destruction, at least substantially without tool removal and/or replaceably, between the carrier element (22f) and the grinding means (22f), wherein the intermediate element (110f) is composed of a material having a melting temperature of more than 180 ℃.
14. The grinding tool arrangement according to any one of the preceding claims, characterized in that the carrier element (22 b; 22c) is configured as a support bar structure (64 b; 64 c).
15. The grinding tool device according to claim 14, characterized in that the carrier unit (16b) comprises at least one support element (69b), wherein the support element (69b) at least largely surrounds the carrier element (22b), and wherein the heat conduction characteristic of the support element (69b) is greater than the heat conduction characteristic of the carrier element (22 b).
16. An abrasive device, comprising:
at least one working surface (54 a; 54 d; 54f) having a plurality of grinding elements; and
at least one interface (76d) or connection face (53 a; 53f) for arranging or connecting a fastening unit (18 a; 18 b; 18 c; 18 d; 18 e; 18f) of a grinding tool device (12 a; 12 b; 12 c; 12 d; 12 e; 12f) according to one of the preceding claims,
the interface (76d) or the connection surface (53 a; 53f) has at least one fastening element (78 a; 78 d; 78f), which is designed in particular as a hook-and-loop connection and is made of a material having a melting temperature of more than 160 ℃.
17. An abrading device according to claim 16, characterized by at least one heat transfer coating (60 a; 60d) arranged between the working surface (54 a; 54 d; 54f) and the fastening element (78 a; 78 d; 78 f).
18. A grinding tool system having at least one grinding tool arrangement (12 a; 12 b; 12 c; 12 d; 12 e; 12f) according to any one of claims 1 to 15 and at least one grinding means (20 a; 20 b; 20 c; 20 d; 20 e; 20f) according to claim 16 or 17.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019213375 | 2019-09-04 | ||
| DE102019213375.4 | 2019-09-04 | ||
| DE102020207733.9 | 2020-06-23 | ||
| DE102020207733.9A DE102020207733A1 (en) | 2019-09-04 | 2020-06-23 | Abrasive tool device, abrasive and abrasive tool system |
| PCT/EP2020/074557 WO2021043881A1 (en) | 2019-09-04 | 2020-09-03 | Grinding tool device, grinding means, and grinding tool system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114340847A true CN114340847A (en) | 2022-04-12 |
Family
ID=74564860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080062163.6A Pending CN114340847A (en) | 2019-09-04 | 2020-09-03 | Grinding tool device, grinding device and grinding tool system |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20220297265A1 (en) |
| EP (1) | EP4025385A1 (en) |
| CN (1) | CN114340847A (en) |
| DE (1) | DE102020207733A1 (en) |
| WO (1) | WO2021043881A1 (en) |
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- 2020-06-23 DE DE102020207733.9A patent/DE102020207733A1/en active Pending
- 2020-09-03 WO PCT/EP2020/074557 patent/WO2021043881A1/en unknown
- 2020-09-03 US US17/637,388 patent/US20220297265A1/en active Pending
- 2020-09-03 CN CN202080062163.6A patent/CN114340847A/en active Pending
- 2020-09-03 EP EP20768003.4A patent/EP4025385A1/en active Pending
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Also Published As
| Publication number | Publication date |
|---|---|
| EP4025385A1 (en) | 2022-07-13 |
| WO2021043881A1 (en) | 2021-03-11 |
| US20220297265A1 (en) | 2022-09-22 |
| DE102020207733A1 (en) | 2021-03-04 |
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