EP3999282A1 - Abrasive segment for an abrasive roll, grinding machine, and use - Google Patents
Abrasive segment for an abrasive roll, grinding machine, and useInfo
- Publication number
- EP3999282A1 EP3999282A1 EP20742152.0A EP20742152A EP3999282A1 EP 3999282 A1 EP3999282 A1 EP 3999282A1 EP 20742152 A EP20742152 A EP 20742152A EP 3999282 A1 EP3999282 A1 EP 3999282A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- abrasive
- segment
- layer
- grinding roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000227 grinding Methods 0.000 title claims description 249
- 239000010410 layer Substances 0.000 claims description 112
- 239000012530 fluid Substances 0.000 claims description 37
- 239000011230 binding agent Substances 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 7
- 239000012790 adhesive layer Substances 0.000 claims description 6
- 239000010431 corundum Substances 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 239000006061 abrasive grain Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052582 BN Inorganic materials 0.000 claims description 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 239000000344 soap Substances 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 34
- 230000008569 process Effects 0.000 description 34
- 239000000463 material Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 5
- 238000003860 storage Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003082 abrasive agent Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
- B24D13/147—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face comprising assemblies of felted or spongy material; comprising pads surrounded by a flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
-
- 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
- B24D9/04—Rigid drums for carrying flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D99/00—Subject matter not provided for in other groups of this subclass
- B24D99/005—Segments of abrasive wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B57/00—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents
- B24B57/02—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents
Definitions
- the present invention relates to a grinding segment for a grinding roller, comprising at least one carrier body for the form-fitting attachment of the grinding segment to a lateral surface of the grinding roller and at least one essentially flat abrasive layer.
- the present invention further relates to a grinding roller for machining a surface of a workpiece and / or a surface of a negative mold for producing the workpiece, the grinding roller having an essentially cylindrical base body with a lateral surface.
- the present invention further relates to a grinding machine with at least one grinding roller according to the invention including grinding segments according to the invention and at least one rotary drive.
- the present invention also relates to a use of such a grinding segment, such a grinding roller or such a grinding machine.
- Such a grinding segment is already known from DE 20 2005 016 671 U1, in which the abrasive is attached to a support means with a Velcro strip in such a way that the abrasive layer is oriented normally to the outer surface of the grinding roller and when the grinding segment comes into contact with a workpiece the grinding segment is elastically deformed in one direction.
- a disadvantage of the prior art is that, due to the orientation of the abrasive layer normal to the outer surface of the grinding roller during rotation in the grinding process, the removal rate is only effective to a limited extent, since the force on the workpiece due to elastic deformation of the grinding segment is not optimally applied to the Workpiece is transferable.
- the grinding segment follows the contour during the removal process and therefore does not contribute significantly to the leveling of a surface of the workpiece.
- the grinding segment described in DE 20 2005 016 671 U1 is provided with an elastically deformable support means, in which case it is preferably a elastically bendable material such as a brush, foam or other suitable material.
- the disadvantage of the prior art is that the elastically flexible materials are adapted to the deformation during the grinding process, but are not designed for grinding fluid supply and / or grinding fluid storage.
- Such a grinding roller is known from DE 20 2005 016 671 U1, which has mounted grinding segments which are provided with an abrasive layer which are oriented normally to the jacket surface.
- the disadvantage of the prior art is that material can only be removed in one direction of rotation without retooling the attached grinding segments.
- a grinding machine with grinding segments is known from DE 20 2005 016 671 U1, in which the grinding segments are arranged in the grinding roller in such a way that the abrasive layer is oriented normally to the outer surface of the grinding roller and thus the direction of rotation of the grinding roller after assembly of the grinding roller Function of the abrasive layer is determined.
- the disadvantage here is that due to the orientation of the abrasive layer normally on the outer surface of the grinding roller during the rotation in the grinding process, no automatic propulsion can be generated, even in the only direction of rotation possible for the grinding process, due to the abrasive layer normally oriented on the outer surface of the grinding roller, which is preferably for large ones Workpieces with manual processing is necessary and also no high removal rate is possible.
- the technical problem according to the first aspect of the present invention is therefore to provide a grinding segment that is improved over the prior art indicate in which the disadvantages of the prior art are at least partially eliminated, and which is characterized in particular by an abrasive layer that enables increased material removal and the material removal by the grinding segment also contributes to a significant leveling of the workpiece surface.
- the technical task according to the second aspect consists in specifying a grinding segment which ensures an effective grinding fluid supply and storage of grinding fluid and is matched to parameters relevant for the removal process such as vibration, sound, heat, surface shape, etc., whereby it is not necessary for comfortable handling and / or long service life has to be dispensed with and the grinding result is improved.
- a further object according to a third aspect of the present invention consists in specifying a grinding roller which is improved over the prior art, in which the disadvantages of the prior art are at least partially eliminated, and which is characterized in particular by the fact that the grinding roller in both for the Removal process relevant directions of rotation can be used.
- a further object according to a fourth aspect of the present invention is to provide a grinding machine which is improved over the prior art, in which the disadvantages of the prior art are at least partially eliminated, and which is characterized by user-friendly handling of large grinding rolls (from one Roller length and / or a roller diameter of approx. 300 mm) as well as a high possible removal rate on the workpiece.
- a further object according to a fifth aspect of the present invention consists in specifying a use of the grinding segment, the grinding roller or the grinding machine which is improved over the prior art.
- the object according to the first aspect is achieved by the features of claim 1. It is accordingly provided according to the invention that the at least one abrasive layer, when the grinding segment is attached to the grinding roller, is oriented essentially parallel to the outer surface of the grinding roller and at least one elastic intermediate layer is arranged between the at least one carrier body and the at least one abrasive layer.
- the parallel alignment of the abrasive layer to the outer surface ensures efficient leveling of the surface to be processed, with residues in particular being effectively treated and the surface being corrected and leveled locally to the conditions in the surrounding area.
- Compensating materials are increasingly bumps and residues, which can be effectively removed by this grinding segment.
- the term elastic means that the intermediate layer can be compressed under the influence of force and that the intermediate layer returns to its original shape when no more force is exerted. This property essentially achieves two advantages, namely that the layer has a pressure equalizing effect and has a dampening effect during the grinding process.
- At least one elastic intermediate layer which essentially consists of felt, is arranged between the at least one carrier body and the at least one abrasive layer. This only enables a structure of the elastic intermediate layer to be formed due to the sponge-like nature, which is optimally suitable for the removal process both for fluid absorption, fluid storage and fluid delivery.
- the grinding segment can be operated both with dry grinding and with the use of grinding fluid.
- the elastic properties of felt have high compressive elasticity and resistance, which means that hardly any creases occur, which would be detrimental to the grinding process.
- felt is sound-absorbing and insulates efficiently against speed, whereby these properties ensure both more comfort in operation and better sanding results, especially when using the sanding segment.
- the upholstery ensures protection against excessive mechanical stress on all components involved, such as the abrasive layer, carrier body and / or workpiece.
- the adaptation of the properties of the felt to the individual requirements of the surface to be processed can also be controlled via the density of the underlying felt layer.
- the sanding segment with the elastic intermediate layer consisting of felt offers the possibility of dealing with special and demanding curved areas such as convex or concave geometries without great expense or expenditure of resources by adding the elastic intermediate layer of felt to the curvature of the workpiece to be processed follows.
- the thickness of the elastic intermediate layer of felt can additionally vary in a thickness over at least one length of the grinding segment.
- felt as a supporting elastic intermediate layer thus offers the advantage that both the necessary pressure for the effective removal of the carrier element is transferred to the workpiece via the abrasive layer and complex surfaces can be traced in the contour.
- the vibration-inhibiting property of felt which can be adapted to the conditions in the removal process through its specific composition, enables user-friendly and comfortable operation of the grinding segment, which, due to the low specific density, essentially does not add any additional weight for handling.
- At least one such grinding segment is attached to the jacket surface in a form-fitting manner.
- the at least one grinding roller can be set in rotation with the at least one rotary drive in order to bring about a relative movement of the at least one abrasive layer to the surface of the workpiece and / or the negative form to be processed.
- the abrasive layer makes it possible for the abrasive layer to be oriented essentially parallel to the outer surface of the grinding roller and for both directions of rotation to be provided with automatic propulsion during the grinding process. This enables simple operation of grinding rollers with an elongated extension of up to 800 mm.
- the grinding segments Due to the elastic intermediate layer, the grinding segments also ensure large-area contact and effective removal by the abrasive layer over the entire length of the grinding roller.
- the at least one elastic intermediate layer is designed in such a way that a grinding fluid, in particular water, can be stored and dispensed in it, and / or is designed without abrasive.
- the workpiece surface which is initially free of abrasives
- the abrasive layer in wet sanding, namely to the effect that a grinding fluid stored in the elastic intermediate layer can escape during the removal process and grinding dust that forms on the abrasive layer during grinding can be efficiently washed away.
- the abrasive prevents increased heat build-up and thus protects both the abrasive layer and the surface of the workpiece and / or the negative mold.
- the abrasive-free elastic intermediate layer means that additional cleaning work for the user of the grinding segment can be dispensed with.
- the at least one carrier body is essentially T-shaped in cross section and / or is designed in such a way that the carrier body can be fastened in a form-fitting manner via a dovetail connection on the outer surface of the grinding roller.
- the form fit is given to a greater extent, since fixation takes place not only in a direction transverse to the dovetail connection, but also in a direction perpendicular to the groove.
- the grinding segment is fixed on the grinding roller by a structural closure.
- the at least one support body comprises at least one support surface on which the at least one elastic intermediate layer is supported at least in some areas, preferably wherein the at least one support surface is oriented essentially parallel to the at least one flat abrasive layer. Since this arrangement ensures the parallel alignment of both the abrasive layer and the carrier body on the outer surface of the grinding roller, the forces that are necessary for the removal process and that arise during the removal process act to a large extent in the radial direction of the grinding roller. This is advantageous for an effective and gentle removal process.
- the at least one elastic intermediate layer is attached to the at least one carrier body and / or to the at least one abrasive layer with an adhesive layer.
- the adhesive layer as a binding agent is, on the one hand, cost-saving and, in terms of its function, sufficient for demanding removal processes.
- the worn parts After the end of the service life of the support body, elastic intermediate layer or abrasive layer, the worn parts can be changed quickly thanks to the adhesive layer without high material requirements.
- the at least one elastic intermediate layer has a thickness, the thickness being at least three times as great as a layer thickness of the at least one abrasive layer.
- the abrasive layer particularly preferably has a layer thickness in the range between 0.6 mm and 1.5 mm.
- the elastic intermediate layer preferably has a thickness in the range between 5 mm and 12 mm, particularly preferably in the range between 8 mm and 10 mm.
- the elastic intermediate layer only unfolds the full extent of its positive material-specific aspects for the removal process from a certain thickness.
- the at least one abrasive layer comprises at least one abrasive, preferably diamond, cubic boron nitride, sintered corundum and / or an abrasive with zirconium corundum, aluminum oxide and / or silicon carbide, preferably wherein the at least one abrasive has an abrasive grain size between 50 gm and 745 gm, and / or is embedded in at least one binder, preferably a resin binder, preferably wherein the abrasive layer is arranged on a carrier layer.
- the outer surface is provided with at least one groove for receiving at least one grinding segment, preferably wherein the at least one groove is essentially dovetail-shaped in the embodiment, and the at least one grinding segment is positively fixed therein.
- the at least one groove is arranged obliquely to a longitudinal direction of the grinding roller, preferably at an angle between 1 ° and 10 °, particularly preferably at an angle between 2 ° and 3.5 °
- the angle of the at least one groove enables a subsequent grinding segment to come into contact with the workpiece in an end phase of the sliding contact of a first grinding segment, thereby reducing the times in which the workpiece is not in contact with the at least one Grinding segment.
- the grinding result is therefore improved by inclining the at least one groove in relation to the longitudinal direction of the grinding roller and the grinding segments located therein. Since the carrier bodies of the grinding segments are essentially T-shaped, the at least one corresponding groove provides a non-positive connection for the grinding segments on the outer surface of the grinding roller. A dovetail-shaped connection offers a secure and non-positive connection between the grinding segment and the grinding roller, especially when there are high loads in the removal process.
- At least one, preferably essentially cylindrical, opening for at least one tool holder is arranged on at least one end face of the essentially cylindrical base body, preferably with exactly two openings being arranged on the at least one end face.
- the arrangement of the openings on the front side enables the grinding segments to extend over the full lateral extent of the grinding roller.
- Grinding machine or grinding robot can be transferred and compensated.
- At least one locking mechanism, at least one cover and at least one opening, wherein the opening is arranged in at least one cover and the at least one locking mechanism can be inserted into the at least one opening for locking of the at least one grinding segment are arranged on at least one of the end faces of the essentially cylindrical base body.
- locking can also take place in a user-friendly manner after it has been installed on a sanding roller or a sanding robot.
- At least one handle preferably provided with at least one grinding fluid supply, is provided for manual guidance of the grinding machine.
- the handle ensures comfortable handling even for large and heavy sanding drums.
- the grinding medium layer is supplied with grinding fluid without an externally operated grinding fluid supply. This saves unnecessary work steps in the removal process and also offers more convenient handling of the grinding machine or the grinding robot.
- At least one robot arm is provided, at the end of which at least one tool holder of at least one grinding roller, preferably wherein the tool holder is provided with at least one grinding fluid supply, is arranged.
- This enables the grinding roller to be used even on surfaces of the workpiece or the negative form that are difficult to access, and the abrasive layer is additionally supplied with grinding fluid.
- a grinding segment as described above and / or a grinding roller as described above for processing a surface of a workpiece preferably coated with a coating to protect against environmental influences, preferably providing that at least one area of the workpiece adjoining the surface to be processed consists of a carbon fiber and / or glass fiber composite material, or a surface, preferably coated with wax, of a negative mold for the production of a workpiece, which is preferably at least partially made of a carbon fiber and / or glass fiber composite material.
- the mentioned uses take place in a particularly advantageous form for use on the workpiece, which is designed as a wing or fuselage of an aircraft, parts of a ship, parts of a train or as a rotor blade of a wind turbine.
- a grinding fluid preferably water, particularly preferably water mixed with soap.
- Fig. 1 a is an exploded view of a grinding segment in its
- FIG. 1 b shows a grinding segment in its entirety according to a second preferred exemplary embodiment in a perspective view with a detailed view of an elastic intermediate layer of felt;
- FIG. 2 shows a grinding roller in its entirety in a perspective view according to a preferred exemplary embodiment with mounted grinding segments according to the one shown in FIG. 1a or 1b shown embodiment
- 3a shows a grinding machine according to a first preferred one
- FIG. 3 b shows the grinding machine according to a second preferred
- FIG. 4 a shows the use of a grinding roller according to the embodiment shown in FIG. 2 shown
- FIG. 4b shows the use of a grinding roller according to that shown in FIG.
- Exemplary embodiment without grinding segments in a view in a radial direction without grinding segments in a view in a radial direction.
- the carrier body 3 is T-shaped, the T-shape comprising a dovetail-shaped web which is intended for a dovetail connection (see FIG. 2) for a form-fitting connection.
- a length of the carrier body 3 is arbitrary per se. However, lengths that are suitable for the removal process of extensive surface geometries are particularly preferred.
- the elastic intermediate layer 7 is cuboid. However, this can also deviate from this cuboid shape and / or be adapted to special surface geometries to be treated.
- the elastic intermediate layer 7 can be trapezoidal.
- the abrasive layer 6 has a thickness 16, the abrasive layer 6 comprising an abrasive 17, preferably diamond 18, cubic boron nitride 19, sintered corundum 52 and / or an abrasive 17 with zirconium corundum 20, aluminum oxide 21 and / or silicon carbide 22.
- the exact composition of the abrasive 17 and abrasive grain size 18 is arbitrary per se.
- the one abrasive 17 particularly preferably has an abrasive grain size 18 between 50 ⁇ m and 745 ⁇ m.
- the abrasive 17 is held together by a binder 23.
- the grinding means 17 is particularly preferably embedded in a resin binder 24, but can also be embedded in a material other than binder 23.
- the abrasive layer 6 is arranged on a carrier layer 49.
- the material of the carrier layer 49 is arbitrary per se and is also not absolutely necessary.
- the abrasive layer 6 can also be applied directly to the elastic intermediate layer 7.
- a carrier layer 49 made of textile is particularly preferred.
- the elastic intermediate layer 7 is attached to the support body 3 and / or to the abrasive layer 6 with an adhesive layer 14.
- the adhesive layer 14 can be applied over the whole area or only in areas.
- the elastic intermediate layer 7 has a thickness 15, the thickness 15 being many times greater than a layer thickness 16 of the abrasive layer 6. Particularly preferably, the thickness 15 is at least three times the layer thickness 16 of the abrasive layer 6.
- the abrasive layer 6 is applied to the carrier layer 49.
- the abrasive layer 6 can be applied over the whole area or only in certain areas on the carrier layer 49.
- 1 b shows a grinding segment 1 with an elastic intermediate layer 7, which consists of felt 8.
- the carrier body 3 comprises a support surface 13 on which the elastic intermediate layer 7 is supported at least in some areas.
- the support surface 13 is aligned parallel to the flat abrasive layer 6.
- the elastic intermediate layer 7 is designed in such a way that a grinding fluid 9, in particular water 10, can be stored and dispensed in it, and / or is designed without abrasive.
- the elastic intermediate layer 7, the support surface 13 and the abrasive layer 6 are aligned essentially parallel and have an angle of essentially 90 ° to a radial direction of a grinding roller 2 (not shown for reasons of clarity).
- the composition of the grinding fluid 9 is arbitrary per se. Particularly preferably, water 10 mixed with soap 48 is present in the grinding fluid 9.
- the grinding fluid 9 is stored in the fibers 50 of the felt 8 and penetrates between the fibers 50 of the felt 8 when the grinding fluid 9 is released to the abrasive material layer 6.
- the elastic intermediate layer 7 is also possible in the form of foams or plastics.
- the thicknesses of the individual components of the grinding segment 1 can be designed differently.
- FIG. 2 shows a grinding roller 2 with a cylindrical base body 28 which has a lateral surface 5. Grinding segments 1 are fastened in a form-fitting manner on the lateral surface 5.
- the lateral surface 5 is provided with grooves 29 for receiving grinding segments 1.
- the grooves 29 are designed in the form of a dovetail.
- the grinding segments 1 are fixed positively in the grooves 29.
- a cover 53 is arranged on an end face 30 of the cylindrical base body 28 and has two openings 54. Two locking mechanisms 33 engage in these two openings in order to fix the plurality of grinding segments 1 in an axial direction.
- Two cylindrical openings 31 for a tool holder 32 are arranged on an end face 30 of the cylindrical base body 28.
- the cylindrical openings 31 can be arranged on one or on both end faces 30 of the grinding roller 2.
- the number of cylindrical openings 31 is arbitrary per se. That embodiment is particularly preferred in which the end face 30 comprises two eccentric cylindrical openings 31.
- a locking mechanism 33 is arranged on one of the end faces 30 of the cylindrical base body 28 for locking the grinding segments 1.
- the grinding segments 1 are arranged radially outward on the lateral surface 5.
- the distance 51 between the grinding segments is arbitrary per se. An equidistant arrangement of the grinding segments 1 is particularly preferred. The distance 51 between the grinding segments 1 should not be chosen so large that the result of the removal process is impaired.
- the grinding roller 2 can have a roller diameter in the range between 80 mm and 400 mm.
- the grinding roller 2 can have a roller length in the range between 50 mm and 800 mm.
- 3a shows a grinding machine 34 with a grinding roller and a rotary drive 35, with which the one grinding roller 2 can be set in rotation in order to bring about a relative movement 36 of the one abrasive layer 6 to the surface 25 of the workpiece 26 to be processed and / or the negative form 27.
- a handle 35 is provided for manually guiding the grinding machine 34.
- the handle 35 is provided with a grinding fluid supply 36, the grinding fluid supply 36 being fixed on and / or in the handle 35 in such a way that the operator is not hindered in handling the grinding machine 34.
- the handle 35 can be designed for one-armed or two-armed operation.
- 3b shows a robot arm 37, at the end 38 of which a tool holder 32 of a grinding roller 2 is provided.
- the tool holder 32 is provided with a grinding fluid supply 36. In a further exemplary embodiment, however, this can also be mounted on the robot arm 37 or on another component of the grinding machine 34. If no grinding fluid supply 36 is necessary for the removal process, this can also be omitted entirely.
- the grinding fluid 9 is passed on to the grinding roller 2 via the grinding fluid supply 36.
- FIG. 4 a shows the use of grinding segments 1, a grinding roller 2 or a grinding machine 34 for processing a surface 25 of a workpiece 26 coated with a coating 39 for protection against environmental influences.
- the workpiece 26 is arbitrary in nature. However, it is particularly preferred to use the grinding segments 1, grinding roller 2 or grinding machine 34 for the abrasive process on wings or fuselages 44 of an aircraft, rotor blades 45 of a wind turbine, parts of a ship or parts of a train.
- the workpiece 26 can, however, also be formed from other extensive geometries 46 made from composite materials 47.
- a region 40 of the workpiece 26 adjoining the surface 25 to be machined consists at least partially of a carbon fiber 41 and / or glass fiber composite 42.
- FIG. 4b shows a surface 25, coated with wax 43, of a negative mold 27 for positioning a workpiece 26 (visible in FIG. 4a).
- the supply of the grinding fluid 9 can optionally be dispensed with.
- Fig. 5 shows a grinding roller 2 before being fitted with grinding segments 1,
- the grooves 29, in which the grinding segments 1 are positively fixed have an angle in the range between 1 ° and 10 °, particularly preferably between 2 ° and 3.5 °, to a longitudinal direction of the grinding roller 2, but can also be parallel to the longitudinal direction the grinding roller 2 be arranged.
- the longitudinal direction of the grinding roller 2 is defined by the axial direction (axis of rotation) of the grinding roller 2 and is thus arranged normal to the direction of rotation or a radial direction of the grinding roller 2.
- the grooves 29 are continuous up to this facing side and end in front of an opposite side in order to enable a form fit of the grinding segments 1 (not shown for reasons of clarity) in the grinding roller 2 by closing off the grooves 29.
- the cover 53 is released from the locking mechanisms 33 (for example by twisting) via the openings 54. This disassembly has already taken place in FIG. 5.
- the grinding segments 1 are then inserted into the grooves 29 up to the end of the grooves 29, in order to subsequently fasten the cover 53 again on the grinding roller 2 and to fix the grinding segments 1 in the longitudinal direction.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50642/2019A AT522810B1 (en) | 2019-07-16 | 2019-07-16 | Grinding segment for a grinding roller |
PCT/AT2020/060266 WO2021007603A1 (en) | 2019-07-16 | 2020-07-09 | Abrasive segment for an abrasive roll, grinding machine, and use |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3999282A1 true EP3999282A1 (en) | 2022-05-25 |
EP3999282B1 EP3999282B1 (en) | 2023-02-22 |
Family
ID=71661597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20742152.0A Active EP3999282B1 (en) | 2019-07-16 | 2020-07-09 | Abrasive segment for an abrasive roll, grinding machine, and use |
Country Status (9)
Country | Link |
---|---|
US (1) | US20220134511A1 (en) |
EP (1) | EP3999282B1 (en) |
CN (1) | CN114173994A (en) |
AT (1) | AT522810B1 (en) |
BR (1) | BR112022000001A2 (en) |
CA (1) | CA3146003A1 (en) |
DK (1) | DK3999282T3 (en) |
ES (1) | ES2941624T3 (en) |
WO (1) | WO2021007603A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11373963B2 (en) | 2019-04-12 | 2022-06-28 | Invensas Bonding Technologies, Inc. | Protective elements for bonded structures |
US11205625B2 (en) * | 2019-04-12 | 2021-12-21 | Invensas Bonding Technologies, Inc. | Wafer-level bonding of obstructive elements |
AT524747B1 (en) | 2021-02-19 | 2022-11-15 | Tyrolit Schleifmittelwerke Swarovski Kg | Distance device for a grinding roller |
Family Cites Families (22)
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US2000611A (en) * | 1934-03-12 | 1935-05-07 | Maurice N Prange | Abrasive stone holder |
US2067089A (en) * | 1934-05-22 | 1937-01-05 | Carborundum Co | Yieldably mounted abrasive elements |
FR1477309A (en) * | 1966-04-26 | 1967-04-14 | Carborundum Co | Improvements to abrasive cutting wheels |
DE7530623U (en) * | 1975-05-16 | 1976-02-05 | Diamant Boart, Forest, Bruessel (Belgien) | SEGMENT GRINDING HEAD |
DE19845166B4 (en) * | 1998-10-01 | 2004-05-19 | Monti-Werkzeuge Gmbh | Rotary tool in the embodiment of a ring disc for surface processing |
JP4022016B2 (en) * | 1999-03-03 | 2007-12-12 | 富士フイルムホールディングス株式会社 | Brush roll assembly structure |
DE69905135T2 (en) * | 1999-04-16 | 2003-06-05 | F.I.M.A.D. S.R.L., Solbiate Arno | Polishing machine with a rotary head that supports a multitude of polishing sectors with segmented and elastic structures |
JP3445229B2 (en) * | 2000-03-03 | 2003-09-08 | 株式会社ティ・ケー・エックス | Cylindrical whetstone |
US7235296B2 (en) * | 2002-03-05 | 2007-06-26 | 3M Innovative Properties Co. | Formulations for coated diamond abrasive slurries |
CN2543662Y (en) * | 2002-09-29 | 2003-04-09 | F.I.M.A.D.有限公司 | Rotory grinding head with spring grinder for polishing-machine |
RU2261167C1 (en) * | 2004-03-22 | 2005-09-27 | Орловский государственный технический университет (ОрелГТУ) | Elastic polishing wheel made of diamond-abrasive cloth |
US7195549B2 (en) * | 2004-08-23 | 2007-03-27 | Saint-Gobain Abrasives, Inc. | Drum grinding wheel |
DE202005008623U1 (en) * | 2005-05-31 | 2005-08-11 | Mb Maschinenbau Gmbh | Grinding and polishing device e.g. for border area of sheet shaped work piece, has workpiece which can be rotatable in horizontal direction with working elements provided on belt and multiplicity elements extend to flat working surface |
DE202005016671U1 (en) * | 2005-10-23 | 2005-12-22 | Mb Maschinenbau Gmbh | Grinding segment for rotatable grinding wheel, has adhesive tape fastened on to supporting device by gluing, where replacement of grinding component fastened with backing material by gluing is ensured by adhesive tape |
TW200836882A (en) * | 2007-03-08 | 2008-09-16 | Ri-Sheng Chen | Ceramic brush wheel |
IT1395517B1 (en) * | 2008-11-21 | 2012-09-28 | Discotelsisal S P A | IMPROVED ABRASIVE TAPE AND DEVICE FOR SURFACE GRINDING EQUIPPED WITH SUCH TAPE |
CN201405271Y (en) * | 2009-04-30 | 2010-02-17 | 广东奔朗新材料股份有限公司 | High copy polishing grinding block |
CN201399730Y (en) * | 2009-05-16 | 2010-02-10 | 广东奔朗新材料股份有限公司 | Grinding block |
AT511967B1 (en) * | 2011-12-01 | 2013-04-15 | Swarovski Tyrolit Schleif | GRINDING TOOL AND METHOD FOR THE PRODUCTION THEREOF |
JP3177212U (en) * | 2012-05-11 | 2012-07-26 | 有限会社研友社 | Grinding wheel |
CN107116489B (en) * | 2017-04-18 | 2019-09-06 | 安徽振达刷业有限公司 | A kind of twill polishing roll brush and its production technology |
CN206780156U (en) * | 2017-06-06 | 2017-12-22 | 东莞市中微纳米科技有限公司 | Water flowing elasticity finishing grinding wheel |
-
2019
- 2019-07-16 AT ATA50642/2019A patent/AT522810B1/en active
-
2020
- 2020-07-09 WO PCT/AT2020/060266 patent/WO2021007603A1/en unknown
- 2020-07-09 DK DK20742152.0T patent/DK3999282T3/en active
- 2020-07-09 CN CN202080051304.4A patent/CN114173994A/en active Pending
- 2020-07-09 CA CA3146003A patent/CA3146003A1/en active Pending
- 2020-07-09 EP EP20742152.0A patent/EP3999282B1/en active Active
- 2020-07-09 ES ES20742152T patent/ES2941624T3/en active Active
- 2020-07-09 BR BR112022000001A patent/BR112022000001A2/en not_active Application Discontinuation
-
2022
- 2022-01-12 US US17/574,112 patent/US20220134511A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
BR112022000001A2 (en) | 2022-05-24 |
US20220134511A1 (en) | 2022-05-05 |
AT522810B1 (en) | 2023-02-15 |
ES2941624T3 (en) | 2023-05-24 |
EP3999282B1 (en) | 2023-02-22 |
WO2021007603A1 (en) | 2021-01-21 |
AT522810A1 (en) | 2021-02-15 |
DK3999282T3 (en) | 2023-05-01 |
CA3146003A1 (en) | 2021-01-21 |
CN114173994A (en) | 2022-03-11 |
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