EP3187305B1 - Plateau de meule et abrasif - Google Patents

Plateau de meule et abrasif Download PDF

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Publication number
EP3187305B1
EP3187305B1 EP16206563.5A EP16206563A EP3187305B1 EP 3187305 B1 EP3187305 B1 EP 3187305B1 EP 16206563 A EP16206563 A EP 16206563A EP 3187305 B1 EP3187305 B1 EP 3187305B1
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EP
European Patent Office
Prior art keywords
dust
laden air
grinding plate
abrasive
flow
Prior art date
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Active
Application number
EP16206563.5A
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German (de)
English (en)
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EP3187305A2 (fr
EP3187305A3 (fr
Inventor
Andreas Randecker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Festool GmbH
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Festool GmbH
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Filing date
Publication date
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Publication of EP3187305A2 publication Critical patent/EP3187305A2/fr
Publication of EP3187305A3 publication Critical patent/EP3187305A3/fr
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Publication of EP3187305B1 publication Critical patent/EP3187305B1/fr
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Classifications

    • 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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/028—Angle tools
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with cooling provisions

Definitions

  • the invention relates to a grinding plate for a hand-held grinding machine, with a drive holder for non-rotatable attachment to an output of the hand-held grinding machine, according to the preamble of claim 1.
  • Such a sanding pad is in WO 2014/206700 A1 described.
  • Another sanding pad is, for example, in EP 2 070 651 B1 explained.
  • the well-known sanding plate provides for the dust air to be extracted through the through-flow openings of the abrasive, with a transverse flow of fresh air being provided in the plane between the abrasive and the sanding plate, i.e. along the working surface of the sanding plate, to avoid dust pockets between the abrasive and the sanding plate.
  • the operation of the grinding plate is effective in practice, but dust still gets into the vicinity of the grinding plate, which comes back between the abrasion layer and the workpiece during further grinding processing of the workpiece and leads to undesirable grinding effects there.
  • a typical sanding sheet or other abrasive means for example, which has through-flow openings for the dust air inflow openings on the processing side of the sanding disk, can be used on such a sanding plate.
  • abrasives can be used that are also suitable for what are known as conventional sanding discs, i.e. sanding discs without at least one dust air duct within the meaning of the invention, so that existing sanding discs with conventional suction of dust air can continue to be used on the construction site even if a sanding disc according to the invention is used are.
  • a system is also provided according to the technical teaching of claim 14, which comprises an abrasive, in particular a sanding sheet, which has an abrasive layer for abrasive machining of the workpiece and a counter-adhesive layer for detachable attachment to a machining surface of the grinding disk provided with an adhesive layer wherein the abrasive has dust-air throughflow openings penetrating the abrasion layer for dust-laden air that occurs during machining of the workpiece and which flows through the abrasive along a main flow direction towards the grinding plate, in particular into dust-air inflow openings on the machining surface of the grinding plate, so that In the mounted state of the sanding pad and sanding means on the sanding machine, a suction device of the sanding machine flows into the dust air inflow openings through at least one with the dust air inflow openings over it can suck in a dust air discharge opening that is in flow connection with a suction
  • dust air is sucked off from the workpiece surface not only in the main flow direction, but also in a cross flow direction.
  • this dusty air does not reach the outflow opening via the abrasion layer but, for example, directly into one or more of the dusty air inflow openings of the grinding plate.
  • passive inner area of the grinding plate or grinding tool namely where an opening aligned with the drive holder is advantageously provided for operating the drive holder, dusts, in particular very fine dusts are present, they are optimally extracted via the at least one dust air duct.
  • the dust does not have to flow through the dust air throughflow openings of the abrasive, but reaches the at least one dust air outflow opening away from the abrasion layer.
  • the at least one dust air duct or the arrangement of several dust air ducts and / or their dust air inlets are therefore preferably not provided in or on the abrasion layer, so that, apart from the dust air passage openings, it is completely available for abrasive or grinding processing of the workpiece.
  • the grinding tool in particular the grinding plate, can be driven in a rotary grinding movement and / or an eccentric grinding movement and / or a hypercycloid grinding movement using an electric drive motor, a compressed air motor or similar other drive of the grinding machine.
  • the grinding machine preferably has a gear, for example an eccentric gear.
  • the abrasion layer has, for example, a grain or an abrasive fabric.
  • the at least one dust air duct is preferably in direct flow connection with at least one of the dust air inflow openings.
  • the dust air channel provided is expediently in direct flow connection with the at least one through-flow opening away from the abrasion layer.
  • the at least one dust air duct communicates and / or is in flow connection, for example, directly with the suction duct arrangement and / or at least one of the dust air inflow openings and / or with the at least one dust air outflow opening on the machine side of the grinding plate.
  • the at least one dust air duct for the flow of dust air between the abrasive layer of the grinding means and the machine side of the grinding plate runs transversely to the main flow direction.
  • the dust air thus flows transversely to the main flow direction.
  • the at least one dust inlet for the at least one dust air duct is close to the abrasion layer.
  • the dust air inlet for the at least one dust air duct is arranged in an intermediate space between the grinding sheet and the processing surface.
  • the sanding disk body or the sanding disk as a whole does not have any dust air inlet for the at least one dust air duct or other such dust air ducts above the processing surface.
  • all dust air inlets are arranged close to the abrasion layer and not, for example, directly in the sanding pad body.
  • the at least one dust air inlet or all dust air inlets which are arranged between the abrasion layer and the machine side and are in direct flow connection with the at least one outflow opening, in the area of the adhesive layer or the plane of the adhesive layer and / or in the area of the counter-adhesive layer or the plane of the counter-adhesive layer.
  • the sanding plate body for example a foam body or elastic base body of the sanding plate which has the processing surface. So the Flow advantageously in the area of the processing surface or the plane of the processing surface from the at least one dust air inlet in the direction of the at least one outflow opening.
  • the grinding plate has an arrangement of several dust air inlets between the machining side and the machine side on its outer circumference, in particular on its radial outer circumference or its outer circumference extending transversely to the machining surface.
  • the dust air inlets are expediently all arranged in the plane of the adhesive layer or on the adhesive layer.
  • the dust air inlets are expediently arranged at predetermined intervals or angular intervals on the outer circumference of the grinding plate to one another. In particular, the distances are the same. Dust air inlets are thus provided on the outer circumference of the grinding plate in equidistant positions.
  • the number of dust air inlets on the outer circumference is limited, for example that there are only 40-50 dust air inlets at maximum. Significantly fewer dust air inlets can also be provided, for example there are only 20-30 dust air inlets. Less than 20 dust air inlets can also be provided on the outer circumference of the grinding plate, for example only 16-18 dust air inlets.
  • the ratio of flow-tight parts on the outer circumference or inner circumference of a plane in which the at least one dust air duct runs in the grinding plate or abrasive to parts on the outer circumference or inner circumference of this plane that are permeable to air flow due to the at least one dust air duct and the at least one dust air inlet preferably at least 10 to 1, preferably 5 to 1 and more preferably at least 3 to 1 to each other.
  • the abrasive and / or the sanding pad is therefore essentially flow-tight in this plane on the circumference (inner circumference or outer circumference), but has the dust air inlet or an arrangement of several dust air inlets on.
  • the at least one dust inlet or several dust air inlets are closer to the abrasion layer than to the machine side of the grinding plate.
  • the adhesive layer or the counter-adhesive layer form a total of a Velcro connection, for example.
  • the adhesive layer or the counter-adhesive layer is formed by velor or some other textile fabric, while the associated complementary component, that is to say the counter-adhesive layer or the adhesive layer, comprises an arrangement of Velcro hooks. It is of course possible for a detachable adhesive connection to be provided as an adhesive layer and / or counter-adhesive layer.
  • the adhesive layer and / or the counter-adhesive layer can extend to the outer edge of the grinding plate, that is to say over the entire processing surface. However, it is also possible for the processing surface to have recesses where there is no adhesive layer. Of course, the counter-adhesive layer cannot extend as far as the outermost edge area of the abrasive or have recesses.
  • a preferred variant provides that the adhesive layer and / or the counter-adhesive layer cover the working surface of the grinding plate or the fastening surface of the grinding means opposite to it, except for an expediently narrow edge region.
  • the edge of the grinding plate and / or grinding means, where there is no adhesive layer or counter-adhesive layer, can be provided for an air flow, in particular a flow of dusty air.
  • the edge area of the grinding plate or abrasive, where there is no adhesive layer or counter-adhesive layer, is preferably a maximum of 10%, particularly preferably a maximum of 5%, of the working surface of the grinding plate or the opposite fastening surface of the abrasive.
  • the at least one dust air duct runs at least in sections or exclusively in the adhesive layer of the grinding plate and / or the counter-adhesive layer of the abrasive.
  • the at least one dust air duct can for example be designed as a recess in the adhesive layer and / or the counter-adhesive layer of the abrasive.
  • the sanding pad body does not need to have a recess for the dust air duct.
  • a section of the at least one dust air duct which is directly connected to the at least one dust air inlet or has this dust air inlet or which is arranged or running in a common plane with the dust air inlet runs exclusively in the adhesive layer of the grinding plate and / or the counter-adhesive layer of the abrasive.
  • At least one further dust air duct runs in the grinding plate body. It is also possible for the dust air duct to run over a first section in the adhesive layer and / or the counter-adhesive layer and to be arranged in a further or second section in the sanding pad body.
  • the first section is connected to the at least one dust air inlet or opens into it.
  • the at least one dust air inlet expediently forms an entrance area or entrance of the first section of the dust air duct.
  • a recess is provided in the sanding pad body, which is aligned with a recess in the adhesive layer of the sanding pad or coincides with it, so that both recesses interact to form a dust air duct.
  • the dust air duct running in the adhesive layer or counter-adhesive layer can optionally serve to bring external air into the plane of the adhesive layer or counter-adhesive layer in order to avoid the formation of dust pockets there.
  • the at least one dust air duct is formed in the adhesive layer or counter-adhesive layer, for example, in that material of the adhesive layer or counter-adhesive layer is cut out by punching or cutting. It is also possible that, for example by thermal processing, for example a melting process, Portions of the adhesive layer or counter-adhesive layer are compressed or reshaped or thermally deformed or melted, so that the at least one dust air duct or flow duct is formed.
  • the at least one dust air duct is expediently covered by the grinding means when it is attached to the grinding plate. It is possible for the at least one dust air duct to be designed or provided for covering by the abrasive.
  • the dust air duct is designed as a channel that is covered by the abrasive.
  • the at least one dust air duct has, for example, a U-shaped or V-shaped cross-section; other cross-sections, for example W-shaped or T-shaped or the like, are also possible.
  • the abrasive covers the at least one dust air duct transversely to the main flow direction.
  • the abrasive forms a wall or side wall of the dust air duct, while other wall surfaces are provided by the grinding plate.
  • the dust air duct is advantageously cleaned automatically, as it were, by removing the abrasive.
  • the at least one dust air inlet of the at least one dust air duct is expediently provided on an outer circumference of the grinding plate next to the processing surface.
  • the at least one dust air inlet of the at least one dust air duct can, however, also be provided on an inner circumference of an opening aligned with the drive holder on the processing side. It goes without saying that the combination is also possible, ie that one dust air inlet or several dust air inlets are provided both on the outer circumference and on the aforementioned opening for the drive holder or at the drive holder.
  • the at least one dust air inlet on the outer circumference of the grinding plate or the arrangement of such dust air inlets on the outer circumference of the grinding plate has the advantage that dust can be optimally sucked in from the surroundings of the grinding plate and conveyed away from the workpiece.
  • the dust air inlet or the dust air inlets in a central area of the sanding plate improves the dust removal in the central area of the sanding plate, especially against the background that the grinding plate has a relatively low rotational speed or its own rotation speed in eccentric operation in its central area having.
  • dust air inlets and dust air ducts can also be provided on the outer circumference of the abrasive or on the inner circumference of an opening in the abrasive, in particular at equal angular intervals, which is aligned with the drive holder of the grinding plate when it is arranged on the grinding plate.
  • the dust air inlets or dust air channels are expediently in direct flow connection with throughflow openings of the abrasive, in particular with throughflow openings arranged in a ring around the center of the abrasive.
  • a preferred embodiment provides that the grinding plate and / or the grinding means has an arrangement of several dust air inlets arranged on the respective outer circumference, which communicate with dust air ducts or at least one dust air duct which are in flow connection with the at least one outflow opening. It is preferred if a single, but also, for example, two or three dust air inlets communicate with a respective outflow opening.
  • the dust air inlets are expediently arranged at the same angular intervals or equidistantly on the outer circumference of the grinding plate.
  • the same configuration can, however, also be provided in relation to an opening provided with the drive holder on the processing side of the grinding plate or of the grinding means.
  • On the inner circumference of this opening for example a plurality of dust air inlets, in particular arranged at equal angular intervals, can be provided, which are in flow connection with the at least one outflow opening away from the abrasion layer.
  • outflow opening for the dust air towards the grinding machine.
  • At least two or more outflow openings are expediently provided. It is preferred if several outflow openings are arranged in a ring around the drive holder on the machine side of the grinding plate.
  • Reinforcing ribs of the grinding plate are expediently provided between the outflow openings.
  • a suction channel of the suction channel arrangement runs between at least two, preferably three or more inflow openings and an associated outflow opening, which is provided for suctioning off the dusty air through the hand-held grinding machine.
  • the suction channel has an essentially radial course, for example.
  • the suction channel runs, for example, from the outer circumference in the direction of the drive holder.
  • the grinding plate and / or the grinding means have an arrangement of several dust air inlets arranged on the respective outer circumference, these being provided in the adhesive layer of the grinding plate and / or the counter-adhesive layer of the grinding means. It is preferred if such dust air inlets are provided exclusively in the adhesive layer of the grinding plate and / or the counter-adhesive layer of the abrasive.
  • the adhesive layer or the counter-adhesive layer preferably has a cutout.
  • the adhesive layer or counter-adhesive layer as such is preferably not designed as a dust air inlet, ie a certain air permeability of the adhesive layer or counter-adhesive layer is not to be understood as a dust air inlet in this sense. So if, for example, the adhesive layer and / or the counter-adhesive layer as a Velcro layer or fiber layer is designed, their substance-specific, immanent flow permeability expediently does not form a dust air inlet or an arrangement of several dust air inlets.
  • the dust air inlet and / or the dust air duct or a section of the dust air duct communicating with the dust air inlet are advantageously designed as deformations and / or recesses in the material forming the adhesive layer or counter-adhesive layer.
  • the at least one dust air duct expediently also runs at least in sections radially and / or arcuately and / or crescent-shaped from an outer circumference of the grinding plate in the direction of the drive holder or from an inner circumference of an opening aligned with the drive holder in the direction of an outer circumference of the grinding plate.
  • the at least one dust air duct is sickle-shaped.
  • the sanding pad body is elastic and / or consists of a plastic that is impermeable to air and / or impermeable to dust particles.
  • the sanding pad body is made of foam.
  • the sanding pad body comprises or consists of polyurethane foam, in particular an elastomer foam based on polyester and / or an aromatic PUR elastomer foam.
  • the sanding plate body is designed, for example, as a pad or cushion.
  • the sanding disc body itself preferably has one or more dust air inlets on its outer circumference only in the area of the working surface or the plane of the working surface.
  • the sanding plate body preferably does not consist of a fiber material or a knitted fabric. However, it is also possible that the sanding pad body consists of or has such a material.
  • the dust air duct is expediently shaped or designed in a dedicated manner.
  • the dust air channel is therefore advantageously not produced by chance in that a fiber-knitted fabric or a fiber structure is present, with between the fibers Dust air can flow.
  • a variant of the invention provides that the at least one dust air duct is produced by targeted shaping or drilling of the fiber structure.
  • the fiber structure provides only one layer or layer of the grinding plate, while other layers or layers, in particular the adhesive layer or a layer made of a foam, are provided to form the dust air channel or its dust air inlet.
  • the at least one dust air duct has a flow cross section which is not penetrated by fibers and / or is delimited by fibers.
  • the dust air channel does not extend, in particular not like a labyrinth, through a fiber network or a fiber material or a knitted fabric.
  • the adhesive layer or counter-adhesive layer comprises a fiber material, for example a velor, which delimits a side wall or side walls of the at least one dust air duct.
  • this fiber material only runs along the side of the dust air duct and does not extend into the dust air duct, so that the dust air flow through the at least one dust air duct is not obstructed by fibers.
  • the sanding pad body is arranged on a sanding pad carrier or sanding pad upper part which has the drive holder.
  • the carrier or the upper part is, for example, plate-shaped.
  • the carrier or the upper part have reinforcing ribs, for example.
  • the reinforcing ribs have a radial course away from the drive bracket, for example.
  • the carrier or the upper part have, for example, a significantly higher flexural strength and / or a greater modulus of elasticity, for example at least two or three times greater flexural strength or an at least two or three times higher modulus of elasticity than the sanding pad body.
  • the sanding plate body which can also be referred to as a pad or cushion, is glued, welded or otherwise firmly connected to the carrier or the upper part of the sanding plate.
  • the at least one dust air duct has a closed inner circumference, at least when the grinding means is arranged on the grinding plate.
  • the flow cross-section of the dust air channel is therefore limited by an at least substantially closed peripheral wall.
  • the circumferential wall can have several sections, for example wall sections provided by the grinding plate and / or by the grinding means.
  • a base body of the abrasive or abrasive sheet can provide a wall section.
  • the base material of the sanding pad body for example a foam, can provide a wall section.
  • Side walls of the at least one dust air duct can be provided, for example, by the adhesive layer and / or the counter-adhesive layer, for example by a Velcro layer or a layer of velor or both
  • the at least one dust air duct has an essentially constant flow cross section over its length between the dust air inlet and its outlet.
  • the cross section or flow cross section it is also possible for the cross section or flow cross section to narrow or widen from the dust air inlet to the outlet.
  • the cross-section or flow cross-section of the at least one dust air duct runs continuously over its length.
  • the dust air duct has, at least in sections, a flat, for example approximately rectangular, cross section.
  • inflow openings or dust air inlets for the dust air are present on the grinding plate exclusively on the machining side and on an inner circumference or outer circumference angled to the machining side, while only the at least one dust air outlet opening or several dust air outflow openings are arranged on the machine side.
  • no inflow openings or dust air inlets for the dust air or for fresh air are provided on the machine side.
  • a circumferential contour of the grinding plate and / or the grinding means is expediently circular or oval.
  • a circumferential contour of the grinding plate and / or the grinding means is, for example, triangular, rectangular, in particular square, or polygonal in some other way.
  • the grinding plate and the grinding means therefore expediently have a circumferential contour that matches the respective grinding task or the grinding machine.
  • the sanding pad has one in itself EP 2 070 651 known basic concept such that a stream of fresh air or a stream of backflow air flows between the grinding sheet or grinding means and the underside of the grinding plate or the processing side of the grinding plate. This prevents the formation of dust pockets between the abrasive and the sanding pad.
  • the grinding plate has at least one air inlet duct or air inlet channel which has at least one inlet opening away from the processing surface, in particular on an outer circumference of the grinding plate and / or on an inner circumference of an opening on the processing surface that communicates with the drive holder, as well as at least one inlet air -Outflow opening on the processing surface, so that backflow air can flow in through the at least one inflow opening and can flow out of the at least one inlet air outflow opening in order to flow in the direction of the dust air inflow openings to form a backflow air flow between the grinding means and the grinding plate.
  • several inflow openings and / or several supply air outflow openings can be provided which are in flow connection with the at least one supply air duct.
  • the at least one supply air duct expediently extends from an outer circumference of the grinding plate in the direction of a center, preferably into the center of the grinding plate.
  • At least one supply air duct prefferably has an inflow opening arranged in the center of the grinding plate and an inflow opening arranged on the outer circumference of the grinding plate.
  • some of the air ducts only have an inflow opening on the outer circumference of the grinding plate, while other air ducts have an inflow opening on the outer circumference and on the inner circumference or in the center of the grinding plate.
  • the task of the supply air outflow openings of the supply air ducts is primarily to bring fresh air or air with little dust between the abrasive and the underside or processing side of the grinding plate.
  • the following is advantageous in this context: It is expediently provided that the at least one inflow opening of the supply air channel is further away from the processing side than the dust air inlet of the at least one dust air channel. Dust air thus primarily passes through the dust air inlet, while the inflow opening is less contaminated with dust. It can also be said that the at least one inflow opening is arranged closer to the machine side than to the machining side.
  • a grinding machine 10 is used for abrasive machining or for grinding a workpiece W, for example a component or a body of an automobile, a wooden workpiece or the like.
  • the grinding machine 10 has a drive motor 11 which drives a tool shaft 13 directly or via a gear 12, on whose output 14a a tool holder 14 is arranged. With the aid of a drive switch 15, the drive motor 11 can be switched on and off, preferably also adjusted with regard to its speed. A separate switch can also be provided to set the speed.
  • the drive motor 11 and the housing 12 are accommodated in a housing 16 from which a handle 10 protrudes for gripping by an operator.
  • a handle 10 protrudes for gripping by an operator.
  • an elongated handle bar or handle can also be provided, in particular when a grinding machine is designed as a wall and / or ceiling grinding machine.
  • the drive motor 11 is preferably an electric drive motor, with a compressed air motor also being easily possible.
  • the gear 12, which comprises, for example, an eccentric shaft, has, for example, a drive section 18 from which the handle 17 protrudes.
  • an outlet section 21 also protrudes from the drive section 18, through which a dust removal channel 22 runs.
  • a dust removal connection 23 is provided for connecting, for example, a suction line 24, in particular a suction pipe.
  • the suction line 24 leads, for example, to a vacuum cleaner not shown in the drawing.
  • the suction line 24 expediently forms part of a suction device 25 for suctioning dust from a surface of the workpiece W.
  • a dust collection container for example a sack or bag, can of course also be provided on the dust removal connection 23.
  • a grinding tool 30 can be driven, for example, in a rotary and / or oscillating and / or hypercycloid grinding movement.
  • a machine side 31 of the grinding tool 30 is attached to the grinding machine 10 or faces the grinding machine 10, while a machining side 32 is assigned to the workpiece W.
  • the grinding tool 30 has on the machine side 31 a drive holder 33 for the tool holder 14 on the Tool shaft 13 on.
  • the drive holder can, for example, have a threaded pin or a mounting pin that can be connected to a corresponding tool holder of the grinding machine.
  • the grinding machine 10 itself has a pin or fastening projection as the tool holder 14, which engages in a corresponding holder 34 of the drive holder 33.
  • the drive holder 33 comprises bayonet contours or the like.
  • the very specific design of the drive holder 90 is not important. It only ensures that the grinding tool 30 can be connected to the tool shaft 13 in a rotationally fixed manner, so that the driving force of the drive motor 11 can be transmitted to the grinding tool 30.
  • the grinding tool 30 comprises a grinding plate 40 to which an abrasive 80 is detachably attached.
  • a machine side 41 of the sanding plate 40 is provided with the drive holder 33.
  • the grinding plate 40 has a machining surface 42 which, for example, has a circular circumferential contour.
  • a sanding plate with a structure similar to that of sanding plate 40 to have a triangular or rectangular outer circumferential contour, for example.
  • the sanding plate 40 has an adhesive layer 65, for example with Velcro hooks, to which the abrasive 80 with its matching counter-adhesive layer 82 can be releasably attached.
  • the counter-adhesive layer 82 is made of a textile material, in particular velor, for example.
  • the counter-adhesive layer 82 is arranged, for example, on a sheet-like base body 92, for example made of paper or a textile fabric. However, it would also be possible for the counter-adhesive layer 82 to directly form the base body for an abrasion layer 81.
  • the abrasive layer 81 like other abrasive layers that can be used or that can be used according to the invention, has, for example, a grain or an abrasive fabric.
  • the abrasion layer 81 and the counter-adhesive layer 82 are provided on opposite sides of the base body 91.
  • the grinding means 80 which is designed, for example, as a grinding sheet 90, has a multiplicity of through-flow openings 84-88 for dust air S, with which dust that arises when the workpiece W is sanded is extracted or that arises when the workpiece W is sanded.
  • the throughflow openings 84-88 are arranged, for example, in concentric circles.
  • the throughflow openings 84 and 88 are provided, for example, along a circular line that is radially outer with respect to the drive holder, and the throughflow openings 87 are provided along a circular line that is radially inner with respect to the drive holder. Between these circular lines there are two circular lines with further radii, along which the throughflow openings 85, 86 are arranged.
  • a row arrangement of throughflow openings 84, 85, 86, 87 is arranged along a radial line.
  • the distances between the throughflow openings 84-87 are expediently approximately the same.
  • the throughflow openings 84-88 are expediently distributed essentially uniformly over the surface of the abrasion layer 81.
  • a throughflow opening 84 is arranged between each two throughflow openings 88.
  • the throughflow openings 84 and / or 86 have a larger flow cross section or diameter than the throughflow openings 85, 87, 88.
  • the throughflow openings 84-88 are preferably circular, but could also have any other cross-sectional geometry, for example triangular or otherwise polygonal.
  • the circular lines with the throughflow openings 84 - 88 extend around a central opening 89 which is aligned with the drive holder 33 of the grinding tool 30.
  • the drive holder 33 is thus also accessible from the processing surface 42.
  • the central opening 89 is also suitable for sucking off dusty air S, which will become clear later.
  • inflow openings 44-48 are provided to match the throughflow openings 84-88, through which the dust air S can flow into the sanding plate 40, namely into a suction channel arrangement 78 of the sanding plate 40.
  • a hole pattern of the throughflow openings 44-48 and the throughflow openings 84-88 is preferably identical, so that they are aligned with one another.
  • the inflow openings 44 are arranged along a radially outer circular line around the drive holder 33 or the center of the grinding plate 40. They correspond to the throughflow openings 84 and are assigned to them.
  • An inflow opening 44 is arranged between inflow openings 48, which lie on the same circular lines as the inflow openings 44, but have a smaller cross section than the inflow openings 44.
  • the inflow openings 45, 46, 47, matching the throughflow openings 85, 86, 87, continue to lie on concentric circular lines.
  • the suction channel arrangement 78 comprises suction channels 75 which each open into an outflow opening 50 on the machine side 41 of the grinding plate 40.
  • the suction channels 75 each include a main channel 76 which communicates with the inflow openings 44, 45, 46, 47.
  • Branch channels 77 which are flow-connected to the inflow openings 48, branch off from the main channel 76. Dust air S can thus flow from the inflow openings 44-48 to an associated outflow opening 50 via a respective suction channel 75.
  • the outflow openings 50 are annularly arranged around the drive holder 33, expediently at regular intervals.
  • the outflow openings 50 are arranged on the machine side 31, 41.
  • the outflow openings 50 are located in a suction area 26 of the suction device 25 of the grinding machine 50, so that the dust air S from the workpiece W passes through the flow openings 84-88, the inflow openings 44-48 and the suction channel arrangement 78 to the outflow openings 50 and flow through them further into the suction line 24 can.
  • an effective suction of dust from the dust arising below the abrasion layer 81 is possible.
  • the sanding plate 40 In the center of the sanding plate 40 there is an opening 49 through which the drive holder 33 is accessible.
  • the opening 49 is aligned or coincident with the opening 89 when the abrasive 80 is attached to the sanding plate 40.
  • the inflow openings 44 - 48 and preferably completely or essentially the suction channel arrangement 78 are expediently formed in a sanding plate body 57.
  • the sanding pad body 57 comprises, for example, a foam body 58.
  • the sanding pad body 57 is elastically flexible and in any case more flexible than a sanding pad carrier 51, which could also be referred to as the sanding pad upper part on which the outflow openings 50 are provided.
  • the sanding plate carrier 51 stabilizes the sanding plate 40, so to speak.
  • the carrier 51 has a plate section 52, which, however, has a smaller diameter or a smaller cross-sectional area than the machining surface 42.
  • an outer circumferential surface 59 of the grinding plate body 57 providing or forming the outer circumferential surface 43 projects radially outward in front of an edge or outer circumference 54 of the plate section 52 before.
  • a relatively soft edge region of the sanding plate body 57 that is not stiffened by the carrier 51 is provided, which is known per se.
  • the sanding plate carrier 51 has an elevation 55 which projects upwards in front of the plate section 52 and in which the drive holder 33 is provided.
  • an insert part 56 is arranged, in particular embedded or encapsulated, which has the drive holder 33.
  • the insert 56 consists, for example, of metal, while the sanding plate carrier 51 can consist of a plastic material.
  • the sanding plate carrier 51 is preferably reinforced by ribs 53 which extend radially outward from the elevation 55 in the direction of the outer circumference 54 of the plate section 52. Expediently, an outflow opening 50 is arranged between two ribs 53 in each case.
  • the section of the grinding plate 50 having the elevation 55 preferably protrudes into the suction area 26 of the grinding machine 10, so that the outflow openings 50 are arranged there and the dust air S can be effectively sucked off by the grinding plate 40.
  • the dust air S flows into the through-flow openings 84-88 along a main flow direction H.
  • the grinding plate 40 has an arrangement 60 of dust air inlets 62 in the area of the outer circumferential surface 43 close to the abrasion layer 81, namely in an intermediate space between the grinding means 80 and the processing surface 42.
  • the dust air inlets 62 are therefore provided radially outside with respect to the center of the grinding plate 40 or with respect to the drive holder 33, so that dust air S is sucked in from the vicinity of the grinding plate 40 in the direction of the grinding plate 40, expediently in a cross flow direction Q transverse to the main flow direction H.
  • the dust air inlets 62 are provided on dust air channels 61 which are in direct flow connection with the inflow openings 88 provided radially on the outside of the grinding plate 40.
  • the dust air S can thus flow from the outside in the direction of the grinding tool 30 or the grinding plate 40 and does not get between the workpiece W and the abrasion layer 81, but is sucked in between the abrasion layer 81 and the machine side 31 of the grinding tool 30.
  • the dust air ducts 61 have, for example, a sickle-shaped or curved course. It goes without saying that other courses are also possible, for example, an approximately straight or radial course of a schematically shown in Figure 6 the dust air duct 261.
  • the curvature of the dust air ducts 61 can be provided counter to a typical direction of rotation or in the direction of a typical direction of rotation of the grinding tool 30.
  • Further dust air inlets 64 are provided on the inner circumference of opening 49 and communicate via dust air channels 63 with inflow openings 47a of inflow openings 47. Between two inflow openings 47a, to which a dust air channel 63 leads, an inflow opening 47b is provided, to which no dust air channel leads. This makes it possible, for example, for the dust air ducts 63 to have a relatively large cross section, similar to the dust air ducts 61, which promotes effective dust extraction.
  • the dust air channels 61, 63 are preferably formed in that the adhesive layer 65 has corresponding cutouts. However, recesses, in particular grooves, can also be provided directly on the foam body 58 or sanding plate body 57 to form the dust air ducts 61, 63.
  • the adhesive layer 65 is formed by a punched body or a body that is produced by cutting out.
  • the adhesive layer 65 is glued, for example, to the sanding plate body 57.
  • the sanding plate body 57 it is also possible for the sanding plate body 57 to be injection-molded onto an adhesive layer layer 67 having the adhesive layer 65 or to be molded in some other way.
  • the adhesive layer 67 for example a Velcro layer, is placed in an injection mold in which the sanding plate body 57 or the foam body 58 is then injected onto the adhesive layer 67.
  • the adhesive layer 65 does not extend as far as the radial outer circumference 68 of the sanding plate 40.
  • An edge 66 of the sanding plate body 57 without an adhesive layer 65 is provided there.
  • the edge 66 is relatively narrow. Recesses for the dust air ducts 61 can be formed on the edge 66.
  • a rear ventilation arrangement 70 which counteracts the formation of dust nests between the processing surface 42 of the grinding plate 40 and the grinding means 80, comprises, for example, inflow openings 71 which are flow-connected to inflow air outflow openings 72 via air inlet ducts 73, 73b.
  • the supply air ducts 73 furthermore have an inflow opening 74 on the inner circumference of the opening 49, so that, so to speak, supply air F can flow into the supply air ducts 73 from radially outside and radially inside.
  • the supply air ducts 73b only have the inflow opening in 71.
  • the inflow openings in 71, 73 are closer to the machine side 41, 31 of the grinding tool 30 or of the grinding plate 40 than the dust air inlets 62, 64. Thus, less dust-laden supply air F reaches the supply air ducts 73, 73b.
  • the supply air F flows out of the supply air ducts 73, 73b via supply air outflow openings 72 into the space between the sanding plate 40 and the abrasive 80, that is, into the connecting plane between the counter-adhesive layer 82 and the adhesive layer 65. 48 again suctioned off, so that any dust that may collect between the adhesive layer 65 and the counter-adhesive layer 82 is effectively removed.
  • the sanding plate 140 has essentially the same basic structure as the sanding plate 40, so that the same reference numerals are used in this respect. For example, the inflow openings 44-48 already explained are present.
  • the grinding means 180 corresponds essentially to the grinding means 80, that is to say it also has the components already explained, for which the same reference symbols are used.
  • the arrangement of the dust air inlets and the dust air ducts for the suction opening of dust air S from the vicinity of the grinding plate 140 or the grinding means 180 is made differently, namely in such a way that the grinding means 180 dust air channels 161, which are flow-connected to the flow-through openings 88 directly and on the side of the counter-adhesive layer 182. No depressions or dust air channels are provided on the grinding plate 140 in the area of the dust air channels 161. However, this would be entirely possible, similar to the grinding plate 40.
  • the dust air ducts 161 and 61 could therefore be provided interacting, which provides a correspondingly larger flow cross section for the dust air S.
  • the dust air channels 161 do not run on the abrasion layer 81 of the abrasive 180, but in the area of the counter-adhesive layer 182.
  • the counter-adhesive layer 182 has, for example, recesses or grooves that have dust air inlets 162 on the outer edge area 83 of the abrasive 180. Dust air S can flow through these dust air inlets 162 in a manner similar to that through dust air inlets 62 in the direction of outflow openings 50 away from abrasion layer 81.
  • the dust air channels 63 could be provided on the grinding means 180, which is preferably designed as a grinding sheet 190.
  • the dust air channels 63 are formed so that the grinding means 180 does not have to have any dust air channels in the area of the opening 89.
  • a dust air inlet and / or a dust air duct can also be arranged outside the adhesive layer of a sanding plate.
  • a dust air inlet 362 is arranged on the outer circumferential surface 59 of the grinding plate body 57.
  • the dust air inlet 362 leads to a dust air duct 361, which runs through the sanding plate body 57 and opens directly into the suction duct 75.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Claims (15)

  1. Plateau de ponçage (40) pour une ponceuse (10) à main, avec un dispositif de retenue d'entraînement (33) pour la fixation solidaire en rotation sur une sortie (14a) de la ponceuse (10) à main, de sorte que le plateau de ponçage (40) peut être entraîné par la ponceuse (10) dans un mouvement de ponçage adapté à un usinage par ponçage d'une pièce (W), en particulier rotatif et/ou excentrique, dans lequel un corps de plateau de ponçage (57) du plateau de ponçage (40) présente une surface d'usinage (42) pourvue d'une couche adhésive (65) pour la fixation libérable d'un abrasif (80) pourvu d'une couche adhésive complémentaire (82), conçu en particulier en tant que feuille abrasive (90) et présentant une couche d'abrasion (81) pour un usinage abrasif de la pièce (W), dans lequel des ouvertures d'afflux d'air poussiéreux (44-48) pour l'air poussiéreux (S) se produisant lors de l'usinage de la pièce (W), chargé de poussière et affluant par des ouvertures de passage d'air poussiéreux (84-88) de l'abrasif (80 ; 180) le long d'une direction d'écoulement principale (H) sont disposées sur la surface d'usinage (42), qui sont reliées à au moins une ouverture d'échappement (50) d'air poussiéreux sur un côté machine (31) du plateau de ponçage (40) opposé à la surface d'usinage (42) par l'intermédiaire d'un ensemble canal d'aspiration (78), de sorte que dans l'état monté sur la ponceuse (10) du plateau de ponçage (40), un dispositif d'aspiration (25) de la ponceuse (10) peut aspirer l'air poussiéreux (S) affluant dans les ouvertures d'afflux d'air poussiéreux (44-48) par l'au moins une ouverture d'échappement (50) d'air poussiéreux, dans lequel le plateau de ponçage (40) présente au moins un canal d'air poussiéreux (61, 63), qui pour l'évacuation de poussière de l'environnement de la couche d'abrasion (81) présente une entrée d'air poussiéreux (62, 64) entre la couche d'abrasion (81) de l'abrasif (80) et le côté machine (31) du plateau de ponçage (40) et est en liaison d'écoulement directe avec l'au moins une ouverture d'échappement (50) à l'écart de la couche d'abrasion (81), caractérisé en ce qu'il présente au moins un canal d'air frais (73), qui présente au moins une ouverture d'admission (71) à l'écart de la surface d'usinage (42), en particulier sur une périphérie extérieure (68) du plateau de ponçage (40) et/ou sur une périphérie intérieure d'une ouverture (49) communiquant avec le dispositif de retenue d'entraînement (33) sur la surface d'usinage (42), ainsi qu'au moins une ouverture d'échappement d'air frais (72) sur la surface d'usinage (42), de sorte que l'air d'écoulement arrière peut affluer par l'au moins une ouverture d'admission (71) et s'échapper de l'au moins une ouverture d'échappement d'air frais (72), afin de s'écouler en direction des ouvertures d'afflux d'air poussiéreux (44-48) pour la formation d'un courant d'air d'écoulement arrière entre l'abrasif (80) et le plateau de ponçage (40).
  2. Plateau de ponçage (40) selon la revendication 1, caractérisé en ce que l'entrée d'air poussiéreux (62, 64) pour l'au moins un canal d'air poussiéreux (61, 63) est disposée dans un espace intermédiaire entre l'abrasif, en particulier la feuille abrasive (90), et la surface d'usinage (42) et/ou que le plateau de ponçage (40) ou le corps de plateau de ponçage (57) ne présente pas d'entrée d'air poussiéreux (62, 64) disposée au-dessus de la surface d'usinage (42) pour l'au moins un canal d'air poussiéreux (61, 63) et/ou aucune entrée d'air poussiéreux (62, 64) n'est disposée sur le corps de plateau de ponçage (57) du plateau de ponçage (40) conçu en particulier en tant que corps en mousse ou corps élastique et/ou l'au moins une entrée d'air poussiéreux (62, 64) ou toutes les entrées d'air poussiéreux, qui sont disposées entre la couche d'abrasion (81) et le côté machine (31) et sont en liaison d'écoulement directe avec l'au moins une ouverture d'échappement (50), s'étendent dans la zone de la couche adhésive ou du plan de la couche adhésive (65).
  3. Plateau de ponçage (40) selon la revendication 1 ou 2, caractérisé en ce qu'il présente un ensemble de plusieurs entrées d'air poussiéreux (62, 64) entre le côté d'usinage et le côté machine sur sa périphérie extérieure, dans lequel les entrées d'air poussiéreux (62, 64) sont disposées dans des distances ou distances angulaires prédéfinies, en particulier identiques, les unes par rapport aux autres et/ou présentent un nombre prédéfini, en particulier au maximum 50 ou 40 entrées d'air poussiéreux (62, 64), de préférence au maximum 20-30 entrées d'air poussiéreux (62, 64) et plus préférablement moins de 30 entrées d'air poussiéreux (62, 64) sont prévues.
  4. Plateau de ponçage (40) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'au moins un canal d'air poussiéreux (61, 63) s'étend au moins sur certaines parties ou exclusivement dans la couche adhésive (65) et/ou est conçu en tant qu'évidement dans la couche adhésive (65) et/ou la couche adhésive complémentaire (82) et/ou que la couche adhésive (65) et/ou la couche adhésive complémentaire (82) ne s'étendent pas jusqu'à une zone de bord extérieur (66, 83) de la surface d'usinage (42) ou de l'abrasif (80).
  5. Plateau de ponçage (40) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'au moins un canal d'air poussiéreux (61, 63), en particulier transversalement par rapport à la direction d'écoulement principale (H), est recouvert par l'abrasif (80), lorsque l'abrasif (80) est monté sur le plateau de ponçage (40), et/ou que l'au moins un canal d'air poussiéreux (61, 63) est conçu ou prévu pour être recouvert par l'abrasif (80) et/ou présente une section transversale en forme de U ou en forme de V et/ou est conçu en tant que rigole.
  6. Plateau de ponçage (40) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'au moins un canal d'air poussiéreux (61, 63) pour être traversé avec l'air poussiéreux (S) s'étend entre la couche d'abrasion (81) de l'abrasif (80) et le côté machine (31) du plateau de ponçage (40) transversalement par rapport à la direction d'écoulement principale (H) et/ou l'au moins un canal d'air poussiéreux (61, 63) est en liaison d'écoulement directe avec au moins une des ouvertures d'afflux d'air poussiéreux (44-48) et/ou avec l'ensemble canal d'aspiration (78).
  7. Plateau de ponçage (40) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'entrée d'air poussiéreux (62, 64) de l'au moins un canal d'air poussiéreux (61, 63) est prévue sur une périphérie extérieure (68) du plateau de ponçage (40) en particulier radiale ou s'étendant transversalement par rapport à la surface d'usinage (42) à côté de la surface d'usinage (42) et/ou dans le plan de la surface d'usinage (42) et/ou est prévue sur une périphérie intérieure d'une ouverture (49) en affleurement avec le dispositif de retenue d'entraînement (33) sur le côté d'usinage.
  8. Plateau de ponçage (40) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il présente un ensemble de plusieurs entrées d'air poussiéreux disposées, en particulier dans des distances angulaires identiques, sur sa périphérie extérieure (68) et/ou sur la périphérie intérieure d'une ouverture (49) communiquant avec le dispositif de retenue d'entraînement (33) pour des canaux d'air poussiéreux (61, 63), qui sont en liaison d'écoulement avec l'au moins une ouverture d'échappement (50) et/ou avec des ouvertures d'afflux d'air poussiéreux (44-48) disposées de manière annulaire autour de sa zone centrale.
  9. Plateau de ponçage (40) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'au moins un canal d'air poussiéreux (61, 63) s'étend au moins sur certaines parties radialement et/ou en forme d'arc et/ou en forme de croissant à partir d'une périphérie extérieure (68) du plateau de ponçage (40) en direction du dispositif de retenue d'entraînement (33) ou à partir d'une périphérie intérieure d'une ouverture (49) en affleurement avec le dispositif de retenue d'entraînement (33) en direction d'une périphérie extérieure (68) du plateau de ponçage (40).
  10. Plateau de ponçage (40) selon l'une quelconque des revendications précédentes, caractérisé en ce que le corps de plateau de ponçage (57) est élastique et/ou est constitué d'une matière plastique étanche à l'air, en particulier d'une mousse, et/ou n'est pas constitué d'un tricot ou matériau fibreux et/ou présente un corps en mousse (58) et/ou est disposé sur un support (51) en forme de plateau, lequel présente le dispositif de retenue d'entraînement (33).
  11. Plateau de ponçage (40) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'au moins un canal d'air poussiéreux (61, 63) possède une section transversale d'écoulement, qui n'est pas traversée par des fibres et/ou est délimitée par des fibres et/ou n'est pas prévue dans un tricot ou corps en mousse ou matériau fibreux et/ou l'au moins un canal d'air poussiéreux (61, 63) présente au moins lorsque l'abrasif (80) est disposé sur le plateau de ponçage (40) une périphérie intérieure fermée et/ou que l'au moins un canal d'air poussiéreux (61, 63) présente sur sa longueur entre l'entrée d'air poussiéreux (62, 64) et sa sortie une section transversale d'écoulement s'étendant de manière continue et/ou sensiblement constante et/ou au moins sur certaines parties une section transversale plate, en particulier sensiblement rectangulaire.
  12. Plateau de ponçage (40) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'au moins un canal d'air frais (73) s'étend à partir d'une périphérie extérieure (68) du plateau de ponçage (40) en direction d'un centre, en particulier jusqu'à un centre, du plateau de ponçage (40) et/ou que l'au moins un canal d'air frais (73) présente une ouverture d'admission (71) sur la périphérie extérieure (68) et au centre du plateau de ponçage (40) et/ou que l'au moins une ouverture d'admission (71) est davantage éloignée de la couche d'abrasion (81) que l'entrée d'air poussiéreux (62, 64) de l'au moins un canal d'air poussiéreux (61, 63).
  13. Outil de ponçage (30) pour une utilisation sur une ponceuse (10) à main, caractérisé en ce qu'il comprend un plateau de ponçage (40) selon l'une quelconque des revendications précédentes et l'abrasif (80), lequel présente des ouvertures de passage d'air poussiéreux (84-88) communiquant avec les ouvertures d'afflux d'air poussiéreux (44-48) et la couche adhésive complémentaire (82).
  14. Système comprenant un plateau de ponçage (40) pour une utilisation sur une ponceuse (10) à main, dans lequel le plateau de ponçage (40) peut être fixé de manière solidaire en rotation sur une sortie (14a) de la ponceuse (10) à main à l'aide d'un dispositif de retenue d'entraînement (33), de sorte que le plateau de ponçage (40) peut être entraîné par la ponceuse (10) dans un mouvement de ponçage adapté à un usinage par ponçage d'une pièce (W), en particulier rotatif et/ou excentrique, ainsi qu'un abrasif (180), en particulier une feuille abrasive (90), pour le plateau de ponçage (40), dans lequel l'abrasif (180) présente une couche d'abrasion (81) pour un usinage abrasif de la pièce (W) et une couche adhésive complémentaire (82) pour la fixation libérable sur une surface d'usinage (42) du plateau de ponçage (40) pourvue d'une couche adhésive (65), dans lequel l'abrasif (180) présente des ouvertures de passage d'air poussiéreux (84-88) traversant la couche d'abrasion (81) pour l'air poussiéreux (S) se produisant lors de l'usinage de la pièce (W), chargé de poussière et traversant l'abrasif (180) le long d'une direction d'écoulement principale (H) en direction du plateau de ponçage (40), en particulier à l'intérieur d'ouvertures d'afflux d'air poussiéreux (44-48) sur la surface d'usinage (42) du plateau de ponçage (40), de sorte que dans l'état monté sur la ponceuse (10) du plateau de ponçage (40) et de l'abrasif (180), un dispositif d'aspiration (25) de la ponceuse (10) peut aspirer l'air poussiéreux (S) affluant dans les ouvertures d'afflux d'air poussiéreux (44-48) par au moins une ouverture d'échappement (50) d'air poussiéreux en liaison d'écoulement avec les ouvertures d'afflux d'air poussiéreux (44-48) par l'intermédiaire d'un ensemble canal d'aspiration (78) sur un côté machine (31) du plateau de ponçage (40) opposé à la surface d'usinage (42), caractérisé en ce que l'abrasif (180) présente au moins un canal d'air poussiéreux (161), qui pour l'évacuation de poussière de l'environnement de la couche d'abrasion (81) présente une entrée d'air poussiéreux (162) latéralement à côté de la couche d'abrasion (81), et que le plateau de ponçage (40) présente au moins un canal d'air frais (73), qui présente au moins une ouverture d'admission (71) à l'écart de la surface d'usinage (42), en particulier sur une périphérie extérieure (68) du plateau de ponçage (40) et/ou sur une périphérie intérieure d'une ouverture (49) communiquant avec le dispositif de retenue d'entraînement (33) sur la surface d'usinage (42), ainsi qu'au moins une ouverture d'échappement d'air frais (72) sur la surface d'usinage (42), de sorte que l'air d'écoulement arrière peut affluer par l'au moins une ouverture d'admission (71) et s'échapper de l'au moins une ouverture d'échappement d'air frais (72), afin de s'écouler en direction des ouvertures d'afflux d'air poussiéreux (44-48) pour la formation d'un courant d'air d'écoulement arrière entre l'abrasif (180) et le plateau de ponçage (40).
  15. Système selon la revendication 14, caractérisé en ce que l'au moins un canal d'air poussiéreux (61, 63) de l'abrasif (180) s'étend en particulier exclusivement dans la couche adhésive complémentaire (82) et/ou est en liaison d'écoulement directe avec l'au moins une ouverture de passage (84-88) à l'écart de la couche d'abrasion (81) et/ou est conçu en tant qu'évidement dans la couche adhésive complémentaire (82) et/ou que l'abrasif (180) présente un ensemble de plusieurs entrées d'air poussiéreux (162) pour des canaux d'air poussiéreux (161) disposées, en particulier dans des distances angulaires identiques, sur sa périphérie extérieure et/ou sur sa périphérie intérieure des entrées d'air poussiéreux (162) pour des canaux d'air poussiéreux (161) disposées sur la périphérie intérieure d'une ouverture (89) communiquant avec le dispositif de retenue d'entraînement, qui sont en liaison d'écoulement avec des ouvertures de passage (84-88), en particulier disposées de manière annulaire autour d'un centre de l'abrasif (180).
EP16206563.5A 2016-01-04 2016-12-23 Plateau de meule et abrasif Active EP3187305B1 (fr)

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EP3542961A1 (fr) * 2018-03-23 2019-09-25 HILTI Aktiengesellschaft Support pour produit abrasif
DE102018111836A1 (de) * 2018-05-16 2019-11-21 Festool Gmbh Mobile Werkzeugmaschine zur Bearbeitung einer Oberfläche
DE102020105572A1 (de) 2020-03-02 2021-09-02 Festool Gmbh Schleifteller mit einem Dichtungselement und einer Rippenstruktur sowie Schleifmaschine
CN112571285A (zh) * 2021-01-07 2021-03-30 南京客络超商贸有限公司 一种可清除磨屑的内孔磨削设备
DE102021209532A1 (de) 2021-08-31 2023-03-02 Tts Microcell Gmbh Schleifteller für ein Schleifgerät und Schleifsystem

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DE8704856U1 (de) * 1987-04-01 1987-08-13 Ihmels, Hartmut, 2905 Edewecht Schleifteller
JPH07237131A (ja) * 1994-03-01 1995-09-12 Hiroaki Yasuda 研磨材装着用パッド
DE9414167U1 (de) * 1994-09-01 1996-01-11 Robert Bosch Gmbh, 70469 Stuttgart Schleifteller
DE29613570U1 (de) * 1996-08-06 1996-09-19 Wiemann, Martin, 65366 Geisenheim Schleif- oder Polierteller, insbesondere für Exzentermaschinen
ATE470537T1 (de) 2007-12-11 2010-06-15 Festool Gmbh Schleifteller und schleifblatt
CA2710999A1 (fr) * 2007-12-31 2009-07-16 Mervyn Chung-Fat Tampon d'interface destine a etre utilise entre un article abrasif et un outil de support
DE202008001473U1 (de) * 2008-02-01 2008-06-26 Storm Pneumtic Tool Co., Ltd., Dali City Schleifscheibe
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DE102013212598A1 (de) * 2013-06-28 2014-12-31 Robert Bosch Gmbh Haltevorrichtung für ein Schleifmittel

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