EP1068048A1 - Outil abrasif a lamelles - Google Patents

Outil abrasif a lamelles

Info

Publication number
EP1068048A1
EP1068048A1 EP99916867A EP99916867A EP1068048A1 EP 1068048 A1 EP1068048 A1 EP 1068048A1 EP 99916867 A EP99916867 A EP 99916867A EP 99916867 A EP99916867 A EP 99916867A EP 1068048 A1 EP1068048 A1 EP 1068048A1
Authority
EP
European Patent Office
Prior art keywords
grinding tool
flap
flap grinding
tool according
carrier body
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
Application number
EP99916867A
Other languages
German (de)
English (en)
Other versions
EP1068048B1 (fr
Inventor
Marion Wendt-Ginsberg
Frank Wendt
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.)
DIPL -ING GUENTER WENDT GmbH
Original Assignee
M&F Entwicklungs und Patentverwertungs GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by M&F Entwicklungs und Patentverwertungs GmbH filed Critical M&F Entwicklungs und Patentverwertungs GmbH
Publication of EP1068048A1 publication Critical patent/EP1068048A1/fr
Application granted granted Critical
Publication of EP1068048B1 publication Critical patent/EP1068048B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
    • 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
    • B24D13/04—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising a plurality of flaps or strips arranged around the axis

Definitions

  • the invention relates to a flap grinding tool, which is designed symmetrically around an axis of rotation, with a plurality of grinding flaps arranged on the circumference and / or end faces, a carrier body on which the grinding flaps are fastened, and a device for connecting the flap grinding tool to a drive device, wherein the carrier body has at least one rotationally symmetrical lateral surface on which the grinding flaps are at least partially fastened, and a quick-action clamping device for connecting a flap grinding tool to a
  • Such flap grinding tools are preferably used for surface processing, especially in mold or body construction. Special advantages are the elastic adaptation of the grinding flaps to the workpiece contour and the cool grinding. The lamella arrangement also results in a very long service life for these tools.
  • Sanding belts with a lamellar formation are known per se, for example from US 938,223 AI. From DE 8523363 Ul it is known to tension such an abrasive belt onto a hollow cylinder with the dimensions of a steel band coil in order to produce printing marks that occur when the steel band is wound on pressure rollers of the winding machine 2 eliminate them before they can impair the surface quality of the steel strip.
  • Lamellar grinding tools are known in the prior art, in particular for machining profiled workpiece surfaces without damaging the surface due to scoring and the like. Especially in tool and mold making, such flap grinding tools with radial trimmings made of grinding flaps have been widely used for fine grinding and polishing work on larger radii.
  • Such sander for peripheral grinding usually consist of a shaft with which the grinding tool e.g. can be clamped in a chuck that is profiled and glued or pressed to a rigid core of the sander.
  • the slats are fixed radially to the core by gluing in grooves or tangentially in an adhesive or potting layer.
  • Such sander are also commercially available, an embodiment for screw fastening on a shaft is also described in DE-GM 1986971.
  • AI grinding sleeves for circumferential grinding are known, which can be clamped onto a reusable grinding belt body to improve the economy when using such sander.
  • Sanding belt body the shaft for connection to a drive machine and a rubber body arranged between cones, which radially fixes the grinding sleeve by tensioning the cones.
  • abrasive belt body is, for example, in the tool catalog 93/94 from Hch. Perschmann GmbH, Braunschweig.
  • flap discs are known for use on angle grinding machines, in which the trimming of grinding flaps is arranged on the face of a disc.
  • Such discs are commercially available, for example, under the name Pferd Polifan and in the tool catalog 93/94 from Hch. Perschmann GmbH, Braunschweig.
  • These discs consist of a carrier made of glass fiber fabric mats, which are equipped with grinding lamellae axially on the front side and have a usual mounting hole in the middle for attachment to the output spindle of an angle grinder. Glass fiber fabric mats are used so that the plate with the slats wears evenly when the tool is turned on and allows the slats to be used up completely.
  • a grinding flap disc for use with angle grinders in which a number of grinding flaps is arranged on a disc-shaped support on both end faces, on the one hand to allow the machining of walls of relatively narrow grooves and on the other hand to increase the service life of the disc Maintain maneuverability.
  • the useful areas each consisting of shingle-like grinding lamellae, are mutually oriented.
  • US 5,722,881 A discloses a flap grinding tool with a stock of grinding flaps on the radial circumference.
  • the grinding flaps are directly on the radial with the help of an epoxy resin 4
  • Glued outside of a disc-shaped carrier body wherein the disc-shaped carrier body consists of an inner sheet metal disc and an outer glass fiber disc.
  • the steel disc is provided in the middle with a weld-on nut that protrudes beyond the lateral surfaces formed by the outside of the grinding flaps.
  • the carrier body consists of a metal pot which, in addition to a central disc-shaped part with a flat offset, has a flanged radially outer edge to which the grinding flaps are glued by means of epoxy resin.
  • This embodiment is intended for mounting on a protruding stub shaft, e.g. for use on a stationary grinding machine.
  • the invention is therefore based on the object of providing lamellar grinding tools and corresponding aids in which a more economical use, which is improved in terms of waste generation and a wider range of applications, is possible without reducing operational safety. 5 Description of the invention
  • a flap grinding tool of the type mentioned at the outset in which the carrier body comprises at least one central element designed as a disk, which extends essentially radially to the axis of rotation and the device for connecting the flap grinding tool to a drive device has at least one contact surface formed by the disk for connecting the flap grinding tool to a drive device, and the carrier body further comprises a carrier ring, on the radially outer outside of which one of the lateral surfaces is formed approximately parallel to the axis of rotation or at least less than 75 ° to the axis of rotation.
  • the inventive construction can simplify the production of such a tool without functional disadvantages and also reduce the amount of waste due to consumption.
  • problems regarding the dimensional accuracy of such a tool can be avoided, which exist due to the springback of the flanged edge when deep-drawing conventional carrier bodies and cannot be avoided because of the anisotropy of the semi-finished product due to the rolling of the raw material.
  • the multi-part structure of the carrier body makes it particularly easy to position the grinding flaps in a sufficiently precise orientation. After consumption, the parts of the flap grinding tool according to the invention can be separated and disposed of separately or at least partially returned to the production cycle.
  • the disk is cranked so far in the area of the contact surface that the contact surface is arranged axially outside of a rotating body circumscribed by the outer edges of the grinding flaps.
  • Flap grinding tool characterized in that the carrier body comprises a plastic, preferably a fiber-reinforced plastic, and / or in that the carrier body is made of aluminum or steel. It is advantageous if the disk is made of a plastic, preferably a fiber-reinforced plastic, or if the disk is made of aluminum or steel.
  • the carrier ring is made of a plastic, preferably a fiber-reinforced plastic, a hard rubber or a hard paper, or if the carrier ring is made of aluminum or steel.
  • the carrier ring and the disk are made of different materials.
  • the carrier ring and the disk are connected to one another by pressing, gluing or welding.
  • the special advantages of different materials can also be used particularly well. After use, the individual parts can be separated and disposed of separately or recycled.
  • the disk is formed by an automatically acting eccentric or centrifugal force clamping device.
  • the consumable part 7 of a tool according to the invention are kept particularly small and can be replaced particularly quickly, in particular without having to loosen and reattach the chucks or the like that are critical to incorrect operation each time.
  • the carrier body of a lamellar grinding tool according to the invention has a plurality of disks.
  • a flap grinding tool of the type mentioned or described above is characterized in that grinding flaps are arranged both on the circumference and on an end face of the flap grinding tool.
  • the design according to the invention enables simultaneous circumferential and forehead grinding with comparable performance features both in terms of grinding performance and tool life.
  • There is also the great advantage over the known tool design that there is practically no risk of breaking out of lamella! Because the lamellae are only stressed in a direction in which they are designed for a corresponding load, namely tensile load and not bending .
  • a lamellar grinding tool according to the invention is characterized in that the device for connecting the lamellar grinding tool is adapted with a quick-action clamping device in order to form part of a bayonet connection.
  • a quick-action clamping device in order to form part of a bayonet connection.
  • the device for connecting the flap grinding tool to a cutting clamping device comprises a single or multiple thread or nut thread, in particular if the thread is a steep thread and / or the thread is a rectangular or trapezoidal thread.
  • a flap grinding tool of the type described above can be produced particularly easily if the device for connecting the flap grinding tool to a drive device comprises a shaft connected to the carrier body in a rotationally fixed manner and the carrier body consists of a synthetic resin body into which the
  • Sanding flaps and the shaft are directly embedded. This is also particularly advantageous with regard to disposal after use, since 9 provides a much simpler way of separating the material, thus reducing the disposal effort and at least partially recycling the components of the tool.
  • the carrier body is made by at least partially potting a space formed between the abrasive flaps positioned relative to one another and the shaft with a plastic or synthetic resin and / or the carrier body consists at least partially of a hard paper (fiber material).
  • a quick-action clamping device for connecting a flap grinding tool to a drive device, in which the quick-action clamping device is designed to interact with a corresponding flap grinding tool, in particular if the disk is such a quick-action clamping device, and in a set of such a flap grinding tool and such a cutting device 1.
  • FIG. 1 shows a flap grinding tool according to the invention with radially arranged grinding flaps
  • 2 shows a flap grinding tool according to the invention with grinding flaps arranged radially and on the end face
  • Fig. 3 shows a flap grinding tool according to the invention, in which a
  • Shank for driving the tool and the grinding flaps are embedded directly in a synthetic resin body; each in partial section;
  • Fig. 4 shows a flap grinding tool according to the invention with radially arranged grinding flaps, in which the disc of
  • Centrifugal tensioning device is formed (partially in a schematic representation).
  • FIG. 1 shows a flap grinding tool according to the invention, which is symmetrical about an axis of rotation 1 and has a plurality of grinding flaps 2 arranged on the circumference.
  • the grinding flaps 2 are in a conventional manner, for. B. attached by means of an adhesive 3 on a carrier body 4a, 4b.
  • the carrier body here comprises, for example, a deep-drawn metal disk 4a which, as a device for connecting the flap grinding tool to a drive device, has a hole 5 for receiving a screw fastening of a conventional drive spindle.
  • a carrier ring 4b is fastened in the region of the outer circumference of the metal disc 4a.
  • On the outside of the carrier ring 4b is an approximately cylindrical surface 6 oriented to the axis of rotation 1 11 is formed, on which the adhesive 3 for attaching the grinding flaps 2 is applied, ie the lateral surface 6 is inclined approximately 0 ° to the axis of rotation 1.
  • the metal disc 4a comprises a central element 7 which extends essentially radially to the axis of rotation 1.
  • a contact surface 8 is formed for contact with a drive device.
  • the metal disc 4a is cranked, resulting in a particularly mechanically stable design.
  • the disc 4a is cranked so far that the contact surface 8 is arranged axially outside of a rotating body circumscribed by the outer edges of the grinding flaps 2.
  • such a tool according to the invention can also be used particularly well on hand-held grinders, in particular angle grinders, which expands its field of application. In particular, this avoids that the radially outer slats 2 can collide with a conventional protective hood of a commercially available angle grinder and the user could be tempted to remove the protective hood.
  • At least some of the grinding flaps 2 protrude axially on at least one side beyond the boundary of the at least one lateral surface 6, in particular if the grinding flaps 2 are at least 3 mm beyond the boundary of the at least one lateral surface 6 protrude.
  • the carrier body can comprise a plastic, preferably a fiber-reinforced plastic, and / or the carrier body can be made of aluminum or steel. It is advantageous if the disk 4a is made of a plastic, 12 is preferably made of a fiber-reinforced plastic, or the disc 4a is made of aluminum or steel.
  • the carrier ring 4b is made of a plastic, preferably a fiber-reinforced plastic, a hard rubber or a hard paper, or that the carrier ring 4b is made of aluminum or steel.
  • disc 4a and carrier ring 4b are made of materials that can be welded together, e.g. Steel or aluminum.
  • a weld seam for connecting disk 4a and carrier ring 4b is designated 4c, which, depending on the expediency, can be formed all the way round or only in sections or as a spot weld.
  • the carrier ring 4b and the disk 4a are made of different materials.
  • the lamellar grinding tool shown in FIG. 2 has been found to be particularly efficient for the machining of molds in mold construction in experiments.
  • grinding flaps 2 are arranged both on the circumference 9 and on an end face 10 of the flap grinding tool.
  • the design according to the invention enables simultaneous circumferential and face grinding with comparable performance features both in terms of grinding performance and tool life.
  • 13 There is practically no risk of slat parts breaking out, since the slats are only stressed in the direction of pull in which they are designed for a corresponding load.
  • the flap grinding tool according to the invention shown in Fig. 3 is particularly easy to manufacture, since a shaft 11 serves as a device for connecting the flap grinding tool to a drive device which is rotatably connected to the carrier body and the carrier body consists of a synthetic resin body 12 in which the grinding flaps 2 and the shaft 11 are directly embedded. This is also particularly advantageous with regard to disposal after use, since there is a much simpler possibility of separating the material and thus reducing the disposal effort and at least partially recycling the components of the tool.
  • the carrier body is formed by at least partially potting a space formed between the abrasive flaps 2 positioned relative to one another and the shaft 11 with a plastic or synthetic resin.
  • a plastic or synthetic resin The use of hard paper (fiber material) has proven to be particularly suitable.
  • FIG 4 a particularly advantageous embodiment of the invention is shown schematically and partially simplified. This is particularly suitable for use on a stationary grinding machine in production.
  • the grinding flaps 2 (only a few of which are distinguished) are glued like in the other embodiments 14
  • the carrier ring 4b is arranged radially on the outside around a centrifugal force or eccentric clamping device, which takes the place of the disk 4a in the other described embodiments.
  • This centrifugal force or eccentric clamping device can comprise, for example, a turned aluminum core 13, which has a hole 5 for receiving a mandrel or can otherwise be suitably designed for coupling to a drive.
  • the aluminum core 13 or a corresponding component made of any other suitable material can be shaped like a hub.
  • a rubber ring 14 is vulcanized radially around the core 13 in the embodiment shown.
  • the rubber ring 14 is provided with numerous slots 15 from its circumference, the slots 15 not reaching to the radially inner edge of the rubber ring 14 and being arranged inclined with respect to the radius.
  • the segments 16 formed between two slots 15 strive, due to the centrifugal forces that occur, to straighten up radially and thus enlarge the outer diameter of the rubber ring 14. If there is a support ring 4b pushed onto the rubber ring 14, this is automatically tensioned by the clamping forces that occur.
  • the carrier rings 4b equipped with grinding flaps 2b can be easily axially pulled off and pushed on when the machine is at a standstill, which results in minimal set-up times when changing tools.
  • this is particularly safe, since no screw connections from mandrels or chucks have to be loosened and tightened again, which means that nothing can be forgotten or done wrong. 15
  • the arrangement of the segments 16 leads to the application of a load torque, e.g. by grinding work, by the friction between the rubber ring 14 and the carrier ring 4b to increase the clamping and therefore an increase in the transmissible torque, e.g. to prevent the flap grinding tool from blocking on the workpiece.
  • a load torque e.g. by grinding work
  • the friction between the rubber ring 14 and the carrier ring 4b to increase the clamping and therefore an increase in the transmissible torque, e.g. to prevent the flap grinding tool from blocking on the workpiece.
  • mount the carrier ring 4b in such a way that the orientation of the grinding lamellae 2 and slots 15 is in the same direction, as a result of which the rubber ring 14 advances when the load torque increases on the circumference of the carrier ring 4b
  • Swiveling the segments 16 inwards and relative to the carrier ring 4b results in a reduction in the clamping force.
  • This characteristic similar to a slip clutch can e.g. can be used for increased accident protection in certain applications.
  • a flap grinding tool in which the at least one of the lateral surfaces 6 or 10 is arranged approximately parallel to the axis of rotation or inclined up to and including 90 ° to the axis of rotation 1 and the carrier body is a device for connecting the flap grinding tool to a quick-action clamping device for connecting the flap grinding tool to a drive device.
  • the device for connecting the flap grinding tool to a quick-action clamping device is adapted to form part of a bayonet or bayonet connection that is common, for example, with sealing caps.
  • a connection allows a particularly safe and quick connection of the tool to a drive and the correct seating of the tool is clearly visible.
  • a single or multi-start screw or nut thread can also be provided, in particular as a steep thread, the thread advantageously being a rectangular or trapezoidal thread.
  • the flap grinding tool has a large length in the axial direction to form a large grinding width. It is expedient if the carrier body has two or more disks 4a in order to ensure good support of the carrier ring 4b on the drive shaft and thus a uniform removal.

Abstract

L'invention concerne un outil abrasif à lamelles, présentant une configuration symétrique autour d'un axe de rotation (1) et comportant une pluralité de lamelles abrasives (2) disposées sur la périphérie et/ou les faces frontales, un corps porteur (4a, 4b, 12, 13, 14) sur lequel sont fixées les lamelles abrasives (2), et un système (5, 8, 11) permettant de relier l'outil abrasif à lamelles avec un dispositif d'entraînement. Le corps porteur (4a, 4b, 12, 13, 14) présente au moins une surface latérale (6, 10) à symétrie de révolution, sur laquelle les lamelles abrasives (2) sont fixées au moins partiellement. Ce corps porteur (4a, 4b, 12, 13, 14) comprend au moins un élément central (7) se présentant sous la forme d'un disque (4a), lequel élément central (7) s'étend sensiblement radialement par rapport à l'axe de rotation (1). Le système permettant de relier l'outil abrasif à lamelles avec un dispositif d'entraînement possède une surface d'appui (8) formée par le disque (4a) et destinée au raccordement de l'outil abrasif à lamelles avec un dispositif d'entraînement. Le corps porteur (4a, 4b, 12, 13, 14) comporte également un anneau porteur (4b), ainsi qu'un dispositif de serrage rapide destiné au raccordement d'un outil abrasif à lamelles avec un dispositif d'entraînement, et un ensemble constitué d'un outil abrasif à lamelles et d'un dispositif de serrage rapide.
EP99916867A 1998-03-21 1999-03-22 Outil abrasif a lamelles Expired - Lifetime EP1068048B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19812515 1998-03-21
DE19812515A DE19812515A1 (de) 1998-03-21 1998-03-21 Lamellenschleifwerkzeug
PCT/EP1999/001934 WO1999048647A1 (fr) 1998-03-21 1999-03-22 Outil abrasif a lamelles

Publications (2)

Publication Number Publication Date
EP1068048A1 true EP1068048A1 (fr) 2001-01-17
EP1068048B1 EP1068048B1 (fr) 2004-11-03

Family

ID=7861850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99916867A Expired - Lifetime EP1068048B1 (fr) 1998-03-21 1999-03-22 Outil abrasif a lamelles

Country Status (4)

Country Link
US (1) US6866572B1 (fr)
EP (1) EP1068048B1 (fr)
DE (2) DE19812515A1 (fr)
WO (1) WO1999048647A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10042109C2 (de) * 2000-08-28 2003-07-03 M & F Entw & Patentverwertungs Polierwerkzeug
JP2006501269A (ja) * 2002-09-16 2006-01-12 アルコン マニュファクチャリング，リミティド 血管新生を処置するためのｐｄｅｉｖインヒビターの使用
KR20080109718A (ko) * 2006-02-20 2008-12-17 가부시키가이샤 지벡크 테크놀로지 브러시 모양 숫돌
DE102008063943A1 (de) 2008-12-19 2010-06-24 Abb Ag Werkzeug
DE102010046878B3 (de) * 2010-09-29 2011-12-15 Dipl.-Ing. Günter Wendt GmbH Lamellenschleifwerkzeug
DE202013105892U1 (de) 2013-12-20 2014-03-13 Heinrich Kreeb Gmbh & Co. Kg Schleifkörper
US10399207B2 (en) * 2014-10-27 2019-09-03 Taimei Chemicals Co., Ltd. Polishing brush
DE102015122233A1 (de) * 2015-12-18 2017-06-22 Thyssenkrupp Ag Massereduzierter Schleif-Grundkörper
EP3434414A1 (fr) * 2017-07-26 2019-01-30 Klingspor AG Disque de traitement des matériaux

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US938223A (en) * 1908-09-03 1909-10-26 Robert F Dockery Machine for making continuous pipes.
GB938223A (en) 1959-10-30 1963-10-02 Rexall Drug Chemical Abrasive devices
US3191208A (en) 1962-04-19 1965-06-29 George R Churchill Company Inc Buffing wheel
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JPS6094271A (ja) 1983-10-29 1985-05-27 Nippon Rejibon Kk 回転研削研磨具
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Also Published As

Publication number Publication date
DE59910996D1 (de) 2004-12-09
WO1999048647A1 (fr) 1999-09-30
EP1068048B1 (fr) 2004-11-03
DE19812515A1 (de) 1999-09-23
US6866572B1 (en) 2005-03-15

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