EP0900631B1 - Outil abrasif - Google Patents

Outil abrasif Download PDF

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Publication number
EP0900631B1
EP0900631B1 EP98116707A EP98116707A EP0900631B1 EP 0900631 B1 EP0900631 B1 EP 0900631B1 EP 98116707 A EP98116707 A EP 98116707A EP 98116707 A EP98116707 A EP 98116707A EP 0900631 B1 EP0900631 B1 EP 0900631B1
Authority
EP
European Patent Office
Prior art keywords
tool
tool according
tool body
ring
hub
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.)
Expired - Lifetime
Application number
EP98116707A
Other languages
German (de)
English (en)
Other versions
EP0900631A2 (fr
EP0900631A3 (fr
Inventor
Horst Grupe
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.)
Mv Marketing and Vertriebs Wielander & Schill GmbH
Original Assignee
Mv Marketing and Vertriebs Wielander & Schill 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 Mv Marketing and Vertriebs Wielander & Schill GmbH filed Critical Mv Marketing and Vertriebs Wielander & Schill GmbH
Publication of EP0900631A2 publication Critical patent/EP0900631A2/fr
Publication of EP0900631A3 publication Critical patent/EP0900631A3/fr
Application granted granted Critical
Publication of EP0900631B1 publication Critical patent/EP0900631B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • B24D7/16—Bushings; Mountings

Definitions

  • the invention relates to a tool for material removal Machining a workpiece according to the generic term of Claim 1, which is preferably for clamping in a hand-held machine tool is provided.
  • WO-A-80 00033 discloses a tool for material-removing processing of a workpiece, in which on the lateral surface of an essentially. rotationally symmetrical tool body Means are appropriate.
  • the lateral surface is thereby two flanges extending in opposite directions formed, which are designed such that these Bend radially outward using centrifugal force to remove the Adhesion between the flanges and one arranged around them Increase sanding belt.
  • the lateral surface is essentially always not uniform surface quality during processing guaranteed.
  • JP-A-57 066 866 relates to a very complex one Device in which abrasive material at intervals of a rigid rotary disc is added, the Abrasive material must also be inserted in a holder, which in turn is inserted in a fitting piece, so that A side guide between the abrasive material Rotary disc and the holder experiences. Furthermore, means one between the abrasive material and the rotating disc additionally arranged elastic element the curvature or Bending of the abrasive material affects.
  • US-AS-3 083 584 discloses a tool of type mentioned with a rotationally symmetrical Tool body that is essentially the shape of a Belted has around its outer surface with abrasive belt provided with material-removing agents is.
  • the tool body consists of an elastic Material through which there are several holes in the axial direction Extend towards the tunnel. These holes increase the Flexibility of the elastic material and thus the Deformability of the tire-shaped tool body, so that the tool body during operation because of the occurring Centrifugal forces expand in the axial direction, causing the Adhesion between the tool body and the one around it arranged grinding belt increased.
  • the elasticity of the Tool body also leaves a certain deformability of the Shell surface in the radial direction inwards. The stronger the deformation at a certain point on the lateral surface in radial inward direction, the larger the elastic restoring forces in the same place, so that a essentially even contact pressure in the contact area insufficient between tool body and workpiece is guaranteed.
  • the object of the invention is a tool to provide generic type, which in particular Using hand-held or hand-held Machine tools reduce the aforementioned disadvantages, one more efficient material-removing processing in an essential always uniform surface quality of the Workpiece enables and versatile for processing different areas can be used.
  • a cylindrical tool of the generic Type with a rotating, rotatable for material removal Machining area in which the lateral surface relative to Drive shaft tiltable, especially self-resetting can be tilted, even with a slight tilt the concentric drive shaft is still in essentially across the entire width of the tool extensive investment area and as a result a very much more uniform material removal from the workpiece surface.
  • the connector provides the retention of the predetermined rim diameter, so that one on the Tool transmitted torque, similar to a wheel or Mature, essentially evenly on the wreath is passed on.
  • an area of an edge area a forced radial deformation, this affects due of the circumferential rim also on adjacent edge areas from, the opposite in the axial direction Border region deformed in the opposite direction the wreath around the Connection device tilted and as an investment area in the essentially the entire width of the wreath is guaranteed.
  • connection device in the axial direction designed to be self-resetting the tool can absorb additional shear and torsional forces. Because of the self-resetting in the axial and radial directions displaceable or deformable tool, that can Tool pick up slight upsets or to areas of the Pass on the tool outside the system area.
  • Embodiment of the tool according to the invention have in particular in one piece from a plastic material preferably produced in an injection molding process Tool body proven to be useful and advantageous.
  • the tool body also called carrier, for Inclusion of abrasives on a base, especially in Ring or sleeve shape, wherein the body made of a soft plastic or elastomer is made and in this body at least on one end Steel edge is attached or incorporated, which at the same time as wear protection for the wearer and as Side guide for the abrasive.
  • the tool body is also thereby characterized in that on the second end face by a loosely inserted steel disc also wear protection for the tool body and a side guide at the same time is generated for the abrasive.
  • An embodiment of the Tool body in which the abrasive after use can be changed easily by moving it axially.
  • the tool body expediently has a built-in Steel edge still has flexibility, which the nestling of the abrasive to the surface to be processed.
  • FIGS. 1, 2 and 3 which, for example, is a one-piece injection molding process trained embodiment of the tool according to the invention represent.
  • FIGS. 1, 2 and 3 which, for example, is a one-piece injection molding process trained embodiment of the tool according to the invention represent.
  • the tool according to the invention has a cylindrical one Wreath 1, the outer surface of which is the receiving surface for attachable material-removing means 10, such as for example, a sanding sheet or paper.
  • This schematically illustrated hub can be preferred Way over a quick coupling according to the German Utility model DE G 94 16 005.8 have, whose Content by reference also completely to the subject of Disclosure of this description is made.
  • the tool according to the invention also has a trap corresponding coupling, the concentric to the axis of rotation is arranged essentially in the center of gravity of the tool.
  • the outer surface 5 of the ring 1 is with circumferential grooves 6 provided that an improved with rotation of the tool Adhesion and self-centering around the outer surface 5 ensure tensioned machining flow.
  • the disc 2 is, as can be seen particularly in FIG. 3, in the middle of the otherwise arranged hollow cylindrical ring 1, so that in the circumferential edge regions 1a and 1b of the Wreath 1 are self-supporting and in the radial direction, are flexible.
  • the radial rigidity is relatively high having disc 2 is to their flexibility in the axial Increase direction with circular around hub 3 arranged through openings 7 provided.
  • edge areas 1a, 1b and the disc 2 are the thickness dimensions of the used material, the intended use, the diameter and the width 8 of the tool depending and predefined produced.
  • the drive shaft 4 becomes sketchy, as in FIG. 3 indicated from the tool axis X, for example by a slight tilting of the machine tool in the direction of the Swiveled arrow C, change on the tool transmitted forces and cause a deformation of the Tool, in particular an inclination thereof Lateral surface.
  • edge region 1 a lying on the workpiece surface 9 is deformed in the direction of arrow V1.
  • a one-sided forced deformation V1 and this forced opposite deformation of the edge regions 1a and 1b in the direction of V1 and V2 thus causes area-wise tilting of the wreath in a plane around the Disk axis Y and ensures that the Investment area continues essentially over the entire width 8 of the wreath 1 extends.
  • the disc 2 can be designed like a membrane and have a radial waveform around a to provide increased elasticity.
  • the torque can be reduced to Tool-transmitting drive shaft 4 one-sided or also - with one extending through the tool Shaft 4 - clamped on both sides in a machine tool be, which is suitable for use of the invention Tools a diverse range of both hand-held or guided as well as automated or fixed installed machine tools.
  • the Shell surface 5, as shown in Figure 4 on the outside a cylinder 11 made of elastic solid material, such as for example, rubber, caoutchouc, an elastic polymer or the like.
  • the cylinder 11 can defined deformation or to achieve defined Restoring forces further elements inside include.
  • Belt 12 is embedded near the outer surface 3.
  • the belt 12 can be made of steel, plastic, a nylon or fabric Kevlar exist and should preferably be elastic be designed to deform the lateral surface 5 continue to allow.
  • a particularly preferred one Embodiment includes a steel belt 12 which is shown in FIG a rubber cylinder 11 is vulcanized.
  • a side guide plate 13 the has a plate-like cross section and a lateral one Stop in the axial direction for a band 14 on which the material-removing means 10 are arranged, forms.
  • This Guide disc 13 can be attached to the tool the drive shaft 4 in a single fastening step with the quick coupling mentioned above become.
  • a flat can be used to reinforce the stop shoulder 15 Ring 16 can be attached to or within the cylinder 11, which is also kept elastic in the radial direction is however higher lateral forces in the axial direction can record.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (13)

  1. Outil pour usinage par abrasion d'une pièce à usiner, comprenant
    un corps d'outil (1, 2, 3) sensiblement à symétrie de révolution,
    contre la surface latérale (5) duquel sont montés des moyens d'usinage par abrasion (10) et
    qui comporte un arbre d'entraínement (4) concentrique ou un logement (3) pour un arbre d'entraínement (4) concentrique destiné à transmettre un couple de rotation à la surface latérale (5) du corps d'outil (1, 2, 3),
       caractérisé en ce que
       le corps d'outil est formé par une couronne cylindrique (1) extérieure, un moyeu (3) et une unité (2) destinée à relier la couronne (1) avec le moyeu (3), les zones de bordure de la couronne (1) étant en porte à faux dans le sens axial et la surface latérale (5) étant inclinable par rapport à l'arbre d'entraínement (4), en particulier étant inclinable par autorepositionnement.
  2. Outil selon la revendication 1,
       caractérisé en ce que
       l'unité (2) destinée à relier la couronne (1) avec le moyeu (3) est conçue sensiblement en forme de disque et/ou de roue à rayons.
  3. Outil selon la revendication 1 ou 2,
       caractérisé en ce que
       l'unité (2) destinée à relier la couronne (1) avec le moyeu (3) est déformable dans le sens axial par autorepositionnement.
  4. Outil selon l'une quelconque des revendications 1 à 3,
       caractérisé en ce que
       la surface latérale (5) est munie de cannelures (6) et/ou de pyramides périphériques.
  5. Outil selon l'une quelconque des revendications 1 à 4,
       caractérisé en ce que
       le corps d'outil (1, 2, 3) est réalisé en une seule pièce.
  6. Outil selon l'une quelconque des revendications 1 à 5,
       caractérisé en ce que
       le corps d'outil (1, 2, 3) est réalisé en matière plastique.
  7. Outil selon l'une quelconque des revendications 1 à 6,
       caractérisé en ce que
       l'unité (2) destinée à relier la couronne (1) avec le moyeu (3) est déformable dans le sens radial par autorepositionnement.
  8. Outil selon la revendication 6,
       caractérisé en ce que
       le corps d'outil (1, 2, 3) est conçu sensiblement en forme de cylindre (11) élastique et une ceinture (12) périphérique est incorporée dans le corps d'outil.
  9. Outil selon l'une quelconque des revendications précédentes, comprenant en outre au moins un disque de guidage (13) latéral.
  10. Outil selon l'une quelconque des revendications précédentes, caractérisé en ce que le corps d'outil (1, 2, 3) pour recevoir des moyens abrasifs (10) sur un support (14) est conçu en particulier en forme d'anneau ou de douille,
       dans lequel le corps est réalisé en matière plastique souple ou en élastomère et une carre en acier (13) est agencée dans ledit corps sur au moins une face frontale ou est insérée dans celle-ci, laquelle carre fait fonction, en même temps, de protection anti-usure pour le corps d'outil (1, 2, 3) et de guidage latéral pour le moyen abrasif (10).
  11. outil selon la revendication 10, dans lequel
       une protection anti-usure pour le corps d'outil et en même temps un guidage latéral pour le moyen abrasif est réalisé sur la deuxième face frontale du corps d'outil par un disque en acier (16) monté de manière mobile.
  12. Outil selon la revendication 10 ou 11, dans lequel
       le moyen abrasif (10) peut être remplacé facilement après usage par un coulissement axial.
  13. Outil selon la revendication 10, 11 ou 12, dans lequel
       le corps d'outil, malgré l'insertion d'une carre en acier (13, 16), possède encore une flexibilité, grâce à laquelle le moyen abrasif (10) peut épouser les formes de la surface à usiner.
EP98116707A 1997-09-08 1998-09-03 Outil abrasif Expired - Lifetime EP0900631B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29716041U DE29716041U1 (de) 1997-09-08 1997-09-08 Werkzeug zur materialabtragenden Bearbeitung
DE29716041U 1997-09-08

Publications (3)

Publication Number Publication Date
EP0900631A2 EP0900631A2 (fr) 1999-03-10
EP0900631A3 EP0900631A3 (fr) 1999-07-07
EP0900631B1 true EP0900631B1 (fr) 2003-12-10

Family

ID=8045647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98116707A Expired - Lifetime EP0900631B1 (fr) 1997-09-08 1998-09-03 Outil abrasif

Country Status (4)

Country Link
EP (1) EP0900631B1 (fr)
JP (1) JPH11156691A (fr)
DE (2) DE29716041U1 (fr)
TW (1) TW419413B (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE559229C (de) * 1932-09-17 Albert Fezer Umlaufende, mit Schleifpapier ueberzogene Schleifwalze
US2142873A (en) * 1937-09-28 1939-01-03 Niles Bement Pond Co Expansible polishing wheel
US2963833A (en) * 1957-08-06 1960-12-13 Mermac Products Inc Expansible wheel and hub structure
US3083584A (en) * 1960-07-09 1963-04-02 Nanson Arthur Contact or similar wheels for abrasive belts or the like
JPS555295A (en) * 1978-06-07 1980-01-16 Mechanical Plastics Corp Drum for sanding belt
JPS5766866A (en) * 1980-10-09 1982-04-23 Ken Hagino Grinder

Also Published As

Publication number Publication date
DE59810381D1 (de) 2004-01-22
TW419413B (en) 2001-01-21
EP0900631A2 (fr) 1999-03-10
DE29716041U1 (de) 1999-01-14
EP0900631A3 (fr) 1999-07-07
JPH11156691A (ja) 1999-06-15

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