EP1058597A1 - Disque abrasif en eventail - Google Patents

Disque abrasif en eventail

Info

Publication number
EP1058597A1
EP1058597A1 EP99969234A EP99969234A EP1058597A1 EP 1058597 A1 EP1058597 A1 EP 1058597A1 EP 99969234 A EP99969234 A EP 99969234A EP 99969234 A EP99969234 A EP 99969234A EP 1058597 A1 EP1058597 A1 EP 1058597A1
Authority
EP
European Patent Office
Prior art keywords
base body
material processing
rotating disc
processing
covering
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.)
Withdrawn
Application number
EP99969234A
Other languages
German (de)
English (en)
Inventor
Mario Gail
Herbert Gail
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.)
C KLINGSPOR GmbH
Original Assignee
C KLINGSPOR 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 C KLINGSPOR GmbH filed Critical C KLINGSPOR GmbH
Publication of EP1058597A1 publication Critical patent/EP1058597A1/fr
Withdrawn legal-status Critical Current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
    • B24D13/16—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face comprising pleated flaps or strips

Definitions

  • the invention relates to a rotary disc for processing material surfaces with the features of the preamble of claim 1.
  • rotary discs are known from DE-Ul 90 02 384.6 or Japanese patent application Sho 63-168055 by Yuichi Ichiguchi.
  • EP-AI 0 011 116 the disk-shaped base body is provided with a material processing covering on its two end faces, in which grinding lamellae with radial extension and fan-shaped overlap in the circumferential direction are arranged on an end-face ring zone of the base body, also called base plate.
  • Rotary disks of this type in which both end faces of a base body are provided with a material processing covering with the fan-shaped overlap of grinding flaps, are a special case of so-called flap discs, as they occur when only one end face of the base body is occupied, for example from FIG. 2 of EP-AI 0 826 462 are known.
  • flap discs on the market in which the work surface either runs at right angles to the axis, as in the case of FIG. 2 of EP-AI 0 826 462, or is inclined relative to it.
  • the base body is typically formed from a flat material.
  • Flap discs correspond to the German one DIN standard 69134 and are further described in "Principles for the implementation of the type examination and certification of abrasives made of bonded abrasives and abrasives on base ZH1 / 670 part 4 sheets 2205 and 2206.
  • flap discs are particularly widespread in hand-held angle grinders; mechanical use in stationary machines is also an option.
  • the flap discs of this type are particularly distinguished by the fact that they are suitable for high-performance applications at up to 80 m / sec. and more maximum working speed can be used.
  • a circumferential speed of 80 m / sec means, according to the current legal interpretation, a minimum break resistance of up to 150 m / sec. With a conventional diameter of the rotating disc of 115 mm, this results in a speed of 24,900 revolutions / min. This is a very high requirement. You can use up practically the entire occupancy depth of the base body with the grinding flaps.
  • the material processing covering arranged with a fan-shaped overlap of the grinding lamellas is stressed and worn in the axial direction of the flap discs, that is to say on the end face, wherein the wear, as mentioned, can then take place over the entire occupancy depth.
  • the flap disc can also be subjected to wear and tear on the circumference while engaging grooves or other recesses, provided that the material processing surface protrudes radially beyond the base body.
  • the arrangement and design of the grinding flaps already cause the occupancy depth of the base body to be so great before the material-processing covering arranged in a fan-shaped manner that the space prescribed for protective housings for the angle grinder or other grinding device is largely filled. Furthermore, with flap discs after wear the processing slats a disposal problem in that the base body, which consist of glass fiber, plastic or the like, can no longer be used after use and must be destroyed.
  • Such multi-part arrangements are more complex and prone to malfunction than such rotary disks for processing material surfaces in which both opposite end faces of a base body are each covered with a material processing coating to form a single grinding tool.
  • two flanks of a groove can be machined simultaneously in a special case, or at least the two flanks can be grinded or polished one after the other while maintaining the groove engagement with the same direction of rotation of the rotary disc.
  • the functions of two separately required individual rotary disks can be combined and the tool costs can be reduced, for example simply by the fact that only one common base body is required for the two material processing coverings.
  • the flap disc which is double-coated on both ends, combines the functions of two individual flap discs and doubles the time of use per base body or carrier plate with the same type of fan-shaped coating on both sides. At the same time, the efficiency with regard to the disposal of the base body is approximately doubled.
  • the base body is formed from a piece of flat material, which can consist of a metal or a reinforced plastic. Unstability at high working speeds, for example a peripheral speed of at least 80 m / sec, is to be feared.
  • the base body according to Japanese patent application Sho 63-168055 is made of two molded non- metallic flat material parts glued together.
  • the construction of the base body from the area-glued two flat material parts is complex in terms of production. It is known from both prior publications to arrange the processing surface on both end faces of the material processing coverings in a plane perpendicular to the axis. From DE-Ul 90 02 384.6 it is also known to arrange the machining surfaces on both sides at an acute angle from radially inward to radially outward in a straight line, possibly also with a different acute angle on both end faces.
  • the invention has for its object to make the possibility of working on the workpiece even more variable than before with a rotary disc that has a material processing coating on the two front sides of its base body and that is designed on at least one end face, and thereby design a geometry of the base body provide that with a relatively short axial depth ensures stability even at peripheral speeds of 80 m / sec and possibly more.
  • This object is solved by the features of claim 1.
  • a typical embodiment with a radially twisted straight line is to orient the radially inner area of the machining surface at right angles to the axis and the radially outer two areas at an angle of 4 * - 9 *, preferably 6 * , and radially further out of 10 * - 16 ', preferably 12 *, to be arranged so as to flow back from the radially innermost surface.
  • the profile of a profile part, which the base body or at least the wings for forms two material processing coverings is then complementarily formed on its two end faces in any case in the ring zone carrying the respective material processing covering, so that the base body or its profile part has a flattened lenticular cross section.
  • a relatively easy-to-produce rotary disc of the type according to the invention can be obtained, which remains stable even at peripheral speeds of 80 m / sec and more.
  • the versatility of the use of the rotary disc is further increased by the fact that thirdly the second material processing covering may not be designed as a flap disc, but in another known manner. If, on the other hand, the longest possible operating times with the same mode of operation are involved, the rotary disc according to the invention can also be designed as a flap disc on both sides.
  • a flap disc according to the invention is Particularly suitable for use as a surface or edge grinding wheel.
  • a geometrically particularly clear and simple embodiment of the rotary disc is shown in claim 2, according to which the machining surface, with a simple straight-line kink in the radial direction, has a contour flowing back radially outwards with respect to a flat central region.
  • the profiles of the end profile surfaces of the first and second material processing coverings can be chosen the same or different.
  • the radial extent of the base body can also be selected to be substantially smaller than the radial extent of the material processing coverings, even within the scope of the invention.
  • the receptacle on the base body for the drive shaft of the rotary disk is a central hole in this in a conventional manner, a quick change between the two material processing coverings is possible while exchanging the axial orientation of the rotary disk with the features of claim 9.
  • the profile part of the base body is preferably shaped as an injection molded part.
  • its material can be any material suitable for injection molding, including metal or metal alloys. However, the formation of a plastic is preferred.
  • the rotary wheel according to the invention is particularly suitable for use as a surface or edge grinding wheel. It is also possible to process the material on the circumferential side with respect to the rotating disk, for example when engaging in a groove or another depression.
  • the base body is the material abrasion radial direction is not in the way and can be dimensioned small enough for its support function while saving material costs. This does not exclude that in special cases both material processing surfaces have a radius that is smaller than or equal to the radius of the base body.
  • a material processing characteristic can, however, also consist in that in at least one material processing covering, preferably in both, granular particles are distributed in a binder. With different material processing characteristics, the type and / or grain size of the granular particles can then be different. On the other hand, if in both material processing coverings the binder containing the particles containing the particles is applied to a base, which in turn is applied to the base body - a practically expedient technique - the bases of the two material processing coverings can also be different. Likewise, the binders of the cover binders can be different if cover granules are used.
  • the second material processing covering can consist of a single preformed body. This can be formed from an open nonwoven fabric and / or can be elastomerically bonded. In the case of an elastomer-bound body, this can be provided with an insert distributed over its volume, preferably in the form of granular particles and / or a nonwoven fabric.
  • the base body is completely or partially made of an injection molded part using preferred technology, is preferably made of plastic, but in principle other embodiments of the profile part which forms the base body in whole or in part and which forms the profiles which carry the material processing coverings are also possible.
  • the profile part or the entire base body can be at least partially a fiber structure impregnated with synthetic resin, preferably as a woven fabric, knitted fabric or fiber layer.
  • synthetic resin is phenolic, polyester or epoxy resin.
  • the fibers of the fiber structure are preferably glass fibers.
  • the profile part is a plastic profile part, preferably an injection molded part, it can expediently be provided with a reinforcing insert.
  • a fiber insert preferably made of glass fibers, quartz fibers, carbon fibers, metal fibers and / or polamide fibers, is particularly suitable as a reinforcing insert.
  • the receptacle in the base body is not just the usual central hole, it should be arranged and designed in such a way that the axial depth and the radial extent of the first and second material processing cover are kept free of components of the receptacle.
  • the receptacle is designed as a hole, it is expediently provided with an internal thread which runs counter to the direction of rotation of the rotary disk.
  • Processing lamellae of a material processing covering designed as a flap disc advantageously have an abrasive applied to a base, in which case the base can then be glued to the base body.
  • the processing lamellae can also consist of an abrasive rubber body or an abrasive nonwoven body.
  • the sign of the angle of inclination of the first processing lamellae may be the same or different from or from the angle of inclination of the second Processing blades with their respective fan-shaped overlap.
  • the material processing characteristic can also be varied in that the number of processing lamellae of the first material processing surface is chosen differently from the number of processing lamellae of the second material processing surface.
  • FIG. 1 with a partial circumferential view of a cross section through the axis
  • Fig. 2 is an end view with an enlarged detail in Fig. 2a of an embodiment of a rotary disc.
  • the exemplary embodiment relates to a rotary disc in the form of a flap disc on both end faces of the base body.
  • a disk-shaped base body 2 which is sometimes also referred to as a base plate, has a hole 4 concentrically around the plate axis E, which serves as a receptacle for the drive shaft of the flap disc, which is not shown, and is therefore of circular design with a diameter H.
  • the base body 2 has two opposite end faces. On the outer circumference of the base body, which has a diameter dt, both end faces are each covered on a ring zone 6, which adjoins the outer circumference of the base body radially inwards, with processing lamellae 10 serving as grinding lamellae, which in turn protrude radially beyond the outer circumference dt of the base body 2 and thus describe a diameter D of the rotary disc that is larger than the diameter of the base body 2.
  • the machining lamellae 10 not only extend radially, but also overlap in a fan shape in the circumferential direction, as can also be seen in the detailed illustration X of FIG. 2a.
  • the processing lamellae 10 are each fastened to the relevant end face of the base body 2 by means of an adhesive 12.
  • the direction of rotation Y of the rotary disc is chosen so that when the processing lamellae 10 are stressed, they are pressed into their overlapping engagement and are not pressed out of it.
  • the ring zone 6 has a radial distance from the hole 4, which can be used differently.
  • a radially inner region 2a of the base body 2 is designed as a narrow perforated disk of constant thickness.
  • Hole 4 is arranged in this area.
  • the area 2a has the radial extent K as shown in FIG. 1.
  • the two axial ends of the hole 4 run conically or funnel-shaped into the base body 2 as insertion bevels 4a.
  • Radially outside, the area 2a of the base body 2 widens conically radially outwards in a first zone 2b, in order to pass into a cylindrical section 2d, which may be short but also longer here, and then thereafter at the angle alpha with respect to the central plane of the base body to taper radially outwards over a length W.
  • This length W describes an outer ring zone with a working surface arranged at an acute angle alpha obliquely to the central plane of the disc of the base body and thus also cylindrical working surface obliquely to the axial direction of the working tool.
  • the processing lamellae are carried both by the profile of the cylindrical section 2c and by the profile along the bevel dimension W, so that the profile of the material processing covering formed by the processing lamellae is bent once in a straight line in the radial direction.
  • the axial installation depth of the rotary disc is twice the dimension T, i.e. twice the distance from the central plane of the disc to the inner area of the rotary disc parallel to it radially inside of the occupancy measure W.
  • the material processing covering formed by the processing lamellae 8 projects radially beyond the disk-shaped base body 2 and leaves the circumference free.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

L'invention concerne un disque rotatif utilisé pour l'usinage de surfaces de matériaux, comprenant un corps de base (2) en forme de disque qui présente un logement (4) central destiné à recevoir l'arbre d'entraînement du disque rotatif. Les deux faces de ce corps de base sont pourvues, autour du logement (4) de celui-ci, chacune d'une garniture d'usinage, au moins une des deux garnitures d'usinage présentant des lamelles d'usinage (8a; 8b) qui sont disposées dans le sens radial tout en se chevauchant, en forme d'éventail, dans le sens circonférentiel. Selon l'invention, il est prévu que la surface d'usinage des deux garnitures d'usinage soit une surface profilée faciale, à symétrie de révolution, qui est, dans la zone radialement extérieure (le long de W), rentrante de façon inégale par rapport à la zone radialement intérieure (2d) et que le corps de base (2) présente une configuration correspondante.
EP99969234A 1998-12-29 1999-12-28 Disque abrasif en eventail Withdrawn EP1058597A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29823200U DE29823200U1 (de) 1998-12-29 1998-12-29 Rotationsscheibe
DE29823200U 1998-12-29
PCT/EP1999/010429 WO2000038884A1 (fr) 1998-12-29 1999-12-28 Disque abrasif en eventail

Publications (1)

Publication Number Publication Date
EP1058597A1 true EP1058597A1 (fr) 2000-12-13

Family

ID=8067285

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99969234A Withdrawn EP1058597A1 (fr) 1998-12-29 1999-12-28 Disque abrasif en eventail

Country Status (6)

Country Link
EP (1) EP1058597A1 (fr)
JP (1) JP2002533227A (fr)
CZ (1) CZ9904742A3 (fr)
DE (1) DE29823200U1 (fr)
SK (1) SK185899A3 (fr)
WO (1) WO2000038884A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010026971B4 (de) * 2010-07-13 2014-03-06 Schnarrenberger Produktion Gmbh Rotationssymmetrisches Werkzeug, insbesondere Schleifwerkzeug
WO2020149804A1 (fr) * 2019-01-19 2020-07-23 Ucer Zimpara Tasi Sanayi Ve Ticaret Limited Sirketi Disque abrasif double face
US20220258305A1 (en) * 2021-02-17 2022-08-18 David Edens Double-Sided Flap Disc for Use with a Mounted Grinder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0215979A (ja) * 1988-07-05 1990-01-19 Yuichi Ichiguchi 研磨具
DE9002384U1 (fr) * 1990-03-01 1990-05-03 Wendt, Guenther, 5227 Windeck, De
ES2172110T3 (es) * 1997-10-24 2002-09-16 Sia Abrasives Ind Ag Cuerpo abrasivo y dispositivo de sujecion.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0038884A1 *

Also Published As

Publication number Publication date
WO2000038884A1 (fr) 2000-07-06
DE29823200U1 (de) 1999-02-11
CZ9904742A3 (cs) 2001-08-15
JP2002533227A (ja) 2002-10-08
SK185899A3 (en) 2000-08-14

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