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EP2286959B1 - Outil d'ébauchage et de ponçage - Google Patents

Outil d'ébauchage et de ponçage Download PDF

Info

Publication number
EP2286959B1
EP2286959B1 EP10167695.5A EP10167695A EP2286959B1 EP 2286959 B1 EP2286959 B1 EP 2286959B1 EP 10167695 A EP10167695 A EP 10167695A EP 2286959 B1 EP2286959 B1 EP 2286959B1
Authority
EP
European Patent Office
Prior art keywords
grinding
radius
fiber
curvature
support plate
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.)
Not-in-force
Application number
EP10167695.5A
Other languages
German (de)
English (en)
Other versions
EP2286959A2 (fr
EP2286959A3 (fr
Inventor
Bernd Stuckenholz
Nicolas Huth
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.)
August Rueggeberg GmbH and Co KG
Original Assignee
August Rueggeberg GmbH and Co KG
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
Priority claimed from DE200910038583 external-priority patent/DE102009038583A1/de
Priority claimed from DE201010029553 external-priority patent/DE102010029553A1/de
Application filed by August Rueggeberg GmbH and Co KG filed Critical August Rueggeberg GmbH and Co KG
Publication of EP2286959A2 publication Critical patent/EP2286959A2/fr
Publication of EP2286959A3 publication Critical patent/EP2286959A3/fr
Application granted granted Critical
Publication of EP2286959B1 publication Critical patent/EP2286959B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • 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
    • B24D7/02—Wheels in one piece
    • B24D7/04—Wheels in one piece with reinforcing means

Definitions

  • the invention relates to a snap-grinding tool according to the preamble of claim 1.
  • Schmpp grinding tools are known in practice in large numbers.
  • the fiber grinding wheels are flexible and releasably mounted on the support plate.
  • the mounting on the support plate is done by a screw-on flange in the Kröpfungs Kunststoff the fiber grinding wheel.
  • the service life of the fiber grinding wheel is short, for example only about 1 minute.
  • the abrasive grain of the fiber abrasive disc shows its first signs of wear, whereby the surface of the workpiece to be machined is no longer completely uniform. The fiber grinding wheel is therefore already replaced after this time.
  • Abrasive base are known, as they are common practice, which thus consist of a serving as a support or underlay elastically flexible disc on which an abrasive grain is attached by means of a synthetic resin.
  • a grinding tool having the features of the preamble of claim 1 is known, which has a mounted on a backsheet resin-bonded abrasive grain layer, wherein the backsheet is adhered by means of an adhesive layer on a Supporting substrates.
  • the backsheet can be made of cotton fabric.
  • the Supporting Substrates may consist of a phenolic resin impregnated glass fiber fabric.
  • WO 2008/035934 A1 is an abrasive coated abrasive tool known, which is formed as a composite tool and is produced in a single manufacturing process as a flat grinding tool. It has in the middle an opening for receiving the drive shaft of a grinding machine.
  • a binder layer has been applied to a vulcanized fibrous substrate and abrasives have been spread. This was dried in an oven and then a second make coat was applied. This is by nature a uniform composite train.
  • an abrasive article comprising a plastic semi-rigid plastic disc having an abrasive coated abrasive fiber disc secured thereto by an adhesive layer on a vulcanized fiber.
  • the weakly cambered, ie convexly curved towards the grinding side plastic plate with fiber grinding disc is firmly connected to a concavely curved counter-plate, wherein the plastic plate and the counter-plate are clamped together by means of a bolt.
  • a nut is attached, into which the bolt is screwed.
  • silicon carbide ie a ceramic grain, can be used as the abrasive grain.
  • WO 02/074 494 A1 is a grinding tool which has a flat support plate on which a grinding wheel is fixed by means of hot melt adhesive.
  • the grinding wheel itself consists of a flexible carrier material, on which the abrasive grain is attached.
  • the flexible grinding wheel projects beyond the edge of the support plate and is convexly curved in this area. In the area of the carrier plate, it is even. It is a tool for smoothing drywall.
  • the invention has for its object to design a roughing-grinding tool of the generic type so that it has a long service life with simple and inexpensive construction.
  • the fiber disc is made of vulcanized fiber, a material that has been known for a century and a half and made from cotton fibers. Surprisingly, it has also been found that the roughing and grinding tool is far superior to conventional roughing wheels both in terms of machined mass per unit time and in terms of total machinable mass. This is especially true because Ceramic grain is used as an abrasive.
  • the grinding wheel with the abrasive coating is slightly convex towards the grinding side. Since such roughing wheels, ie roughing and grinding tools, are used on hand-held grinding machines, an exact angular position of the grinding tool with respect to the surface to be ground is generally not maintained during use. The slight curvature causes no high local surface pressures between the grinding wheel and the workpiece to be machined, with the result of a corresponding tearing of abrasive grain occur. This leads to a considerable increase in the service life or the cutting performance.
  • the further subclaims give advantageous developments again.
  • FIGS. 1 to 3 illustrated roughing-grinding tool has a in the usual way from impregnated with phenolic resin and compressed glass fibers existing support plate 1, which has a flat, annular clamping area 2 in the usual way, in which a likewise circular opening 3 for receiving a drive shaft Drive machine is formed.
  • the annular clamping region 2 surrounding the opening 3 is provided with a metal ring 5 on the rear side of the support plate 1 remote from a grinding side 4.
  • the clamping area 2 is adjoined by a cranking area 6, which is likewise of annular design and rises radially to the axis 7 of the carrier plate 1 towards the grinding side 4.
  • annular closes Grinding area 8 which is inclined radially to the axis 7 against the cranking area 6, namely radially to the axis 7 outwardly from the grinding side 4 away.
  • This embodiment of a support plate 1 is well known and common.
  • a fiber grinding wheel 9 is attached on the grinding side 4, which is a so-called abrasive on a base, which consists of a fiber disk 10 as a support or base and a resin-bonded abrasive coating 11.
  • the fiber disk 10 is made of vulcanized fiber, which is a bound, pressed material based on cotton fibers.
  • the abrasive coating 11 is formed by ceramic grain 11.1, which is produced from a microgranulate by sintering. The microgranules break individually from the respective grain, so that thereby the stability of the ceramic grain 11.1 is significantly increased compared to conventional abrasives.
  • the resin bonded abrasive pad 11 is bonded to the fiber disk 10 in the usual manner.
  • the fiber disk 10 of the fiber grinding wheel 9 is connected to the grinding side 4 of the support plate 1 by means of an adhesive layer 12.
  • the radius R1 of the support plate 1 is - like FIG. 1 can be removed - slightly smaller than the radius R9 of the fiber grinding wheel 9, without the fiber grinding wheel 9 projecting radially to the axis 7 on the outer edge 13 of the support plate 1.
  • the cranking region 6 has a radius R6 from the axis 7 at the transition to the main grinding region 8.
  • the main grinding area 8 of this non-inventive grinding tool has a radius R8 from the axis 7 which is equal to the radius R9 of the fiber grinding wheel 9.
  • FIG. 4 the same or similar parts or regions are present as in the embodiment according to the FIGS. 1 to 3 , the same reference numbers are used with a prime.
  • the support plate 1 ' consists of a glass cloth impregnated with epoxy resin. He has - as in the embodiment of the FIGS. 1 to 3 - a constant thickness h.
  • the planar annular clamping area 2 ' is likewise formed with a circular opening 3' for receiving a drive shaft of a drive machine.
  • the annular clamping region 2 'surrounding the opening 3' is not reinforced with a metal ring in this exemplary embodiment.
  • the curvature region 6 'adjoining the clamping region 2' is likewise of annular design and rises radially to the axis 7 'of the carrier plate 1' towards the grinding side 4 '.
  • the planar clamping region 2 ' merges with a radius of curvature r2' in the cranking region 6 '.
  • the cranking region 6 ' is adjoined in turn by an annular main grinding region 8', which extends radially to the axis 7 'against the cranking region 6', namely radially to the axis 7 'outwardly from the grinding side 4' is inclined. Seen from the axis 7 'to the outside of the grinding area 8' so from the grinding side 4 'inclined away.
  • FIG. 4 Also in the design FIG. 4 is on the grinding side 4 'of the support plate 1' a fiber grinding disc 9 'attached.
  • This is also a so-called abrasive on a base, which consists of a fiber disk 10 'as a support or base and a resin-bonded abrasive coating 11'.
  • the fiber grinding wheel 9 ' is thus a self-contained grinding wheel, which could be used, as described above for the prior art according to EP 1 741 515 B1 has been described. It is flexible, so flexible.
  • the structure of the fiber grinding wheel 9 ' corresponds to the above to the FIGS. 1 to 3 already described.
  • the abrasive coating 11 'thus has ceramic grain 11.1'.
  • the fiber slice 10 'of the fiber abrasive disc 9' connected to the support plate 1 'by means of an adhesive layer 12'.
  • cranking region 6 ' is in the grinding area 8' with a radius of curvature r6 'on.
  • the main grinding area 8 'itself is also curved, slightly convex to the grinding side 4' with a radius of curvature r8 '.
  • the outer grinding area 15 'adjoining the main grinding area 8' is inclined radially outward away from the grinding side 4 'and convexly curved toward the grinding side 4' with a radius of curvature r15 '.
  • the fiber abrasive disc 9 ' has a radius R9' from the axis 7 '.
  • the offset area 6 ' has a radius R6' from the axis 7 'at the transition to the main grinding area 8'.
  • the main grinding area 8 ' has a radius R8' from the axis 7 '.
  • FIG. 5 the use of the roughing-grinding tool according to the invention on manual grinding machines 19 emerges.
  • the roughing-grinding tool is mounted on an output shaft 20 of the hand grinder 19, which is inserted through the opening 3 of the grinding tool, so that the axis 7 coincides with the central axis of the output shaft 20.
  • the attachment of the grinding tool on the output shaft 20 by means of a clamping nut 21st

Landscapes

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

Claims (5)

  1. Outil d'ébauchage et de ponçage, constitué
    - d'un plateau support (1, 1') qui
    -- est conçu concentrique par rapport à un axe (7, 7') longitudinal central,
    -- présente un orifice (3, 3') central destiné à l'admission d'un arbre d'entraînement d'une machine d'entraînement, et
    -- est constitué d'un tissu de verre trempé dans une résine époxy d'épaisseur constante h, et
    - d'un disque (9, 9') de ponçage à base de fibres qui
    -- est formé par un disque à base de fibres (10, 10') comprenant un revêtement (11, 11') de produit de ponçage lié par une résine,
    -- présente une zone (8, 8') de ponçage externe, de forme circulaire, disposée radialement par rapport à l'axe (7, 7') longitudinal central,
    -- s'appuie sur le plateau support (1, 1') sans dépasser radialement par rapport à l'axe (7, 7') longitudinal central sur le bord externe (13) du plateau support (1),
    -- est collé sur le plateau support (1, 1') au moyen d'une couche d'adhésif (12, 12'), et
    -- présente une face (4, 4') de ponçage,
    caractérisé en ce
    que des grains de céramique (11.1, 11.1') sont prévus en tant que produit de ponçage,
    que le disque à base de fibres (10, 10') est constitué de fibres vulcanisées,
    que la zone de ponçage présente une zone de ponçage principale (8') et une zone de ponçage externe (15') lui succédant vers l'extérieur radialement par rapport à l'axe (7'), zone externe qui est conçue convexe par rapport à la face de ponçage (4') avec un rayon de courbure r15',
    que l'on ait 17 mm ≤ r15' ≤ 40 mm pour le rayon de courbure r15', et
    que la zone de ponçage principale (8', 8") présente un rayon interne R6' et un rayon externe R8' et que le disque de ponçage à base de fibres (9') présente un rayon externe R9', où :
    0,45 R9' ≤ R6' ≤ 0,7 R9' et
    0, 75 R9' ≤ R8' < R9'.
  2. Outil d'ébauchage et de ponçage selon la revendication 1, caractérisé en ce
    que la zone de ponçage principale (8', 8") est conçue convexe avec un rayon de courbure r8' jusqu'à la face (4') de ponçage.
  3. Outil d'ébauchage et de ponçage selon les revendications 1 et 2, caractérisé en ce
    que le rayon de courbure r15' est tel que r15' < r8' par rapport au rayon de courbure r8'.
  4. Outil d'ébauchage et de ponçage selon la revendication 2, caractérisé en ce
    que l'on agit : 190 mm ≤ r8' ≤ 300 mm et, de préférence, 200 mm ≤ r8' ≤ 250 mm, pour le rayon de courbure r8'.
  5. Outil d'ébauchage et de ponçage selon la revendication 1, caractérisé en ce
    que l'on ait 15 mm ≤ r15' ≤ 20 mm pour le rayon de courbure.
EP10167695.5A 2009-08-22 2010-06-29 Outil d'ébauchage et de ponçage Not-in-force EP2286959B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910038583 DE102009038583A1 (de) 2009-08-22 2009-08-22 Schleif-Werkzeug
DE201010029553 DE102010029553A1 (de) 2010-06-01 2010-06-01 Schleif-Werkzeug

Publications (3)

Publication Number Publication Date
EP2286959A2 EP2286959A2 (fr) 2011-02-23
EP2286959A3 EP2286959A3 (fr) 2011-03-16
EP2286959B1 true EP2286959B1 (fr) 2014-05-07

Family

ID=43216919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10167695.5A Not-in-force EP2286959B1 (fr) 2009-08-22 2010-06-29 Outil d'ébauchage et de ponçage

Country Status (9)

Country Link
US (1) US20110045750A1 (fr)
EP (1) EP2286959B1 (fr)
CN (1) CN101992429B (fr)
AU (1) AU2010212470A1 (fr)
BR (1) BRPI1003157A2 (fr)
CA (1) CA2715530A1 (fr)
RU (1) RU2010132291A (fr)
TW (1) TW201111108A (fr)
ZA (1) ZA201005883B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRM20110173A1 (it) * 2011-04-06 2012-10-07 Mattia Mauro Di Utensile.
KR101862371B1 (ko) * 2011-09-19 2018-05-29 주식회사 디어포스 그라인더용 친환경 연마제품 및 그 제조방법
CN202825577U (zh) * 2012-06-11 2013-03-27 深圳市常兴技术股份有限公司 磨削有机玻璃的金刚石磨具
JP6529210B2 (ja) * 2013-04-04 2019-06-12 スリーエム イノベイティブ プロパティズ カンパニー 研磨ディスクを用いる研磨方法およびこれに用いる物品
AU2014345944B2 (en) * 2013-11-11 2017-02-02 Gunter Wendt Gmbh Vulcanized fiber grinding tool
PL3504028T3 (pl) * 2016-08-23 2021-08-09 August Rüggeberg Gmbh & Co. Kg Narzędzie do szlifowania zgrubnego
US20220080555A1 (en) * 2020-09-16 2022-03-17 ÜÇER ZIMPARA TASI SAN.ve TIC.LTD.STI. Bilateral abrasive disc pad
KR102296729B1 (ko) * 2021-06-03 2021-08-31 빈인선 밀착 효율이 높은 전동연마기 탈부착용 연마디스크

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US3889430A (en) * 1972-05-17 1975-06-17 S P A M Abrasive tools
DE8814637U1 (de) 1987-12-16 1989-03-02 Reiling, Karl, 7535 Königsbach-Stein Schleifkörper
DE9017256U1 (de) 1990-12-21 1991-03-14 Wendt, Günther, 5227 Windeck Fächerstirnschleifscheibe
US5273558A (en) * 1991-08-30 1993-12-28 Minnesota Mining And Manufacturing Company Abrasive composition and articles incorporating same
DE4129090A1 (de) * 1991-09-02 1993-03-04 Rueggeberg August Fa Schleifscheibe
US5316812A (en) 1991-12-20 1994-05-31 Minnesota Mining And Manufacturing Company Coated abrasive backing
US5562745A (en) 1994-03-16 1996-10-08 Minnesota Mining And Manufacturing Company Abrasive articles, methods of making abrasive articles, and methods of using abrasive articles
US6280309B1 (en) * 1995-10-19 2001-08-28 Norton Company Accessories and attachments for angle grinder
EP0909612B1 (fr) * 1997-10-16 2002-06-19 August Rüggeberg GmbH &amp; Co. Disque abrasif
DE10106631A1 (de) * 2001-02-12 2002-08-22 Rueggeberg August Gmbh & Co Tragteller für Fächerschleifscheibe und Fächerschleifscheibe
US6530830B2 (en) 2001-03-19 2003-03-11 3M Innovative Properties Company Sanding disc
US6863596B2 (en) * 2001-05-25 2005-03-08 3M Innovative Properties Company Abrasive article
US6723142B2 (en) * 2002-06-05 2004-04-20 Tepco Ltd. Preformed abrasive articles and method for the manufacture of same
TWI238753B (en) * 2002-12-19 2005-09-01 Miyanaga Kk Diamond disk for grinding
CA2457249A1 (fr) * 2003-12-09 2005-06-09 Suntek Industries Ltd. Methode de preparation de disques a abrasif applique
DE102004001546A1 (de) * 2004-01-10 2005-08-04 August Rüggeberg Gmbh & Co. Kg Werkzeug
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DE102008023946B3 (de) * 2008-05-16 2009-04-02 August Rüggeberg Gmbh & Co. Kg Schrupp-Schleifscheibe
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US8430725B2 (en) * 2008-12-19 2013-04-30 Jovan Pajovic Abrasive disc construction

Also Published As

Publication number Publication date
EP2286959A2 (fr) 2011-02-23
RU2010132291A (ru) 2012-02-10
EP2286959A3 (fr) 2011-03-16
TW201111108A (en) 2011-04-01
CN101992429B (zh) 2015-04-08
BRPI1003157A2 (pt) 2012-04-10
ZA201005883B (en) 2013-08-28
AU2010212470A1 (en) 2011-03-10
CA2715530A1 (fr) 2011-02-22
CN101992429A (zh) 2011-03-30
US20110045750A1 (en) 2011-02-24

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