US20110045750A1 - Rough grinding tool - Google Patents

Rough grinding tool Download PDF

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Publication number
US20110045750A1
US20110045750A1 US12/861,670 US86167010A US2011045750A1 US 20110045750 A1 US20110045750 A1 US 20110045750A1 US 86167010 A US86167010 A US 86167010A US 2011045750 A1 US2011045750 A1 US 2011045750A1
Authority
US
United States
Prior art keywords
grinding
radius
tool according
fiber
grinding tool
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.)
Abandoned
Application number
US12/861,670
Other languages
English (en)
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
Assigned to AUGUST RUEGGEBERG GMBH & CO. KG reassignment AUGUST RUEGGEBERG GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HUTH, NICOLAS, STUCKENHOLZ, BERND, DR.
Publication of US20110045750A1 publication Critical patent/US20110045750A1/en
Abandoned legal-status Critical Current

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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 rough grinding tool
  • Fiber grinding discs of this type are configured flexibly and are detachably attached to the support plate.
  • the fastening on the support plate takes place by means of a flange that can be screwed on in the bend region of the fiber grinding disc.
  • the service life of the fiber grinding disc is short, for example only about 1 minute.
  • the grinding grain of the fiber grinding disc shows the first signs of wear, so the surface of the workpiece to be machined no longer becomes completely uniform. The fiber grinding disc is therefore already exchanged after this time.
  • Grinding means on a base such as are generally conventional, are known from EP 0 750 539 B1 and EP 0 617 652 B1, which thus consist of a resiliently flexible disc being used as a carrier or base, on which a grinding grain is fastened by means of a synthetic resin.
  • So-called fan grinding discs are known from DE 10 2006 010 366 B3 and DE 90 17 256 U1 in which the grinding plates are glued onto a carrier in the conventional manner.
  • the invention is based on the object of configuring a rough grinding tool of the generic type in such a way that it has high service lives with a simple and economical structure.
  • the fiber disc consists of vulcanized fiber, a material, which has been known for one and a half centuries and is produced on the basis of cotton fibers. Surprisingly, it has also been found that the rough grinding tool is far superior to conventional rough grinding discs both with regard to the machined mass per time unit and also with regard to the total mass that can be machined. This applies, in particular, if ceramic grain is used as the grinding means.
  • the grinding disc with the grinding means covering is slightly convexly curved toward the grinding side.
  • rough grinding discs of this type in other words rough grinding tools, are used on hand-held grinding machines, an exact angle position of the grinding tool compared to the area to be ground is generally not adhered to during use.
  • the slight curvature leads to the fact that no high local surface pressures between the grinding disc and the workpiece to be machined, resulting in a corresponding tearing of the grinding grain, occur. This leads to a substantial increase in the service time or the machining output.
  • the grinding region is divided into a main grinding region and a radially outer smaller outer grinding region, the outer grinding region being even more strongly curved toward the rear of the grinding tool, the risk of the detachment of the grinding disc from the support plate is further reduced.
  • the grinding tool may also be used herewith briefly for face grinding.
  • FIG. 1 shows a first embodiment of a rough grinding tool according to the invention in a rear view according to the viewing arrow I in FIG. 3 ,
  • FIG. 2 shows a plan view of the grinding side of the rough grinding tool according to the viewing arrow II in FIG. 3 ,
  • FIG. 3 shows a cross section through the rough grinding tool along the section line III-III in FIG. 1 ,
  • FIG. 4 shows a cross section through a second embodiment of a rough grinding tool according to the invention
  • FIG. 5 shows a cross section through a third embodiment of a rough grinding tool according to the invention.
  • FIG. 6 shows a hand grinding machine with a rough grinding tool according to the invention during grinding use.
  • the rough grinding tool shown in FIGS. 1 to 3 has a support plate 1 , which consists in the conventional manner of glass fibers which are compressed and impregnated with phenol resin and which, in the conventional manner, has a flat, annular clamping region 2 , in which an also circular opening 3 is configured to receive a drive shaft of a drive machine.
  • the annular clamping region 2 surrounding the opening 3 is provided with a metal ring 5 on the rear of the support plate 1 remote from a grinding side 4 .
  • a bend region 6 adjoins the clamping region 2 and is also annular and rises radially with respect to the axis 7 of the support plate 1 toward the grinding side 4 .
  • An annular grinding region 8 adjoins the bend region 6 and is inclined radially with respect to the axis 7 counter to the bend region 6 , and specifically radially with respect to the axis 7 outwardly away from the grinding side 4 .
  • This configuration of a support plate 1 is generally known and conventional.
  • a fiber grinding disc 9 is fastened to the grinding side 4 .
  • This is a so-called grinding means on a base, which consists of a fiber disc 10 as the carrier or base and a resin-bound grinding means covering 11 .
  • the fiber disc 10 consists of vulcanized fiber, being a bound, compressed material based on cotton fibers.
  • the grinding means covering 11 is formed by ceramic grain 11 . 1 , which is produced from a microgranulate by sintering. Micro granulates break out of the respective grain individually, so the service life of the ceramic grain 11 . 1 in comparison to conventional grinding means is thereby considerably increased.
  • the resin-bound grinding means covering 11 is connected in the conventional manner to the fiber disc 10 .
  • the fiber disc 10 of the fiber grinding disc 9 is connected to the grinding side 4 of the support plate 1 by means of an adhesive layer 12 .
  • the radius R 1 of the support plate 1 is slightly smaller than the radius R 9 of the fiber grinding disc 9 , without the fiber grinding disc 9 projecting radially with respect to the axis 7 over the outer edge 13 of the support plate 1 .
  • the bend region 6 at the transition to the main grinding region 8 , has a radius R 6 from the axis 7 .
  • the main grinding region 8 has a radius R 8 from the axis 7 which is equal to the radius R 9 of the fiber grinding disc 9 .
  • the use of the grinding tool takes place in the conventional manner at an angle to the axis 7 .
  • the support plate 1 ′ consists of a glass fabric impregnated with epoxy resin. It has—as in the embodiment according to FIGS. 1 to 3 —a constant thickness h.
  • the also annular clamping region 2 ′ is also configured with a circular opening 3 ′ to receive a drive shaft of a drive machine.
  • the flat clamping region 2 ′ surrounding the opening 3 ′, in this embodiment, is not reinforced with a metal ring.
  • the bend region 6 ′ adjoining the clamping region 2 ′ is also annular and rises radially with respect to the axis 7 ′ of the support plate 1 ′ toward the grinding side 4 ′.
  • the flat clamping region 2 ′ passes with a radius of curvature r 2 ′ into the bend region 6 ′.
  • the bend region 6 ′ is in turn adjoined by an annular main grinding region 8 ′, which is inclined radially with respect to the axis 7 ′ counter to the bend region 6 ′, specifically radially with respect to the axis 7 ′ outwardly away from the grinding side 4 ′. Viewed outwardly, from the axis 7 ′, the grinding region 8 ′ is thus inclined away from the grinding side 4 ′.
  • a fiber grinding disc 9 ′ is also fastened to the grinding side 4 ′ of the support plate 1 ′.
  • This is a so-called grinding means on a base, which consists of a fiber disc 10 ′ as a support or base and a resin-bound grinding means covering 11 ′.
  • the fiber grinding disc 9 ′ is thus a grinding disc, which is independent per se, which could be used, as was described above with regard to the prior art according to US 2007-0010184-A1. It is flexible, in other words bendable.
  • the structure of the fiber grinding disc 9 ′ corresponds to that already described above with respect to FIGS. 1 to 3 .
  • the grinding means covering 11 ′ in other words has ceramic grain 11 . 1 °.
  • the fiber disc 10 ′ of the fiber grinding disc 9 ′ is also connected to the support plate 1 ′ by means of an adhesive layer 12 ′
  • the bend region 6 ′ passes into the grinding region 8 ′ with a radius of curvature r 6 ′.
  • the main grinding region 8 ′ itself is also curved, specifically slightly convexly to the grinding side 4 ′ with a radius of curvature r 8 ′.
  • the outer grinding region 15 ′ adjoining the main grinding region 8 ′ is inclined away, viewed radially outwardly, from the grinding side 4 ′ and convexly curved with respect to the grinding side 4 ′ with a radius of curvature r 15 ′.
  • the curvatures with the radii of curvature r 6 ′, r 8 ′ and r 15 ′ are configured convexly to the grinding side 4 ′; the reason for this is that the use of the rough grinding tool in the conventional manner takes place at an angle to the axis 7 ′.
  • the fiber grinding disc 9 ′ has a radius R 9 ′ from the axis 7 ′.
  • the bend region 6 ′ at the transition to the main grinding region 8 ′ has a radius R 6 ′ from the axis 7 ′.
  • the main grinding region 8 ′ has a radius R 8 ′ from the axis 7 ′, which is only equal to the radius R 9 ′ of the fiber grinding disc 9 ′ if no separate more strongly curved outer grinding region 15 ′ is present.
  • the radii R 6 ′ and R 8 ′ the following applies in relation to the radius R 9 ′:
  • the embodiment according to FIG. 5 differs from that according to FIG. 4 in that the support plate 1 ′′ has a radially outwardly increasing resilience, in other words a lower rigidity or greater flexibility. All the parts or regions coinciding with FIG. 4 are therefore designated by the same reference numerals and all the similar parts or regions are in each case designated by the same reference numerals as were used in FIG. 4 , supplemented by a superscripted double dash, without another description being necessary.
  • the support plate 1 ′′ has a plurality of respective annular portions 16 , 17 or 18 , which have a different, radially outwardly decreasing thickness.
  • the portion 16 extends approximately to the transition from the bend region 6 ′ into the main grinding region 8 ′′; it has the thickness h here.
  • the annular portion 17 adjoining this radially outwardly extends radially up to in front of the outer grinding region 15 ′′.
  • the portion 17 has a thickness h′; the outer portion 18 has a thickness h′′, wherein h>h′>h′′.
  • a stepped configuration according to FIG. 5 it is to be assumed that at least two portions of this type and at most five portions of this type are provided. The above relationships apply to the radii R 6 ′, R 8 ′′ and R 9 ′.
  • the use of the rough grinding tool according to the invention on hand grinding machines 19 emerges from FIG. 6 .
  • the rough grinding tool is placed on an output shaft 20 of the hand grinding machine 19 , which is placed through the opening 3 of the grinding tool, so the axis 7 coincides with the centre axis of the output shaft 20 .
  • the fastening of the grinding tool on the output shaft 20 takes place by means of a clamping nut 21 .
  • the convex curvature of the main grinding region 8 ′′ toward the grinding side 4 ′ means that during surface grinding of workpieces 22 , in other words, in the main use region of grinding tools of this type, even with unavoidable oscillating movements of the grinding tool, a uniform load of the grinding means covering 11 ′ occurs, in other words, no extreme surface pressures occur. In these rough grinding tools always used on hand grinding machines, this leads to lower wear and therefore a higher service time and a higher removal output of the grinding disc. This advantageous effect is further reinforced by the outwardly increasing resilience of the grinding tool according to FIG. 5 .
  • the greater curvature in the outer grinding region 15 ′ or 15 ′′ means that when the outer edge 13 ′ or 13 ′′ of the grinding disc strikes against an object, no detachment of the fiber grinding disc 9 ′ together with the grinding means covering 11 from the support plate ′ or 1 ′′ takes place.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
US12/861,670 2009-08-22 2010-08-23 Rough grinding tool Abandoned US20110045750A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102009038583.5 2009-08-22
DE200910038583 DE102009038583A1 (de) 2009-08-22 2009-08-22 Schleif-Werkzeug
DE102010029553.1 2010-06-01
DE201010029553 DE102010029553A1 (de) 2010-06-01 2010-06-01 Schleif-Werkzeug

Publications (1)

Publication Number Publication Date
US20110045750A1 true US20110045750A1 (en) 2011-02-24

Family

ID=43216919

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/861,670 Abandoned US20110045750A1 (en) 2009-08-22 2010-08-23 Rough grinding tool

Country Status (9)

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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160052102A1 (en) * 2013-04-04 2016-02-25 3M Innovative Properties Company Pad for supporting abrasive disc
KR101862371B1 (ko) * 2011-09-19 2018-05-29 주식회사 디어포스 그라인더용 친환경 연마제품 및 그 제조방법
US10046439B2 (en) 2013-11-11 2018-08-14 Dipl.-Ing. Guenter Wendt Gmbh Vulcanized fiber grinding tool
US20220080555A1 (en) * 2020-09-16 2022-03-17 ÜÇER ZIMPARA TASI SAN.ve TIC.LTD.STI. Bilateral abrasive disc pad
CN115431133A (zh) * 2021-06-03 2022-12-06 宾仁善 紧贴效率高的电动研磨机可拆卸用研磨盘

Families Citing this family (3)

* 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.
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
EP3504028B1 (de) * 2016-08-23 2021-03-17 August Rüggeberg GmbH & Co. KG Schrupp-schleifwerkzeug

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US3889430A (en) * 1972-05-17 1975-06-17 S P A M Abrasive tools
US5273558A (en) * 1991-08-30 1993-12-28 Minnesota Mining And Manufacturing Company Abrasive composition and articles incorporating same
US5316812A (en) * 1991-12-20 1994-05-31 Minnesota Mining And Manufacturing Company Coated abrasive backing
US5516326A (en) * 1991-09-02 1996-05-14 August Ruggeberg Abrasive wheel
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
US6071185A (en) * 1997-10-16 2000-06-06 August Ruggeberg Gmbh & Co. Abrasive wheel
US20020187737A1 (en) * 2001-02-12 2002-12-12 August Ruggeberg Gmbh & Co. Supporting disk for a surface grinding wheel and surface grinding wheel
US20030226318A1 (en) * 2002-06-05 2003-12-11 Grahame Emerson Preformed abrasive articles and method for the manufacture of same
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US20100159813A1 (en) * 2008-12-19 2010-06-24 Jovan Pajovic Abrasive Disc Construction
US20110065369A1 (en) * 2008-05-16 2011-03-17 August Rüggeberg Gmbh & Co. Kg Roughing-grinding disc

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DE9017256U1 (de) 1990-12-21 1991-03-14 Wendt, Günther, 5227 Windeck Fächerstirnschleifscheibe
US6280309B1 (en) * 1995-10-19 2001-08-28 Norton Company Accessories and attachments for angle grinder
US6530830B2 (en) 2001-03-19 2003-03-11 3M Innovative Properties Company Sanding disc
TWI238753B (en) * 2002-12-19 2005-09-01 Miyanaga Kk Diamond disk for grinding
CA2457249A1 (en) * 2003-12-09 2005-06-09 Suntek Industries Ltd. Preparation of coated abrasive disk
KR100802512B1 (ko) * 2006-09-21 2008-02-12 주식회사 썬텍인더스트리 연마 디스크 및 그의 제조방법

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US3889430A (en) * 1972-05-17 1975-06-17 S P A M Abrasive tools
US5273558A (en) * 1991-08-30 1993-12-28 Minnesota Mining And Manufacturing Company Abrasive composition and articles incorporating same
US5516326A (en) * 1991-09-02 1996-05-14 August Ruggeberg Abrasive wheel
US5316812A (en) * 1991-12-20 1994-05-31 Minnesota Mining And Manufacturing Company Coated abrasive backing
US5417726A (en) * 1991-12-20 1995-05-23 Minnesota Mining And Manufacturing Company Coated abrasive backing
US5580634A (en) * 1991-12-20 1996-12-03 Minnesota Mining And Manufacturing Company Coated abrasive backing
US5849646A (en) * 1991-12-20 1998-12-15 Minnesota Mining & 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
US6071185A (en) * 1997-10-16 2000-06-06 August Ruggeberg Gmbh & Co. Abrasive wheel
US6786812B2 (en) * 2001-02-12 2004-09-07 August Rüggeberg GmbH & Co. Supporting disk for a surface grinding wheel and surface grinding wheel
US20020187737A1 (en) * 2001-02-12 2002-12-12 August Ruggeberg Gmbh & Co. Supporting disk for a surface grinding wheel and surface grinding wheel
US6863596B2 (en) * 2001-05-25 2005-03-08 3M Innovative Properties Company Abrasive article
US20030226318A1 (en) * 2002-06-05 2003-12-11 Grahame Emerson Preformed abrasive articles and method for the manufacture of same
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US20090068938A1 (en) * 2006-03-03 2009-03-12 Lukas-Erzett Vereinigte Schleif-Und Fraswerkzeugfabriken Gmbh & Co. Kg Grinding Lamella and Grinding Wheel Holding Same
US20110065369A1 (en) * 2008-05-16 2011-03-17 August Rüggeberg Gmbh & Co. Kg Roughing-grinding disc
US20090305619A1 (en) * 2008-06-04 2009-12-10 August Ruggeberg Gmbh & Co., Kg Fan-type grinding wheel
US20100159813A1 (en) * 2008-12-19 2010-06-24 Jovan Pajovic Abrasive Disc Construction

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101862371B1 (ko) * 2011-09-19 2018-05-29 주식회사 디어포스 그라인더용 친환경 연마제품 및 그 제조방법
US20160052102A1 (en) * 2013-04-04 2016-02-25 3M Innovative Properties Company Pad for supporting abrasive disc
US10335917B2 (en) * 2013-04-04 2019-07-02 3M Innovative Properties Company Pad for supporting abrasive disc
US10046439B2 (en) 2013-11-11 2018-08-14 Dipl.-Ing. Guenter Wendt Gmbh Vulcanized fiber grinding tool
US20220080555A1 (en) * 2020-09-16 2022-03-17 ÜÇER ZIMPARA TASI SAN.ve TIC.LTD.STI. Bilateral abrasive disc pad
CN115431133A (zh) * 2021-06-03 2022-12-06 宾仁善 紧贴效率高的电动研磨机可拆卸用研磨盘
US20220388123A1 (en) * 2021-06-03 2022-12-08 Insun BIN Detachable grinding disk for electric grinder with high adhesion efficiency

Also Published As

Publication number Publication date
AU2010212470A1 (en) 2011-03-10
BRPI1003157A2 (pt) 2012-04-10
CN101992429B (zh) 2015-04-08
EP2286959A3 (de) 2011-03-16
RU2010132291A (ru) 2012-02-10
CN101992429A (zh) 2011-03-30
TW201111108A (en) 2011-04-01
CA2715530A1 (en) 2011-02-22
EP2286959B1 (de) 2014-05-07
EP2286959A2 (de) 2011-02-23
ZA201005883B (en) 2013-08-28

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