EP2783794B1 - Meule et procédé de renforcement de celle-ci - Google Patents

Meule et procédé de renforcement de celle-ci Download PDF

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Publication number
EP2783794B1
EP2783794B1 EP13161044.6A EP13161044A EP2783794B1 EP 2783794 B1 EP2783794 B1 EP 2783794B1 EP 13161044 A EP13161044 A EP 13161044A EP 2783794 B1 EP2783794 B1 EP 2783794B1
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
bore
potting compound
plastic
poured
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.)
Active
Application number
EP13161044.6A
Other languages
German (de)
English (en)
Other versions
EP2783794A1 (fr
Inventor
Florian Hänni
Marin Pavlovic
Thomas Sigrist
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.)
Reishauer AG
Original Assignee
Reishauer AG
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 Reishauer AG filed Critical Reishauer AG
Priority to EP13161044.6A priority Critical patent/EP2783794B1/fr
Priority to KR1020157029941A priority patent/KR102204558B1/ko
Priority to PCT/EP2014/052211 priority patent/WO2014154386A1/fr
Priority to JP2016504521A priority patent/JP6411453B2/ja
Priority to CN201480018362.1A priority patent/CN105263675B/zh
Priority to US14/779,049 priority patent/US9839990B2/en
Publication of EP2783794A1 publication Critical patent/EP2783794A1/fr
Application granted granted Critical
Publication of EP2783794B1 publication Critical patent/EP2783794B1/fr
Active 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
    • B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
    • B24D3/348—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties utilised as impregnating agent for porous abrasive bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0027—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by impregnation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/02—Wheels in one piece
    • B24D5/04—Wheels in one piece with reinforcing means

Definitions

  • the invention relates to a method for reinforcing a grinding wheel according to the preamble of claim 1.
  • Such grinding wheels are used, for example, in the machining of gears for car transmissions.
  • it is endeavored to steadily increase the cutting speeds in continuous generating grinding.
  • safety standards must be adhered to, according to which the permissible cutting speed must be in a specific relationship to the blasting speed of the grinding wheel.
  • a disadvantage of this device is the relatively complicated structure and the risk of breakage of the abrasive body during the tensioning of the same between these flanges.
  • the risk that this is not uniform, but in the lower part by gravity creates a higher density.
  • synthetic resins also uneconomical epoxy resins are used because of the high cost.
  • the publication DE-A-1 261 772 refers to a method for making a reinforcing hub inside a grinding wheel by centrifugal casting, in which this reinforcing hub merges homogeneously into the grinding wheel.
  • the invention is the object of the invention to provide a method for reinforcing a grinding wheel of the type mentioned that an increase in the blasting speed during operation of the grinding wheel is made possible.
  • the grinding wheel according to the invention with preferably horizontally oriented axis of rotation is rotated and cast, for example, 400 rpm (revolutions per minute) a certain amount potting compound in the hole, wherein by adjusting the spin speed and / or the amount of liquid and the Curing time of the potting compound used, the penetration depth of the adhesive into the grinding wheel and the thickness of the reinforcing ring can be set within certain limits.
  • the invention provides to attach the grinding wheel on the outside sealing elements, which should prevent that the cast-in casting compound runs out laterally uncontrolled.
  • the arrangement according to Fig. 1 shows a grinding wheel 1 of porous ceramic material, wherein it is preferably made of corundum. Of course, instead of corundum other similarly porous structured ceramic materials may be considered.
  • the grinding wheel 1 is provided with a bore 2 in particular for its attachment to a spindle of a machine tool. According to the invention, at least one cast-in plastic material forms both a ring 2a lining the bore 2 and this reinforcing layer 2b in the grinding wheel pores 1 '.
  • the grinding wheel is made of an open to highly porous structure, advantageously with a porosity of over 50 percent by volume.
  • a potting compound is used from a 2-component polyurethane system, which is particularly suitable both in terms of its physical properties and because of its economy potting compound for producing the ring 2a and for filling the disc pores 1 'in Area of the annular reinforcing layer 2b.
  • Other suitable casting compounds can be used.
  • the pouring of the potting compound into the bore 2 of the grinding wheel 1 is effected by means of a casting device, of which only just a feed nozzle 5 is shown, which directs the potting compound in the region of the bore 2.
  • a casting device of which only just a feed nozzle 5 is shown, which directs the potting compound in the region of the bore 2.
  • In order to prevent uncontrolled leakage of the potting compound after the supply line in the bore 2 are on the grinding wheel 1 arranged on the outside sealing elements 8a, 8b provided.
  • the grinding wheel 1 For producing the ring 2 a surrounding the bore 2 as well as the reinforcing layer 2 b in the grinding wheel pores 1 'of the grinding wheel 1, this is rotated by a drive, not shown, about the horizontally oriented axis of rotation 6, while through the casting device with the supply nozzle 5 a certain amount Potting compound is supplied.
  • the grinding wheel 1 rotates at a speed of, for example, 400 rpm (revolutions per minute), wherein the cast-in casting compound penetrates into the pores 1 'of the grinding wheel 1 through the then acting centrifugal force and bonds with its ceramic material.
  • the achievable penetration depth 4 and also the wall thickness 3 of the ring 2a are dependent on the spin speed and the cast amount, as well as the degree of liquid and the curing time of the potting compound used. By varying these sizes, the wall thickness 3 or penetration depth of the potting compound and the thickness of the reinforcing layer 2b can be regulated within certain limits.
  • the cast-in plastic for forming the ring as well as the reinforcing layer in the grinding wheel pores could be formed by a layered casting with different materials of potting or adhesive masses.

Claims (5)

  1. Procédé pour le renforcement d'une meule, de préférence destinée au meulage d'engrenages, avec un alésage (2) servant pour sa fixation, dans lequel un anneau (2a) habillant l'alésage (2) et une couche de renforcement (2b) sont formés dans les pores de la meule par au moins une matière plastique coulée, dans lequel des éléments d'étanchéité (8a, 8b) sont installés sur le côté extérieur de la meule (1) pour empêcher un écoulement incontrôlé de la masse de moulage à couler dans l'alésage (2), caractérisé en ce que l'on met la meule (1) en rotation avec un axe de rotation (6) orienté horizontalement et on coule dans l'alésage (2) une quantité déterminée de masse de moulage sous forme de matière plastique, qui pénètre dans les pores (1') de la meule (1) sous l'effet de la force centrifuge produite et se lie au matériau céramique, dans lequel la meule est fabriquée avec une structure ouverte à hautement poreuse et la matière plastique coulée se compose d'un système polyuréthane à deux ou plusieurs composants.
  2. Procédé selon la revendication 1, caractérisé en ce que l'épaisseur de paroi (3) de l'anneau (2a) et la profondeur de pénétration (4) de la masse de moulage peuvent être réglées en faisant varier la vitesse de rotation, la quantité et le degré de fluidité de la masse de moulage coulée et/ou la durée de durcissement de la masse de moulage utilisée.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'on fait tourner la meule (1) à une vitesse sensiblement constante, de préférence de 400 rpm (révolutions par minute).
  4. Meule, qui est renforcée par le procédé selon l'une quelconque des revendications précédentes 1 à 3, caractérisée en ce que la meule est fabriquée avec une structure ouverte à hautement poreuse et la matière plastique coulée se compose d'un système polyuréthane à deux ou plusieurs composants.
  5. Meule selon la revendication 4, caractérisée en ce que l'épaisseur de paroi (3) de l'anneau (2a) habillant l'alésage (2) et/ou la profondeur de pénétration (4) de la matière plastique dans cette couche de renforcement (2b) peuvent être réglées.
EP13161044.6A 2013-03-26 2013-03-26 Meule et procédé de renforcement de celle-ci Active EP2783794B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP13161044.6A EP2783794B1 (fr) 2013-03-26 2013-03-26 Meule et procédé de renforcement de celle-ci
KR1020157029941A KR102204558B1 (ko) 2013-03-26 2014-02-05 그라인딩 휠 및 이의 보강 방법
PCT/EP2014/052211 WO2014154386A1 (fr) 2013-03-26 2014-02-05 Disque abrasifmeule et procédé de pour la renforcerment de celui-ci
JP2016504521A JP6411453B2 (ja) 2013-03-26 2014-02-05 研削砥石及び該研削砥石を補強する方法
CN201480018362.1A CN105263675B (zh) 2013-03-26 2014-02-05 磨轮以及用于对其进行强化的方法
US14/779,049 US9839990B2 (en) 2013-03-26 2014-02-05 Grinding wheel and method of reinforcing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13161044.6A EP2783794B1 (fr) 2013-03-26 2013-03-26 Meule et procédé de renforcement de celle-ci

Publications (2)

Publication Number Publication Date
EP2783794A1 EP2783794A1 (fr) 2014-10-01
EP2783794B1 true EP2783794B1 (fr) 2017-09-27

Family

ID=47997131

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13161044.6A Active EP2783794B1 (fr) 2013-03-26 2013-03-26 Meule et procédé de renforcement de celle-ci

Country Status (6)

Country Link
US (1) US9839990B2 (fr)
EP (1) EP2783794B1 (fr)
JP (1) JP6411453B2 (fr)
KR (1) KR102204558B1 (fr)
CN (1) CN105263675B (fr)
WO (1) WO2014154386A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2959779C (fr) 2016-03-04 2019-06-11 The Libman Company Brosse de toilette de style ciseaux
CN107225517B (zh) * 2017-05-26 2019-06-14 江苏锋芒复合材料科技集团有限公司 一种防漏防水型环保磨砂盘及其制备方法
CN113967879B (zh) * 2021-11-04 2022-12-27 东阳市灿红磁业有限公司 一种磨削磨轮和磨削装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH489334A (de) * 1968-10-11 1970-04-30 Impregnated Diamond Prod Ltd Diamantschleifwerkzeug und Verfahren zu dessen Herstellung
US3526063A (en) * 1965-03-08 1970-09-01 Norton Co Integral mounting means and reinforcement for grinding wheels

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US1884279A (en) * 1931-08-29 1932-10-25 Hans P Scheel Pulp grinding stone
US2004630A (en) * 1932-12-06 1935-06-11 Krug Carl Grinding disk
US2006308A (en) * 1933-07-13 1935-06-25 Norton Co Grinding wheel
US2094556A (en) * 1935-10-25 1937-09-28 Norton Co Grinding wheel
DE1261772B (de) * 1955-05-02 1968-02-22 Minnesota Mining & Mfg Verfahren zur Herstellung einer Verstaerkungsnabe an einer Schleifscheibe mit Kunstharzbindung mittels Schleuderguss
ES352979A1 (es) * 1967-04-28 1970-01-16 Norton Co Procedimiento para fabricar un dispositivo abrasivo perfe- ccionado.
US3939612A (en) * 1971-06-02 1976-02-24 Dresser Industries, Inc. Reinforced grinding wheel
JPS515113Y2 (fr) * 1971-08-07 1976-02-12
DE2421260A1 (de) * 1973-05-14 1974-12-05 Karlstad Mekaniska Ab Wellenanordnung zum befestigen eines schleifsteins in zellulose-schleifmaschinen
JPS5048292U (fr) * 1973-08-28 1975-05-13
SE401472B (sv) * 1975-07-23 1978-05-16 Slipmaterial Naxos Ab Slipskiva bestaende av tva eller flera hopfogade slipelement
US4137516A (en) * 1977-10-31 1979-01-30 Carnegie-Mellon University Grinding wheel crack detector
US5343656A (en) * 1989-08-01 1994-09-06 Hurth Maschinen Und Werkzeuge G.M.B.H. Grinding tool and the like made of a ceramic material coated with extremely hard abrasive granules
FR2718379B3 (fr) * 1994-04-12 1996-05-24 Norton Sa Meules super abrasives.
JPH08174430A (ja) * 1994-12-27 1996-07-09 Tone Corp 鋳鉄管内面粗研削仕上げ用電着砥石および その取付け構造
JP2000153464A (ja) 1998-11-16 2000-06-06 Kyowa Rejinasu Kk 砥石及び砥石の製造方法
JP2001205566A (ja) * 2000-01-26 2001-07-31 Noritake Co Ltd 樹脂含浸ビトリファイド砥石およびその製造方法
US6257963B1 (en) 2000-05-12 2001-07-10 Reishauer Ag Grinding worm for the continuous generating grinding of gear wheels
FR2811599B1 (fr) * 2000-07-11 2003-01-17 Essilor Int Procede pour ameliorer la precision d'une operation de chanfreinage appliquee a un verre de lunettes, et outil de chanfreinage correspondant
JP2003039331A (ja) * 2001-08-01 2003-02-13 Noritake Co Ltd 樹脂製コア部を有する砥石車とその製造方法及び再利用方法
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CN202151831U (zh) * 2011-01-04 2012-02-29 李海锋 一种新型砂轮
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US3526063A (en) * 1965-03-08 1970-09-01 Norton Co Integral mounting means and reinforcement for grinding wheels
CH489334A (de) * 1968-10-11 1970-04-30 Impregnated Diamond Prod Ltd Diamantschleifwerkzeug und Verfahren zu dessen Herstellung

Also Published As

Publication number Publication date
CN105263675B (zh) 2018-04-03
JP2016514623A (ja) 2016-05-23
WO2014154386A1 (fr) 2014-10-02
CN105263675A (zh) 2016-01-20
EP2783794A1 (fr) 2014-10-01
US20160158919A1 (en) 2016-06-09
KR20150133783A (ko) 2015-11-30
US9839990B2 (en) 2017-12-12
JP6411453B2 (ja) 2018-10-24
KR102204558B1 (ko) 2021-01-19

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