FR2704473A3 - Abrasive grinding wheel with ventilation holes - Google Patents

Abrasive grinding wheel with ventilation holes Download PDF

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Publication number
FR2704473A3
FR2704473A3 FR9404942A FR9404942A FR2704473A3 FR 2704473 A3 FR2704473 A3 FR 2704473A3 FR 9404942 A FR9404942 A FR 9404942A FR 9404942 A FR9404942 A FR 9404942A FR 2704473 A3 FR2704473 A3 FR 2704473A3
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FR
France
Prior art keywords
grinding wheel
ventilation holes
wheel
grinding
pass
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.)
Granted
Application number
FR9404942A
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French (fr)
Other versions
FR2704473B3 (en
Inventor
Silvioli Giovanni
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.)
CAMFART Srl
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CAMFART Srl
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Filing date
Publication date
Application filed by CAMFART Srl filed Critical CAMFART Srl
Publication of FR2704473A3 publication Critical patent/FR2704473A3/en
Application granted granted Critical
Publication of FR2704473B3 publication Critical patent/FR2704473B3/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
    • B24B7/167—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings end faces coil springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
    • B24B7/17—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings for simultaneously grinding opposite and parallel end faces, e.g. double disc grinders
    • 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
    • B24D7/10—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 with cooling provisions

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

Abstract

The present utility mark relates to an abrasive grinding wheel intended particularly, but not exclusively, for spring grinding machining, in which the body (11) is equipped with a plurality of ventilation holes (15) which pass right through it in the direction of its thickness and are intended to have flows of air passing through them for cooling the grinding wheel and the workpiece.

Description

Le présent modèle d'utilité concerne les meules abrasives à enduit organique ou inorganique, plus particulièrement, mais non nécessairement, les meules utilisables pour l'opération de rectification des ressorts. The present utility model relates to abrasive wheels with an organic or inorganic coating, more particularly, but not necessarily, the wheels usable for the spring grinding operation.

Une telle opération de rectification s'effectue habituellement en faisant passer les ressorts entre les faces planes en saillie de deux meules opposées, appliquées par des moyens mécaniques ou chimiques sur des supports porte-meule respectifs. Les meules utilisées peuvent etre de divers types, avec ou sans trou central, avec ou sans alvéoles ouvertes vers la superficie de travail de la meule, avec ou sans écrous incorporés, avec ou sans fonds facilitant l'application aux supports portemeule. Such a rectification operation is usually carried out by passing the springs between the planar projecting faces of two opposite grinding wheels, applied by mechanical or chemical means to respective grinding wheel supports. The grinding wheels used can be of various types, with or without central hole, with or without cells open towards the working surface of the grinding wheel, with or without incorporated nuts, with or without bottoms facilitating the application to the supports.

L'usinage des ressorts génère toutefois de la chaleur qui peut amener une. surchauffe des meules ainsi que des ressorts, avec effet de polissage sans enlèvement de matière et à la perte d'efficacité avec brûlure consécutive des pièces à usiner. Pour éviter toute surchauffe, on a actuellement recours habituellement à une ventilation des meules réalisée au moyen d'un courant d'air insufflé sur les surfaces actives des meules et sur les pièces (les ressorts) orienté dans des directions variables au moyen d'aspirateurs et/ou de ventilateurs prévus à cet effet. The machining of the springs, however, generates heat which can lead to. overheating of the grinding wheels as well as of the springs, with a polishing effect without removing material and loss of efficiency with subsequent burning of the workpieces. To avoid overheating, ventilation of the grinding wheels is currently usually carried out by means of a blown air flow on the active surfaces of the grinding wheels and on the parts (springs) oriented in variable directions by means of vacuum cleaners. and / or fans provided for this purpose.

Toutefois, on a constaté qu'une telle méthode d'aération des meules n'est pas toujours suffisante pour éviter la surchauffe, car le courant d'air se limite à lécher et refroidir uniquement les surfaces des meules. However, it has been found that such a method of aeration of the grinding wheels is not always sufficient to avoid overheating, since the air flow is limited to licking and cooling only the surfaces of the grinding wheels.

Ceci même lorsque les meules sont munies d'alvéoles du fait qu'à l'intérieur de celles-ci, de l'air peut stagner et peut subir lui-même une surchauffe, ce qui interdit ou au moins limite la dissipation de la chaleur accumulée dans le corps des meules.This even when the grinding wheels are provided with air cells because inside of them, air can stagnate and can itself suffer overheating, which prohibits or at least limits the dissipation of heat accumulated in the body of the grinding stones.

La présente invention vise à remédier à ces inconvénients et désavantages par une aération plus efficace des meules obtenue gracie à une configuration originale de ces meules. The present invention aims to remedy these drawbacks and disadvantages by more efficient ventilation of the grinding wheels obtained thanks to an original configuration of these grinding wheels.

En effet, l'objet de la présente invention est de proposer une meule abrasive qui puisse être traversée de part en part par des flux d'air en vue d'un refroidissement effectif et global de son corps, ainsi que de la pièce à usiner, afin d'obtenir une efficacité plus grande et réduire les problèmes de surchauffe de la meule et des pièces à usiner. Indeed, the object of the present invention is to provide an abrasive wheel which can be traversed right through by air flows for effective and overall cooling of its body, as well as of the workpiece , in order to obtain greater efficiency and reduce the problems of overheating of the grinding wheel and the workpieces.

A cette fin, la meule proposée ici est munie d'une pluralité de trous d'aération qui traversent le corps de la meule sensiblement, mais non obligatoirement, en direction parallèle de son axe. Ces trous passants augmentent les surfaces consacrées à l'échange thermique et permettent un fractionnement du courant d'air de refroidissement en une pluralité de flux d'air en vue d'une dissipation plus intense et plus sûre-de la chaleur, y compris à l'intérieur du corps. Ces flux d'air concernent, en - outre, la pièce , à usiner en la refroidissant également au niveau de la zone d'usinage.  To this end, the grinding wheel proposed here is provided with a plurality of ventilation holes which pass through the body of the grinding wheel substantially, but not necessarily, in the direction parallel to its axis. These through holes increase the areas devoted to heat exchange and allow the cooling air stream to be split into a plurality of air streams for more intense and safer dissipation of heat, including inside the body. These air flows also concern the part to be machined by cooling it also in the machining zone.

Un exemple purement indicatif de réalisation pratique de la meule en question est représenté sur les dessins annexés sur lesquels
la figure 1 montre une vue en perspective de la meule ; et
la figure 2 montre l'une de ses sections transversales.A purely indicative example of practical realization of the grinding wheel in question is shown in the accompanying drawings in which
Figure 1 shows a perspective view of the grinding wheel; and
Figure 2 shows one of its cross sections.

La meule comprend essentiellement un corps circulaire 11 fixé de manière connue sur un porte-meule 12. Si on le souhaite, le corps de la meule 11 peut être muni d'un trou central 13 et/ou d'alvéoles ou d'encoches 14 ouvertes vers la superficie frontale active de la meule. The grinding wheel essentially comprises a circular body 11 fixed in a known manner to a grinding wheel holder 12. If desired, the body of the grinding wheel 11 can be provided with a central hole 13 and / or cells or notches 14 open towards the active frontal surface of the grinding wheel.

Toutefois, conformément à la présente invention, dans le corps de la meule 11 ont été pratiqués des trous d'aération passants 15 qui peuvent être mélangés aux alvéoles 14 en cas de présence de ces dernières. However, in accordance with the present invention, in the body of the grinding wheel 11 are provided pass-through ventilation holes 15 which can be mixed with the cells 14 in the presence of the latter.

Lesttrous passants 15, dont le nombre peut varier à volonté selon les besoins, traversent le corps de meule 11 de part en part en direction de son épaisseur et seront disposés correctement pour permettre le passage de l'air de refroidissement à travers le porte-meule, lequel sera avantageusement configuré pour transporter l'air vers les trous 15 qui partent d'un trou central. The through loops 15, the number of which can vary as desired according to the needs, pass through the body of the grinding wheel 11 from side to side in the direction of its thickness and will be arranged correctly to allow the passage of the cooling air through the grinding wheel , which will advantageously be configured to transport air to the holes 15 which leave from a central hole.

L'air de refroidissement peut donc être insufflé au niveau du-porte-meule, selon les flèches A de la figure 2, et sera obligé de passer dans les trous 15, donc de traverser le corps de meule 11 en sortant en direction de la surface active dans le sens des flèches B, avec les résultats et avantages indiqués ci-dessus. The cooling air can therefore be blown in at the wheel holder, according to the arrows A in FIG. 2, and will be forced to pass through the holes 15, therefore to pass through the body of the wheel 11 while exiting in the direction of the active surface in the direction of arrows B, with the results and advantages indicated above.

Dans certains cas, l'air de refroidissement pourrait également être aspiré au niveau du porte-meule, ' créant ainsi une ventilation forcée qui traverserait toujours le corps de la meule, ce qui présenterait les avantages décrits ci-dessus.  In some cases, cooling air could also be drawn in from the grinding wheel holder, thereby creating forced ventilation which would always pass through the body of the grinding wheel, which would have the advantages described above.

Claims (3)

REVENDICATIONS 1. Meule abrasive avec enduit organique ou inorganique, servant en particulier, mais non exclusivement, à des usinages de rectification de ressorts, caractérisée en ce que son corps (11) est muni d'une pluralité de trous d'aération (15) le traversant de part en part dans des directions sensiblement mais non obligatoirement parallèles à l'axe dudit corps et destinés à etre traversés par des flux d'air de refroidissement de la meule et de la pièce à usiner. 1. Abrasive wheel with organic or inorganic coating, serving in particular, but not exclusively, for spring grinding operations, characterized in that its body (11) is provided with a plurality of ventilation holes (15) the traversing right through in directions substantially but not necessarily parallel to the axis of said body and intended to be traversed by air flows for cooling the grinding wheel and the workpiece. 2. Meule abrasive selon la revendication 1, dans laquelle ledit corps (11) présente au moins un trou central (13) et/ou des alvéoles ou encoches (14) ouvertes vers la surface de travail de la meule, et dans laquelle lesdits trous d'aération passants (15) se mélangent auxdites alvéoles. 2. Abrasive wheel according to claim 1, in which said body (11) has at least one central hole (13) and / or cells or notches (14) open towards the working surface of the wheel, and in which said holes pass-through ventilation (15) are mixed with said cells. 3. Meule abrasive selon la revendication 1 ou 2, dans laquelle lesdits trous d'aération passants (15) sont correctement disposés pour permettre le passage de l'air de refroidissement à travers le porte-meule.  3. An abrasive wheel according to claim 1 or 2, wherein said pass-through ventilation holes (15) are properly arranged to allow the passage of cooling air through the wheel holder.
FR9404942A 1993-04-26 1994-04-25 Abrasive wheel with ventilation holes. Expired - Fee Related FR2704473B3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBS930030 IT231237Y1 (en) 1993-04-26 1993-04-26 ABRASIVE WHEEL WITH AERATION HOLES

Publications (2)

Publication Number Publication Date
FR2704473A3 true FR2704473A3 (en) 1994-11-04
FR2704473B3 FR2704473B3 (en) 1995-03-31

Family

ID=11345044

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9404942A Expired - Fee Related FR2704473B3 (en) 1993-04-26 1994-04-25 Abrasive wheel with ventilation holes.

Country Status (3)

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DE (1) DE9406694U1 (en)
FR (1) FR2704473B3 (en)
IT (1) IT231237Y1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0876877A2 (en) * 1997-05-07 1998-11-11 Heinrich Lippert Gmbh Grinding body
EP0956924A1 (en) * 1998-04-17 1999-11-17 OMD Officina Meccanica Domaso S.p.A. Tool carrier for a double-spindle grinding machine
WO2000059681A1 (en) * 1999-04-01 2000-10-12 Koninklijke Philips Electronics N.V. Cmp pad conditioner arrangement and method therefor
WO2000073023A1 (en) * 1999-05-28 2000-12-07 Saint-Gobain Abrasives, Inc. Abrasive tools for grinding electronic components
CN102909666A (en) * 2012-11-20 2013-02-06 无锡威孚精密机械制造有限责任公司 Forced cooling type vertical spring grinding machine grinding wheel device
CN114589637A (en) * 2020-12-04 2022-06-07 台山市兰宝磨具有限公司 Grinding tool with good heat dissipation effect

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014004293A1 (en) * 2014-03-26 2015-10-15 Weha - Ludwig Werwein Gmbh Grinding wheel for processing a stone slab and machine for processing the edge or surface of a stone slab

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0876877A2 (en) * 1997-05-07 1998-11-11 Heinrich Lippert Gmbh Grinding body
EP0876877A3 (en) * 1997-05-07 2001-08-29 Lippert-Unipol GmbH Grinding body
EP0956924A1 (en) * 1998-04-17 1999-11-17 OMD Officina Meccanica Domaso S.p.A. Tool carrier for a double-spindle grinding machine
WO2000059681A1 (en) * 1999-04-01 2000-10-12 Koninklijke Philips Electronics N.V. Cmp pad conditioner arrangement and method therefor
WO2000073023A1 (en) * 1999-05-28 2000-12-07 Saint-Gobain Abrasives, Inc. Abrasive tools for grinding electronic components
US6394888B1 (en) 1999-05-28 2002-05-28 Saint-Gobain Abrasive Technology Company Abrasive tools for grinding electronic components
CN102909666A (en) * 2012-11-20 2013-02-06 无锡威孚精密机械制造有限责任公司 Forced cooling type vertical spring grinding machine grinding wheel device
CN102909666B (en) * 2012-11-20 2014-09-24 无锡威孚精密机械制造有限责任公司 Forced cooling type vertical spring grinding machine grinding wheel device
CN114589637A (en) * 2020-12-04 2022-06-07 台山市兰宝磨具有限公司 Grinding tool with good heat dissipation effect

Also Published As

Publication number Publication date
IT231237Y1 (en) 1999-08-02
ITBS930030V0 (en) 1993-04-26
ITBS930030U1 (en) 1994-10-26
DE9406694U1 (en) 1994-06-23
FR2704473B3 (en) 1995-03-31

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