EP0000294B1 - Tool retraction device on a machine tool - Google Patents

Tool retraction device on a machine tool Download PDF

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Publication number
EP0000294B1
EP0000294B1 EP78400002A EP78400002A EP0000294B1 EP 0000294 B1 EP0000294 B1 EP 0000294B1 EP 78400002 A EP78400002 A EP 78400002A EP 78400002 A EP78400002 A EP 78400002A EP 0000294 B1 EP0000294 B1 EP 0000294B1
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EP
European Patent Office
Prior art keywords
tool
play
piece
taking
machine
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.)
Expired
Application number
EP78400002A
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German (de)
French (fr)
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EP0000294A1 (en
Inventor
Gabriel Marty
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.)
Regie Nationale des Usines Renault
Original Assignee
Regie Nationale des Usines Renault
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Filing date
Publication date
Application filed by Regie Nationale des Usines Renault filed Critical Regie Nationale des Usines Renault
Publication of EP0000294A1 publication Critical patent/EP0000294A1/en
Application granted granted Critical
Publication of EP0000294B1 publication Critical patent/EP0000294B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/64—Movable or adjustable work or tool supports characterised by the purpose of the movement
    • B23Q1/68—Movable or adjustable work or tool supports characterised by the purpose of the movement for withdrawing tool or work during reverse movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
    • B23Q1/262—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members with means to adjust the distance between the relatively slidable members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/47—Cutting by use of rotating axially moving tool with work-infeed means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/96—Miscellaneous
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/304536—Milling including means to infeed work to cutter
    • Y10T409/305544—Milling including means to infeed work to cutter with work holder
    • Y10T409/305656—Milling including means to infeed work to cutter with work holder including means to support work for rotation during operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/309352—Cutter spindle or spindle support

Definitions

  • the invention due to the collaboration of M. MARTY GABRIEL, relates to the problem of tool removal on machine tools where it is desired, at the end of machining, to avoid removing the surface machined during the race relative tool-piece clearance
  • the present invention relates to an advantageous solution taking advantage of a common arrangement of machine, to do this.
  • the tool removal device in a machine comprising a movable assembly for supporting the tool or the part having a backlash guide by lateral stress, is characterized in that it includes means for laterally moving said movable assembly away from and opposite to its play take-up position from the guide to move the tool away from the workpiece after machining in the play take-up position, the tool remaining in this position.
  • Such a solution is particularly advantageous on machines with tool-holder spindle (s) for internal machining, such as boring machines, in which the spindle is manually indexable or can be subjected to an angular stop indexing device in end of machining, because it suffices, then, to provide an indexing of tool (s) in a plane approximately parallel to that of the aforementioned backlash and in the same direction as the latter prior to the implementation of the means above, used to separate the tool from the workpiece.
  • the means intended to separate the tool or tools from the workpiece can simply be constituted by pneumatic pushers opposite to the previous ones and actuable in their place.
  • the machine tool shown comprises a base 1 provided with horizontal slides 2 on which is mounted, displaceable, a table 3 which is driven by means of a screw-nut mechanism 4, the driving screw of which pivots in the base, while the nut is secured to the table.
  • a flank falling from the table 3 is, moreover, guided laterally on the flank 5 of one of the runners 2 against which the table flank is kept pressed under a certain force, by a play take-up device, here constituted by at least two pneumatic pushers 6 arranged in a spaced manner on the base 1, facing a lateral slide 7 reported on the table 3 and with which they co-operate frictionally.
  • Each pusher 6, like that shown in section in the drawing, comprises a connection end piece 6a to a compressed air pipe not shown, formed in the adjacent part of the base and, around this end piece, a lip seal 6b on which can slide a pusher head 6c tightly.
  • the machine tool considered is, here, a boring machine of which only the rotating tool-holder spindle is shown at 8 with its boring tool at 9.
  • the motorized spindle-holder, not shown, which may include an angular indexing device of the spindle which can be of any known type, is fixed on the table 3 while the workpiece 10 is fixed for machining on a plate 11 secured to the base 1, this machining consisting, here, in an operation d bore of a hole 12 formed on the part 10.
  • each pneumatic pusher 6 is, in its backlash take-up position between the table flank and the flank 5, separated from the base 1 by a slight clearance 13 which may be of the order of one to a few tenths of a millimeter.
  • pneumatic pushers 14 which can be supplied with compressed air by a pipe, not shown, formed in the adjacent part of the base 1, these pushers cooperating with a lateral slide 15 attached to the table.
  • the present invention is applicable with any other lateral clearance take-up guide device of a mobile tool or workpiece support assembly in a machine tool, whatever its structure, mechanical to spring or pressurized fluid.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Drilling And Boring (AREA)

Description

L'invention, due à la collaboration de M. MARTY GABRIEL, se rapporte au problème du retrait d'outil sur les machines-outils où l'on désire, en fin d'usinage, éviter de raver la surface usinée lors de la course relative de dégagement pièce-outilThe invention, due to the collaboration of M. MARTY GABRIEL, relates to the problem of tool removal on machine tools where it is desired, at the end of machining, to avoid removing the surface machined during the race relative tool-piece clearance

On connait, une demande de brevet allemand, publiée après examen n° 1.072.863 ALFING qui, pour résoudre ce même problème, utilise le jeu des paliers hydrostatiques d'une broche pour obtenir, par un déport radial de la broche sur de tels paliers, le dégagement pièce-outil.We know a German patent application, published after examination n ° 1.072.863 ALFING which, to solve this same problem, uses the set of hydrostatic bearings of a spindle to obtain, by a radial offset of the spindle on such bearings , the tool-piece clearance.

Toutefois, cette solution impose le recours à des paliers hydrostatiques.However, this solution requires the use of hydrostatic bearings.

La présente invention a pour objet une solution avantageuse mettant à profit un agencement courant de machine, pour ce faire. Essentiellement, dans une machine comprenant un ensemble mobile de support de l'outil ou de la pièce ayant un guidage à rattrapage de jeu par sollicitation latérale, le dispositif de retrait d'outil, selon l'invention, est caractérisé en ce qu'il comporte des moyens destinés à déplacer latéralement ledit ensemble mobile à l'écart et à l'opposé de sa position de rattrapage de jeu du guidage pour écarter l'outil de la pièce après usinage dans la position de rattrapage de jeu, l'outil restant dans cette position.The present invention relates to an advantageous solution taking advantage of a common arrangement of machine, to do this. Essentially, in a machine comprising a movable assembly for supporting the tool or the part having a backlash guide by lateral stress, the tool removal device, according to the invention, is characterized in that it includes means for laterally moving said movable assembly away from and opposite to its play take-up position from the guide to move the tool away from the workpiece after machining in the play take-up position, the tool remaining in this position.

Une telle solution est particulièrement avantageuse sur les machines à broche porte-outil(s) pour usinage d'intérieur, telles que les aléseuses, dans lesquelles la broche est indexable manuellement ou peut être soumise à un dispositif d'indexage angulaire d'arrêt en fin d'usinage, car il suffit, alors, de prévoir un indexage d'outil(s) en un plan approximativement parallèle à celui du rattrapage de jeu précité et dans le même sens que celui-ci préalablement à la mise en oeuvre des moyens précités, utilisés pour écarter l'outil de la pièce.Such a solution is particularly advantageous on machines with tool-holder spindle (s) for internal machining, such as boring machines, in which the spindle is manually indexable or can be subjected to an angular stop indexing device in end of machining, because it suffices, then, to provide an indexing of tool (s) in a plane approximately parallel to that of the aforementioned backlash and in the same direction as the latter prior to the implementation of the means above, used to separate the tool from the workpiece.

Il est à voir qu'en ce cas les dispositifs de retrait d'outii(s) sont peu commodes à incorporer dans des broches porte-outil(s) sauf dans le cas du brevet précité et constituent une servitude coûteuse en comparaison de celle objet de l'invention inhérente à la machine.It is to be seen that in this case the withdrawal devices from tool (s) are not very convenient to incorporate into tool-holder pins (except in the case of the aforementioned patent and constitute an expensive servitude in comparison with that object of the invention inherent in the machine.

En particulier, dans une machine à guidage à rattrapage de jeu par poussoirs pneumatiques, les moyens destinés à écarter le ou les outils de la pièce peuvent être simplement constitués par des poussoirs pneumatiques opposés aux précédents et actionnables à leur place.In particular, in a guide machine with backlash adjustment by pneumatic pushers, the means intended to separate the tool or tools from the workpiece can simply be constituted by pneumatic pushers opposite to the previous ones and actuable in their place.

Une forme de réalisation d'un dispositif de retrait d'outil sur machine-outil conforme à l'invention est ci-après décrite, à titre d'exemple, et en référence au jessin annexé, dans lequel la figure unique est une vue en bout et coupe transversale partielle d'une machine-outil à dispositif de rattrapage de jeu et de retrait d'outil pneumatique.An embodiment of a tool removal device on a machine tool according to the invention is described below, by way of example, and with reference to the attached drawing, in which the single figure is a view in end and partial cross section of a machine tool with backlash take-up and pneumatic tool removal.

La machine-outil représentée comprend un socle 1 pourvu de glissières horizontales 2 sur lesquelles est montée, déplaçable, une table 3 qui est entraînée par l'intermédiaire d'un mécanisme à vis-écrou 4, dont la vis motrice tourillonne dans le socle, tandis que l'écrou est solidaire de la table.The machine tool shown comprises a base 1 provided with horizontal slides 2 on which is mounted, displaceable, a table 3 which is driven by means of a screw-nut mechanism 4, the driving screw of which pivots in the base, while the nut is secured to the table.

Un flanc tombant de la table 3 est, en outre, guidé latéralement sur le flanc 5 de l'une des glissières 2 contre lequel le flanc de table est maintenu appuyé sous une certaine force, par un dispositif de rattrapage de jeu, ici, constitué par au moins deux poussoirs pneumatiques 6 disposés de façon espacée sur le socle 1, face à une glissière latérale 7 rapportée sue la table 3 et evec laquelle ils coopèrent à friction. Chaque poussoir 6, comme celui représenté en coupe au dessin, comprend un embout de raccordement 6a à une canalisation d'air comprimé non représentée, ménagée dans la partie adjacente du socle et, autour de cet embout, un joint à lèvre 6b sur lequel peut coulisser de façon étanche une tête poussoir 6c.A flank falling from the table 3 is, moreover, guided laterally on the flank 5 of one of the runners 2 against which the table flank is kept pressed under a certain force, by a play take-up device, here constituted by at least two pneumatic pushers 6 arranged in a spaced manner on the base 1, facing a lateral slide 7 reported on the table 3 and with which they co-operate frictionally. Each pusher 6, like that shown in section in the drawing, comprises a connection end piece 6a to a compressed air pipe not shown, formed in the adjacent part of the base and, around this end piece, a lip seal 6b on which can slide a pusher head 6c tightly.

La machine-outil considérée est, ici, une aléseuse dont seule la broche tournante porte-outil est figurée en 8 avec son outil d'alésage en 9. Le porte-broche motorisé, non représenté, pouvant comprendre un dispositif d'indexage angulaire de la broche qui peut être d'un type quelconque connu, est fixé sur la table 3 tandis que la pièce à usiner 10 est fixée pour l'usinage sur un plateau 11 solidaire du socle 1, cet usinage consistant, ici, en une opération d'alésage d'un trou 12 ménagé sur la pièce 10.The machine tool considered is, here, a boring machine of which only the rotating tool-holder spindle is shown at 8 with its boring tool at 9. The motorized spindle-holder, not shown, which may include an angular indexing device of the spindle which can be of any known type, is fixed on the table 3 while the workpiece 10 is fixed for machining on a plate 11 secured to the base 1, this machining consisting, here, in an operation d bore of a hole 12 formed on the part 10.

On notera que la tête poussoir 6c de chaque poussoir pneumatique 6 est, dans sa position de rattrapage de jeu entre le flanc de table et le flanc 5, séparée du socle 1 par un léger jeu 13 qui peut être de l'ordre de un à quelques dixièmes de millimètre.It will be noted that the pusher head 6c of each pneumatic pusher 6 is, in its backlash take-up position between the table flank and the flank 5, separated from the base 1 by a slight clearance 13 which may be of the order of one to a few tenths of a millimeter.

En position opposée aux poussoirs 6, sont disposés, de même, des poussoirs pneumatiques 14 identiquement alimentables en air comprimé par une canalisation non représentée, ménagée dans la partie adjacente du socle 1, ces poussoirs coopérant avec une glissière latérale 15 rapportée sur la table.In the position opposite to the pushers 6, are likewise arranged pneumatic pushers 14 which can be supplied with compressed air by a pipe, not shown, formed in the adjacent part of the base 1, these pushers cooperating with a lateral slide 15 attached to the table.

Ainsi, on comprend aisément qu'en fin d'usinage, pour obtenir un retrait de l'outil 9 par rapport à la pièce 10 avant extraction de la broche porte-outil 8 hors du trou alésé 12, il suffit d'indexer l'outil 9 en la position angulaire représentée au dessin, voisine de l'horizontale, et orientée dans le sens de la sollicitation latérale de rattrapage de jeu, puis d'alimenter en air comprimé les poussoirs pneumatiques 14 tandis que ceux de rattrapage de jeu 6 sont mis à l'échappement, de sorte que l'ensemble table 3, porte-broche et broche porte-outil 8, 9, est alors décalé du jeu 13 à l'inverse de la position de l'outil 9, et que ce dernier se trouve ainsi décalé par rapport au trou alésé 12 dont il peut être retiré avec la broche sans risque de rayer l'alésage effectué.Thus, it is easily understood that at the end of machining, to obtain a withdrawal of the tool 9 relative to the part 10 before extraction of the tool-holder spindle 8 from the reamed hole 12, it suffices to index the tool 9 in the angular position shown in the drawing, close to the horizontal, and oriented in the direction of the lateral action to take up the play, then to supply compressed air to the pneumatic pushers 14 while those to take up the play 6 are exhausted, so that the table 3 assembly, spindle holder and tool holder spindle 8, 9, is then offset from the play 13 opposite to the position of the tool 9, and that the latter is thus offset from the reamed hole 12 which it can be removed with the spindle without risk of scratching the bore.

Pour l'usinage de la pièce suivante, l'alimentation pneumatique des poussoirs 6, 14 est de nouveau inversée avant usinage et ainsi de suite.For the machining of the next part, the pneumatic supply of the pushers 6, 14 is again reversed before machining and so on.

Il va de soi que la présente invention est applicable avec tout autre dispositif de guidage à rattrapage de jeu latéral d'un ensemble mobile de support d'outil ou de pièce dans une machine-outil, quelle qu'en soit la structure, mécanique à ressort ou à fluide sous pression.It goes without saying that the present invention is applicable with any other lateral clearance take-up guide device of a mobile tool or workpiece support assembly in a machine tool, whatever its structure, mechanical to spring or pressurized fluid.

Claims (3)

1. An apparatus for retracting the tool from a piece being machined on a machine-tool, comprising a movable assembly supporting the tool or the piece, having guiding means for rectilinear displacement with means for taking up play by lateral biasing, characterized by the fact that it includes a device enabling the lateral displacement of the said movable assembly away and oppositely from its taking up play guiding position, in order to separate the tool in the taking up play position from the piece after its machining, the tool remaining in the same orientation.
2. An apparatus for retraction of the tool, as in claim 1, for a machine-tool with an indexible tool-holding spindle, characterized by the fact that it is provided with indexing of the tool in a plane approximately parallel to that of the taking up of play, prior to activation of the said means utilized for retracting the tool from the piece.
3. An apparatus for retraction of the tool as in one of the foregoing claims, in which the guiding means with means for taking up play comprises pneumatic drivers, characterized by the fact that the said means for retracting the tool from the piece consist of pneumatic drivers opposed to the preceding ones and activatable in their place.
EP78400002A 1977-06-27 1978-06-01 Tool retraction device on a machine tool Expired EP0000294B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7719614A FR2395811A1 (en) 1977-06-27 1977-06-27 TOOL REMOVAL DEVICE ON MACHINE-TOOL
FR7719614 1977-06-27

Publications (2)

Publication Number Publication Date
EP0000294A1 EP0000294A1 (en) 1979-01-10
EP0000294B1 true EP0000294B1 (en) 1980-10-29

Family

ID=9192608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78400002A Expired EP0000294B1 (en) 1977-06-27 1978-06-01 Tool retraction device on a machine tool

Country Status (7)

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US (1) US4737054A (en)
EP (1) EP0000294B1 (en)
JP (1) JPS5411580A (en)
DE (1) DE2860250D1 (en)
ES (1) ES469389A1 (en)
FR (1) FR2395811A1 (en)
IT (1) IT1108557B (en)

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
JPS60191741A (en) * 1984-03-08 1985-09-30 Fanuc Ltd Tool-passage control
FI78160C (en) * 1985-01-18 1989-06-12 Tampella Oy Ab Storage arrangement for a feeding device for a drill
KR100378665B1 (en) * 2000-07-13 2003-03-31 위아 주식회사 a gib inserting structure for a lathe table
JP4977976B2 (en) * 2004-08-06 2012-07-18 三菱瓦斯化学株式会社 Insulated ultrafine powder and high dielectric constant resin composite material
EP1788040B1 (en) 2004-08-06 2012-06-06 Mitsubishi Gas Chemical Company, Inc. Insulated ultrafine powder and high dielectric constant resin composite material

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Publication number Priority date Publication date Assignee Title
DE1072863B (en) * 1960-01-07 Nabenfabrik Alfmg Kessler Komm Ges Wasseralfmgen (Wurtt) Hydraulic cutting edge lift-off for drilling tools
US2642759A (en) * 1950-05-09 1953-06-23 Massari Bros Machine Company Boring machine spindle construction
NL253253A (en) * 1959-09-24
DE1477579C3 (en) * 1960-09-13 1974-01-03 Hellmut Dipl.-Ing. 7300 Esslingen-Liebersbronn Mueller Device for processing workpieces
US3438288A (en) * 1967-05-01 1969-04-15 Ingersoll Milling Machine Co Bearing support for tool spindles
US3466952A (en) * 1967-12-06 1969-09-16 Babcock & Wilcox Co Hydrostatic bearing supported boring bar
US3466951A (en) * 1968-01-15 1969-09-16 Babcock & Wilcox Co Machine tools and instruments
FR1588597A (en) * 1968-09-20 1970-04-17
US3622247A (en) * 1969-04-01 1971-11-23 Myron L Greenberg Boring method
CH521821A (en) * 1969-12-24 1972-04-30 Oerlikon Buehrle Ag Machine tool with a part that can be moved in a straight line
SU368941A1 (en) * 1971-02-08 1973-02-08 Специальное конструкторское бюро алмазно расточных , радиально сверлильных станков DIAMOND BORING MACHINE (• '^ ^ * * ti ^ -ib / IO.:}: KA
DE2409721C3 (en) * 1974-03-01 1978-06-29 Georg Gert 3500 Kassel Frederichs Drilling and turning device with a device controlled by fluid pressure for lifting the cutting edges from a machined surface

Also Published As

Publication number Publication date
EP0000294A1 (en) 1979-01-10
IT1108557B (en) 1985-12-09
US4737054A (en) 1988-04-12
FR2395811A1 (en) 1979-01-26
JPS5411580A (en) 1979-01-27
DE2860250D1 (en) 1981-01-29
ES469389A1 (en) 1979-02-16
FR2395811B1 (en) 1982-10-29
IT7868396A0 (en) 1978-06-15

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