FR2629745A1 - Device for driving a machining supporting table - Google Patents

Device for driving a machining supporting table Download PDF

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Publication number
FR2629745A1
FR2629745A1 FR8804844A FR8804844A FR2629745A1 FR 2629745 A1 FR2629745 A1 FR 2629745A1 FR 8804844 A FR8804844 A FR 8804844A FR 8804844 A FR8804844 A FR 8804844A FR 2629745 A1 FR2629745 A1 FR 2629745A1
Authority
FR
France
Prior art keywords
plate
motor
piston
annular disc
driving
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
FR8804844A
Other languages
French (fr)
Other versions
FR2629745B1 (en
Inventor
Georges Loulier
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
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 Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Priority to FR8804844A priority Critical patent/FR2629745B1/en
Publication of FR2629745A1 publication Critical patent/FR2629745A1/en
Application granted granted Critical
Publication of FR2629745B1 publication Critical patent/FR2629745B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02—Indexing equipment
    • B23Q16/08—Indexing equipment having means for clamping the relatively movable parts together in the indexed position
    • B23Q16/10—Rotary indexing
    • B23Q16/105—Rotary indexing clamping with a disc brake
    • 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
    • B23Q1/28—Means for securing sliding members in any desired position
    • 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
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
    • B23Q1/52—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair
    • B23Q1/522—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair which is perpendicular to the working surface
    • 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
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02—Indexing equipment
    • B23Q16/08—Indexing equipment having means for clamping the relatively movable parts together in the indexed position
    • B23Q16/10—Rotary indexing
    • B23Q16/102—Rotary indexing with a continuous drive

Abstract

The subject of the present invention is a device for driving a machining supporting table in rotation with respect to a framework, which comprises means for driving the supporting table and means for blocking the supporting table in a given angular position. According to the invention, the said driving means comprise a motor 4 arranged axially to the supporting table 2 and the locking means are arranged around this motor 4.

Description

Les plateaux d'usinage sont jusqu'à présent entraînés soit par une commande hydraulique avec centrage par denture, soit par un groupe électrique moto-réducteur; dans la plupart des cas, on rencontre des difficultés d'indexage, il est nécessaire de lever le plateau pour assurer son dés indexage et le dispositif s'adapte mal à de nouvelles gammes de fabrication.The machining plates have so far been driven either by hydraulic control with gear centering, or by an electric motor-reducer group; in most cases, indexing difficulties are encountered, it is necessary to lift the plate to ensure its indexing and the device does not adapt well to new production ranges.

La présente invention a pour objet un dispositif d'en- tratnement d'un plateau d'usinage monté à rotation par rapport à un bats, qui comprend des moyens d'entratne- ment du plateau et des moyens pour bloquer le plateau dans une position angulaire donnée, et qui remédie à ces inconvénients.The present invention relates to a device for driving a machining plate rotatably mounted relative to a bats, which comprises means for driving the plate and means for locking the plate in a position angular given, and which remedies these drawbacks.

Ce dispositif d'entraînement est caractérisé en ce que les moyens d'entrainement comprennent un moteur disposé coaxialement au plateau et en ce que les moyens de blocage sont disposés autour de ce moteur.This drive device is characterized in that the drive means comprise a motor arranged coaxially with the plate and in that the blocking means are arranged around this motor.

Le moteur est de préférence un moteur à fort couple relié directement au plateau. Le dispositif comporte alors un nombre réduit de pièces du fait de la suppression de la pignonnerie et du dispositif de levage; la mécanique est donc très simple et fiable et il n'y a aucun jeu entre le moteur et le plateau.The motor is preferably a high torque motor connected directly to the plate. The device then comprises a reduced number of parts due to the elimination of the gear and the lifting device; the mechanics are therefore very simple and reliable and there is no play between the motor and the chainring.

Les moyens de blocage peuvent comprendre un disque annulaire souple ayant une première partie fixée au plateau ou au b ti et une deuxième partie libre de se déplacer entre une position de verrouillage dans laquelle elle est bloquée contre une pièce antagoniste solidaire respectivement du bàti ou du plateau et une position de déverrouillage, et des moyens pour déplacer ladite deuxième partie entre la position de verrouillage et la position de déverrouillage.The locking means may comprise a flexible annular disc having a first part fixed to the plate or to the base and a second part free to move between a locking position in which it is blocked against an opposing part secured respectively to the frame or the plate. and an unlocked position, and means for moving said second part between the locked position and the unlocked position.

On a décrit ci-apres, à titre d'exemple non limitatif, un mode de réalisation du dispositif d'entratnement selon l'invention, avec référence aux dessins annexés dans lesquels
La Figure 1 est une vue en coupe axiale montrant
le plateau, son moteur d'entratnement et ses moyens
de blocage;
La Figure 2 est une vue en coupe d'un détail
d'une variante.An embodiment of the drive device according to the invention has been described below, by way of non-limiting example, with reference to the appended drawings in which
Figure 1 is an axial sectional view showing
the platform, its drive motor and its means
blocking;
Figure 2 is a sectional view of a detail
of a variant.

Tel qu'il est représenté au dessin, l'élément de fixation de pièce comprend un bâti 1 et un plateau d'usinage 2 supporté par le bati et monté à rotation par rapport à celui-ci par l'intermédiaired'un roulement 3. Un moteur d'entrainementlent 4 à fort cou?le, avec résolveur incorporé, est disposé coaxialement au plateau en ayant son stator et son rotor fixés respectivement au bâti et au plateau.As shown in the drawing, the workpiece fixing element comprises a frame 1 and a machining plate 2 supported by the frame and mounted for rotation relative to the latter by means of a bearing 3. A drive motor 4 with strong neck, with incorporated resolver, is arranged coaxially with the plate having its stator and its rotor fixed respectively to the frame and to the plate.

Un disque annulaire souple 5 est interposé entre le plateau et le b ti. La partie périphérique intérieure
Sa de ce disque est fixée au plateau; sa partie périphérique extérieure 5b, qui est reliée à la partie Sa par une partie amincie Sc, présente des dents sur sa face supérieure. En regard de cette face dentée se trouve un flasque de réaction 6 qui est également denté et est fixé au b ti 1. La face inférieure de la partie 5b du disque est disposée en regard d'un piston annulaire 7 qui est mobile dans une chambre 8 ménagée dans le b ti 1 et pouvant être mise en communication avec une source de pression par l'intermédiaire d'un per çage 9. Un joint 10 est serré entre ce piston et une collerette Il fixée au bâti 1; ce joint tend ainsi à ramener le piston dans sa position de repos.A flexible annular disc 5 is interposed between the plate and the b ti. The inner peripheral part
Sa of this disc is fixed to the tray; its outer peripheral part 5b, which is connected to the part Sa by a thinned part Sc, has teeth on its upper face. Opposite this toothed face is a reaction flange 6 which is also toothed and is fixed to the base 1. The lower face of the part 5b of the disc is arranged opposite an annular piston 7 which is movable in a chamber 8 formed in the b ti 1 and which can be placed in communication with a pressure source by means of a bore 9. A seal 10 is clamped between this piston and a flange It fixed to the frame 1; this seal thus tends to return the piston to its rest position.

Un levier coudé 12 est monté pivotant en 13 sur le bâti 1. L'une des extrémités de ce levier est reliée à la partie périphérique extérieure 5b du disque 5; l'autre extrémité du levier commande deux contacts électriques i4: & t 14b détectant la position de cette partie périphérique extérieure 5b, donc celle du piston. La protectioncontrel'environnement est assurée par un flasque chicane 15 et un joint 16.A bent lever 12 is pivotally mounted at 13 on the frame 1. One of the ends of this lever is connected to the outer peripheral part 5b of the disc 5; the other end of the lever controls two electrical contacts i4: & t 14b detecting the position of this external peripheral part 5b, therefore that of the piston. Environmental protection is ensured by a chicane flange 15 and a seal 16.

La pression étant admise dans la partie inférieure de de la chambre 8 par l'intermédiaire du perçage 9, le piston 7 est maintenu uans sa position haute et presse la partie pdriphérique dentée 5b du disque 5 contre le flasque 6, ce qui bloque le plateau 2.The pressure being admitted in the lower part of the chamber 8 via the bore 9, the piston 7 is held in its high position and presses the toothed peripheral part 5b of the disc 5 against the flange 6, which blocks the plate 2.

A la coupure de la pression d'alimentation le piston 7 descend à fond de course sous l'action du joint 10.When the supply pressure is cut off, the piston 7 descends to the bottom of the travel under the action of the seal 10.

La partie 5b du disque 5 se libère du flasque 6 en entraînant le levier 1?;celui-ci agit sur le détecteur 14e qui délivre un signal électrique de contrôle de déverrouillage des dents. Ce signal autorise le fonctionnement du moteur 4 d'une valeur programmée par commande numérique et contrôlé par le résolveur intégré au moteur. The part 5b of the disc 5 is released from the flange 6 by driving the lever 1?; This acts on the detector 14e which delivers an electrical signal for controlling the unlocking of the teeth. This signal authorizes the operation of motor 4 by a value programmed by digital control and controlled by the resolver integrated into the motor.

En fin de la rotation programmée, le moteur 4 s'arrête et la commande numérique délivre un signal électrique qui, par l'intermédiaire d'un distributeur à commande électrique, admet la pression dans le perçage 9. Le piston 8 se déplace vers le haut et assure l'engagement des dents du disque 5 avec celles du flasque de réaction 6. Le levier 12 bascule et agit sur le détecteur 14b. Celui-ci autorise les mouvements suivants, par exemple l'usinage de pièces fixées sur le plateau.At the end of the programmed rotation, the motor 4 stops and the digital control delivers an electrical signal which, via an electrically controlled distributor, admits the pressure in the bore 9. The piston 8 moves towards the high and ensures the engagement of the teeth of the disc 5 with those of the reaction flange 6. The lever 12 rocks and acts on the detector 14b. This allows the following movements, for example the machining of parts fixed on the plate.

Dans la variante de la Figure 2, le disque 5' ne comporte pas de denture; le flasque de réaction 6' ne comporte pas non plus de denture mais est recouvert de Ferodon 17. In the variant of Figure 2, the disc 5 'has no teeth; the reaction flange 6 ′ also does not have teeth but is covered with Ferodon 17.

On voit de la description qui précède que le dispositif d'entraînement selon l'invention comporte un nombre minimal de pièces grâce à la suppression de la pignonnerie et du dispositif de levage; il est donc mécaniquement très simple et fiable. Il n'y a aucun jeu entre le moteur 4 et le plateau 2. L'entretien est très simple et le plateau 2 s'intègre parfaitement dans toute chaîne de fabrication.It can be seen from the foregoing description that the drive device according to the invention comprises a minimum number of parts by virtue of the elimination of the gear and the lifting device; it is therefore mechanically very simple and reliable. There is no play between the motor 4 and the plate 2. The maintenance is very simple and the plate 2 fits perfectly into any production line.

Il va de soi que la présente invention ne doit pas être considérée comme limitée au mode de réalisation décrit et représenté, mais en couvre au contraire, toutes les variantes. It goes without saying that the present invention should not be considered as limited to the embodiment described and shown, but on the contrary covers all variants.

Claims (11)

RevendicationsClaims 1. Dispositif d'éntrainement d'un plateau d'usinage monté à rotation par rapport à un bâti, qui comprend des moyens d'entraînement du plateau et des moyens pour bloquer le plateau dans une position angulaire donnée, caractérisé en ce que lesdits moyens d'entrainement comprennent un moteur (4) disposé axialement au plateau (2) et en ce que lesmoyens de blocage sont disposés autour de ce moteur (4).1. Device for driving a machining plate rotatably mounted relative to a frame, which comprises means for driving the plate and means for locking the plate in a given angular position, characterized in that said means drive comprise a motor (4) arranged axially to the plate (2) and in that the blocking means are arranged around this motor (4). 2. Dispositif selon la revendication 1, caractérisé en ce que le moteur (4) est un moteur à fort couple relié directement au plateau.2. Device according to claim 1, characterized in that the motor (4) is a high torque motor connected directly to the plate. 3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les moyens de blocage comprennent - un disque annulaire souple (5) ayant une première partie (5á) fixée au plateau (2) ou au b ti (1) et une deuxième partie (5b) libre de se déplacer entre une position de verrouillage dans laquelle elle est bloquée contre une pièce antagoniste (6) solidaire respectivement du b ti (1) ou du plateau (2) et une position de déverrouillage, et - des moyens (7) pour déplacer ladite deuxième partie (5b) entre la position de verrouillage et la position de déverrouillage.3. Device according to claim 1 or 2, characterized in that the locking means comprise - a flexible annular disc (5) having a first part (5á) fixed to the plate (2) or to the b ti (1) and a second part (5b) free to move between a locking position in which it is locked against an opposing part (6) secured respectively to the b ti (1) or the plate (2) and an unlocking position, and - means ( 7) to move said second part (5b) between the locked position and the unlocked position. 4. Dispositif selon la revendication 3, caractérisé en ce que le disque annulaire (5) comprend une zone périphérique interne (Sa) et une zone périphérique externe (5b > reliées par une partie amincie (Sc), ces zones périphériques constituant lesdites première et deuxième parties.4. Device according to claim 3, characterized in that the annular disc (5) comprises an internal peripheral zone (Sa) and an external peripheral zone (5b> connected by a thinned part (Sc), these peripheral zones constituting said first and second parts. 5. Dispositif selon la revendication 3, caractérisé en ce que ladite deuxième partie (5b) présente une surface plane pouvant étre amenée, en position de verrouillage, en contact avec une autre surface plane portée. par la pièce antagoniste (6)5. Device according to claim 3, characterized in that said second part (5b) has a flat surface which can be brought, in the locked position, into contact with another flat surface carried. by the opposing piece (6) 6. Dispositif selon la revendication 3, caractérisé en ce que ladite deuxième partie (5b) comporte une série de dents pouvant engrener, en position de verrouillage, sur une série de dents correspondantes portée par la pièce antagoniste (6).6. Device according to claim 3, characterized in that said second part (5b) comprises a series of teeth which can mesh, in the locked position, on a series of corresponding teeth carried by the opposing piece (6). 7. Dispositif selon l'une quelconque des revendications 3 à 6, caractérisé en ce que les moyens pour déplacer la deuxième partie (5b) du disque annulaire souple (5) entre la position de verrouillage et la position de déverrouillage comprennent un vérin ayant un piston (7) monté sur le bàti ou le plateau et déplaçable entre une position de travail dans laquelle il applique ladite partie (5b) du disque annulaire souple contre la pièce antagoniste (6) et une position de repos.7. Device according to any one of claims 3 to 6, characterized in that the means for moving the second part (5b) of the flexible annular disc (5) between the locked position and the unlocked position comprise a cylinder having a piston (7) mounted on the frame or the plate and movable between a working position in which it applies said part (5b) of the flexible annular disc against the opposing part (6) and a rest position. 8. Dispositif selon la revendication 7, caractérisé en ce que le piston (7) est de forme annulaire. 8. Device according to claim 7, characterized in that the piston (7) is of annular shape. 9. Dispositif selon l'une quelconque des revendications 7 et 8, caractérisé en ce qu'il comporte en outre des moyens de rappel du piston (7) en position de repos.9. Device according to any one of claims 7 and 8, characterized in that it further comprises means for returning the piston (7) to the rest position. 10. Dispositif selon la revendication 9, caractérisé en ce que les moyens de rappel comprennent un joint élastique (10) prenant appui d'une part sur le b ti ou le plateau et d'autre part sur le piston (7).10. Device according to claim 9, characterized in that the return means comprise an elastic seal (10) bearing on the one hand on the b ti or the plate and on the other hand on the piston (7). 11. Dispositif selon l'une quelconque des revendications 1 à 10, caractérisé en ce qu'il comporte en outre des moyens (13 et 14) pour détecter la position de la partie libre du disque annulaire souple. 11. Device according to any one of claims 1 to 10, characterized in that it further comprises means (13 and 14) for detecting the position of the free part of the flexible annular disc.
FR8804844A 1988-04-06 1988-04-06 DEVICE FOR DRIVING A MACHINING TRAY Expired - Fee Related FR2629745B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8804844A FR2629745B1 (en) 1988-04-06 1988-04-06 DEVICE FOR DRIVING A MACHINING TRAY

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8804844A FR2629745B1 (en) 1988-04-06 1988-04-06 DEVICE FOR DRIVING A MACHINING TRAY

Publications (2)

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FR2629745A1 true FR2629745A1 (en) 1989-10-13
FR2629745B1 FR2629745B1 (en) 1994-03-04

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990014521A1 (en) * 1989-05-26 1990-11-29 Gnani, Dario Method and device for locking rotary bodies
EP2082828A3 (en) * 2008-01-28 2010-03-24 Maschinenfabrik Berthold Hermle AG Machining centre with clamp device for the rotary workpiece table
EP2179817A1 (en) * 2008-10-24 2010-04-28 Tsudakoma Kogyo Kabushiki Kaisha Clamping device of indexing device for machine tool
CN101850517A (en) * 2010-05-26 2010-10-06 湖州机床厂有限公司 Lifting and clamping composite structure of movable workbench of hydraulic press
US10737362B2 (en) 2017-06-21 2020-08-11 Gildemeister Italiana S.P.A. Machine tool, in particular multi-spindle turning machine
US10737329B2 (en) 2017-06-21 2020-08-11 Gildemeister Italiana S.P.A. Bar loader apparatus for use with a machine tool and machine tool equipped with such bar loader apparatus
US10786882B2 (en) * 2017-06-21 2020-09-29 Gildemeister Italiana S.P.A. Machine tool, in particular multi-spindle turning machine
JP2023067417A (en) * 2021-11-01 2023-05-16 株式会社日研工作所 Circular table device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2251114A1 (en) * 1971-11-01 1973-05-10 Ichiji Ito PARTIAL DEVICE
US3961780A (en) * 1975-03-19 1976-06-08 U.S. Industries, Inc. Precision rotary indexing fixture
JPS51142783A (en) * 1975-06-03 1976-12-08 Shinpo Kogyo Kk Index device
FR2386387A1 (en) * 1977-04-04 1978-11-03 Textron Inc SET WITH ROTARY PARTS HOLDER AND INDEXING CONTROL DEVICE
JPS55112751A (en) * 1979-02-16 1980-08-30 Hitachi Denshi Ltd Angle indexing device
DE3104683A1 (en) * 1981-02-10 1982-08-26 Heinz 2000 Hamburg Buchmeier Indexable construction unit, in particular a turret head for machine tools

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2251114A1 (en) * 1971-11-01 1973-05-10 Ichiji Ito PARTIAL DEVICE
US3961780A (en) * 1975-03-19 1976-06-08 U.S. Industries, Inc. Precision rotary indexing fixture
JPS51142783A (en) * 1975-06-03 1976-12-08 Shinpo Kogyo Kk Index device
FR2386387A1 (en) * 1977-04-04 1978-11-03 Textron Inc SET WITH ROTARY PARTS HOLDER AND INDEXING CONTROL DEVICE
JPS55112751A (en) * 1979-02-16 1980-08-30 Hitachi Denshi Ltd Angle indexing device
DE3104683A1 (en) * 1981-02-10 1982-08-26 Heinz 2000 Hamburg Buchmeier Indexable construction unit, in particular a turret head for machine tools

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990014521A1 (en) * 1989-05-26 1990-11-29 Gnani, Dario Method and device for locking rotary bodies
EP2082828A3 (en) * 2008-01-28 2010-03-24 Maschinenfabrik Berthold Hermle AG Machining centre with clamp device for the rotary workpiece table
EP2179817A1 (en) * 2008-10-24 2010-04-28 Tsudakoma Kogyo Kabushiki Kaisha Clamping device of indexing device for machine tool
CN101722442A (en) * 2008-10-24 2010-06-09 津田驹工业株式会社 Clamping device of indexing device for machine tool
CN101722442B (en) * 2008-10-24 2013-06-12 津田驹工业株式会社 Clamping device of indexing device for machine tool
CN101850517A (en) * 2010-05-26 2010-10-06 湖州机床厂有限公司 Lifting and clamping composite structure of movable workbench of hydraulic press
CN101850517B (en) * 2010-05-26 2012-01-25 湖州机床厂有限公司 Lifting and clamping composite structure of movable workbench of hydraulic press
US10737362B2 (en) 2017-06-21 2020-08-11 Gildemeister Italiana S.P.A. Machine tool, in particular multi-spindle turning machine
US10737329B2 (en) 2017-06-21 2020-08-11 Gildemeister Italiana S.P.A. Bar loader apparatus for use with a machine tool and machine tool equipped with such bar loader apparatus
US10786882B2 (en) * 2017-06-21 2020-09-29 Gildemeister Italiana S.P.A. Machine tool, in particular multi-spindle turning machine
JP2023067417A (en) * 2021-11-01 2023-05-16 株式会社日研工作所 Circular table device

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Publication number Publication date
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