BE560658A - - Google Patents

Info

Publication number
BE560658A
BE560658A BE560658DA BE560658A BE 560658 A BE560658 A BE 560658A BE 560658D A BE560658D A BE 560658DA BE 560658 A BE560658 A BE 560658A
Authority
BE
Belgium
Prior art keywords
cylinder
clamp
piston
shaft
oil
Prior art date
Application number
Other languages
French (fr)
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 filed Critical
Publication of BE560658A publication Critical patent/BE560658A/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B31/00Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02Chucks
    • B23B31/10Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/20Longitudinally-split sleeves, e.g. collet chucks
    • B23B31/201Characterized by features relating primarily to remote control of the gripping means
    • B23B31/204Characterized by features relating primarily to remote control of the gripping means using fluid-pressure means to actuate the gripping means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Clamps And Clips (AREA)
  • Turning (AREA)

Claims (1)

Pour serrer un matériau en forme de barre sur des=tours ou analogues, on monte notamment des cylindres creux sur l'extrémité de l'arbre du tour, lesquels actionnent par commande à l'huile au moyen d'un tube de liaison à l'intérieur dudit arbre le mandrin de serrage ou une pince, laquelle est montée sur le flasque avant de cet arbre. Un tel dispositif To clamp a bar-shaped material on = lathes or the like, hollow cylinders are mounted in particular on the end of the shaft of the lathe, which are actuated by oil control by means of a connecting tube to the lathes. 'Inside said shaft the clamping mandrel or a clamp, which is mounted on the front flange of this shaft. Such a device de serrage à commande par huile pour le parachèvement de matériau en forme de barre présente cependant l'inconvénient que le tube de liaison disposé à l'intérieur de l'arbre du tour diminue, de la double épaisseur de sa paroi, le plus grand diamètre susceptible de parachèvement d'une pièce à parachever. Pour utiliser pleinement le passage de l'arbre, on connait des pinces pour bout avant, qui ne permettent cependant que l'emploi de matériau en barre étiré nu présentant de minimes différences de diamètre, par suite de la force corporelle limitée de l'ouvrier. On ne peut ainsi vaincre la difficulté due à de grandes différences du matériau laminé en barre sans utiliser une démultiplication essentiellement plus forte. oil-controlled clamping device for finishing bar-shaped material, however, has the drawback that the connecting tube arranged inside the lathe shaft decreases, by the double thickness of its wall, the larger diameter likely to complete a part to be completed. To make full use of the shaft passage, nose end pliers are known, which however only allow the use of bare stretched bar material with minimal differences in diameter, due to the limited body strength of the worker. . One cannot thus overcome the difficulty due to large differences in the material rolled into a bar without using an essentially greater reduction. Pour supprimer cet inconvénient, on propose, suivant la présente invention, de monter directement dans le carter d'amenée d'huile le cylindre tournant servant de corps de mandrin et de disposer dans ce cylindre le piston de la pince, lequel reçoit la forme d'une douille de serrage mobile et agit directement sur les mors de serrage. En outre, le piston de la pince et le cylindre peuvent être avantageusement pourvus de couronnes supplémentaires pour former une deuxième chambre de cylindre alimentée lors du serrage, afin de réaliser une action en tandem. To overcome this drawback, it is proposed, according to the present invention, to mount directly in the oil supply housing the rotating cylinder serving as mandrel body and to have in this cylinder the piston of the clamp, which receives the shape of 'a movable clamping sleeve and acts directly on the clamping jaws. In addition, the piston of the clamp and the cylinder can advantageously be provided with additional rings to form a second cylinder chamber supplied during tightening, in order to perform a tandem action. Grâce à une telle disposition de la pince on obtient une diminution des masses en rotation, une réduction des frais de construction et une simplification du montage. Mais, en ordre principal, on peut utiliser le passage total de l'arbre de la machine. Grâce à l'emploi de la comman- <EMI ID=1.1> By virtue of such an arrangement of the clamp, a reduction in the rotating masses is obtained, a reduction in construction costs and a simplification of the assembly. But, in main order, one can use the total passage of the shaft of the machine. Using the command- <EMI ID = 1.1> rences de diamètre dans le cas de matériau laminé en barres, ce qui rend possible une diminution d'effort du personnel. rences of diameter in the case of material rolled into bars, which makes it possible to reduce staff effort. Le dessin représente à titre d'exemple une coupe transversale d'une pince de bout avant conforme à l'invention. The drawing shows by way of example a cross section of a front end clamp according to the invention. L'huile de pression produite dans un appareil à pression d'huile est amenée au travers du carter d'amenée 1 directement au corps rotatif 2 du mandrin. Ce corps de mandrin 2 sert de cylindre pour le piston de pince 3 présentant la forme d'une douille de serrage. A l'intérieur de ce piston de pince sont logées des machoires de serrage 4. Suivant la forme d'exécution représentée, le piston 3 est pourvu d'une couronne supplémentaire 5, tandis que le cylindre 2 reçoit aussi une couronne semblable 6. Pressure oil produced in an oil pressure apparatus is supplied through the supply housing 1 directly to the rotating body 2 of the mandrel. This mandrel body 2 serves as a cylinder for the gripper piston 3 having the shape of a clamping sleeve. Clamping jaws 4 are housed inside this clamp piston. According to the embodiment shown, piston 3 is provided with an additional crown 5, while cylinder 2 also receives a similar crown 6. On obtient de cette façon deux chambres de cylindre 7 et 8 qui, lors du serrage, sont alimentées. L'huile de pression nécessaire au serrage est amenée par la tuyauterie 9 et arrive par un canal correspondant 10, aussi bien derrière la couronne 5 que dans la chambre de cylindre 7 en vue d'agir directement ici sur la surface du piston 3. On obtient ainsi une action en tandem. Pour le desserrage, l'huile de pression est amenée par le canal 11 dans la chambre de cylindre 12, de sorte que, lors du desserrage, il ne se produit qu'une action unique. In this way, two cylinder chambers 7 and 8 are obtained which, during tightening, are supplied. The pressure oil required for tightening is brought through pipe 9 and arrives through a corresponding channel 10, both behind the crown wheel 5 and in the cylinder chamber 7 with a view to acting here directly on the surface of the piston 3. A tandem action is thus obtained. For loosening, the pressure oil is fed through channel 11 into the cylinder chamber 12, so that when loosening only a single action occurs. REVENDICATIONS. CLAIMS. 1. Pince pour arbre de tour et analogue actionnée par pression d'huile, caractérisée en ce que, directement dans le carter d'amenée d'huile (1) sont disposés le cylindre tournant (2) servant de corps de mandrin et, dans ce dernier, le piston de pince (3) mobile servant de douille de serrage et agissant directement sur les machoires de serrage.(4). 2. Pince suivant revendication 1, caractérisée en ce que le piston de pince (3) et le cylindre (2), en vue de former une deuxième chambre cylindrique alimentée lors du serrage, sont pourvus de couronnes addition- 1. Clamp for lathe shaft and the like actuated by oil pressure, characterized in that, directly in the oil supply housing (1) are arranged the rotating cylinder (2) serving as the chuck body and, in the latter, the movable clamp piston (3) serving as a clamping sleeve and acting directly on the clamping jaws. (4). 2. Gripper according to claim 1, characterized in that the gripper piston (3) and the cylinder (2), in order to form a second cylindrical chamber supplied during the tightening, are provided with addition rings. <EMI ID=2.1> <EMI ID = 2.1>
BE560658D 1956-11-30 1957-09-07 BE560658A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE355009X 1956-11-30

Publications (1)

Publication Number Publication Date
BE560658A true BE560658A (en) 1957-09-30

Family

ID=6289846

Family Applications (1)

Application Number Title Priority Date Filing Date
BE560658D BE560658A (en) 1956-11-30 1957-09-07

Country Status (3)

Country Link
BE (1) BE560658A (en)
CH (1) CH355009A (en)
FR (1) FR1182887A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4460200A (en) * 1981-06-25 1984-07-17 Air-Mo Hydraulics, Inc. Hydraulic chuck with improved seal
US4999002A (en) * 1990-08-15 1991-03-12 Anton Fink High speed chuck apparatus

Also Published As

Publication number Publication date
CH355009A (en) 1961-06-15
FR1182887A (en) 1959-06-30

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