CN202742068U

CN202742068U - Collet chuck

Info

Publication number: CN202742068U
Application number: CN 201220385569
Authority: CN
Inventors: 孙贤青
Original assignee: Changzhou Beidefu Machinery Science & Technology Co Ltd
Current assignee: BEIDEFU MECHANICS AND TECHNOLOGY (CHANGZHOU) CO., LTD.
Priority date: 2012-08-06
Filing date: 2012-08-06
Publication date: 2013-02-20
Anticipated expiration: 2022-08-06

Abstract

The utility model discloses a collet chuck which comprises a cylinder body, a piston and a conical cover, wherein the cylinder body is fixedly connected with the conical cover in a sealing manner; the piston is arranged between the cylinder body and the conical cover; a first chamber is arranged between the rear end of the piston and the cylinder body; a second chamber is arranged between the front end of the piston and the conical cover; a piston rod arranged at the front end of the piston extends to the inside of a chamber of the conical cover and is matched with a center hole of the conical cover in a sliding and sealing manner; the rear end of the piston extends out of a baffle of the cylinder body and is matched with a center hole of the baffle in a sliding and sealing manner; a collet is arranged in the chamber of the conical cover; an outer conical surface arranged on the collet is matched with the inner wall of the conical cover in a sliding manner; the piston rod arranged at the front end of the piston is fixedly connected with the collet; a first channel communicated with the first chamber is arranged on the baffle; and a second channel communicated with the second chamber is arranged on the piston. The collet chuck disclosed by the utility model has the advantages of favorable sealing property, simple structure, convenience in mounting, great clamping force and high processing efficiency.

Description

Collet chuck

Technical field

The utility model relates to a kind of a kind of revolution clamping device that uses on lathe and other plant equipment that is installed in.

Background technology

The collet chuck chuck is widely used at lathe and other plant equipment, but existing collet chuck chuck is because its reasons in structure is easy to produce the problem of gas leakage, not only complex structure, installation inconvenience, and clamping force is also little simultaneously, and the efficient of processing work is very low.

Summary of the invention

The purpose of this utility model is to provide a kind of good airproof performance, while clamping force simple in structure, easy for installation is large, working (machining) efficiency is high collet chuck.

In order to achieve the above object, the technical solution of the utility model is: a kind of collet chuck, comprise cylinder body, piston, cone lid, cylinder body is sealedly and fixedly connected with the cone lid, piston is installed between cylinder body and the cone lid, has the first chamber between piston rear end and the cylinder body, has the second chamber between piston nose and the cone lid, the piston rod that described piston nose has extends in the cavity of cone lid and with the centre bore slipper seal of cone lid and cooperates, and piston rear end stretches out outside the baffle plate of cylinder body and with the centre bore slipper seal of baffle plate and cooperates; In the cavity of described cone lid chuck is housed, the male cone (strobilus masculinus) that chuck has covers inwall with cone and is slidingly matched; The piston rod that described piston nose has is fixedly connected with chuck; Have the first passage that communicates with the first chamber on the described baffle plate, have the second channel that communicates with the second chamber on the piston.

Described cone lid has inner conical surface, and the male cone (strobilus masculinus) of inner conical surface and chuck is slidingly matched.

On the described piston rotation prevention pin shaft is housed, cone covers has blind hole, and rotation prevention pin shaft and blind hole are slidingly matched.

Has through hole on the described piston.

Adopt after the said structure, piston nose directly has piston rod, owing to having adopted the piston of integral type, not only process, install better convenience, have the first passage that communicates with the first chamber on the described baffle plate, have the second channel that communicates with the second chamber on the piston, such structure has not only been simplified the structure between each passage and the chamber greatly, the simultaneously processing better convenience of getting up, the utility model good airproof performance, while clamping force simple in structure, easy for installation is large, working (machining) efficiency is high.

Description of drawings

The embodiment that provides below in conjunction with accompanying drawing is described in further detail the utility model.

Fig. 1 is the structural representation of a kind of state of the utility model;

Fig. 2 is the structural representation of the another kind of state of the utility model.

The specific embodiment

As shown in Figure 1, 2, a kind of collet chuck, comprise that cylinder body 1, piston 2, cone cover 3, cylinder body 1 covers 3 with cone and is sealedly and fixedly connected, piston 2 is installed in cylinder body 1 and cone covers between 3, has the first chamber 4 between piston 2 rear ends and the cylinder body 1, piston nose and cone have the second chamber 5 between covering 3, the piston rod 2-1 that described piston 2 front ends have extends that cone cover in 3 the cavity 3-1 and covers 3 centre bore 3-2 slipper seal and cooperate with boring, and piston 2 rear ends are stretched out outside the baffle plate 1-1 of cylinder body 1 and with the centre bore 1-2 slipper seal of baffle plate 1-1 and cooperated; In the cavity 3-1 of described cone lid 3 chuck 6 is housed, the male cone (strobilus masculinus) 6-1 that chuck 6 has covers 3 inwalls with cone and is slidingly matched; The piston rod 2-1 that described piston 2 front ends have is fixedly connected with chuck 6; Have the first passage 4-1 that communicates with the first chamber 4 on the described baffle plate 1-1, have the second channel 5-1 that communicates with the second chamber 5 on the piston 2.

As shown in Figure 1, 2, described cone lid 3 has inner conical surface 3-3, and the male cone (strobilus masculinus) 6-1 of inner conical surface 3-3 and chuck 6 is slidingly matched.

As shown in Figure 1, 2, on the described piston 2 rotation prevention pin shaft 7 is housed, cone covers has blind hole 3-4 on 3, and rotation prevention pin shaft 7 is slidingly matched with blind hole 3-4.

As shown in Figure 1, 2, has through hole 2-2 on the described piston 2.

As shown in Figure 1, 2, operation principle of the present utility model is as follows: the piston rod 2-1 that has by piston 2 front ends drives chuck 6 and does and advance or setback, comes so that collet chuck is realized clamping and the workpiece that unclamps.

Claims

1. collet chuck, comprise cylinder body (1), piston (2), cone lid (3), cylinder body (1) is sealedly and fixedly connected with cone lid (3), piston (2) is installed between cylinder body (1) and the cone lid (3), has the first chamber (4) between piston (2) rear end and the cylinder body (1), has the second chamber (5) between piston nose and the cone lid (3), the piston rod (2-1) that described piston (2) front end has extends in the cavity (3-1) of cone lid (3) and with centre bore (3-2) slipper seal of cone lid (3) and cooperates, and piston (2) rear end is stretched out outside the baffle plate (1-1) of cylinder body (1) and with centre bore (1-2) slipper seal of baffle plate (1-1) and cooperated; In the cavity (3-1) of described cone lid (3) chuck (6) is housed, the male cone (strobilus masculinus) (6-1) that chuck (6) has is slidingly matched with cone lid (3) inwall; The piston rod (2-1) that described piston (2) front end has is fixedly connected with chuck (6), it is characterized in that: have the first passage (4-1) that communicates with the first chamber (4) on the described baffle plate (1-1), have the second channel (5-1) that communicates with the second chamber (5) on the piston (2).

2. collet chuck according to claim 1 is characterized in that: described cone lid (3) has inner conical surface (3-3), and inner conical surface (3-3) is slidingly matched with the male cone (strobilus masculinus) (6-1) of chuck (6).

3. collet chuck according to claim 1 is characterized in that: rotation prevention pin shaft (7) is housed on the described piston (2), has blind hole (3-4) on the cone lid (3), rotation prevention pin shaft (7) is slidingly matched with blind hole (3-4).

4. collet chuck according to claim 1 is characterized in that: have through hole (2-2) on the described piston (2).