Automatic centering and clamping device

A clamping device and automatic centering technology, applied in the direction of expansion mandrel, etc., can solve the problems of workpiece and expansion sleeve rotation, affecting workpiece processing, cumbersome operation, etc., to ensure processing accuracy, reduce labor intensity, and expand evenly Effect

Inactive Publication Date: 2012-07-25
SUZHOU TANGFENG ELECTRICAL APPLIANCE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But when it is used, the workpiece must be located on the side of the mandrel close to the chuck, and the workpiece cannot cover the adjusting nut, otherwise it will not be easy to twist, so that the end face of the workpiece is not very convenient to process; moreover, when the adjusting nut rotates, The middle part of the expansion sleeve expands first, so that between the workpiece and the inner wall of the expansion sleeve, only the middle section is fixed and fixed, and both sides are empty, and the clamping force is not enough, it is easy to cause rotation between the workpiece and the expansion sleeve, affecting the workpiece In addition, the clamping of the workpiece is controlled by manually turning the nut, which increases the labor intensity of the operator and makes the operation more cumbersome

Method used

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Embodiment Construction

[0012] The present invention is described below in conjunction with accompanying drawing.

[0013] attached figure 1 It is an automatic centering clamping device according to the present invention, which includes a mandrel 9 and a carcass 6; the mandrel 9 is a cylinder, and one end of the mandrel 9 is fixed on the chuck 1; the bulge The carcass 6 is cylindrical, and the carcass 6 is sleeved on the mandrel 9; the inner sidewall of the carcass 6 is pasted on the mandrel 9; shaped cavity 8, and an air inlet 4 is arranged on one side of the chuck 1 on the expanded carcass 6; the air inlet 4 communicates with the cavity 8, and the outside of the air inlet 4 is connected to the air inlet pipe 2. The inlet pipe 2 is provided with a valve 3; the mandrel 9 is a stepped cylinder, and the diameter of one end of the mandrel 9 fixed on the chuck 1 is larger than the diameter of the other end.

[0014] When in use, put the workpiece 5 on the inflatable carcass 6, install the air intake pi...

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PUM

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Abstract

The invention discloses an automatic centering and clamping device, which comprises a cylindrical mandrel and a cylindrical expansion mould. One end of the mandrel is fixed onto a chuck, the expansion mould is sleeved on the mandrel, a cavity with an annular section is arranged inside the expansion mould, an air inlet hole is arranged on one side of the expansion mould positioned on the chuck and is communicated with the air inlet hole, an air inlet pipe is connected outside the air inlet hole, and a valve is arranged on an air inlet pipe. The automatic centering and clamping device is used for clamping and fixedly machining a workpiece, the operation is extremely convenient, the labor intensity of operators is reduced, and workpiece clamping efficiency and workpiece machining precision are improved.

Description

technical field [0001] The invention relates to an auxiliary device for processing mechanical parts, in particular to an automatic centering clamping device for a sleeve-shaped thin-walled workpiece, and belongs to the technical field of mechanical processing auxiliary devices. Background technique [0002] In mechanical processing, for some thin-walled cylindrical workpieces, in order to avoid deformation of the workpiece when the chuck is clamped, a sleeve is generally put on the outside of the workpiece and then clamped to the chuck for processing. Although the deformation problem of the workpiece is solved, the centering of the workpiece after clamping is not accurate, resulting in low precision of the processed workpiece and high scrap rate. To this end, people in the industry have made a lot of efforts. For example, the Chinese patent application number is 201110286659.4, which is an invention patent named a self-centering fixture, which discloses a fixture for fixing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B31/40
Inventor 唐祥根
Owner SUZHOU TANGFENG ELECTRICAL APPLIANCE
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