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Internal expanding chuck

A technology of expansion chuck and chuck, which is applied in the field of internal expansion chuck equipment, can solve the problems of low repeat positioning accuracy and easy to pinch the workpiece, and achieve the effects of reducing damage, high repeat positioning accuracy, and increasing the contact area

Pending Publication Date: 2018-02-27
NINGBO FENGZHOU MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an internal expansion chuck to alleviate the technical problems of the existing chucks in the prior art, which are easy to pinch the workpiece and have low repeat positioning accuracy

Method used

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Embodiment Construction

[0036] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top", "bottom" etc. are based on the Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus...

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Abstract

The invention relates to the technical field of internal expanding chuck equipment, in particular to an internal expanding chuck. The internal expanding chuck comprises a chuck body, an annular integrated expanding sleeve and a push-pull assembly, wherein the integrated expanding sleeve comprises at least two fan-shaped clamping jaws and at least two elastic structural components; one elastic structural component is fixedly connected between every two adjacent fan-shaped clamping jaws; the chuck body is connected with a machine tool; a conical shaft is arranged at the top part of the chuck body; the conical shaft is in a conical shape or a circular truncated cone shape; the integrated expanding sleeve is arranged on the conical shaft in a sleeving way; the inner side wall of the integratedexpanding sleeve is matched with the conical shaft in a sliding way; the outer side wall of the integrated expanding sleeve is in a cylindrical surface shape which is coaxial with the conical shaft;the outer side wall of the integrated expanding sleeve can be fitted with an inner circle of a workpiece; the push-pull assembly is used for pulling and limiting the integrated expanding sleeve to move along the axis of the conical shaft. According to the internal expanding chuck provided by the invention, the damage to the workpiece is reduced, the repeated positioning accuracy is high, and the service life is longer.

Description

technical field [0001] The invention relates to the technical field of internal expansion chuck equipment, in particular to an internal expansion chuck. Background technique [0002] When using a machine tool to process a workpiece, the chuck is usually used to clamp the workpiece first for subsequent processing operations. [0003] Wherein, for workpieces that need to be clamped internally, the existing chucks basically use claws on the chucks to clamp the workpieces. However, the existing jaws have a small contact area with the surface of the workpiece when clamping the workpiece, and it is easy to pinch the clamped workpiece; in addition, when replacing the workpiece on the jaws, the positioning position of the jaws is easily damaged. Changes, resulting in low repeat positioning accuracy, increasing the probability of workpiece damage. [0004] To sum up, how to overcome the above-mentioned defects of the existing chucks is a technical problem to be solved urgently by t...

Claims

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Application Information

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IPC IPC(8): B23B31/40
CPCB23B31/4066
Inventor 覃泽乐
Owner NINGBO FENGZHOU MACHINERY
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