Locking device for torque tool handle collet

Abstract

A locking device for a torque tool handle collet comprises a tool handle body, the collet and a worm wheel and worm mechanism. A central shaft hole is formed in the tool handle body. The collet is arranged in a conical cavity in the front end of the central shaft hole in a matched manner. A worm wheel in the worm wheel and worm mechanism is arranged in the middle of the central shaft hole. The worm wheel and the tool handle body are coaxially installed. A lengthening assembly is connected between the worm wheel and the collet in a threaded manner. A tool is locked or released through the worm wheel and worm mechanism, and therefore labor is saved, and replacement and adjustment are convenient. The lengthening assembly is arranged in the tool handle body; on one hand, the effective length of a tool handle can be increased, and replacement types of the worm wheel are reduced; and on the other hand, radial tightening force is converted into axial tensioning force exponentially, time and labor are saved during operation, and the locking device is simple and compact in structure and low in cost.

Description

technical field [0001] The invention belongs to the technical field of machine tools, and in particular relates to a torque tool holder collet locking device. Background technique [0002] In the tool holder system, the service life of high-precision tool holders is usually low, and the scope of application of high-precision tool holders is relatively small, most of which are only suitable for finishing machining, and are not easy to maintain. The diameter of the tool holding handle is too large to process deep holes or deep bottom surfaces. The existing tool holders on the market generally use worm gear mechanisms, which are expensive and have poor interchangeability. Usually, the tool holders are used to hold tools of different lengths. It is necessary to replace the type of worm wheel; and when the tool is locked or released, manual operation is laborious; at the same time, the handle of the worm gear mechanism is used, and the worm wheel is prone to locking during work, ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a torque tool handle collet locking device for the deficiencies of the prior art. An extension assembly is arranged in the tool handle body, which has strong interchangeability and can well solve the problem of the collet being locked or loosened. It is time-consuming and labor-intensive during operation, and it also solves the problem that the worm wheel is easy to lock when it is working, increasing the service life of the tool handle

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