Method for processing internally-expanding clamping fixture head

Abstract

The invention discloses a processing method of a chuck of an internal expanding clamp; the internal structure of the chuck of the internal expanding clamp consists of two tapers, Alpha1 and Alpha 2, and an inner bore Phi; the two tapers, Ahpha1 and Alpha 2, are respectively positioned at two ends of the chuck and are parallel, and the distance between the two tapers is L; the processing steps include blanking, rough lathing of the chuck, hardening and tempering, finish lathing of the chuck, heat treatment, grinding, and the like; the key points in the processing of the tapers, Alpha1 and Alpha 2, of the chuck of internal expanding clamp are as follows: 1. rough lathing and finish lathing of the internal shape of the chuck; 2. one-time clamping and simultaneous lathing of the two tapers of Alpha1 and Alpha 2; 3. lathe machining of the inner size of the chuck; 4. after quenching the chuck, using a grinding rod specially used for the chuck to grind the chuck tapers of Alpha1 and Alpha 2. The method can solve the problem that the parallel tapers, Alpha1 and Alpha 2, at the two internal ends of the chuck of the internal expanding clamp, are difficult to process, thus guaranteeing the precision of the chuck of the internal expanding clamp.

Description

technical field [0001] The processing method belongs to the field of collet processing. It specifically relates to the processing of internal expansion fixture chucks. Background technique [0002] The spring collet is an elastic split sleeve, which uses its elastic deformation to clamp the workpiece centrally. It has a simple structure and low precision. The machining accuracy (runout) of the workpiece is 0.075-0.15mm. If the machining accuracy of the workpiece is required to be high, ordinary spring collets cannot guarantee it. The chuck of the internal expansion fixture has a novel structure and high precision, and the machining accuracy of the workpiece can reach 0.05mm, but the parallel taper at both ends of the chuck α 1 and alpha 2 Processing is particularly difficult, and the position accuracy of the taper at both ends is too poor during processing, so the accuracy of the chuck cannot be guaranteed. Contents of the invention [0003] The present invention propos...

AI Technical Summary

Problems solved by technology

[0003] The present invention proposes a processing method for the chuck of the internal expansion fixture, the purpose of which is to solve the problem of parallel taper α at both ends of the chuck of the internal expansion clamp 1 and alpha 2 The problem of difficult processing, so as to ensure the accuracy of the chuck of the internal expansion fixture

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