A positioning fixture for star sleeve

Abstract

The invention discloses a positioning clamp for a star-like sleeve, and relates to the technical field of positioning clamps. According to the technical scheme, the positioning clamp is characterizedby comprising a box body, a round cavity, a first round through hole, a fixing base, installation grooves, a screw disc, three sliding grooves and sliders. Three first strip-like through holes are uniformly distributed in one side of the box body; matching assemblies are arranged between the sliders and the screw disc respectively; a driving device is arranged between the box body and the round cavity; a fixing disc is fixed to the top of the box body, and three press pieces are uniformly distributed on the peripheral surface; the tops of the sliders are fixedly provided with fixing boxes respectively, and fixing pieces are slidably arranged in the fixing boxes; springs are fixedly arranged on the tops of the fixing pieces, and the tops of the springs are fixedly connected with the top faces of the fixing boxes; the press pieces are slidably connected with the fixing boxes in the radical direction of the box body; first press assemblies are arranged between the press pieces and the fixing pieces. By means of the positioning clamp, the problem that the precision of processing the star-like sleeve is affected is solved, and the effect of improving the precision of processing the star-like sleeve is achieved.

Description

technical field [0001] The invention relates to the technical field of positioning fixtures, more specifically, it relates to a positioning fixture for star sleeves. Background technique [0002] At present, after the forging of the star sleeve is completed, subsequent clamping and turning processing are required. The existing processing method is to clamp the outer circular edge of the star sleeve with a three-jaw chuck and process the inner circular hole. [0003] The prior art can refer to the Chinese invention patent with the authorized announcement number CN208772497U, which discloses a pneumatic three-jaw chuck for CNC lathes, including a three-jaw chuck main body, and a circle of rotation angle marks is arranged on the periphery of the three-jaw chuck main body. The inner surface of the front side of the three-jaw chuck main body is fixedly equipped with a plurality of three-jaw chuck fastening screws, and the outer surface of the front side of the three-jaw chuck mai...

AI Technical Summary

Problems solved by technology

[0004] However, since the outer circular edge of the star sleeve is used as a reference to process the inner hole, if the center position of the star sleeve held by the three-jaw chuck is skewed during the processing, the processed inner hole will not be located The center of multiple arc-shaped grooves leads to inconsistencies in the size of different arc-shaped grooves when the arc-shaped grooves are processed according to the inner circular hole, which affects the processing accuracy of the star sleeve

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