a centering fixture

Abstract

The invention discloses a centering clamp. A clamp body is made of spring steel. A center hole of the clamp body is a two-section-type combining hole and is formed by a thread hole section on the left and an oil injection hole section on the right in a connecting mode. The diameter of the oil injection hole section is larger that the diameter of the thread hole section. An oil inlet end of a pressure relief pipe is connected to the thread hole section of the center hole of the clamp body. A pressure relief valve is arranged on the pressure relief pipe. The clamp body is of a four-section type stepped shaft structure which comprises a first cylinder section, a second cylinder section, a third cylinder section and a fourth cylinder section from left to right in sequence. The length of the first cylinder section is 1 / 2-2 / 3 of the length of the clamp body. The position of the first cylinder section corresponds to the thread hole section of the center hole of the clamp body and the left portion of the oil injection hole section. At least three sinking table holes are evenly distributed in the periphery direction of the third cylinder section of the clamp body and are formed in the axial direction of the clamp body, and the sinking table holes become small from left to right. A workpiece can be subjected to centering effectively, centering accuracy is high, and pressure adjusting is convenient and quick.

Description

technical field [0001] The invention belongs to the field of tooling fixtures, in particular to a centering fixture. Background technique [0002] In the processing of the outer bevel or tooth shape of the gear, the workpiece needs to be centered first. At present, the polished rod is generally used to center the workpiece. Since there is a clearance fit between the polished rod and the center hole of the workpiece, the workpiece cannot be centered effectively, and the centering accuracy is poor, resulting in the eccentricity of the processed outer cone, which cannot meet the processing accuracy requirements. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a centering fixture with high centering precision. [0004] The technical scheme of the present invention is as follows: a centering clamp is characterized in that: it comprises a clamp body (1) and a pressure relief pipe (2), wherein the material of the clamp...

AI Technical Summary

Problems solved by technology

Due to the gap fit between the polished rod and the center hole of the workpiece, the workpiece cannot be centered effectively, and the centering accuracy is poor, resulting in the eccentricity of the outer cone after processing, which cannot meet the processing accuracy requirements.

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