Structure of valve sleeve turning fixture

Abstract

The invention discloses a structure of a valve sleeve turning fixture. The structure comprises a positioning sleeve, a clamping head and a clamping drive mechanism, wherein one end of the positioningsleeve is fixedly connected onto a clamp body, a bulge part is arranged axially at the other end of the positioning sleeve, the bulge part of the positioning sleeve is correspondingly matched with a step part of the end surface of a straight-port structure of the valve body, and a groove is formed in the end surface of a clamping head; when the valve body is clamped, the bulge part of the valve body is located in the groove, and the stress point of the clamping head for clamping the valve body is positioned on the valve body end surface on the periphery of the bulge part. According to structural design of the positioning sleeve and the clamping head which are located at two ends of the valve body, effective positioning is formed by the positioning sleeve and a straight port of the valve body, the groove in the end surface of the clamping head is used for preventing the bulge part at the end of the valve body from being damaged by clamping, two ends of the valve body are directly clamped by the positioning sleeve and the clamping head, and the clamping process is greatly simplified; moreover, the clamping structure is simple, positioning accuracy is high, and valve sleeve turning quality is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of railway vehicle parts processing, and in particular relates to a clamp structure for a valve body cover. Background technique [0002] For the turning processing of a certain valve body cover, one end of the valve body structure is a straight port, and the other end is a protruding part, and the protruding part is not allowed to bear force, so the clamping process of the valve body cover processing is very difficult. Inconvenient, and the clamping structure is complicated, and the positioning accuracy is not high, which affects the processing quality of the valve body. Contents of the invention [0003] The purpose of the present invention is to provide a valve body cover clamp structure with simple structure, high positioning accuracy and convenient clamping process in view of the above existing problems. [0004] The technical solution of the present invention is realized in the following way: a clam...

AI Technical Summary

Problems solved by technology

[0002] For the turning processing of a certain valve body cover, one end of the valve body structure is a straight port, and the other end is a protruding part, and the protruding part is not allowed to bear force, so the clamping process of the valve body cover processing is very difficult. It is inconvenient, and the clamping structure is complicated, and the positioning accuracy is not high, which affects the processing quality of the valve body

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