A Triple-eccentric Butterfly Valve Disc Fixture with Laser Precise Positioning

Abstract

The invention provides a three-eccentricity butterfly valve and butterfly plate fixture achieving laser precision positioning. The fixture comprises a rotating hollow shaft, a main support frame, two external face adjusting mechanisms and four internal face adjusting mechanisms; the rotating hollow shaft is shaped like a hollow cylinder, and one end of the rotating hollow shaft is fixedly connected with the main support frame in the axial direction; a two-way emission laser indicator is installed in a hollow through hole of the rotating hollow shaft and can emit two laser beams to the two ends of the shaft hole of the rotating hollow shaft in a simultaneous or time-sharing mode; the rotating hollow shaft is fixedly connected to the outer side face of a main support cross plate, a center through hole is formed in the center position of the main support cross plate, and the center through hole corresponds to a shaft end hole of the rotating hollow shaft so that one laser beam emitted by the two-way emission laser indicator can penetrate through the center through hole to be shone on a butterfly plate to be machined. The three-eccentricity butterfly valve and butterfly plate fixture achieving laser precision positioning has the advantages that positioning is precise, clamping is reliable, adjustment is convenient, the adaptability is good, manufacturing is easy, and disassembling and assembling are flexible.

Description

technical field [0001] The invention belongs to the field of pump valve fixtures, in particular to a triple-eccentric butterfly plate fixture for precise laser positioning. Background technique [0002] The pump valve is a device in the fluid system that realizes mechanical energy conversion and controls fluid direction, pressure, and flow. It is widely used in various fields of the national economy such as petroleum, chemical industry, electric power, metallurgy, coal, national defense and military industry, municipal and civilian use, and farmland water conservancy. It is a general-purpose machinery. important parts of. [0003] There are three eccentricities in the structure of the triple eccentric butterfly valve, that is, there is an eccentricity e between the center of rotation of the disc and the center of the valve body; there is an eccentricity α between the center of rotation of the disc and the sealing surface of the disc; There is an eccentric angle β in the val...

AI Technical Summary

Problems solved by technology

[0005] In the process of laser cladding, it is necessary to clamp and fix the butterfly plate of the triple eccentric butterfly valve through a special fixture. The traditional fixture for processing the butterfly plate of the triple eccentric butterfly valve generally makes the center line of the cone coincide with the center line of the lathe’s rotation, such as the one used on the lathe. The special oblique mold for processing the oblique cone surface, but the manufacturing accuracy of this kind of fixture is very difficult to guarantee, and the cost is high

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