Method of machining end face circular arc grooves by using steel ball rolling and grinding and end face circular arc grooves

Abstract

The invention provides a method using steel balls for rolling and grinding a circular arc-shaped groove of an end surface. The method comprises the following steps of 1, cutting a to-be-cut structure part, and processing the circular arc-shaped groove of the end surface at the use end opening of the to-be-cut structure part; 2, performing heat treatment on the to-be-cut structure part; 3, correcting the jumping of the to-be-cut structure part, and putting the steel balls into the circular arc-shaped groove to roll and grind; 4, polishing the circular arc-shaped groove of the end surface. The method has the advantages that the accuracy of the profile of the processed R0.2 circular arc-shaped groove is high, and the surface roughness value is small; the uniformity and stability of product sizes are guaranteed; the operation is simple, the reworking of the profile is easy, the production cycle is shortened, and the processing cost and processing efficiency of the structure part of the product are effectively improved.

Description

technical field [0001] The invention relates to rolling grinding processing, in particular to a method for rolling and grinding end face circular arc grooves using steel balls and the end face circular arc grooves. Background technique [0002] The arc groove on the end face is a special tool for processing the valve edge of the corresponding size. The valve edge is an important component of the sealing pair of the valve and the steel material structure. Its shape structure, shape and position tolerance, and surface roughness are important indicators that affect the sealing performance of the valve. However, the existing non-standard cutting edge has the phenomenon that the cutting edge indentation does not overlap after repeated work, which leads to the widening of the contact surface and finally affects the sealing performance of the entire product. The circular arc cutting edge processed by the utility model can improve the coincidence of the indentation of the valve cor...

AI Technical Summary

Problems solved by technology

The present invention solves the problem of the low accuracy of the R0.2 end surface arc groove with the minimum aperture of ￠1mm obtained in the prior art, and the difficulty in processing; the R0.2 arc profile has low precision, poor surface roughness, and fast wear short lifespan

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