Superfinishing method for outer circle of high-precision cylindrical part

Abstract

Provided is a superfinishing method for the outer circle of a high-precision cylindrical part. A machining device for achieving the superfinishing method comprises an upper grinding disc, a holder and a lower grinding disc, wherein the holder is located between the upper grinding disc and the lower grinding disc, the rotating shaft of the upper grinding disc and the rotating shaft of the lower grinding disc are coaxially arranged, a certain offset distance exists between the axial line of holder and the upper grinding disc and between the axial line of the holder and the lower grinding disc, and the holder is connected with a holder driving crank shaft. The upper grinding disc, the lower grinding disc, the holder and the holder driving crank shaft can all independently rotate according to the respective speeds. A cylindrical part to be machined is arranged on a working position of the holder, the center of the holder carries out obit motion around the rotating shaft of the upper grinding disc and the rotating shaft of the lower grinding disc under the driving of the holder driving crank shaft, and meanwhile the holder maintains spin notion around the center of the holder. The cylindrical part carries out complex space rolling and rotational motion under the driving of the holder, the upper grinding disc and the lower grinding disc. Machining load is applied to the cylindrical part through the upper grinding disc. Superfinishing is carried out on the outer circle of the cylindrical part by matching the plane of the upper grinding disc and the plane of the lower grinding disc with grinding materials. According to the superfinishing method for the outer circle of the high-precision cylindrical part, evenness and machining uniformity are good.

Description

Technical field [0001] The invention relates to a method for processing the outer circle of a cylindrical part, in particular to a method for processing the outer circle of a cylindrical part based on double-plane grinding. Background technique [0002] Bearings are important and key basic components in the equipment manufacturing industry, which directly determine the performance, quality and reliability of major equipment and host products, and are known as the "heart" components of equipment manufacturing. As the key parts of the bearing, the precision and consistency of the precision cylindrical parts play a vital role in the working performance and service life of the bearing. [0003] At present, the mass processing of cylindrical parts generally adopts centerless grinding at home and abroad. It is a kind of grinding processing with an uncentered workpiece. There is no need to clamp and locate the workpiece during processing. The processing efficiency is high and it can be us...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of poor uniformity and poor processing consistency of existing cylindrical parts outer circle processing methods, the present invention provides a high-precision outer circle superfinishing of cylindrical parts with good uniformity and good processing consistency method

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