Polishing method based on self-excited oscillation and force rheology composite effect of polishing solution

Abstract

A polishing method based on self-excited oscillation of a polishing solution and a force rheology composite effect is used for polishing the inner wall of a pipe fitting, during polishing, the force rheology polishing solution flows through a pipe, the rheology effect is generated due to the shearing effect, a flexible grinding tool is formed on the interface of the force rheology polishing solution and a workpiece, and the inner wall of the pipe fitting is subjected to material removal; during polishing, after the force rheological polishing liquid in the liquid supply pipeline is increased to high pressure, the force rheological polishing liquid passes through the self-excited oscillation device, so that the force rheological polishing liquid has a self-excited oscillation phenomenon and enters a workpiece to be machined, periodic fluctuation of speed and pressure occurs on the inner surface of the workpiece, meanwhile, vibration is applied to the workpiece, and the rheological effect of the force rheological polishing liquid is enhanced. By means of the method, efficient polishing machining of the inner wall of the pipe fitting can be achieved, and the workpiece with low surface roughness and low/no surface damage or subsurface damage is obtained.

Description

technical field [0001] The invention belongs to the field of ultra-precision machining, and relates to a polishing method based on the composite effect of self-excited oscillation and force rheology of polishing fluid, which can realize ultra-precision machining of the inner wall of a pipe fitting with a large length-to-diameter ratio. Background technique [0002] Polishing technology is the main final processing method to reduce the surface roughness, remove the damaged layer, and obtain a smooth and damage-free surface. It has always been the most important method of ultra-precision processing. Among various surface polishing methods, it is generally difficult to polish the inner surface of the workpiece, especially for the inner surface of the pipe with a relatively large length and diameter, it is difficult for the polishing tool to fully enter it, and it is difficult to polish it accurately, and it is also difficult to achieve surface Uniformity of polishing. [0003]...

AI Technical Summary

Problems solved by technology

However, it is difficult for mechano-rheological polishing fluid to produce a strong mechano-rheological effect at the interface between the polishing fluid and the pipe wall. At present, it is not yet possible to achieve high-efficiency rheological polishing of the pipe wall.

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