A method and device for wire electrode discharge-turning composite dressing of diamond rotary grinding wheel

Abstract

The invention discloses a diamond rotation body grinding wheel line electrode discharging and turning compound dressing method and device, and belongs to the field of machining. The dressing method includes the steps: S1, setting a tool, switching on a pulse power supply, controlling a diamond grinding wheel to rotate, reciprocating movement and feed movement of the diamond grinding wheel relative to a tool line electrode, and continuing feeding after a discharge current signal is monitored; S2, softening metal-based materials of a projection of the diamond grinding wheel and corroding parts of the metal-based materials under the discharge action; S3, turning and peeling exposed diamond particles by the aid of the relative reciprocating movement of the diamond grinding wheel and the tool line electrode; S4, repeating the steps S2 and S3; S5, judging shape modification conditions according to discharge waveforms; S6, stopping approaching movement of the diamond grinding wheel and the tool line electrode, and dressing the diamond grinding wheel under the discharge action. Line electrode discharge and turning are synchronously performed, the diamond grinding wheel with low circular run-out and a sharp surface is rapidly prepared, and machining efficiency and accuracy are high.

Description

technical field [0001] The invention relates to a grinding wheel dressing method and device, more specifically, to a diamond rotary grinding wheel wire electrode discharge-turning composite dressing method and device. Background technique [0002] Diamond grinding wheels are widely used in the field of mechanical processing due to their high bonding strength and strong holding force. However, due to the forming process of the high-temperature sintered diamond grinding wheel, there is a large circular runout error in the finished product, which affects the grinding precision and restricts its application in the field of grinding. [0003] In response to the above problems, many scholars have carried out a lot of research on the dressing of diamond grinding wheels, and successively proposed the diamond pen turning dressing method, rolling dressing method, grinding dressing method, electrolytic correction method, etc. The surface of the grinding wheel trimmed by the diamond pe...

AI Technical Summary

Problems solved by technology

This application solves the dressing problem of metal-bonded superabrasive grinding wheels, especially coarse-grained metal-bonded superabrasive grinding wheels to a certain extent, and its shaping accuracy can reach 6 μm; however, the time for dressing by this method is very long , the efficiency is very low, and because the time of rolling and discharge is inconsistent, the discharge softening effect cannot be seamlessly combined with the mechanical action, and because the shape change of the tool electrode due to discharge corrosion during the discharge machining process is not considered, and It leads to uneven discharge and shape accuracy errors, which makes it difficult to achieve stable and high-precision trimming, so it is difficult to achieve popularization and application

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