关键词: 工程陶瓷, 轴向磨削, 小砂轮, 出油阀, 磨损

Abstract:

Axial grinding is a processing method to grind cylindrical workpiece or inner surface of hole along their axis, using the kinetic energy of high-speed rotation diamond small grinding wheel, the abrasives in tool tip were as the main cutting edge to remove materials and the abrasives in the outside surface of tool were as a minor cutting edge to sharpen the processed surface. And the cutting thickness and feed rate could be more than 5~10mm and 200mm/min respectively in a cutting pass, realizing high-efficiency, low-cost processing of engineering ceramics. Using the method, the ceramic sleeve of delivery valve precision coupling components in the engine was processed with high efficiency, and grinding wheel wear was researched with single factor test. The results indicate that grinding wheel wear increases with the increase of cutting depth, but not a linear relation, and in order to minimize tool wear the ratio of spindle speed and workpiece speed should be within a certain range.

Key words: engineering ceramics, axial grinding, small grinding wheel, delivery valve, wear