蓝宝石不同晶面轴向超声振动辅助磨削特性研究

摘要/Abstract

摘要： 选取蓝宝石的A面、C面、M面及R面开展轴向超声振动辅助磨削试验，并从磨削力、比磨削能、表面粗糙度及表面形貌等角度对比蓝宝石四个晶面超声振动辅助磨削效果的差异。施加超声振动辅助磨削时，蓝宝石四个晶面的磨削力、比磨削能及表面粗糙度相对未施加超声振动时均有所减小，且工件表面损伤裂纹较小，表面质量更好;蓝宝石不同晶面在施加超声振动时的磨削力、比磨削能和表面粗糙度的减小比例不同，C面的减小比例最小，M面和A面的减小比例较大，R面的减小比例最大;超声振动辅助磨削蓝宝石四个晶面时，R面的改善效果最好,其次是M面和A面，C面的改善效果较差,这反映工件材料的脆性越大，超声辅助磨削对加工质量的改善效果越明显。

关键词: 蓝宝石, 轴向超声振动辅助磨削, 磨削特性, 表面形貌

Abstract: AUAG test study was carried out on sapphire A-plane, C-plane, M-plane and R-plane, and the grinding characteristics of the four crystal surfaces of sapphire were compared with and without AUAG from the grinding forces, specific grinding energies, surface roughnesses and surface topography. The grinding forces, specific grinding energies and surface roughnesses of ultrasonic vibration assisted grinding are decreased when compared with that of general grinding, the surface damage cracks are small and the surface quality is better. However, when the ultrasonic vibration was applied to the different crystal surfaces of sapphire, the reduction rates of the grinding forces, specific grinding energies and surface roughnesses are different, the reduction rates of C-plane are the minimum, the reduction rates of M-plane and A-plane are larger, and the reduction rates of R-plane are the maximum. When ultrasonic vibration assisted grinding of four crystal surfaces of sapphire, the improvements effects of R-plane are the best, followed by the M-plane and A-plane, the improvement effect-ivenesses of C-plane are the minimum. This shows that the greater brittleness of workpiece material, the more obvious the effectiveness of ultrasonic assisted grinding on the machining quality.

Key words: sapphire, axial ultrasonic assisted grinding(AUAG), grinding characteristics, surface morphology

中图分类号:

TH145.9

胡中伟, 邵铭剑, 方从富, 于怡青, 徐西鹏, . 蓝宝石不同晶面轴向超声振动辅助磨削特性研究[J]. 中国机械工程.

HU Zhongwei, SHAO Mingjian, FANG Congfu, YU Yiqing, XU Xipeng, . Study on Characteristics of Axial Ultrasonic Assisted Grinding of Sapphire with Different Crystal Surfaces[J]. China Mechanical Engineering.

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