轴向超声波辅助磨削工程陶瓷边界损伤实验研究

摘要

针对磨削工程陶瓷时边界处易出现损伤缺陷的问题进行了研究,建立了基于磨削参数的边界损伤预测模型.采用单因素法进行了磨削实验,以边界损伤深度为参考对仿真结果进行验证,结果表明,磨削深度对边界损伤影响较大;主轴转速越低,边界损伤值越大,且随主轴转速升高边界损伤值的变化逐渐趋于平缓.与普通磨削相比,超声波辅助磨削能有效改善被加工材料的边界损伤情况.%A defective damage is prone to occurring at edges of engineering ceramic during a grinding process. Aiming at such problem, a prediction model was established for edge damage of engineering ceramics based on grinding parameters. A grinding test was conducted with single factor method, with the depth of edge damage as a reference for verification of the simulation result. Result showed that grinding depth had brought greater influence on the edge damage and a lower spindle speed resulted in the greater edge damage. In addition,the damage value would gradually tend to be steady with the increase of the spindle speed. Compared with the ordinary grinding, ultrasonic assisted grinding could effectively reduce the damage at the edge of processed materials.