超声ELID复合磨削陶瓷材料高效去除机理的仿真研究

Simulation on mechanism of ceramic removal by ultrasonic ELID composite grinding

基于硬脆材料去除机理,结合超声振动辅助磨削过程中单颗磨粒的运动学分析,建立超声ELID(Electrolytic inprocessing Dressing)复合磨削条件下的材料去除率数学解析模型,并对模型进行分析和仿真。结果表明:材料去除率随切削深度、砂轮速度、超声振动振幅和频率的增大而增大;同等条件下,超声ELID复合磨削比ELID磨削时的材料去除率高,且分别在切削深度较大、砂轮速度较小时较明显;随超声振动振幅和频率的增大,材料去除率近似呈线性增长。

Based on the removal mechanism of hard brittle material and the kinematics analysis for single abrasive grit withultrasonic vibration,the mathematical model of material removal rate for ultrasonic ELID composite grinding was proposed. Themodel was analyzed and simulated. Simulation results show that material removal rate increases with the depth of cut,wheelspeed,the ultrasonic vibration amplitude and frequency increasing. Under the same conditions,the material removal rate ofultrasound ELID composite grinding is higher than that of ELID grinding,and it becomes more apparent at great cutting depthand low grinding wheel speed. With the increase of the ultrasonic vibration amplitude and frequency,the material removal rateincreases almost linearly.