超声磨削陶瓷表面刀痕系统振子的仿真及试验研究  

Simulation and experiment on vibrator of ultrasonic grinding ceramic surface tool mark system

作　　者：刘军[1] 张清荣 李风[1] 张永俊[2] 马世赫 刘桂贤 LIU Jun;ZHANG Qing-rong;LI Feng;ZHANG Yong-jun;MA Shi-he;LIU Gui-xian(School of Materials and Energy,Guangdong University of Technology,Guangzhou 510006,China;School of Mechanical and Electrical Engineering,Guangdong University ofTechnology,Guangzhou 510006,China)

机构地区：[1]广东工业大学材料与能源学院,广东广州510006 [2]广东工业大学机电工程学院,广东广州510006

出　　处：《机电工程》2021年第2期177-183,233,共8页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51705088)。

摘　　要：针对平面陶瓷在普通机械磨削加工过程中产生的刀痕技术问题,提出了一种超声辅助磨削去除陶瓷表面刀痕的加工方法。通过COMSOL Multiphysics对超声振子进行了模态仿真,利用阻抗分析仪对超声振子性能进行了阻抗参数测试,利用激光测振仪测试了不同电参数条件下磨削工具头端面位置的振幅,以及同一横截面的振幅稳定性能;在不同加工功率条件下,对陶瓷的超声平面磨削进行了单因素试验研究,并分析了加工功率对陶瓷表面粗糙度的影响效果。研究结果表明:振子振型、振幅与仿真高度一致,阻抗、振幅等性能参数稳定;经超声磨削试验加工的陶瓷面粗糙度Sq、面偏差程度Ssk大幅降低,陶瓷表面光洁度显著提升;该方法可实现稳定、高精度的陶瓷平面磨削加工。Aiming at the technical problem of the tool marks produced in ordinary mechanical grinding of planar ceramics, a method for ultrasonic-assisted grinding to remove tool marks on the ceramic surface was proposed. The modal simulation of the ultrasonic vibrator was carried out by using COMSOL Multiphysics. The impedance parameters of the ultrasonic vibrator were tested by an impedance analyzer. The amplitude of the end face of the grinding tool head under different electrical parameters and the stability of the same cross section were tested by laser vibrometer. A single factor experimental study was conducted on the ultrasonic surface grinding of ceramics at different processing powers, and the effect of machine power on the surface roughness of ceramics was analyzed.The results show that the vibration mode and amplitude are highly consistent with the simulation, and the performance parameters such as impedance and amplitude are stable.The roughness Sq and surface deviation Ssk of the processed ceramic surface are greatly reduced by grinding test, and the surface finish of ceramics is significantly improved. The method can realize stable and high-precision ceramic surface grinding.

关 键 词：COMSOL仿真 超声平面磨削 振幅 粗糙度 

分 类 号：TH161.1[机械工程—机械制造及自动化] TG74[金属学及工艺—刀具与模具]