先进陶瓷材料超声振动铣磨加工表面粗糙度仿真及实验(英文)  

Simulation and Experiment of Surface Roughness in Ultrasonic Vibration Mill-Grinding of Advanced Ceramics

作　　者：乔国朝[1,2] 周明[1] 黄劭楠[3] 

机构地区：[1]哈尔滨工业大学机电工程学院,哈尔滨150001 [2]东北林业大学机电工程学院,哈尔滨150040 [3]佳木斯大学应用技术学院,佳木斯154002

出　　处：《纳米技术与精密工程》2012年第6期555-562,共8页Nanotechnology and Precision Engineering

基　　金：partly supported by the National Natural Science Foundation of China(No.51075094)~~

摘　　要：为了对超声振动铣磨加工先进陶瓷的表面粗糙度进行预测,建立了加工表面形貌的仿真模型.通过实验测得砂轮表面形貌和磨粒突出高度信息,并对这些信息进行Kolmogorov-Smirnov正态验证,发现砂轮表面形貌不服从高斯分布.对非高斯分布的数据进行Johnson变换,建立砂轮形貌的数值模型.结合砂轮表面形貌和磨粒与工件的相对运动分析,提出了一种表面轮廓搜索方法,进而生成了加工表面的三维形貌.最后,在DMG ULTRASONIC 70-5 linear机床上进行切削实验,对仿真结果进行了验证,结果表明仿真与实验结果具有较好的一致性,并对仿真误差产生的原因进行了分析.To predict the machined surface roughness in ultrasonic vibration mill-grinding of advanced ceramics, a numerical model was established to simulate the ground surface topography. The topography of the diamond grinding wheel and information of grain protrusion heights were obtained by experiments. Kolmogorov-Smirnov normality tests were then carried out and the results reveal that grain protrusion heights do not obey Gaussian distribution. Johnson transformation was selected to process non- Gaussian data and a simulated topography of grinding wheel was established. Combining the surface features of the grinding wheel with the analysis of relative motion between grains and workpiece, a new search method was proposed to determine the ground surface profile, thereby three-dimensional topography of ground surface was generated. Finally, experiments were carried out on a DMG ULTRASONIC 70-5 linear machine to verify the simulation results. The simulation results correspond well with the experimental data. Furthermore, the reasons for simulation error were analyzed.

关 键 词：仿真 超声振动 表面粗糙度 铣磨 陶瓷 

分 类 号：TG663[金属学及工艺—金属切削加工及机床]