在平面行星式研磨加工过程中, 研磨盘磨损的均匀性与光学镜片的研磨质量有密切关系。通过对光学镜片在平面行星式研磨加工过程中的运动规律进行分析, 建立了差动轮系条件下工件运动的轨迹和速度计算模型, 开发了Matlab仿真程序。结合生产实际, 对行星轮系条件下工件运动的轨迹和速度进行了仿真, 确定了研磨机速比对研磨盘磨损均匀性的影响规律: 当速比I1<-1.5时, 镜片的运动轨迹在较短时间内遍布研磨盘各处, 研磨盘得到均匀磨损, 加工质量和加工效率较高。基于仿真结果, 通过优化工艺参数, 获得了厚度一致性小于0.002 mm, 平行度小于0.002 mm的高质量光学镜片。

In the flat planetary lapping process, the lapping quality of optical lens has close relation with the uniformity of abrasion of lapping plate. In this paper, the motion law of optical lens in the flat planetary lapping process was analyzed. The model of lens motion trajectory and lens motion velocity in the conditions of differential gear trains was set up. Besides, the simulation program was developed with Matlab software. In addition, combined with the actual production process, the lens motion trajectory and lens motion velocity were simulated in the conditions of planetary gear train. The influence law of lapping machine speed ratio on the uniformity of abrasion of lapping plate was confirmed. When the speed radio I1<-1.5, the lapping plate is covered by the lens motion trajectory in short time and the abrasion of lapping plate is uniform. Therefore, the lapping process has better quality and higher efficiency than before. Finally, the high quality optical lens, which consistency of lens thickness was better than 0.002 mm and parallelism was better than 0.002 mm, was obtained by optimized process parameters based on the simulation result.