小型非球面数控抛光技术的研究

用计算机控制抛光的方法对小型非球面数控抛光技术进行了研究。对计算机控制小磨头抛光的材料去除作用进行了计算机模拟;依据计算机模拟结果,调整驻留时间函数,进行抛光补偿;最后,在自行研制的三轴联动非球面数控抛光原理样机上高效地完成了70 mm左右非球面的抛光,各项指标达到了中等精度要求,表面粗糙度为2.687 nm,面形精度为0.45 μm,且重复精度良好。结果表明,该技术有效提高了小型非球面光学零件的批量生产效率。

Computer-controlled polishing technology for small aspheric lens

Based on the computer controlling method,the polishing technology and pertinent researches for small aspheric lens were studied. The material removing function of computer-controlled polishing tool was simulated with computer at length. Then, according to the simulating results, polishing correction was accomplished after adjusting the function of tool resident time. Finally, a 70 mm aspheric lens was polished on our self-made and computer-controlled polishing machine with three universal driving shafts.Experimental results show that the polishing technology has higher efficiency and precision. The precision of profile measurement is 0.45 μm and the precision of surface roughness is 2.687 nm. Furthermore, a high repeatable accuracy is obtained also. The results also indicate that the polishing technology can improve remarkably the batch-quantity manufacturing efficiency of small aspheric lens.