强激光与粒子束, 2013, 25 (1): 17, 网络出版: 2013-01-07
矩形非球面圆弧半径误差分离及补偿技术
Arc error separation and compensation technology of rectangular aspheric surface
矩形轴对称非球面 砂轮圆弧半径 误差分离 补偿加工 rectangular axisymmetric aspheric surface wheel-arc radius error separation compensation grinding
摘要
研究了砂轮圆弧半径误差对大口径矩形轴对称非球面加工的影响。采用直线光栅式平行磨削的加工方式,建立了砂轮圆弧半径的误差分离的数学模型,分析影响面形精度的因素,根据加工及测量方式将砂轮圆弧半径误差分离出来,利用分离的砂轮圆弧半径误差更新砂轮圆弧半径,同时采用分离后的误差数据进行补偿加工。实验结果表明:对比不分离的补偿加工结果,粗磨和精磨条件下的分离误差补偿加工后的面形误差分别减小了14%和35%,该误差模型能够有效地分离出砂轮圆弧半径误差,分离误差效果明显,提高了加工的精度。
Abstract
To study the effect of the wheel-arc error on large-scale rectangular axisymmetric aspheric machining, the grating parallel grinding method is adopted and the mathematical model of wheel-arc error separation is built. The factors that affect the surface accuracy are analyzed and it is found that the wheel-arc error is the most sensitive in the factors. According to the grinding and measurement method, the wheel-arc error is separated. Using the new wheel-arc radius modified by separated wheel-arc error and the new compensation data subtracted from wheel-arc error, the separating error compensation grinding is carried out and proves effective. The experimental results show that the aspheric surface error decreases by 14% and 35% after separating error compensation grinding in rough and fine grinding conditions. The error model can separate the wheel-arc error effectively and the accuracy of the aspheric surface is improved.
林晓辉, 王振忠, 郭隐彪, 王健, 杨峰. 矩形非球面圆弧半径误差分离及补偿技术[J]. 强激光与粒子束, 2013, 25(1): 17. Lin Xiaohui, Wang Zhenzhong, Guo Yinbiao, Wang Jian, Yang Feng. Arc error separation and compensation technology of rectangular aspheric surface[J]. High Power Laser and Particle Beams, 2013, 25(1): 17.