大型非球面环带精磨方法

A model with sub-aperture lap for lapping

国内大型非球面的加工流程一般是先精磨成最接近球面,然后抛光修磨成非球面。由于这种方法抛光效率低,所以整个流程的加工周期很长。提高加工效率的方法之一是在精磨阶段就将其修磨成非球面,为此提出了一种采用较大磨盘,由自校正模糊补偿控制模型控制环带精磨非球面的方法。试验结果表明,采用该方法可以得到精磨成型非球面,从而提高了大型非球面的整体加工效率。

Manutacture of large aspheric lens, especially lapping ot large aspheric lens, was very difficult. Taking account of lapping ot large aspheric lens, a sub-aperture lapping model with adaptive algorithm was built up. The test resuit demonstrates the validity ot the method.