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介绍了光学自由曲面的数控加工方法，由数控磨削、数控研磨、数控抛光、形面测量、修正研磨等工艺过程组成。讨论了数控研磨工艺。数控研磨可以均匀地去除磨削形成的“峰—谷”层和微裂纹层，降低自由曲面的表面粗糙度值，提高表面质量。
The numerical control processing method of optical freeform surface is introduced, which is composed of CNC grinding, CNC grinding, NC polishing, surface measurement, grinding correction and so on. Discussed CNC grinding process. The NC grinding can remove the “peak-valley” layer and the micro-crack layer formed by grinding uniformly, reduce the surface roughness of the free-form surface and improve the surface quality.