The removal stability has an important effect on the surface accuracy during fine polishing of freeform optical surfaces and the polishing fluids must be renewed to safeguard the stability.

• 在光学自由曲面的成形抛光加工当中,加工去除的稳定性对工件加工质量具有重要的影响,而抛光液的更新是保证去除稳定的关键。