关键词: 环曲面眼镜片, 慢刀伺服, 数学模型, 加工路径

Abstract:

To solve the difficulties of processing non-rotationally symmetric aspherical spectacle lens,a method of
machining toric spectacle lens with slow tool servo was discussed.A mathematical model of toric was established,and its cutting path was generated.The plan of cutting contact point discretization and cutting tool compensation,and the space extension problem of prism surface were analyzed.At last,an example shows that the proposed method based on slow tool servo is feasible and toric spectacle lens with diopter accuracy within 0.05D can be achieved.

Key words: toric spectacle len, slow tool servo, mathematical model, cutting path