Study on Fly Cutting of Micro None Axis-Symmetric Aspherical Surface

Abstract

None axis–symmetric aspherical surfaces are required for recent advanced digital devices, such as DVD/CD lenses, fθ lenses and rear projector mirrors in. This paper deals with ultra precision fly cutting of none axis–symmetric aspherical surfaces by single crystal diamond tool. The tool trace in fly cutting of none axis–symmetric aspherical surfaces was introduced and the fly cutting system of 3–axes (X,Z,C) control was developed. In this cutting experiment, electronless Ni was fly–cut and the surface roughness in different radial position was measured. From the experiments, the feed rate control method was useful.