Study on the polishing based on the PVT interpolation algorithm

Polishing is a precision machining method to improve the material surface quality. This paper presents a new polishing method based on Position-velocity-time (PVT) interpolation in computer-controlled optical surface (CCOS). In order to verify the machining performance of the proposed technology, a series of analytical and experimental investigations were conducted. From the experimental results, it was confirmed that PVT interpolation processing surface quality is very good, and the surface roughness of optical glass workpiece can reach 4 nm. The experiment data of the actual machining position, velocity, and acceleration match well with the simulation results.