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A Novel Method for Kinematic Optimization of Camshaft Non-Circular Grinding

A novel non-circular grinding technique which utilizes two grinding wheels of different diameters is proposed for the locomotive camshaft with concave curves. The larger grinding wheel is used for rough machining to increase grinding efficiency and the smaller is used for finish machining to form the cam profile accurately. Based on the analysis of motion law of grinding carriage and headstock, the speed and acceleration curves are reconstructed by three different methods to optimize kinematic characteristics of cam non-circular grinding. Simulation and experimental results show that the profile accuracy and surface quality can be improved effectively through kinematic optimization by reconstructing the acceleration curves with cosine curves.