Abstract:The right end of the part is a conical thread internal and external mating connection, the left end is a taper surface, ARC surface mating connection.In order to achieve the taper thread with a reasonable fit, taper surface, ARC surface with more than 70% of the requirements.Reasonable part NC Latheing process design, determine clamping scheme, choose cutting tools and cutting parameters to process qualified parts to ensure the size and quality of parts to meet the design requirements.