On Processing Methods and Skills of Trapezoidal Thread by Means of CNC Lathe

摘要

Big size of both pitch and thread form of trapezoidal thread and high accuracy tend to cause serious tool tip wear, and even breaking edge and tipping due to deep penetration, fast feeding and large hogging. High-efficient trapezoidal thread turning by the CNC remains a mechanical problem for the time being. This thesis analyzes trapezoidal thread CNC processing in detail and concludes that stratified cutting by means of left and right cutting method is advisable. Turning tool material and parameters are considered with conclusion that application of hard alloy turning tools is suitable for trapezoidal thread CNC processing. Factors to be considered in grinding trapezoidal thread CNC turning tool are also given. Finally ingenious application of sub-program leads to trapezoidal thread stratified processing on the basis of processing technology analysis of trapezoidal thread CNC lathe.