An optimization mathematical model of cutting elements is founded by technical requirement and forced condition when turning. The optimum of cutting elements is got by using penalty function method.
根据车削时的加工要求和受力情况，建立切削用量优化设计的数学模型，采用惩罚函数法进行优化，得到了切削用量的优化结果。
This method has better effect and function in interpreting and demonstrating the concept of envelope cutting gear than observing cutting gear or making experiment with instrument.
其解释、演示齿轮范成的概念比观察实际切削加工和用仪器做实验具有更好的效果，更多的功能。
Analyse the function of the import & outport length of idle stroke in processing of screw cutting and the method to confirm the length.
分析了螺纹车削加工中，空刀导入量、空刀导出量的作用及其确定方法。
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