在中等职业学校的普车教学中,车削梯形螺纹对于学生是一个难点,也是一个比较重要的课题,能否加工出一个合格的梯形螺纹能够反映一个人车工水平的高低。分层车削法加工梯形螺纹对于中职学生来说是简单易懂,且安全有效的方法。 Turning a trapezoidal thread into a secondary vocational school is a difficult task for students. It is also a more important issue. Whether a qualified trapezoidal thread can be machined can reflect the level of a worker. Stratified turning method of trapezoidal thread for secondary vocational students is easy to understand, and safe and effective way.