On the basis of improving cutting-toolangle and operating method, the machining efficiency is raised, the difficulties in processing inside whorl are also solved.
通过改进刀具角度及操作方法，提高了加工效率，解决了内螺纹加工的难点。
2
Higher the rake Angle, better is the cutting and less are the cutting forces, increasing the rake Angle reduces the metal backup available at the tool rake face.
前角越大，则切削越好且切削力越小，增加前角可以减少刀具前倾面上产生的金属阻塞。
3
The influencing orderliness of the cutting depth and the rake Angle of the tool on cutting qualities are found and the mathematical models are built.