拉刀的种类规格多、精度高、构造复杂,因此拉刀的制造工序多操作难。我厂在这两年中虽然已能制造圆拉刀、多角形拉刀、直齿花键拉刀、键槽拉刀、平面拉刀及各种普通的成形拉刀,但三角形、渐开线花键拉刀、螺旋形拉刀及特殊的复杂的、精度高的拉刀,因为经验不够,设备不齐,操作不 Broach type and more specifications, high precision, complex structure, so the broaching process more difficult to operate. I plant in these two years although it has been able to create circular broach, polygonal broach, spline broach, spline broach, flat broach and a variety of common forming broach, but the triangle, involute flowers Key broach, spiral broach and a special complex, high precision broach, because of lack of experience, equipment is not homogeneous, the operation is not