我厂新试制的一种工件,其内孔为螺旋渐开线花键(见图),其参数为m_n=1.75、α= 20°、β=30°、z=10。 由于是螺旋花键,不能在一般拉床上拉削。在样品试制中,曾通过车削加工出渐开线花键。但车削加工精度低,劳 A new trial of our factory a workpiece, the hole for the spiral involute spline (see Figure), the parameters of m_n = 1.75, α = 20 °, β = 30 °, z = 10. Because it is a spiral spline, you can not broach on a general broaching machine. In the prototype trial, the involute spline was machined out of turning. But the turning machining accuracy is low, labor