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三四五厂在试制某发动机的起动电动机时,在驱动轴的端头部份遇到一个很小的不通孔内花键,成为试制工作的难关。其设计参数是径节=48/96,相当于模数=0.52916/0.26458、压力角=30°、齿数=11、顶圆直径=φ5.3~(+0.007)、根圆直径=φ6.7_(0.07)~(0.25)、渐开线终点直径=φ6.4252、齿槽宽度最大实际尺寸0.891毫米、齿槽宽度最小有效尺寸0.831毫米、齿槽有效深度为9.1毫米。加工这种不通孔内花键,需用一种国内从
Three four five factory in the trial production of an engine starting motor, the drive shaft in the end part of the encounter a small non-through-hole spline, a trial of difficulties. The design parameters are radius = 48/96, equivalent to modulus = 0.52916 / 0.26458, pressure angle = 30 °, number of teeth = 11, diameter of top circle = φ5.3 ~ (+0.007), diameter of root circle = φ6.7_ (0.07) ~ (0.25), the involute end diameter = φ6.4252, the maximum actual width of the tooth groove is 0.891 mm, the minimum effective width of the tooth groove is 0.831 mm, and the effective depth of the tooth groove is 9.1 mm. This non-through-hole spline processing, the need to use a domestic from