圆柱蜗轮蜗杆传动计算7508算例1蜗轮端面(蜗杆轴向)模数m1.5mmπ3.141592蜗杆头数Z113传动比I434蜗轮齿数Z2435蜗杆直径系数q136蜗杆分度圆直径d1m*q19.5mm蜗轮分度圆直径d2m*Z264.5mm7中心距a'42mm8蜗轮变位系数x20a/m-(d1+d2)/(2*m)0按公式计算9蜗杆分度圆柱导程角γ4.39870907degree0.076771891radtan(γ)=z1/q=m*z1/d10.07692cos(γ)0.9970510蜗杆节圆柱导程角γ'4.400936442degree0.076771891radtan(γ')=z1/(q+2*x2)0.07692307711蜗杆轴向齿形角阿基米德圆柱蜗杆α20degree0.349065556radtan(α)0.3639699渐开线圆柱蜗杆αarctan(tan(α)/cos(γ))20.05438164degree0.350014693rad12蜗杆(轮)法向齿形角αn阿基米德圆柱蜗杆arctan(tan(α)*cos(γ))19.95584102degree0.34811856rad渐开线圆柱蜗杆20degree0.349065556radtan(α)0.363969913顶隙系数c*0.2514顶隙cm*(c*)0.375mm15齿根高系数ha*116蜗杆齿顶高ha1(ha*)*m1.5mm蜗轮齿顶高ha2(ha*+x2)*m1.5mm17蜗杆齿根高hf1(ha*+c*)*m1.875mm蜗轮齿根高hf2(ha*+c*-x2)*m1.875mm18蜗杆分度圆直径d1m*q19.5mm蜗轮分度圆直径d2m*Z264.5mm19蜗杆节圆直径d1’d1+2*x2*m19.5mm蜗轮节圆直径d2‘d264.5mm20蜗杆齿顶圆直径da1d1+2ha122.5mm蜗轮齿顶圆直径da2d2+2ha267.5mm21蜗杆齿根圆直径df1d1-2*hf115.75mm蜗轮齿根圆直径df2d2-2*hf260.75mm22蜗杆轴向齿距pxπ*m4.712385mm23蜗杆轴向齿厚sx0.5*π*m2.3561925mm24蜗杆法向齿厚snsx*cos(γ)2.349252301mm25实际中心距a(D1+D2+2*X2*M)/242mm26蜗杆分度圆法向弦齿高hn1m1.527蜗杆螺纹部分长度L与z1,x,m有关表14-4-6828蜗轮最大外圆直径da2maxz=1da2+2*m70.5mmz=2、3da2+1.5*mz=4da2+1*m29蜗轮轮缘宽度b(0.67~0.75)*da115.07516.8751630蜗轮咽喉母圆半径rg2a-(da2)/28.25mm31蜗轮齿根圆弧半径rf20.5*da1+0.2*m11.55mm