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模数m12齿数Z114齿形角α20径向变位系数x10.4α弧度值0.349065844齿顶高系数ha*1分度圆直径d1168顶隙系数C*0.25未变位中心距a=m*(Z1+Z2)/2558要求中心距a'558中心距变动系数y=(a'-a)/m0啮合角cosα'0.939692623α'20α'弧度值0.349065844总变位系数XΣ=(Z1+Z2)*(invα'-invα)/(2*tanα)-7.09198E-15π3.1415926X1X2齿顶高变动系数Δy=(x1+x2)-y0ha1=(ha*+x1-Δy)*m16.8ha2=(ha*+x2-Δy)*m7.2hf1=(ha*+C*-x1)*m10.2hf2=(ha*+C*-x2)*m19.8h1=(ha*1+C*-x1)*m27h2=(ha*2+C*-x2)*m27da1=d1+2*ha1201.6da2=d2+2*ha2962.4db1=d1*cosα157.8683606db2=d2*cosα890.8286064df1=d1-2hf1147.6df2=d2-2hf2908.4αa1＝Arccos(db1/da1)0.671197963αa2＝Arccos(db2/da2)0.388093034S1变为系数齿顶高齿根高分度圆弦齿厚齿轮1h2=ha2+mz2/2*［1-cos(π/2z2+2*x2*tanα/z2)]内齿轮Δh2=da2/2*(1-cosδ2)δ2=π/2z-invα+invαa2齿高齿顶圆直径基圆直径齿根圆直径h2=ha2+mz/2*［1-cos(π/2z2+2*x2*tanα/z)]分度圆弦齿厚S1=m*zsin(π/2z+2x1tanα/z)齿顶圆压力角变位齿轮分度圆弦齿厚分度圆弦齿高外啮合h1=ha1+mz1/2*［1-cos(π/2z1+2*x1*tanα/z1)]S2分度圆弦齿厚S2=m*zsin(π/2z+2x2tanα/z)模数m12齿数Z279齿形角α20径向变位系数x2-0.4α弧度值0.349065844齿顶高系数ha*1分度圆直径d2948顶隙系数C*0.25invα0.014904383invα'0.0149043830.4-0.438.4568111322.2360932917.54182167.2621794370.159072870.0257135629.9473686122.2778571通过手册查寻具体数值分度圆弦齿厚齿轮2查手册invα=tanα-α注α为弧度值h2=ha2+mz2/2*［1-cos(π/2z2+2*x2*tanα/z2)]Δh2=da2/2*(1-cosδ2)δ2=π/2z-invα+invαa2h2=ha2+mz/2*［1-cos(π/2z2+2*x2*tanα/z)]S1=m*zsin(π/2z+2x1tanα/z)角度值变位齿轮分度圆弦齿厚h1=ha1+mz1/2*［1-cos(π/2z1+2*x1*tanα/z1)]15.35476997S2=m*zsin(π/2z+2x2tanα/z)