30度SAE花键计基本参数压力角α径节参数节圆直径D（pitchdiameter）基圆直径Db（basediameter）内花键大径Dri，平齿根(major diameter,flatroot)大径Dri,圆齿根(majordiameter,fillet root)内花键型圆直径DFi,(formdiameter)内花键最小径Dimin(minimum minordiamete)小径Dimax(maximum minordiameter)外花键小径Dre（minordiameter）4524/48计算数值20.108314.2187齿数N节距P公式N/PDcos30°(N+1.35)/P+0.004+ΔDri21.708821.6072(N+1.35)/P+ΔDri21.3783(N+1)/P+2Cf19.0500(N-1)/P19.1598Dimin+TDII17.75（N-2.10）/P-ΔDre-es/tan30°s7max(maximum actualspace width)0.0710svmin+f(m+λ)s6max(maximum actualspace width)0.0693svmin+f(m+λ)s5max(maximum actualspace width)s4max(maximum actualspace width)外花键最大有效齿厚tvmax(maximum effectivetooth thickness)0.0682svmin+f(m+λ)0.0674svmin+f(m+λ)1.6624π/2P-es最小齿厚t4min(minimumactual tooth thickness)1.5523tvmax-f(m+λ)最小齿厚t5min(minimumactual tooth thickness)最小齿厚t6min(minimumactual tooth thickness)1.5320tvmax-f(m+λ)1.5039tvmax-f(m+λ)最小齿厚t7min(minimumactual tooth thickness)1.4619tvmax-f(m+λ)最大外径Domax（maximummajor diamete）21.10(N+1)/P-es/tan30°最小外径Domin（minimummajor diameter）外花键型圆直径DFe（formdiamete）20.996618.7957Domax-TDIIDimin-2Cf-escos30°花键计算1924参数常数π花键间距m(Spline Pitch)花键间距λ(SplinePitch)齿根直径公差ΔDri(changein root diameter fortotal tolerances)Cf小径直径公差TDII（minordiameter tolerance）大径直径公差TDEE（minordiameter tolerance）svmin(minimum effectivespace width)计算数值3.14160.0012330.07N+11公式0.0015280.12N+130.0028(m+λ)/tan30°0.00420.1/P0.0043360/P0.6670.0043360/P0.6670.0655π/2P齿根直径公差ΔDre(changein root diameter fortotal tolerances)0.0028(m+λ)/tan30°es(minimum effectiveclearance)0.0024class d:D0.44/380class e:D0.44/610class f:D0.44/1220class h:0class 4:0.71class 5:1.00class 6:1.40class 7:2.000.15/P0.0015f(multiplying factorfor splinetolerance class )rfe最小圆角半径，平齿根（minimum filletradius）rfe最小圆角半径，圆齿根（minimum filletradius）Fβ最大允许变位（maximumallowable leadvariation）最大轮廓Ffp(maximumallowable positiveprofile variation)最大轮廓Ffm(maximumallowable negativeprofilevariation)2.00000.15880.260.25/P0.0004Lg+3(Lg≥1)2.7Lg+1.4(Lg＜1)Lg=0.90.00032.2+14.7/P-0.0005-(4+17/P)Fp(maximum allowabletotal index variation)0.0016λ/0.6-2Ffp-Fβ内花键最小有效键槽宽svmin（minimum effectivespace width 30 degspline）s7maxs6maxs5maxs4max1.6624π/2P1.80271.76061.73261.7122svmin+f(m+λ)svmin+f(m+λ)svmin+f(m+λ)svmin+f(m+λ)0.00070.0000
