基本参数45径节24/48参数计算数值公式20.1083N/P14.2187Dcos30°21.708821.607221.378319.0500(N-1)/P19.159817.75540.071030度SAE花键计算压力角α齿数N节距P节圆直径D（pitchdiameter）基圆直径Db（basediameter）内花键大径Dri，平齿根(majordiameter,flatroot)(N+1.35)/P+0.004+ΔDri大径Dri,圆齿根(majordiameter,filletroot)(N+1.35)/P+ΔDri内花键型圆直径DFi,(formdiameter)(N+1)/P+2Cf内花键最小径Dimin(minimumminordiamete)小径Dimax(maximumminordiameter)Dimin+TDII外花键小径Dre（minordiameter）（N-2.10）/P-ΔDre-es/tan30°s7max(maximumactualspacewidth)svmin+f(m+λ)0.06930.06820.06741.6624π/2P-es1.55231.53201.50391.4619s6max(maximumactualspacewidth)svmin+f(m+λ)s5max(maximumactualspacewidth)svmin+f(m+λ)s4max(maximumactualspacewidth)svmin+f(m+λ)外花键最大有效齿厚tvmax(maximumeffectivetooththickness)最小齿厚t4min(minimumactualtooththickness)tvmax-f(m+λ)最小齿厚t5min(minimumactualtooththickness)tvmax-f(m+λ)最小齿厚t6min(minimumactualtooththickness)tvmax-f(m+λ)最小齿厚t7min(minimumactualtooththickness)tvmax-f(m+λ)21.1064(N+1)/P-es/tan30°20.996618.7957最大外径Domax（maximummajordiamete）最小外径Domin（minimummajordiameter）Domax-TDII外花键型圆直径DFe（formdiamete）Dimin-2Cf-escos30°1924参数计算数值公式3.14160.0012330.07N+110.0015280.12N+130.0028(m+λ)/tan30°0.00420.1/P0.00430.00430.0655π/2P0.0028(m+λ)/tan30°度SAE花键计算常数π花键间距m(SplinePitch)花键间距λ(SplinePitch)齿根直径公差ΔDri(changeinrootdiameterfortotaltolerances)Cf小径直径公差TDII（minordiametertolerance）360/P0.667大径直径公差TDEE（minordiametertolerance）360/P0.667svmin(minimumeffectivespacewidth)齿根直径公差ΔDre(changeinrootdiameterfortotaltolerances)0.00240.00152.00000.15880.15/P0.26460.25/P0.0004Lg=0.90.00032.2+14.7/P-0.0005-(4+17/P)0.0016es(minimumeffectiveclearance)classd:D0.44/380classe:D0.44/610classf:D0.44/1220classh:0f(multiplyingfactorforsplinetoleranceclass)class4:0.71class5:1.00class6:1.40class7:2.00rfe最小圆角半径，平齿根（minimumfilletradius）rfe最小圆角半径，圆齿根（minimumfilletradius）Fβ最大允许变位（maximumallowableleadvariation）Lg+3(Lg≥1)2.7Lg+1.4(Lg＜1)最大轮廓Ffp(maximumallowablepositiveprofilevariation)最大轮廓Ffm(maximumallowablenegativeprofilevariation)Fp(maximumallowabletotalindexvariation)λ/0.6-2Ffp-Fβ1.6624π/2P1.80271.76061.73261.7122内花键最小有效键槽宽svmin（minimumeffectivespacewidth30degspline）s7maxsvmin+f(m+λ)s6maxsvmin+f(m+λ)s5maxsvmin+f(m+λ)s4maxsvmin+f(m+λ)0.00070.0000
