七渐开线直齿圆柱齿轮传动的参数和尺寸 传动参数:m,z,a,h,c,a 传动尺寸:1.节圆半径r 2.啮合角a 3.中心距a'=r1+n4.传动比i12=n1/n2=a1/O2 5.节圆周节P′=,db b z cos a cos ac p·cosc=pb=p.c0sc =p·cosa cos a 6.侧陳A=e1-S2=e2-1 7.顶陳c'=a-ha1-r2=a-h2-rn七.渐开线直齿圆柱齿轮传动的参数和尺寸 传动参数: , ,, , , * * m z ha c 传动尺寸: 1. 节圆半径 i r 2. 啮合角 3. 中心距 1 2 a = r + r 4. 传动比 12 = n1 n2 = 1 2 i 5. 节圆周节 = = = cos cos db pb z z d p p cos = pb = p cos = cos cos p p 6. 侧隙 1 2 2 1 = e − s = e − s 7. 顶隙 a1 f 2 a2 f 1 c = a − r − r = a − r − r