★定轴轮系传动比的计算 1.平面定轴轮系传动比的计算 传动比大小的计算 23 2 2 5 45 57 4 n,n,nan, 243445 1212′343′4445 12n3141212324 12, 445 15 1223134445 21424344 1423定轴轮系传动比的计算 1.平面定轴轮系传动比的计算 传动比大小的计算 1 2 2 1 12 z z n n i = = 2 3 2 3 3 2 n z i n z   = =  3 4 3 4 4 3 n z i n z   = =  4 5 5 4 45 z z n n i = = 1 2 3 4 2 3 4 5 12 2 3 3 4 45 2 3 4 5 1 2 3 4 n n n n z z z z i i i i n n n n z z z z     = =   1 2 3 4 5 2 3 5 15 12 2 3 3 4 45 5 1 2 3 4 1 2 3 n z z z z z z z i i i i i n z z z z z z z = = = =       n2 = n2  n3 = n3 