Do = MT + 2M
104 = M*50 + 2*M
52M=104
M = 2
D = MT = 2*50 = 100(mm)
Db=D*cosΦ = 100*cos30 =86.6(mm)
6.齒數50,外徑104mm之標準漸開線齒輪,壓力角為30°,則其基圓直徑為(A..-阿摩線上測驗