问答题
正常齿标准直齿圆柱齿轮外啮合传动。已知
【正确答案】da1=m(z1+2[*])=100mm，m=da1/(z1+2[*])=5mm
z2=i12z1=36
a=[*]m(z1+z2)=135mm，a'=a+0.8=135.8mm
α'1=α'2=arccos[*]≈20.9°
a'=r'1+r'2=(1+i12)r'1，r'1=a'/(1+i12)=45.267mm
p'1=p'2=2πr'1/z1=15.8mm，c=c*m=1.25mm
z2=i12z1=36
a=[*]m(z1+z2)=135mm，a'=a+0.8=135.8mm
α'1=α'2=arccos[*]≈20.9°
a'=r'1+r'2=(1+i12)r'1，r'1=a'/(1+i12)=45.267mm
p'1=p'2=2πr'1/z1=15.8mm，c=c*m=1.25mm
【答案解析】