一对标准安装的渐开线标准直齿圆柱齿轮外啮合传动,已知: a =100mm , z 1 =20 , z 2 =30 , α =20° , d a1 =88mm 。试计算下列几何尺寸: 1 齿轮的模数 m ; 2 两轮的分度圆直径 d 1 , d 2 ; 3 两轮的齿根圆直径 d f1 , d f2 ; 4 两轮的基圆直径 d b1 , d b2 ; 5 顶隙 C 。
【简答题】Throughout our childhood our parents taught us to say “thank you” and it has become a habit — something we say automatically (自动地), along with “please”. And because of this we have forgotten just how ...