计算点:节点 啮合点齿廓综合曲率半径 啮合线 啮合线 双对齿单对齿双对齿 Pr sin a 2 +1P2±P=P2土1 PP21(2P1) L齿数比 11u±1 d sin a u计算点:节点 啮合点齿廓综合曲率半径 sin 2 1 1 d = sin 2 2 2 d = ( / ) 1 1 1 / 1 1 2 1 2 1 1 2 2 1 1 2 = = = u Z Z d d = = = 1 2 1 2 1 2 齿数比 u u u d u 1 sin 1 1 1 2 1 1 = =