一、现有的角传动比计算公式图1为球面蜗杆滚轮式转向器角传动比的计算简图。o—滚轮摆动中心(垂臂轴中心);o_c—切削铣刀盘旋转中心;α—垂臂轴转角;β—切削铣刀盘转角;R_o—滚轮摆动半径;R—滚轮啮合半径;R_c—铣刀盘节圆半径; First, the existing formula for calculating the angular drive Figure 1 is a spherical worm roller steering gear ratio calculation diagram. o-roller center of swing (arm axis center); o_c-cutter milling cutter center of rotation; α -pin arm axis of rotation; β-cutter milling cutter angle; R_o- wheel swing radius; R- wheel engagement radius; R_c- Mill cutter pitch circle radius;