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通过对推杆盘形凸轮机构进行受力分析,得出压力角越小其传力特性越好,当压力角为0时,导轨对推杆的约束反力为0,效率为1,传力特性最好,零度压力角推杆盘形凸轮机构将会得到广泛的应用。推导出凸轮转动过程中使压力角始终为0的凸轮轮廓曲线。根据三心定理求出压力角计算公式,令压力角为0得推杆速度方程,求导得推杆位移方程,根据位移方程用反转法设计凸轮曲线,验证了该凸轮曲线为渐开线,将零度压力角推杆渐开线廓形凸轮机构应用到导料机和制动力矩测量装置中,使用效果良好,尤其渐开线制动力矩装置测量方便精确,已在矿井提升机中得到了广泛的推广应用。
By analyzing the force of disc cam mechanism, it is found that the smaller the pressure angle is, the better the transmission force is. When the pressure angle is 0, the reaction force of the guide rail to the pusher bar is 0, the efficiency is 1, Features the best, zero pressure angle push rod disc cam mechanism will be widely used. The curve of the cam profile that causes the pressure angle to be always 0 during the rotation of the cam is derived. According to the three-center theorem, the pressure angle calculation formula is obtained, and the pressure angle is 0, and the displacement equation of the push rod is obtained. The cam curve is designed by the inversion method according to the displacement equation, and the cam curve is verified as an involute curve , The zero pressure angle rod involute profile cam mechanism applied to the guide and braking torque measuring device, the use of good results, especially the involute braking torque measuring device convenient and accurate, has been mine hoist A wide range of promotion and application.