自动机凸轮曲线动力学性能改进

Dynamic Performance Improved for Cam Curve of Automatic Machine

对原自动机凸轮曲线的过渡段采用正弦型曲线进行动力学特性优化。在已知约束条件和符合自动机内弹道安全要求的前提下,建立优化凸轮曲线的轮廓方程。利用多刚体动力学理论,对比优化前后自动机虚拟样机曲线槽的动力学性能。仿真结果表明改进后自动机驱动力矩和滚轮与上下曲线槽的接触力和自动机驱动功耗显著降低,发射率明显提高。

The sinusoidal cam curve design method was used to optimize the dynamic performance of the transition section for the original cam curve.The contour equation of the optimized cam curve was established under the known constraints and compliance with the internal ballistic safety requirements of the automatic machine.Based on the theory of multi-rigid body dynamics,the dynamic performance of the automatic machine curve groove before and after optimization was compared on the basis of the virtual prototype model.The simulation results show that the driving torque of the automatic machine is significantly reduced;the contact force between the roller and the upper and lower curve grooves are significantly reduced;the automatic machine drive power consumption is significantly reduced;and the emissivity is significantly improved.