关键词: 轨迹和姿态要求, 齿轮凸轮组合机构, 微型遗传算法, 超高速包装机

Abstract:

A new type of mechanism was designed and optimized for the requirements of complex production process in automated machinery.Firstly,it was designed to meet the specific trajectory and gesture.It included a cam mechanism and a gear mechanism,where the gear mechanism  was used to implement linear reciprocating motion while the cam mechanism to achieve the specific gesture and some different trajectories combined with the linear reciprocating motion of the epicycloids gear mechanism.Secondly,a method of optimizing the convex contour was put forward to improve the new mechanism's kinematic performance based on the micro-genetic algorithm.As an example,the new mechanism was applied in the conveyor system of an ultra-high-speed aluminum foil tobacco packaging machine in order to achieve the folding and pushing action, and then the convex contour was optimized.The results show that the new type of gear-cam mechanism based on micro-genetic algorithm can achieve the folding aluminum foil packets and push action,also have good kinematic characteristics which can reduce the damage to the tobacco packets and improve the packaging quality.

Key words: trajectory and gesture requirement, cam-gear combined mechanism, micro-genetic algorithm, ultra-high-speed packaging machine