多项式拟合法在旋盖机凸轮曲线设计中的研究与应用  

The research and application of polynomial fitting in cam curve design of cap screwing machine

作　　者：吴佳 何雪明 何楷 张荣[2] WU Jia;HE Xue-ming;HE Kai;ZHANG Rong(Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology,Wuxi,Jiangsu 214122,China;School of Science,Jiangnan University,Wuxi,Jiangsu 214122,China)

机构地区：[1]江苏省食品先进制造装备技术重点实验室,江苏无锡214122 [2]江南大学理学院,江苏无锡214122

出　　处：《食品与机械》2018年第6期75-80,151,共7页Food and Machinery

基　　金：国家自然科学基金项目(编号:51275210)

摘　　要：针对局部控制条件过多时传统多项式插值法所设计的凸轮曲线幂次过高,不利于旋盖机凸轮加工的问题,分别采用整体5次、6次及7次多项式拟合法来设计旋盖机凸轮曲线,在满足局部控制条件的同时控制多项式幂次。当凸轮曲线各项特性参数均得到优化后,构建旋盖机凸轮机构三维模型,并对其进行动力学仿真分析,综合对比机构运动学与动力学性能,确定最优的凸轮曲线。In view of the excessive local control conditions, the power of the cam curve designed by traditional polynomial interpolation method got too high to control, which was not conducive to the pro cessing of capping machine cam. The global 5, 6 and 7 polynomial fitting methods were separately used to design the cam curve, so that it could control the power of the polynomial while satisfying the local control conditions. When the parameters of the cam curve got opti mized, constructed the cam mechanism into a three dimensional model and carried out the dynamic simulation analysis. After compa- ring to the kinematic and dynamic properties of mechanism, finally the optimal curve was determined.

关 键 词：旋盖机 凸轮曲线 多项式拟合 动力学仿真 

分 类 号：TH112.2[机械工程—机械设计及理论]