摘要
目的研究包装机械推料机构中凸轮轮廓曲线的优化设计,提高机构运行平稳性,优化推料机构的工作性能。方法以包装机械直线型凸轮推料机构为研究对象,通过构建推料机构执行件简谐、等速组合型速度运动规律修正曲线,采用动力学分析仿真软件ADAMS建立机构虚拟样机模型并进行逆动力学求解,对凸轮进行优化设计和仿真分析。结果推料机构执行件速度修正前存在速度突变,凸轮轮廓存在尖点和凹点,凸轮和从动滚子之间的接触力有冲击和振动。优化后的执行件速度平缓过渡,凸轮轮廓无尖点和凹点,凸轮和从动杆滚子之间的接触力在速度突变位置过渡平稳,没有冲击和波动。结论由简谐、等速组合型修正速度运动规律得到的优化凸轮轮廓曲线表面平滑,执行件比匀速型运动规律运动平稳。
The work aims to optimize the design of cam contour curves in the pushing mechanism of packaging machinery,improve the operation stability of the mechanism and optimize the working performance of the pushing mechanism.With the linear cam pushing mechanism of packaging machinery as the object,a modified curve of the harmonic and uniform speed combined velocity motion of the pushing mechanism was constructed.The dynamic analysis and simulation software ADAMS was used to establish a virtual prototype of the mechanism for inverse dynamics solution,enabling the optimization design and simulation analysis of the cam mechanism.Before velocity modification,there were sudden velocity changes and also sharp or concave points on the cam contour.Contact forces between the cam and the driven roller exhibited impacts and vibrations.After optimization,the actuator's velocity changed smoothly;there were no sharp or concave points on the contour surface;and the contact force between the cam and the follower changed smoothly without impacts or fluctuations.In conclusion,the optimized cam contour curve obtained using the harmonic and uniform speed combined modified velocity motion law exhibits a smoother surface.The actuator moves more stably compared with uniform motion laws.
作者
刘静
LIU Jing(University of Shanghai for Science and Technology,Shanghai 200093,China)
出处
《包装工程》
北大核心
2025年第15期246-251,共6页
Packaging Engineering
基金
上海市高校选拔培养优秀青年教师科研专项(354103)。
关键词
包装机械
凸轮机构
虚拟样机
优化设计
packaging machinery
cam mechanism
virtual prototyping
optimization design
