基于Motion分析的无碳小车凸轮逆向设计方法  

Reverse design method of carbon-free car cam based on Motion analysis

作　　者：刘洋洋 黄文涛 郑耀辉 安耀慧 LIU Yangyang;HUANG Wentao;ZHENG Yaohui;AN Yaohui(College of Electrical Mechanical Engineering,Shenyang Aerospace University,Shenyang,Liaoning 110136;Engineering Training Center,Shenyang Aerospace University,Shenyang,Liaoning 110136;College of Aeronautics and Astronautics,Shenyang Aerospace University,Shenyang,Liaoning 110136)

机构地区：[1]沈阳航空航天大学工程训练中心,辽宁沈阳110136 [2]沈阳航空航天大学机电工程学院,辽宁沈阳110136 [3]沈阳航空航天大学航空宇航学院,辽宁沈阳110136

出　　处：《机械设计》2023年第7期33-38,共6页Journal of Machine Design

基　　金：辽宁省教育厅系列项目基础研究项目(JYT2020073)。

摘　　要：全国大学生工程训练综合能力竞赛中,无碳小车凸轮的设计是使小车走出理想轨迹的关键。文中根据分析出的理想轨迹,设计了一套基于SolidWorks Motion软件分析的凸轮逆向设计方法。考虑到小车运动轨迹不能出现曲率突变,首先,基于样条曲线设计了理想轨迹,建模并装配小车逆向分析模型,采用Motion逆向分析出凸轮的理论廓线和实际廓线,对完成的凸轮进行Motion仿真检验。结果表明:该设计方法能够设计出符合精度要求的凸轮。这种凸轮逆向设计方法不仅可以应对基础的环S形轨迹,还可以适用更高难度的混合轨迹及变化的赛题。In the National Undergraduate Engineering Training Integration Ability Competition,the design of carbon-free car cam is the key to make the car run an ideal path line.According to the ideal trajectory analyzed,this article presents a carbon-free car cam reverse design method based on SolidWorks Motion analysis.Since the curvature mutation can not appear in the trajectory of the car,firstly,the ideal trajectory is designed based on spline,and then the reverse analysis model of the car was established and assembled.The theoretical profile and actual profile of CAM are analyzed based on Motion analysis.Through the Motion simulation of the cam,the reverse design method is successful to design the cam meeting the requirements of precision.This reverse CAM design method can not only deal with the basic loop S trajectory,but also can be adopted to the mixed trajectory with higher difficulty and future competition.

关 键 词：Motion分析 无碳小车 凸轮廓线 运动仿真 逆向 

分 类 号：TH122[机械工程—机械设计及理论]