高速打纬共轭凸轮理论廓线反求实现  

REVERSE REALIZATION OF PITCH CURVE ON CONJUGATE CAM WITH HIGH SPEED BEATING-UP

作　　者：邱海飞[1] QIU HaiFei(College of Mechanical Engineering,Xijing University,Xi'an 710123,China)

机构地区：[1]西京学院机械工程学院,西安710123

出　　处：《机械强度》2021年第4期1002-1006,共5页Journal of Mechanical Strength

基　　金：陕西省教育厅科研计划项目(15JK2177);西京学院横向课题(2019610002001915)资助。

摘　　要：为适应共轭凸轮打纬工艺要求,采用一种修正梯形加速规律分段构建筘座运动方程。利用Matlab开发共轭凸轮反求设计程序,在重构筘座打纬运动规律基础之上,实现了主、副凸轮理论廓线的精确反求,并结合摆臂夹角Φ、中心距L分析了理论廓线形态变化。反求设计结果显示,理论廓线各点压力角α符合机构学传力特性要求。通过逐点计算理论廓线向径r_(0)和曲率半径ρ_(0),确定了合理的基圆半径和滚子半径。为打纬共轭凸轮的结构反求和设计创新提供了技术思路。In order to meet the requirements of beating up technology on conjugate cam,a modified trapezoid acceleration law is used to construct motion equation of reed by segment.The reverse design program of conjugate cam is developed by MATLAB software,and precise reverse design of pitch curve on main and auxiliary cam are realized which on the basis of reconstructing law of beating-up motion.Besides,shape change of the pitch curve is analyzed by combining swing arm angleΦand center distance L.The results of reverse design show that pressure angleαat each point on the curve can meet requirements of mechanical transmission characteristics.The reasonable values of basic circle radius and roller are determined through calculating radial direction r_(0) and radius of curvatureρ_(0) of the curve point by point.The results provides a technical idea for reverse and design innovation of the conjugate cam on beating-up mechanism.

关 键 词：共轭凸轮 反求设计 打纬 理论廓线 压力角 Matlab 

分 类 号：TH122[机械工程—机械设计及理论] TS103.1[轻工技术与工程—纺织工程]