用瞬心法和解析法分析四杆机构急回特性  

Analysis of the Quick Return Characteristic in Four-bar Linkage Based on Instantaneous Center Method and Analytic Method

作　　者：李宏亮[1] 郝静如[1] 

机构地区：[1]北京信息科技大学机电工程学院,北京100192

出　　处：《机械工程师》2012年第2期21-23,共3页Mechanical Engineer

摘　　要：通过瞬心法对平面四杆机构进行速度分析,找到速度转折点,确定出工作行程和空回行程,研究出平面四杆机构的急回特性系数比K0用解析法精确求出急回特性系数比K,并与瞬心法做了比较,结果显示,二者的计算结果只有较小的误差。Through analyzing the velocity by the method of instantaneous center,the velocity changing point is obviously fund,the working route and the returning route are determined and the quick-return coefficient ratio K of planar four bar mechanism is obtained.Besides the analytical method to get the ＇K＇ is finished and compared with the method of instantaneous center.Only a little difference is happened between the two results.

关 键 词：四杆机构 瞬心法 解析法 急回特性系数比 

分 类 号：TH111[机械工程—机械设计及理论]