一类利用摆线曲柄实现精确停歇的机构综合方法  

The Design Method of Accurate-dwell Mechanism with Cycloid Crank

作　　者：周校民 王忠[2] 郭瑞杰[2] 杨启坤[3] 

机构地区：[1]中航工业成都凯天电子股份有限公司,成都610091 [2]西南科技大学,绵阳621010 [3]成都工具研究所有限公司,成都610500

出　　处：《机械科学与技术》2012年第10期1676-1681,共6页Mechanical Science and Technology for Aerospace Engineering

摘　　要：摆线曲柄机构的运动轨迹变化多样,可用于实现机构的停歇运动;但在设计过程中,实际摆线轨迹与理想轨迹存在一定的误差。为了减小摆线曲柄机构的轨迹误差,首先对这类机构的摆线参数方程、基本性质和运动特点进行了系统的分析,得到了摆线曲柄机构的运动规律;然后,根据行星轮和中心轮的啮合方式以及轨迹形状,分别对不同类型的摆线曲柄机构进行轨迹误差分析,并建立了相应的误差表达式;再按照误差极小的原则,使轨迹误差趋近于零,得到了误差最小条件下的机构参数设计要求;最后将其应用于4种典型结构的摆线曲柄精确停歇机构的设计,由此总结出摆线精确停歇机构的一般设计方法。The trajectory of cycloid crank is diverse, which could be applied to dwell mechanism. In the process of design, there are some error between the real cycloid trajectory and the ideal cycloid trajectory. In order to reduce the trajectory error of cycloid crank, a common kind of design method＇for the accurate-dwell mechanism was pro- posed in this paper. The character of cycloid movement equation was analyzed at first to obtain the movement rule of cycloid crank mechanism. Then, the orbital errors of different cycloid cranks were analyzed and these error ex- pressions were set up. For reducing errors, the required design parameters of the mechanism were calculated based on the minimum error principle. Ultimately these parameters could be applied to design four kinds of dwell mecha- nism with cycloid crank.

关 键 词：摆线 精确停歇 误差分析 机构综合 

分 类 号：TH13[机械工程—机械制造及自动化]