【摘要】 本文将平面机构运动可靠性设计分为机构动作可靠性和运动精度可靠性设计。并重点阐述了平面机构运动精度可靠性设计原理 ,即将其中的杆件长度、间隙看作矢量 ,将机构中的原始误差和运动副的磨损量看作变量 ,推导出输出运动误差计算公式 ,建立了运动精度可靠度计算公式 ,找出了可靠度随磨损量增大而下降的关系。由此可反推出机构的使用寿命更多还原

【Abstract】 Motion reliability design of mechanisms is divided into two branches, viz. the movement reliability design, and the reliability design of displacement accuracy. In this paper, design principles concerning the reliability of displacement accuracy are expounded in more detail. Length of component and clearance in mechanisms are taken as vectors, and the primary error and wear of kinematic pairs in mechanisms are taken as variables. A formula of error of the resultant movement is deduced, and a formula on the reliability of displacement accuracy is thereby deduced. With the increase in wear the reliability of displacement accuracy decreases. Relationship between reliability and wear is thus found. Using this method, the service life of mechanisms can be computed.更多还原