急回运动平面连杆机械的解析设计及优化设计

采用平面连杆机构并通过适当的设计措施使其运动输出构件具有急回，是机械设计中用来提高机械的工作效率，改善机构的运动和动力性能的一种常用的设计手段。但长期以来人们一直沿袭采用传统的图解设计方法，从而制约了设计精度和设计效率的提高，更重要的是：由于图解法难以把机构综合与优化设计很好地结合起来，从而也制约了机构设计质量的提高，笔者首先志出了具有急回运动平面连杆机构（主要是曲柄摇杆和曲柄滑块机构）运动综合的解析设计方程，从而解决了图解设计带来的上述问题，采用CAD技术不仅大大地提高设计精度和设计交，而且通过对机构进行运动和动力的多目标优化设计，获得了一些重要结论，这些结论对指导这类机构的设计有指导意义。

Analytical and Optimum Design Method for the Quick-Return Mechanisms

This paper proposes an analytical design method for the quick-return mechanisms such as the four-bar linkage and the offset slider crank and developes an optimum design method for those mechanisms in which the time-ratio and the minimum transmission angle are given simultaneously. Using this method,the maximum value of the time-ratio is given only. The quick-return mechanisms in which the minimum transmission angle should be the maximum can be designed easily using the proportion of the links presented in the tables in this paper.