曲柄摇杆机构急回运动特性与设计方法研究

On Quick-return Characteristics and Design Method for Crank-rocker Mechanism

采用运动几何学方法系统研究了曲柄摇杆机构的急回运动特性。对衡量急回运动特性程度的行程速比系数的可能取值范围进行了严密分析;针对满足任意给定行程速比系数条件,研究了设计曲柄摇杆机构命题中有关解的存在条件、解的取值范围以及相应的设计方法等问题。

Quick-return characteristics of crank-rocker mechanism are studied systematically based on the analyses of kinematic geometry. The possible values of advance-to-return-time ratio, which is used to measure the degree of quick-return for crank-rocker mechanism, are analyzed precisely. Several problems for the design of crankrocker mechanism, including solvability conditions, the existent domain of solutions and corresponding design methods are investigated, assuming the advance-to-return-time ratio is given.