平面齿轮副的约束及自由度计算

Constraint and Degree of Freedom Calculation of Plane Gear Pair

在计算含齿轮副机构的自由度时常常会出错,错误原因就在于齿轮副引入的约束是一个还是两个。针对齿轮副自由度计算的这种出错原因,结合工程实例对齿轮副约束进行分析,得出了齿轮副引入一个约束和两个约束的条件,为正确计算含齿轮副机构的自由度提供了方便。

Errors are often made when calculating the degrees of freedom of a gear pair mechanism.The reason for the error is whether the constraints introduced by the gear pair are one or two.Aiming at the cause of this kind of error in the calculation of the degree of freedom of the gear pair,the constraints of the gear pair are analyzed in combination with an engineering example,and the conditions that the gear pair introduces one and two constraints are obtained.This facilitates the calculation of the degrees of freedom of the geared mechanism.