【摘要】 首次划分了二自由度平面五杆机构双曲柄存在的充分条件和必要条件。根据格拉肖夫定理推导出二自由度五杆机构的双曲柄存在充分条件 ;根据装配条件推导了二自由度五杆机构的双曲柄存在的必要条件更多还原

【Abstract】 Sufficient condition and necessary condition for the existence of double crank of plnnar five - bar linkage with two free degrees are differentiated in this paper for the first time. The sufficient condition of double crank is deduced according to Grashov’s theorem. The necessary condition for the existence of double crank of five - bar linkage with two degree of freedoms is derived on the basis of assembling conditions.更多还原