实现空间约束轨迹离散点的平面连杆机构设计

Synthesis of Four-bar Linkage for Discrete Points of Path under Spatial Constraint

提出了一种平面四连杆机构的设计方法,通过自寻刚体合理的轨迹离散点,以四位置刚体导引铰链四杆机构的设计为理论基础,利用数值分析软件MATLAB得到圆心曲线以及与各连杆长度的关系图。结合实例的设计与分析,构造符合要求的四连杆机构。运用动力学分析软件ADAMS对该机构进行运动学分析,得到刚体关键点的轨迹曲线,验证了四连杆机构满足空间约束的要求。

This paper presents a design method of four-bar linkage,the discrete points of path are searched for,and the length of four-bar linkages are calculated based on the theory of four locations rigid body guidance.The graphs of the connection are drawn up between each linkages＇ length by MATLAB software.Combined with the design and analysis of the case given,the four-bar linkage is constructed.The graphs of the path curve of key point are received via analyzing the mechanism by ADAMS software,which proves the four-bar linkage can meet the requirement of design.