【摘要】 提出了一种简单、有效的解决高级杆组位置问题的方法——约束构件快速搜索法.它将复杂的高级杆组转化为一个约束构件、几个 级杆组和包含虚拟变量的虚拟原动件,建立被转化的 级杆组的位置参数与虚拟变量之间的函数关系,根据约束构件的装配条件形成优化目标,使用一维搜索方法获得原高级杆组的位置解.该方法具有很好的收敛速度,适用于任意复杂的高级杆组,对所提方法的原理和分析步骤进行了介绍,编制了通用的高级平面机构的可视化分析程序.通过对含RR-PR-RP 级杆组的多功能家用缝纫机送料机构的分析实例,演示了该方法的具体应用.更多还原

【Abstract】 This paper presented a simple and effective method to solve the position of higher class Assur groups by the method of quick searching method based on constraint link. It transforms higher class Assur group to one constraint link, Class Ⅱ Assur group(s), and virtual driving link defined by the virtual variable, and sets up the function relationship between position parameters of converted Class Ⅱ Assur group(s) and virtual variable. Based on the assembly condition of constraint link, the optimization goal is formed.Applying one-dimensional searching technology, the potential solutions of the position of the higher class Assur group are achieved with rapid mathematic convergence. This method is applicable for arbitrary complex Assur groups, and is convenience for use. The principle and procedure of the proposed method were shown. A versatile visual program was developed to simulate higher class planar mechanisms. Finally, an example of the feeding mechanism of multifunction domestic sewing machine with a RR-RP-PR Class Ⅲ Assur group was illustrated to demonstrate the new method.更多还原