两连架杆垂直位形直线导路机构综合及分析  

Synthesis and Analysis on Straight-line Guiding Mechanism with Two Vertical Rotating Links

作　　者：钱卫香[1] 崔建鹏 

机构地区：[1]西安科技大学机械工程学院,西安710054 [2]航天四院41所,西安710025

出　　处：《组合机床与自动化加工技术》2016年第11期60-63,共4页Modular Machine Tool & Automatic Manufacturing Technique

摘　　要：当两连架杆处于垂直位形时,在给定机架长度和欲逼近直线上的点及方向角的条件下,采用解析几何法并结合计算机可视化技术建立机构综合模型求解满足运动学要求的具有三阶密切直线机构全解。针对无穷多近似直线机构寻优难问题,分析综合机构的直线性能及其它感兴趣的运动学属性并实现机构属性的图形可视化,施加运动学约束,计算可行机构图形解域,从中寻找全局最优机构解,最后通过设计示例验证综合模型与分析方法的正确性和可行性。For given frame length, a point on the prescribed straight line and its orientation, the mathematical model under the configuration of two vertical rotating links was established by the method of analytic geometry and computer visualization technology. It can be used to solve all of possible straight-line mechanism solutions with three-order osculating straight lines which meet preset kinematic demands. But it is difficult to select desired straight-line mechanisms. Mechanism properties of interested including straightness were analyzed and the graphical visualization of the property information was implemented. Feasible solution regions adhering to design constraints were visually represented. And it can guide designers to find the global optimal mechanism. The results of synthesis examples verified the correctness and effectiveness of the proposed model and method.

关 键 词：直线导路机构 机构综合 鲍尔点 曲率驻点曲线 

分 类 号：TH112.1[机械工程—机械设计及理论] TG506[金属学及工艺—金属切削加工及机床]