基于射影变换的柔性铰链构型综合  

Configuration synthesis of flexural joint based on projective transformation

作　　者：裴旭[1] 于靖军[1] 赵山杉[2] 

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191 [2]中国运载火箭技术研究院研究发展中心,北京100076

出　　处：《机械设计》2013年第4期34-36,共3页Journal of Machine Design

基　　金：国家自然基金资助项目(51275552;50905005);全国优秀博士学位专项资助项目(201234)

摘　　要：柔性机构应用中,大行程柔性铰链可以满足较大运动行程和高精度兼备的应用场合。但现有的大行程柔性铰链构型匮乏,因此迫切需要对其进行构型综合研究。通过建立平面、圆、圆柱及球面空间的映射关系,在直线机构和转动机构之间找到了一种映射关系,例如可将一个点绕着一个固定圆心的转动分别看作是在圆、圆柱面、或球面坐标系下的直线运动,因此如果已知一种柔性直线导向机构,就可以衍生出多种转动型柔性铰链。反之,也可从现有的转动型柔性铰链反推出更多的直线导向机构构型。In the application of the compliant mechanism, the flexural joints with large-motion-of-range can be useful in the occa- sions that need relatively larger stroke and higher precision at the same time. However, the present types of such flexural joints are lacked. The new configuration synthesis method is needed to find more flexural joints with large-motion-of-range. Based on geometric projective transformation among the plane, circle plane, cylinder and spherical surface, a mapping relationship between linear motion and rotational motion is founded. For example, the rotation of a point can be regarded as a straight-line movement respectively in the circle, cylindrical and spherical coordinate systems. Therefore, a mapping relationship between the compliant straight-line mechanisms and rota- tional flexural joints is buih. By the method, several new types of flexural joins can be synthesized from a known flexural joint.

关 键 词：大行程柔性铰链 射影变换 构型综合 

分 类 号：TH132.3[机械工程—机械制造及自动化]