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.
出处
《机械设计》
CSCD
北大核心
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)
