Annular elastic pair-containing three-degrees-of-freedom micro operating table

Abstract

The invention provides an annular elastic pair-containing three-degrees-of-freedom micro operating table, which comprises a fixed platform, a movable platform, micro-displacement driving devices and three branched chains connected between the fixed platform and the movable platform, and is characterized in that: three micro-displacement driving devices are arranged on the fixed platform; each branched chain comprises an elastic sliding pair and an annular elastic pair, wherein the side wall of the annular elastic pair is fixedly connected with the movable platform and one side of the elastic sliding pair respectively; two connecting parts are positioned on the same plane passing through a centre line of the annular elastic pair; and the middle part of the other side of the elastic sliding pair is fixedly connected with a driving end of each micro-displacement driving device. By introducing the annular elastic pair to construct a parallel micro operating table, due to the characteristic of short branched chains, the accumulative error is small, the operating table has higher bearing capacity and higher rigidity, and the movable platform can output two-dimensional translation and one-dimensional rotation around a normal vertical to a translational plane.

Description

technical field [0001] The invention belongs to the field of manufacturing technology, and in particular relates to a three-degree-of-freedom micro-manipulation table with an annular elastic pair. Background technique [0002] At present, the scientific field of human research has penetrated into the microscopic fields that we cannot directly feel, such as medicine, biology, optics, materials and engineering, etc. The objects of work are getting smaller and smaller, so special tools and means, therefore, the research on the micro-motion platform has become a key technology in the microscopic field. The parallel micro-movement platform using flexible hinges has the characteristics of no friction, no gap, fast response, and compact structure, so it is widely used in micro-operation fields such as chromosome cutting, chip manufacturing, processing and assembly of micro-electromechanical products. [0003] For example, Hudgens and Tesar, Department of Mechanical Engineering, Un...

AI Technical Summary

Problems solved by technology

Since the structure of the multi-degree-of-freedom micro-manipulator or micro-robot is relatively complex, and it is difficult to overcome the problem of motion coupling between each degree of freedom, it is not suitable to use the above-mentioned multi-degree-of-freedom positioning mechanism in some occasions that require fewer degrees of freedom.

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