A single-degree-of-freedom flexible micro-positioning platform

Abstract

The invention discloses a one-freedom-degree flexible micro-positioning platform. The one-freedom-degree flexible micro-positioning platform comprises a motion input device, a flexible motion platform and a platform base used for fixing the flexible motion platform; and the flexible motion platform comprises two half motion mechanisms, and each half motion mechanism comprises a motion platform connected through flexible hinges and multi-stage differential motion levers. According to the design, displacement is amplified and can be accurately amplified on the conditions that the positions and the sizes of the flexible hinges and the levers are accurate; the design structure is simple, the occupied space is relatively small, displacement can be output stably through the symmetric structure, lateral additional displacement can be effectively removed, longitudinal coupling displacement errors of the platform can be reduced, the displacement amplification accuracy is improved, and the flexible hinges can be integrally machined easily due to the design, and assembly errors can be avoided. Displacement amplification is accurately realized in relatively-small space and at low cost, and the problem that large stroke and high accuracy of the flexible micro-positioning platform cannot be balanced is solved.

Description

technical field [0001] The invention relates to the technical field of mechanical displacement amplification equipment, and more specifically, relates to a single-degree-of-freedom flexible micro-positioning platform. Background technique [0002] At present, there are two mainstream methods to achieve large travel and high positioning accuracy of the motion platform: one is to use a macro-micro two-stage worktable, the macro-motion table achieves a large stroke, and the micro-motion table achieves the final positioning accuracy. The main idea of ​​this type of positioning platform design is to combine two types of motors, the DC motor controls the large-scale movement of the mechanism, and the piezoelectric ceramic actuator ensures the high precision of the end effector. This method overcomes the shortcoming of the traditional micro-manipulation robot with a small working space, but the overall drive system has a complex structure, large volume, high cost, and cannot be min...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a single-degree-of-freedom flexible micro-positioning platform, the structural design of the single-degree-of-freedom flexible micro-positioning platform can effectively solve the contradiction between large travel and high precision existing in the existing flexible micro-positioning platform other technical issues

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