Planar three-degree-of-freedom moving platform with large rotation angle

Abstract

The invention relates to a planar three-degree-of-freedom moving platform with a large rotation angle. The platform comprises a driving module and a bearing module, the bearing module is mainly composed of bearings, a guide rail seat, linear guide rails, sliding blocks, bearing seats and a moving platform body, and the driving module is mainly composed of three driving module bodies, an outer gear ring and a round guide rail; the driving module body A and the driving module body B are installed on the round guide rail, and the driving module body C is installed above the driving module body A and the driving module body B, the driving module body C drives the platform to move through a lead screw nut mechanism, and the driving module body A and the driving module body B are meshed through a gear to drive the driving module body C to move. Moving and rotating of the moving platform can be realized by controlling the rotating directions and rotating speeds of the three driving module bodies, and a planar three-degree-of-freedom movement of two-movement-one-rotation of the moving platform can be realized; the moving platform has the advantages of being low in height and large in bearing capacity, and large-angle rotation of the moving platform around the axis of the moving platform can be achieved.

Description

technical field [0001] The invention belongs to the field of robots, in particular to a motion platform. Background technique [0002] In the field of parallel attitude adjustment, with the development of technology, the overall height of the attitude adjustment mechanism is required to be reduced as much as possible, and the working space is required to be as large as possible. Multiple independent motion branch chains, multiple motion branch chains are independently driven to jointly realize the attitude adjustment requirements of the moving platform. For example, most of the current three-degree-of-freedom attitude adjustment systems use 3-RRR mechanisms and 3-RPR mechanisms to achieve 2 degrees of freedom of movement and 1 rotation, so as to meet the requirements for attitude adjustment. For example, in 2017, the Chinese patent with publication number CN205889156U disclosed a three-degree-of-freedom planar flexible parallel platform device, including three parallel bran...

AI Technical Summary

Problems solved by technology

This kind of parallel platform composed of multiple motion branch chains is often high in height, with limited motion space, and it is difficult to achieve the working requirements of low height and large-angle rotation.

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