One-piece complaisant precision positioning platform in three degrees of freedom and parallel redundancy degree in single layer

A precision positioning and degree of freedom technology, applied in the direction of workbench, machine table/bracket, supporting machine, etc., can solve the problems of affecting the working precision and increasing the difficulty of control, so as to achieve the goal of improving precision, increasing working flexibility and high precision Effect

Inactive Publication Date: 2007-08-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

In addition, the existing three-degree-of-freedom precision positioning platform generally has input and output coupling problems, which affects the working accuracy and increases the difficulty of control

Method used

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  • One-piece complaisant precision positioning platform in three degrees of freedom and parallel redundancy degree in single layer
  • One-piece complaisant precision positioning platform in three degrees of freedom and parallel redundancy degree in single layer
  • One-piece complaisant precision positioning platform in three degrees of freedom and parallel redundancy degree in single layer

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0018] As shown in accompanying drawing 1, the present invention comprises motion platform 2 and base 1, is characterized in that adopts four sets of displacement amplifying mechanisms 9 flexible hinges to connect between moving platform 2 and base 1; These four groups of amplifying mechanisms are 90 ° rotations Symmetrically distributed on the four sides of the motion platform.

[0019] Described displacement amplifying mechanism 9 is made of active component 3, flexible hinge 4,5,6,7 and connecting rod 8; Active component 3 and base 1 of displacement amplifying mechanism 9 are connected by flexible hinge 4, active component 3 The connecting rod 8 of the amplification mechanism is connected by a flexible hinge 5 , the active component 3 and the telescopic brake 10 are connected by a flexible hinge 7 , and the connecting rod 8 is connected to the mot...

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Abstract

This invention discloses a kind of single ply parallel connection three degree of freedom one-piece compliance accurate positioning platform that has redundancy. This invention includes base and motion platform. The motion platform and the base are connected by four group compliance positioning amplification frames. The four group amplification frames are in 900 rotating symmetry on the four sides of the motion platform. This invention can achieve nanometer positioning accuracy; the positioning platform has good operationality. It can avoid singular position, solve the coupling problem of input and output and increase its working flexibility. This invention can enlarge the motion scope by using secondary grade or more high level compliance amplification frame.

Description

technical field [0001] The invention relates to a compliant and precise positioning platform, in particular to a redundant compliant and precise positioning platform which can realize precise positioning along the X and Y directions and fine adjustment of the angle around the Z axis. Background technique [0002] Currently, none of the precision positioning platforms have drive redundancy. If the motion platform is in a singular configuration, one or several degrees of freedom will be lost and the ability to complete the task will be reduced. Therefore, the workability of the workbench can be improved by adding one or more drive inputs to meet the requirements of avoiding approaching singular configurations. This redundant precision positioning platform optimizes maneuverability and improves kinematics and dynamics. In addition, the existing three-degree-of-freedom precision positioning platform generally has input and output coupling problems, which affects the working ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16M11/20B25H1/00
Inventor 张宪民王华陈永健欧阳高飞
Owner SOUTH CHINA UNIV OF TECH
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