Three-degree-of-freedom precision-positioning workbench

A precision positioning and worktable technology, applied in the direction of machine/support, supporting machine, mechanical equipment, etc., can solve the problems of increasing control difficulty, input and output coupling, and affecting work accuracy, so as to increase work flexibility and improve precision , to avoid the effect of accumulating errors

Inactive Publication Date: 2010-10-27
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Three-degree-of-freedom precision-positioning workbench
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  • Three-degree-of-freedom precision-positioning workbench

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Embodiment Construction

[0014] The specific implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples, but the protection scope of the present invention should not be limited thereby.

[0015] as attached figure 1 , figure 2 As shown, the three-degree-of-freedom precision positioning workbench of the present invention includes a work platform 5 and an enlarged base 1, and the work platform 5 and the enlarged base 1 are connected by three cylindrical rods 4. The enlarged base 1 is composed of three groups of secondary amplifying mechanisms vertically intersecting each other.

[0016] The cylindrical rod 4 is pushed by the spring 3 and is preloaded by the spring 3, and the cylindrical rod 4 can move in the enlargement base 1 with the expansion and contraction of the spring 3.

[0017] The working platform 5 has internal grooves perpendicular to each other on three adjacent surfaces, which are used to control th...

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PUM

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Abstract

The invention relates to a three-degree-of-freedom precision-positioning workbench, comprising the workbench and an enlarged base, wherein, the workbench and the enlarged base are positioned through three cylindrical rods; and three groups of two-stage enlarging mechanisms are vertically intersected to form the enlarged base. The precision-positioning workbench can reach nanoscale positioning precision, has good operability, effectively overcomes the problem of input and output coupling among the three groups of micrometric displacement enlarging mechanisms, and increases the operating flexibility.

Description

technical field [0001] The invention relates to a precision positioning workbench, in particular to a precision positioning workbench capable of precise movement along X, Y and Z directions. Background technique [0002] Currently, none of the precision positioning platforms have drive redundancy. The so-called redundancy refers to an extra amount considered from a safety point of view. This amount is to ensure that instruments, equipment, or certain tasks can operate normally under abnormal conditions. If the motion platform is in an abnormal situation, 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 driving inputs to meet the requirement of avoiding approaching abnormal situations. This redundant precision positioning stage optimizes maneuverability and improves kinematics and dynamics. In addition, the existing three-degree-of-freedom p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16M11/04F16M11/18
Inventor 王慧王宏峰
Owner UNIV OF SHANGHAI FOR SCI & TECH
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