Three-branch chain six-freedom degree parallel flexible hinge micromotion mechanism

A technology of flexible hinges and degrees of freedom, applied in manipulators, program-controlled manipulators, manufacturing tools, etc., can solve problems such as difficult assembly, complex structure, and large assembly errors

Inactive Publication Date: 2007-05-16
HARBIN INST OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the current conventional six-branch six-degree-of-freedom parallel micro-motion mechanism with complex structure, difficult assembly and large assembly errors, and provide a three-branch six-degree-of-freedom parallel flexible mechanism with simple structure and easy to ensure accuracy. hinge micro mechanism

Method used

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  • Three-branch chain six-freedom degree parallel flexible hinge micromotion mechanism
  • Three-branch chain six-freedom degree parallel flexible hinge micromotion mechanism
  • Three-branch chain six-freedom degree parallel flexible hinge micromotion mechanism

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Embodiment Construction

[0018] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0019] Referring to Fig. 1, the composition of the three-branched six-DOF parallel flexible hinge micro-motion mechanism includes a base platform 5, a moving platform 1, a drive unit set on the base platform, and three joints respectively connected to the drive unit and the moving platform through flexible hinge joints. a pole 2. Combined with Fig. 2 and Fig. 3 simultaneously, described driving unit comprises three elastic plates 3 installed on the base platform and piezoelectric ceramic drivers 7 connected with the elastic plates, two piezoelectric ceramic drivers are connected on each elastic plate, Two piezo drivers are arranged at right angles. At the same time combined with Figure 4, there are two types of flexible hinge joints at both ends of the pole: one is a flexible ball joint 6 between the pole and the elastic plate, and a flexible rotary hinge 4 betwe...

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Abstract

The invention relates to a three-chain six-freedom parallel flexible hinge micro motion device, wherein it comprises base platform, movable platform, driver on the base platform, and three support rods via flexible joints connected to the driver and movable platform. Said driver comprises three flexible plates on the base platform and piezoelectric ceramic driver connected to the flexible plates; three flexible plates are integrated processed, while each plate is connected to two piezoelectric ceramic drivers in right angle. The invention has compact structure and low installment error.

Description

(1) Technical field [0001] The invention relates to a parallel mechanism, in particular to a three-branch six-degree-of-freedom parallel micro-motion mechanism driven by piezoelectric ceramics and containing flexible hinges. (two), background technology [0002] As an important part of the micro-operating system, the micro-robot has broad application prospects in the fields of precision mechanical engineering, optical adjustment, optical fiber operation, ultra-precision machining, and bioengineering. With the rapid development of micro-nano technology, higher requirements are put forward for multi-degree-of-freedom micro-robots with nano-level positioning accuracy. Compared with the series structure, the parallel micro-manipulator has the advantages of compact structure, high rigidity, and no accumulation of errors, so it has been extensively studied. At present, the six-degree-of-freedom parallel micro-robots mostly use the Stewart platform or its deformed structure. Due t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25J9/08
Inventor 荣伟彬孙立宁王乐锋
Owner HARBIN INST OF TECH
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