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Flexible hinge positioning device based on differential motion lever principle

A technology based on the principle of flexible hinges and levers, applied in the direction of workbenches, manufacturing tools, etc., can solve the problems of difficult to achieve high resolution, low rigidity, large volume, etc., and achieve the effect of compact structure, high rigidity, and high resolution

Inactive Publication Date: 2012-06-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the current flexible hinge positioning platform that it is difficult to achieve hig

Method used

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  • Flexible hinge positioning device based on differential motion lever principle
  • Flexible hinge positioning device based on differential motion lever principle
  • Flexible hinge positioning device based on differential motion lever principle

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Experimental program
Comparison scheme
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specific Embodiment approach 1

[0007] Specific implementation mode one: combine Figure 1 to Figure 4 Describe this embodiment, this embodiment includes a lever housing 1, a first lever 2, a second lever 3, a first input platform 4, a second input platform 5, an output platform 6, a first actuator 14, a second actuator Actuator 15, first fastening screw 16 and second fastening screw 17, lever housing 1 is provided with front and rear transparent lever actuating chamber 1-1, first lever 2 is arranged in lever actuating chamber 1-1 and the lower end surface of the first lever 2 is connected to the inner wall of the corresponding lever housing 1 through the first flexible hinge 7, the first input platform 4 is arranged above the first lever 2, and the first input platform 4 The lower end face of the first lever 2 is connected with the upper end face of the corresponding first lever 2 through the second flexible hinge 8, the second lever 3 is arranged on the upper right in the lever actuating cavity 1-1, and th...

specific Embodiment approach 2

[0008] Specific implementation mode two: combination figure 2 and image 3 Describe this embodiment, the first flexible hinge 7, the second flexible hinge 8, the third flexible hinge 9, the fourth flexible hinge 10 and the fifth flexible hinge 11 of this embodiment are all circular flexible hinges, and the sixth flexible hinge 12 and the seventh flexible hinge 13 are right-angle flexible hinges. In the present invention, the transmission part of the input end adopts a circular flexible hinge, and the transmission part of the output end adopts a right-angle flexible hinge, which can ensure sufficient rigidity of the transmission part and sufficient flexible deformation capacity at the output. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0009] Specific implementation mode three: combination figure 2 and image 3 To illustrate this embodiment, the radius R of the circular flexible hinge of this embodiment is 0.3 mm to 1.0 mm, the thickness s of the thinnest part of the circular flexible hinge is 0.2 mm to 1.5 mm, and the thickness h of the right-angle flexible hinge is 0.2 mm. mm ~ 0.5mm, the length f of each right angle side of the right angle flexible hinge is 2.0mm ~ 5.0mm. Other components and connections are the same as those in the first embodiment.

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Abstract

The invention discloses a flexible hinge positioning device based on a differential motion lever principle, which relates to a big-stroke high-resolution micro-driving positioning device so as to overcome the defect that the traditional flexible hinge positioning platform is difficult to achieve high resolution under the big stroke. A first lever, a second lever, a first input platform, a second input platform and an output platform are all arranged on a lever actuating cavity; the first lever and the inner wall of a lever shell are connected by a first flexible hinge; the first input platform and the first lever are connected by a second flexible hinge; the second lever and the first input platform are connected by a third flexible hinge; the second input platform and the second lever are connected by a fourth flexible hinge; the output platform and the second lever are connected by a fifth flexible hinge; the output platform and the inner wall of the lever shell are connected by a sixth flexible hinge and two seventh flexible hinges; a first actuator drives the first input platform; and a second actuator drives the second input platform. The flexible hinge positioning device is used for precisely positioning the submillimeter-grade moving stroke.

Description

technical field [0001] The invention relates to a large-stroke high-resolution micro-drive positioning device. Background technique [0002] With the rapid development of micro / nano technology, in high-tech fields such as micro-mechanical parts assembly, MEMS (micro-electromechanical system) assembly, cell manipulation, and precision optics, there is an urgent need for a micro-drive positioning device with a large stroke and high resolution. At present, most of these positioning devices use the principle of series levers, that is, through multi-stage lever mechanisms connected in series, the input displacement is amplified step by step to meet the output range requirements. The positioning platform based on this principle has a bottleneck problem in coordinating large travel and high resolution. Because the series lever principle has only one input, the required stroke range is achieved by amplifying the input. When the stroke and resolution of the actuator at the input ar...

Claims

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Application Information

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IPC IPC(8): B25H1/00
Inventor 荣伟彬吴振广王乐锋谢晖孙立宁
Owner HARBIN INST OF TECH