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Fixed-rotation-center type multi-axis full-flexible hinge of series structure

A technology of rotation center and series structure, applied in the direction of pivot connection, etc., can solve the problems of unstable rotation center and difficult processing, and achieve the effect of large movement space range, small size and simple structure

Active Publication Date: 2020-12-29
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to propose a multi-axis fully flexible hinge with a fixed rotation center in series structure to solve the problems of traditional multi-axis flexible hinges in the application of precision machinery Problems such as the center of rotation is not fixed and processing is difficult

Method used

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  • Fixed-rotation-center type multi-axis full-flexible hinge of series structure
  • Fixed-rotation-center type multi-axis full-flexible hinge of series structure
  • Fixed-rotation-center type multi-axis full-flexible hinge of series structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This example figure 1 As shown, the multi-axis fully flexible hinge with a fixed rotation center in series structure includes an upper connection part (2), two middle connection parts (4) and a lower connection part (5) sequentially connected in series with three flexible hinges (3). The upper connecting part (2) and the lower connecting part (5) have upper connecting holes (1) and lower connecting holes (6) conveniently connected with other mechanisms. The upper connection part (2), the middle connection part (4) and the lower connection part (5) are all three-layer composite structures, including two upper and lower hard plates, and a flexible film in the middle. The three flexible hinges (3) are obtained by cutting a long strip at the same position on the front and back of the composite board between the two connecting parts, exposing the flexible film in the middle, and forming a long thin-walled structure penetrating at both ends, so that the flexible hinge The co...

Embodiment 2

[0020] This example figure 2 As shown, the multi-axis fully flexible hinge with a fixed rotation center in series structure includes an upper connection part (2), a middle connection part (4) and a lower connection part (5) connected in series with two flexible hinges (3). (2) and the lower connecting part (5) have an upper connecting hole (1) and a lower connecting hole (6) conveniently connected with other mechanisms. The middle connecting part (4), the upper connecting part (2) and the lower connecting part (5) are all three-layer composite structures, including two upper and lower hard boards, and a flexible film in the middle. The two flexible hinges (3) are obtained by cutting a long strip at the same position on the front and back of the composite board between the two connecting parts, exposing the flexible film in the middle, and forming a long thin-walled structure that runs through both ends, so that the flexible hinge The connecting parts on both sides can perfor...

Embodiment 3

[0023] This example Figure 4 As shown, the fixed rotation center multi-axis fully flexible hinge of the series structure is a whole, and the flexible hinge (3) is formed by directly processing three long grooves on the plate material, and the rotation of the three flexible hinges (3) The axes intersect at a point in space, and the intersecting point in space is the fixed rotation center of the multi-axis fully flexible hinge. The fixed center of rotation multi-axis fully flexible hinge of this series structure can act as a spherical hinge.

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Abstract

The invention relates to a fixed-rotation-center type multi-axis full-flexible hinge of a series structure. The fixed-rotation-center type multi-axis full-flexible hinge comprises an upper connectingpart, n single-axis flexible hinge bodies, n-1 middle connecting parts and a lower connecting part, wherein the rotation axes of the n single-axis flexible hinge bodies are intersected at one point inthe space, so that the multi-axis full-flexible hinge has a fixed rotation center, when the number of the flexible hinge bodies is different, the multi-axis full-flexible hinge can achieve differenthinge functions. when n is 2, the hinge can be used as a hooke joint, and when n is 3, the hinge can be used as a spherical hinge. The fixed-rotation-center type multi-axis full-flexible hinge of theseries structure has the advantages of being simple in structure, small in size, free of movement gaps and backlash, large in movement space range, easy to machine and integrate, low in cost and the like, and the design and integration problems of a multi-axis flexible hinge in application of micro-precision machines, micro-robots and the like are solved.

Description

technical field [0001] The invention relates to the field of compliance mechanisms, in particular to flexible hinges. Background technique [0002] Facing the miniaturization and lightweight development needs of precision mechanical structures and micro-robots, traditional rigid joints, such as cross universal joint couplings, ball joint bearings, etc., have large mass and volume, and cannot be manufactured in an integrated manner. There are disadvantages such as friction and wear, and it is becoming more and more difficult to meet the needs of the field of precision machinery and micro-robots, and it cannot be used to achieve high-precision positioning. Using compliant mechanisms to realize joints is an effective way to solve the above problems. The flexible hinge mainly realizes the rotation of the connecting part through the deformation of the compliant rod in the mechanism. It has the advantages of small mass, no friction, no motion gap, no hysteresis, no assembly, no l...

Claims

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Application Information

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IPC IPC(8): F16C11/04F16C11/06F16C11/12
CPCF16C11/04F16C11/06F16C11/12
Inventor 袁刚张正发王代华
Owner CHONGQING UNIV
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