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Leaf-spring type flexible hinge of null-axis shift

A flexible hinge and reed type technology, which is applied in the direction of pivot connection, can solve the problems such as the inability to achieve zero-axis drift

Active Publication Date: 2018-10-16
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, according to the content provided in this invention, through further simulation analysis, it is found that in the deformation process, assuming that the right outer rotating part 2 is fixed, at this time, because the position of the cross reed 4 connected to the middle rotating part 3 is offset relative to the fixed end, As a result, the axis drift symmetry points of the two pairs of cross reeds deviate from the ideal rotation center axis, and the axis drift of the two pairs of cross reeds is not symmetrical about the ideal rotation center axis, and the greater the stroke, the farther the symmetry point is from the ideal rotation center axis. Can not achieve zero-axis drift

Method used

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  • Leaf-spring type flexible hinge of null-axis shift

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0020] Such as figure 1 As shown, a zero-axis floating reed type flexible hinge at least includes an upper rotating member 1, a lower rotating member 2, a first cross reed 3, a second cross reed 4, a third cross reed 5, a fourth cross The reed 6; the upper rotating part 1 and the lower rotating part 2 are placed coaxially, and there is a certain gap between them to prevent contact and friction caused by out-of-plane force (abnormal force) during relative movement;

[0021] The first cross reed 3, the second cross reed 4, the 3rd cross reed 5, the 4th cross reed 6 are arranged in the collinear mode of crossing lines; the first cross reed 3, the second cross reed 4 The arrangement of the reeds is symmetrical to that of the third intersecting reed 5 and the fourth intersecting reed 6 along the intersection line;

[0022] The upper or lower end of the first cro...

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Abstract

A leaf-spring type flexible hinge of a null-axis shift comprises a left intersecting leaf spring set, a right intersecting leaf spring set, a lower rotating part and an upper rotating part, wherein the lower rotating part and the upper rotating part are connected through the left intersecting leaf spring set to form a flexible hinge body set; the lower rotating part and the upper rotating part areconnected through the right intersecting leaf spring set to form another flexible hinge body set; the ideal rotating center shafts of the two flexible hinge body sets are coaxial; and moreover, the left intersecting leaf spring set and the right intersecting leaf spring set of the two flexible hinge body sets are symmetrically arranged. With the adoption of the leaf-spring type flexible hinge ofthe null axis shift, the rotating accuracy is greatly improved, and the null-axis shift of the flexible hinge is achieved.

Description

technical field [0001] The invention relates to a zero-axis floating reed type flexible hinge. Background technique [0002] Rigid articulations can cause hysteresis, backlash, and wear issues, greatly reducing the overall accuracy and life of the mechanism. As a substitute for traditional joints, the flexible hinge is designed as a weak link between two adjacent rigid parts. Through the elastic bending deformation of the material itself to achieve high-precision relative rotational motion, it has no friction loss, no lubrication, and no hysteresis. , no maintenance, compact structure, easy to manufacture and so on. [0003] Due to the limitations of its own structure, the elastic deformation of the material of the flexible hinge is distributed rather than concentrated in one point during the rotation process, so the ideal rotation center will drift to a certain extent with the change of the rotation angle, which is called axis drift. . The cross-reed flexible hinge has g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C11/12
CPCF16C11/12
Inventor 杜绍扬刘江南伍绍青
Owner HUNAN UNIV
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