Elastic hinge parallel 6-UPUR six-dimension force-measuring platform

A 6-UPUR, elastic hinge technology, applied in the field of force sensors, can solve problems such as limitation and pre-tightening force variation, and achieve the effects of convenient processing, stable performance and simple structure

Inactive Publication Date: 2008-08-20
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the elastic spherical joint is difficult to bear large loads, it is limited in the development of large-range six-dimensional force sensors.
In addition, a 6-SPS six-dimensional force sensor structure with a middle preload branch has also been disclosed by Chinese patent ZL99102526.1. This structure can eliminate zero-crossing errors through the middle branch preload, but there is a change in the preload force. And other issues

Method used

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  • Elastic hinge parallel 6-UPUR six-dimension force-measuring platform

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Embodiment Construction

[0019] figure 1 It is an embodiment disclosed by the present invention. The integral one-dimensional force measurement branch consists of two parts: the integral UPU structure and the upper positioning block. The integral one-dimensional force measuring branch is connected with the foundation platform 1 through fastening bolts 2 , cylindrical pins 4 and lower positioning block 3 , and is connected with the loading platform 11 through fastening bolts 10 . The shape of the integrated elastic universal hinge (7, 7′) in the integrated UPU structure is a cuboid, and two cut grooves are respectively processed on two sets of opposite sides of the hinge, and the angle between the two cut grooves is 110°. The intersecting lines of the central planes of the group cut grooves are vertical and intersect, so that the cuboid becomes an integrated elastic universal hinge whose axes are vertically intersected, and is symmetrically distributed at both ends of the one-dimensional force measuri...

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Abstract

The present invention discloses an elastic hinge parallel-connected 6-UPUR six-dimensional force measuring platform. The invention has the following characters: the integral one-dimensional force-measuring branch is composed of an integral UPU structure and an upper positioning block (8): the integral UPU structure is obtained by one-time manufacturing the elastic material, the structure comprises two symmetric integral elastic universal hinges (7 and 7'), the middle part is manufactured with a one-dimensional tension/pressure sensor structure (5), the lower end is manufactured with a column pinhole (6), and the upper end is manufactured with a screw bolt (13); the upper positioning block (8) is an elastic element which is molded by one-time manufacturing, and an elastic rotating hinge is included whereon. Basing on the principle of the novel 6-UPUR parallel-connected mechanism the invention obtains a simple parallel-connected six-dimensional force-measuring platform structure totally composed of single-freedom elastic revolute pair and realizes the decomposition of the six-dimensional force to six branches. The invention has the advantages of simple structure, convenient manufacturing, being easily analyzed and founded with a model, stable capability and broad adaptability. The one-dimensional force-measuring branch of the invention can be replaced with the one-dimensional linear micro-driving branch to facilitate that the six-dimensional force-measuring platform becomes a six-dimensional precise positioning platform.

Description

technical field [0001] The invention relates to the technical field of force sensors, in particular to an elastic hinge parallel 6-UPUR six-dimensional force measuring platform. Background technique [0002] The key to measuring the six-dimensional force is to convert the six components of the force into six electrical signal outputs. For this reason, people have designed many kinds of structures of six-dimensional force sensor sensitive elements, such as three vertical rib structure, cylindrical structure, double ring structure, four vertical rib structure, cross structure, non-radial three-beam structure and eight vertical rib structure. Wait. These sensors have their own characteristics, but most of them have different problems such as complex structure, low stiffness, low strain sensitivity, and difficult decoupling. Therefore, some scholars at home and abroad have introduced the parallel structure into the design of the force sensor structure of the six-dimensional fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/22
Inventor 赵铁石赵延志刘丽欢
Owner YANSHAN UNIV
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