Two-way beam multi-axis force sensor

A multi-axis force sensor and sensor technology, used in instruments, measuring forces, measuring devices, etc., can solve problems such as complex structure and measurement error, and achieve the effect of improving anti-eccentric load capacity, increasing external outline size, and compact structure

Inactive Publication Date: 2010-10-13
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing multi-axis force or four-axis force strain sensor has a complex structure, which requires multi-sections and multiple assemblies for structural combination, coordination, processing, assembly, interchangeability, etc. Factors will bring a certain measurement error

Method used

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  • Two-way beam multi-axis force sensor

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] The structure and characteristics of the bidirectional weighing beam type multi-axis force sensor of the present invention:

[0026] The design of the sensor is to use the symmetrical beam structure as the elastic element of the sensor, and paste the resistance strain gauge on the corresponding section position to complete the measurement of three forces (X, Y, Z axis) and one torque (around the Z axis). The structure adopts the form of two-way symmetrical beams, which ideally improves the anti-load section coefficient of the other axial directions under the action of the main shaft load, greatly improves the anti-bias load ability of the sensor and the anti-interference ability during measurement, and makes the structure of the sensor more compact. The sensor has an integrated multi-section structure, which eliminates the measurement errors cau...

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Abstract

The invention relates to a two-way beam multi-axis force sensor, wherein, the elastic element of the sensor is of a symmetrical beam structure; an upper bearing and connecting surface and a lower bearing and connecting surface are toroidal bodies and have the same structure; the lower side of the upper bearing and connecting surface is equipped with a Y-directional stress surface with a rectangular section, and the rectangular section is in transition connection with the upper bearing and connecting surface through an circular arc; the upper side of the lower bearing and connecting surface is equipped with an X-directional stress surface with a rectangular section, the X-directional stress surface is vertically arranged with the Y-directional stress surface in a crossing manner, and the rectangular section is in transition connection with the lower bearing and connecting surface through an circular arc; and a torque MZ stress surface with a round section is arranged between the X-directional stress surface and the Y-directional stress surface and is in transition connection with the directional stress surfaces though circular arcs. The two-way beam multi-axial force sensor improves other axial anti-loading section coefficients under the action of the main shaft load, thus improving the anti-loading capability of the sensor and the anti-interference capability while measuring; and an integrated multi-section structure eliminates the measurement errors caused by factors such as processing, assembly, interchange and the like of combined parts.

Description

technical field [0001] The invention relates to a multi-axis force sensor, in particular to a symmetrical beam type four-axis force sensor. Background technique [0002] The existing multi-axis force or four-axis force strain sensor has a complex structure, which requires multi-section and multiple components for structural combination, coordination, processing, assembly, interchangeability, etc. Factors will bring a certain measurement error. Contents of the invention [0003] The present invention is to provide a bidirectional weighing beam type multi-axis force sensor, which uses a symmetrical beam structure as the elastic element of the sensor, and pastes resistance strain gauges on the corresponding cross-sectional positions to complete the three forces (X, Y, Z axes) ) and a torque (around the Z axis), the structure adopts the form of a bidirectional symmetrical beam, which makes the anti-load section coefficient of the other axial directions ideally improved under ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/22
Inventor 胡飒英石钢杨斐沈旭栋徐华
Owner SHANGHAI INST OF TECH
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