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Probe type friction force sensor

A technology of friction sensor and detection needle, which is applied in the field of sensors to achieve continuous dynamic measurement, good economy and easy processing

Inactive Publication Date: 2009-10-21
JIANGSU WELM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In order to overcome the defect that the existing friction force detection sensor cannot be used for the measurement of friction force and friction coefficient in the speed reversal area, the purpose of the present invention is to provide a probe-type friction force sensor, which can accurately measure the friction coefficient of the moving pair, and especially realizes Measurement of the Friction Coefficient of Kinematic Pairs in the Velocity Reverse Area

Method used

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Embodiment Construction

[0010] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0011] Such as figure 1 As shown, the sensor of the present invention includes a probe 1 , a fastener 7 , a two-dimensional force sensitive element, and an adhesive resistance strain gauge 9 . The support 8, the tangential force elastic body 2, the positive pressure elastic body 3, and the rigid block 6 form a two-dimensional force sensitive element, and its connection relationship is: the tangential force elastic body 2 is parallel to the rigid block 6, and the first The elastic hinge 4 is connected, the positive pressure elastic body 3 is perpendicular to the rigid block 6, and the two are connected by the second elastic hinge 5, and the tangential force elastic body 2 and the positive pressure elastic body 3 are integrated with the support 8. The two-dimensional force sensitive element is an integrally processed non-combined element. The...

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Abstract

The probe-type friction sensor disclosed by the present invention includes a probe, a fastener, a two-dimensional force sensitive element and a resistance strain gauge, and the two-dimensional force sensitive element is composed of a support, a rigid block and a tangential joint integrated with the support. Force elastic body and positive pressure elastic body, the tangential force elastic body is parallel to the rigid block and hinged with the rigid block, the positive pressure elastic body is perpendicular to the rigid block and hinged with the rigid block, the support, the tangential force elastic body The central lines of four, the positive pressure elastic body and the rigid block are coplanar, the probe needle and the rigid block are adjustable and rigidly connected, and the resistance strain gauge is pasted on the force-sensitive parts of the tangential force elastic body and the positive pressure elastic body. The sensor of the present invention realizes the decoupling of two-dimensional force, solves the problems of friction and backlash in the existing friction force sensor, improves the detection accuracy, and realizes the continuous dynamics of the friction coefficient of the moving pair in the speed reverse zone Measurement. It is suitable for the detection of normal pressure, friction force and friction coefficient in rotary pair and moving pair.

Description

technical field [0001] The invention belongs to the technical field of sensors, and in particular relates to a detection pin type friction sensor. Background technique [0002] Researches at home and abroad in recent years have shown that the friction coefficient is related to the relative motion speed between components, and its nonlinear characteristics mainly exist near the area where the relative motion speed between components is zero. Therefore, the friction phenomenon near zero speed is a hot research issue at present. The speed reversal region widely exists in the kinematic pair contains the speed zero point, so it is of theoretical and practical significance to detect the change of the friction coefficient in this region. However, in the existing sensor structure, because of the friction and backlash between the combined components of the sensor, it not only affects the measurement accuracy, but also cannot realize the measurement of the friction coefficient in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/22G01N19/02
Inventor 刘宏昭李仁军原大宁王建平李鹏飞
Owner JIANGSU WELM TECH
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