Micro-bearing friction torgue measuring instrument

A technology of friction torque and miniature bearings, which is applied in the field of measuring instruments, can solve the problems of low measurement accuracy of friction torque of miniature bearings, complex mechanical structure, large error of transmission mechanism, etc., to meet the requirements of test accuracy, simple mechanical structure, and eliminate friction Effects of Force and Vibration

Inactive Publication Date: 2007-11-07
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

The measurement method adopted by the measuring instrument still has the problem of complex mechanical structure and large error caused by the transmission mechanism, so the measurement accuracy of the friction torque of the miniature bearing is low

Method used

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  • Micro-bearing friction torgue measuring instrument
  • Micro-bearing friction torgue measuring instrument

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Embodiment Construction

[0025] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation is provided, but the protection scope of the present invention is not limited to the following embodiments.

[0026] As shown in Fig. 1 and Fig. 2, the present embodiment includes: a mechanical part, an electrical part and an embedded system, the mechanical part is connected with the input end of the electrical part through a wire and a USB interface, and the input and output terminals of the electrical part are connected with the electrical part through the USB interface respectively. The input and output ends of the embedded system are connected; the mechanical part includes: pendulum needle 1, bearing under test 2, bearing sleeve 3, DC servo motor 4, photoelectric encoder 5, reducer 6, bracket 8 of the DC servo motor syste...

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Abstract

The invention is a microtype bearing friction moment measurer, belonging to the field of measuring and control technique. And the invention comprises: mechanical part, electrical part and embedded system, where the mechanical part is connected with the input end of the electrical part through lead wires and USB interface, and the input and output ends of the electrical part are connected the input and output ends of the embedded system, respectively. And the invention adopts digital image processing technique, embedding technique and auto control technique to be able to accurately measure friction moment of a microtype bearing. And the measurer has simple structure, operating convenience and high measuring accuracy.

Description

technical field [0001] The invention relates to a measuring instrument in the technical field of measurement and control, in particular to a miniature bearing friction torque measuring instrument. Background technique [0002] When the bearing is running, relative motion occurs between the inner ring, outer ring, cage and rolling elements, and at the same time, a comprehensive torque that hinders the motion opposite to the direction of rotation is generated, which is the frictional torque of the bearing. Friction torque is an important parameter for bearing performance. Friction torque directly affects bearing temperature, noise, vibration and energy loss, thus affecting the performance of precision instruments and the accuracy of information transmission. [0003] The friction of rolling bearings mainly comes from the following aspects: [0004] 1) Pure rolling friction caused by material elastic hysteresis; [0005] 2) Friction caused by differential sliding on the roll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/08G01M13/04
Inventor 颜德田丁国清王志武于瑞涛代杰
Owner SHANGHAI JIAO TONG UNIV
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