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An abnormal vibration diagnosis method and system for an intelligent spindle

A technology of abnormal diagnosis and spindle, which is applied in the testing of mechanical components, testing of machine/structural components, instruments, etc., can solve the problems of inconvenient implementation, and achieve the effect of simple structure and easy implementation

Active Publication Date: 2021-08-17
深圳市玄羽科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this reflective optical intensity modulation optical fiber vibration measurement technology is not easy to implement, and can only achieve vibration measurement in one direction

Method used

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  • An abnormal vibration diagnosis method and system for an intelligent spindle
  • An abnormal vibration diagnosis method and system for an intelligent spindle
  • An abnormal vibration diagnosis method and system for an intelligent spindle

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Experimental program
Comparison scheme
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Embodiment 1

[0045] The present invention provides a vibration abnormality diagnosis system of an intelligent spindle. The main improvement of the system lies in the vibration data collection of the spindle in the radial plane. Therefore, the following content mainly focuses on the vibration data collection part of the system.

[0046] refer to Figure 1-4 , in the embodiment of the present invention, the system includes a vibration monitoring device 3 , the vibration monitoring device 3 is set on the output shaft 21 of the main shaft unit 2 , and the main shaft unit 2 is set on the frame 1 .

[0047] The vibration monitoring device 3 includes a vibration pickup ring 31 and a fixed ring 32 , both of which are sleeved on the output shaft 21 of the spindle unit 2 . Wherein, the vibration pickup ring 31 can vibrate with the vibration of the output shaft 21 ; and the fixed ring 32 is fixed on the frame 1 through a fixing member (not shown in the figure), so as to be fixed relative to the outpu...

Embodiment 2

[0070] refer to Figure 6-7 , on the basis of the above-mentioned embodiment 1, a plurality of elastic arms 33 are arranged between the vibration pickup ring 31 and the fixed ring 32, specifically, the elastic arms 33 are made of silica gel. The vibration pickup ring 31 is elastically connected to the fixing ring 32 through the elastic arm 33 . The elastic arm 33 can weaken the torsion force exerted by the output shaft 21 on the pickup ring 31 , further preventing the pickup ring 31 from rotating due to the rotation of the output shaft 21 .

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Abstract

The invention discloses a method and a system for diagnosing abnormal vibration of an intelligent spindle. A vibration pickup ring and a fixing ring are sleeved on the spindle, cantilevers are respectively arranged on the front, rear, left and right of the vibration pickup ring, and an optical path corresponding to the cantilever is arranged on the fixing ring. , a laser and a photodetector are respectively set at the entrance and exit of the optical path, and a fracture for the cantilever to be inserted is set on the optical path. The vibration pick-up ring can pick up the vibration of the main shaft in the horizontal and vertical directions in the radial plane. When the vibration of the main shaft is accompanied by the vibration of the main shaft, the vibration pick-up ring will drive the cantilever to move in the fracture, interfere with the transmission of light in the optical path, and change the photoelectric detection. light intensity received by the receiver. In this way, the light intensity received by the photodetector can be collected and the light intensity change can be calculated, the mapping relationship between the light intensity change and the vibration displacement can be obtained by calibration and least squares fitting, and then the main axis in the radial plane can be obtained according to the mapping relationship. According to the vibration situation obtained, the abnormal vibration of the main shaft can be diagnosed.

Description

technical field [0001] The invention relates to the technical field of spindle vibration detection and diagnosis, in particular to a method and system for abnormal vibration diagnosis of an intelligent spindle. Background technique [0002] With the rapid development of industrial big data technology, machine tools are also developing in the direction of flexibility, integration and intelligence. As the core functional part of the machine tool, the performance of the spindle determines the technical level of the machine tool, and the intelligence of the spindle has become an inevitable research and development trend. [0003] Existing studies believe that an intelligent spindle has at least the following characteristics: 1) Perception, that is, the spindle can perceive the running state of breeding, actively detect and communicate with the CNC system, operators, etc., and share this information; 2) Decision-making, that is, the spindle can handle autonomously Perceived info...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/028
CPCG01M13/028
Inventor 李鸿峰贾昌武谭国豪张宸
Owner 深圳市玄羽科技有限公司
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