System and method for on-site monitoring of grinding wheel working state

Abstract

The invention relates to an in-place monitoring system and method for the work state of a grinding wheel. The system comprises an acoustic emission signal collection device, an acoustic emission signal processing system, a visual detection device, an image processing system and a diagnostic system. A fluid type acoustic emission sensor is adopted by the acoustic emission signal collection device.The acoustic emission signal processing system comprises a characteristic parameter extraction module and a judgment module. A CCD high-definition camera is adopted by the visual detection device. Theimage processing system comprises a grey level extraction module, an area calculation module and an index value calculation module. The diagnostic system comprises a judgment module and an alarm module, and whether an alarm needs to be given out or not and whether the grinding wheel needs to be repaired or not are judged according to index values. The in-place monitoring method for the work stateof the grinding wheel is further provided. The method comprises the steps that the fluid type acoustic emission sensor is firstly utilized for collecting acoustic emission signals, then whether the phenomena that abrasive particles are worn and broken and fall off happen or not is judged according to comparison of emission characteristic parameters and threshold values, and if yes, the CCD high-definition camera is started to shoot the shape of the surface of the grinding wheel; the image of the shape of the surface is processed, and the area of a defect area and the index values are obtained; and finally whether an alarm needs to be given out or not and whether the grinding wheel needs to be repaired or not are judged according to the index values.

Description

technical field [0001] The invention relates to the technical field of precision grinding, in particular to an on-site monitoring system and method for the working state of a grinding wheel. Background technique [0002] With the development of high-speed and high-precision grinding technology, grinding has gradually been applied to various precision and high-precision processing occasions, and involves various fields of mechanical processing. Grinding wheel is the most important tool in grinding process and grinding machine, and the abrasive grain of grinding wheel plays an important role in grinding performance. When the abrasive grains wear, break and fall off, the cutting ability of the grinding wheel will be degraded, the grinding force and grinding temperature will be increased, and the service life of the grinding wheel will be reduced. Therefore, it is very critical and necessary to identify the wear, breakage and shedding of abrasive grains during the grinding proc...

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Problems solved by technology

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is that the prior art has low detection efficiency, low degree of intelligence, low detection accuracy, and cannot give specific index values ​​for evaluating abrasive wear, rupture and shedding

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