A method for detecting the runout of the grinding wheel's outer circle based on a laser displacement sensor

Abstract

The invention relates to a method for detecting the runout of the outer circle of a grinding wheel based on a laser displacement sensor, which comprises the following detection steps: firstly, the laser displacement sensor is installed in front of the outer surface of the grinding wheel to be tested, and the detection equipment is connected to the circuit; then according to the measured grinding wheel The measurement conditions determine the signal sampling frequency of the laser displacement sensor and the sampling length of each measurement, set the signal sampling frequency fk and sampling length Ls of the laser displacement sensor through computer software, and input the signal sampling frequency fk and sampling length Ls In the controller of the laser displacement sensor, when the tested grinding wheel rotates, the laser displacement sensor detects the outer surface of the tested grinding wheel, the sampled data is transmitted to the computer, and then the sampled data is processed and analyzed, and finally the outer circle of the tested grinding wheel is obtained. Bounce value. The method realizes the real-time and precise measurement of the radial runout of the outer circle of the grinding wheel.

Description

technical field [0001] The invention belongs to the technical field of mechanical precision machining, and relates to a method for measuring the runout of the outer circle of a non-contact grinding wheel, in particular to a method for detecting the runout of the outer circle of the grinding wheel based on a laser displacement sensor. Background technique [0002] The grinding wheel is a circular bonded abrasive tool with a through hole in the center made of abrasives and bonds. It rotates at high speed during use. etc. for grinding. Grinding is the main processing method of precision machining. In recent years, with the development of high-speed grinding and ultra-precision grinding technology, higher requirements have been put forward for grinding wheels and their applications. In order to ensure the grinding precision and quality of the grinding wheel, it is necessary to precisely measure and control the external dimension parameters of the grinding wheel, especially the ...

AI Technical Summary

Problems solved by technology

However, the existing public information shows that the surface topography parameters of the grinding wheel obtained by the laser displacement sensor, such as the arithmetic mean height, root mean square deviation, maximum peak value, maximum valley value, root mean square slope area ratio, structural shape ratio, skewness, Kurtosis, peak density, etc., cannot be used as the characterization parameters of the outer circle runout of the grinding wheel, and are affected by complex detection conditions such as high speed, coarse abrasive grains, etc., and the detection object. The data measured by the laser displacement sensor contains more noise points, and It is not suitable for frequency band filtering processing, therefore, the use of laser displacement sensors to detect the outer circle runout of the grinding wheel requires special data processing of the sensor measurement data

At present, there is no scientific, universal and efficient detection method for the outer circle runout of grinding wheels in the industry

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