Quantitative measurement and characterization method of abrasive wear of micropowder diamond grinding wheel

Abstract

The invention provides a method for quantitative measurement and characterization of micro-powder diamond grinding wheel abrasive wear, which includes the following steps: 1) Obtaining the micromorphology of different positions on the surface of the grinding wheel under wear and tear conditions; 2) Obtaining an image RGB matrix; 3) Removing the Burr noise; 4) Use differential operation for image enhancement; 5) Extract the area corresponding to the wear particles in the image; 6) Binarize the overall image; 7) Obtain the number of wear particles and their projected area data; 8 ) Divide the number of wear particles by the total area of ​​the microtopography image to obtain the wear particle distribution density; 9) Calculate the average wear area based on the normal distribution of the projected area of ​​the wear particles. The present invention uses non-contact measurement to avoid measurement errors caused by stylus wear during the contact measurement process, extracts information on the number and projected area of ​​abrasive wear planes, and achieves quantitative characterization of different wear states of the grinding wheel.

Description

technical field [0001] The invention relates to the field of ultra-precision machining of large-diameter optical elements, in particular to a quantitative measurement and characterization method for abrasive wear of a micropowder diamond grinding wheel in the ultra-precision grinding process of optical elements. Background technique [0002] In large-scale high-precision optical systems such as high-power laser devices and astronomical telescopes, a large number of large-caliber high-precision optical components are used, including planar optical components, spherical optical components, and aspheric optical components. The high-efficiency and high-precision forming processing methods of large-diameter optical components mainly include milling and ultra-precision grinding forming, etc. The processing tools used are superhard micro-powder diamond grinding wheels with a particle size of less than 10 μm. During the processing, with the continuous accumulation of material remova...

AI Technical Summary

Problems solved by technology

For the micropowder diamond grinding wheel in the field of optical processing, it is necessary to quantitatively measure and characterize the abrasion and wear of ultrafine diamond particles, which is convenient for real-time evaluation of the processing ability of the grinding wheel. The cost of equipment is large, and the use environment needs to have high cleanliness and vibration isolation requirements, so it is impossible to realize the on-site detection of grinding wheel wear and tear

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