| CHI Yu-lun,GU Jia-jian.Study on the Optimization of Dressing Process of DiamondWheel for Precision Bearing Grinding[J],50(3):366-375 |
| Study on the Optimization of Dressing Process of DiamondWheel for Precision Bearing Grinding |
| Received:May 04, 2020 Revised:July 29, 2020 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2021.03.040 |
| KeyWord:precision bearing grinding diamond wheel dressing frequency response function dressing speed ratio interference angle process optimization |
| Author | Institution |
| CHI Yu-lun |
University of Shanghai for Science and Technology, Shanghai , China |
| GU Jia-jian |
University of Shanghai for Science and Technology, Shanghai , China |
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| Abstract: |
| Through the study on the optimization of the surface dressing process of the bearing ring, high-quality and efficient grinding of the bearing ring surface is achieved. Based on the diamond wheel dressing principle and mechanical principle, this paper establishes a simplified model of the dressing process system to obtain the natural frequency of the system and determine the optimal speed of the spindle according to the frequency response function curve; builds the trajectory equation of the grinding wheel and the wheel to obtain the radius of curvature, and the dressing speed ratio that makes the surface roughness of the grinding wheel lower according to the radius of curvature; then introduces a new physical quantity interference angle, determines an optimal interference angle based on experience, and substitutes the dressing speed ratio to obtain the final feed rate of the wheel; finally, optimizes the entire dressing process by the size of the grinding force obtained indirectly, and reselects the spindle speed if the grinding force is too large. According to the optimization results obtained by this method, when the grinding wheel speed is 23 994 r/min, the wheel speed is 5473 r/min, the dressing feed speed is 1.77 mm/min, and the grinding force is 37.2 N, the bearing ring surface will be in higher quality. Compared with the groove shape of the bearing ring before and after optimization, it is changed from the unqualified before the optimization to the qualified after the optimization, so there is a significant improvement. The dressing parameters are determined by multiple methods, and finally optimized by grinding force. And according to the problems presented on the surface of the processed products, the corresponding parameters can be found, and then optimized individually, which provides a scientific and effective method for the enterprise to optimize the surface quality of the bearing ring. |
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