Abstract
In engineering applications, many surfaces are manufactured with some specific functional properties such as bearing, sealing, and lubricant retention capabilities. In order to figure out the characteristics of surfaces ground by ultrasonic-assisted grinding, surface bearing index Sbi and core fluid retention index Sci were adopted in this study to investigate the effects of grinding velocity and ultrasonic vibration amplitude on the bearing and fluid retention properties of ground surfaces. Results indicated that the surface bearing index Sbi and core fluid retention index Sci of ultrasonic-assisted grinding (UAG) were larger than those of common grinding (CG) under the same condition. The surface bearing index Sbi decreased with the increase of grinding velocity and increased with the increase of the ultrasonic vibration amplitude, while the core fluid retention index Sci increased with both the grinding velocity and ultrasonic vibration amplitude. Ultrasonic-assisted grinding mechanisms were further explored to interpret these trends. The oscillation in the axial direction generates more overlaps, resulting in relatively flat-top surface. The oscillation in the radial direction generates more intermittent concave, thereby increasing the space for fluid.
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Funding
The authors gratefully thank the support of the National Natural Science Foundation of China (NSFC) through Grant Nos. 51535012, 51605160, and U1604255, the support of the Key research and development project of Hunan province through Grant No. 2016JC2001, and the open Research Fund of Key Laboratory of High Performance Complex Manufacturing, Central South University (No. Kfkt2016-8).
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Chen, H., Tang, J., Shao, W. et al. An investigation on surface functional parameters in ultrasonic-assisted grinding of soft steel. Int J Adv Manuf Technol 97, 2697–2702 (2018). https://doi.org/10.1007/s00170-018-2164-x
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DOI: https://doi.org/10.1007/s00170-018-2164-x