Optimization and experimental research on process parameters of the softness consolidation abrasive particles
SCA (softness consolidation abrasive) finishing is a new type of machining method. The dilatancy effect of abrasive particles during processing causes the local accumulation of abrasives particles and leads to scratches on the surface of the workpiece, which in the meantime decreases finishing efficiency. So, microscopic contact mechanic model of abrasive particles is established to analyze the force chain transfer phenomenon. A microscope constitutive model of abrasive particles is established to reflect the microscopic force-displacement relationship between abrasive particles. The force chains net evolution of the abrasive particles with different porosity and the surface stress distribution of workpieces are simulated by PFC3D.The results show that when the porosity exceeds 44%, the internal force chain transmission path of the abrasive particles disappears; the surface stress of workpieces exhibits a periodic distribution. As the porosity increases, the stress amplitude decreases. Finally, the test platform is set up and the laws of porosity and abrasive’s size on surface roughness of workpieces can be concluded after a series of polishing experiments by pneumatic wheels with softness consolidation abrasive. The experiments results show that when the abrasive’s size is 800 and the porosity is 24%, the surface roughness of workpieces is small, and the surface average roughness of workpieces can decrease from 313.744 to 67.11 nm.
KeywordsPneumatic wheel Softness consolidation abrasives Dilatancy effect Scratches controlling Constitutive model Roughness
Unable to display preview. Download preview PDF.
The authors acknowledge the financial support provided by the National Natural Science Foundation of China (51875526) and Zhejiang Provincial Natural Science Foundation of China (LY18E050023). We also acknowledge the financial support of the Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology Ministry of Education in Zhejiang University of Technology.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- 3.Wang Z (2008) Research on key technologies of subsurface damage detection and control in optical materials processing [D]. National University of Defense Technology, HunanGoogle Scholar
- 4.Cai L, Tian SX (1987) Optical component processing technology [M]. Huazhong Institute of Technology Press, WuhanGoogle Scholar
- 6.Zhu CR. (2016) Research on bonnet polishing process based on five axis hybrid machine [D]. Heilongjiang: Harbin Institute of TechnologyGoogle Scholar
- 10.Hang W, Zhou LB, Shimizu J, Yuan JL. A robust procedure of data analysis for micro/nano indentation, Precis Eng, Vol. 37, Iss.2, Apr. 2013, pp.408-414, SCI indexGoogle Scholar
- 11.Song JF, Yao YX, Dong YG, Dong B (2017) Prediction of surface quality considering the influence of the curvature radius for polishing of a free-form surface based on local shapes [J]. Int J Adv Manuf Technol 95(1):1–15Google Scholar
- 12.Huai WB, Tang H, Shi YY, Lin XJ (2016) Prediction of surface roughness ratio of polishing blade of abrasive cloth wheel and optimization of processing parameters [J]. Int J Adv Manuf Technol 90(1–4):1–10Google Scholar
- 13.Zeng X, Pan Y, Ji SM (2017) Characteristic of AFRP pneumatic wheel [J]. Acta Materiae Compositae Sinica 34(10):2321–2329Google Scholar
- 14.Hang W, Zhou LB, Zhang KH, Shimizu J, Yuan JL; Study on grinding of LiTaO3wafer using effective cooling and electrolyte solution , Precis Eng, Vol. 44, Apr. 2016, pp.62–69, SCI indexGoogle Scholar
- 16.Zheng YR, Shen ZJ, Gong XN (2003) Principle of rock mechanics [M]. China Building Industry Press, BeijingGoogle Scholar
- 23.Chi JM, Zhao CG, Li XJ (2009) Study on the mechanism of sand dilatancy [J]. J Civ Eng 42(3):99–104Google Scholar
- 25.Li XS, Y F Dafalias. Dilatancy for cohesionless soils [J]. Geotechnique, 2000, 50(4): 449–460Google Scholar
- 26.Shen ZJ (2000) Theoretical soil mechanics [M]. China Water Conservancy and Hydropower Press, BeijingGoogle Scholar