TY - JOUR
T1 - Study on removal mechanism at the tool rotational center in bonnet polishing of glass
AU - Ihara, Motohiro
AU - Matsubara, Atsushi
AU - Beaucamp, Anthony
N1 - Funding Information:
This work was supported by the Grant-in-Aid for Scientific Research No. 17K14571 from the Japan Society for Promotion of Science, and the grant program for research and development from the OSG foundation. The authors acknowledge support from Zeeko Ltd. for loaning the polishing system and measurement equipment, as well as Kimura Industry and Nano Control Co. for loaning the ultra-precision equipment and sensors used in single particle experiments. Finally, the invaluable expertize of Kyoto University Professor Tsuchiya as well as Kimura Industry employees Kominami san and Nishikawa san is acknowledged, for setting up and measuring single particle experiments. The theoretical advice provided by Kyoto University Assistant Professor Wule Zhu is also recognized.
Funding Information:
This work was supported by the Grant-in-Aid for Scientific Research No. 17K14571 from the Japan Society for Promotion of Science , and the grant program for research and development from the OSG foundation . The authors acknowledge support from Zeeko Ltd. for loaning the polishing system and measurement equipment, as well as Kimura Industry and Nano Control Co. for loaning the ultra-precision equipment and sensors used in single particle experiments. Finally, the invaluable expertize of Kyoto University Professor Tsuchiya as well as Kimura Industry employees Kominami san and Nishikawa san is acknowledged, for setting up and measuring single particle experiments. The theoretical advice provided by Kyoto University Assistant Professor Wule Zhu is also recognized.
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/8/15
Y1 - 2020/8/15
N2 - Preston's law is a widely used equation that expresses time-dependency of material removal in polishing process. In this research, it is experimentally found that Preston's law does not hold at the tool rotational center in glass polishing. Material removal observations point to a mechanical phenomenon accelerated by chemical reaction. To identify the underlying phenomenon, experiments are conducted that isolate the contribution from each constituent factor in Preston's law. By observing the motion of loose-abrasive particles during polishing, it is found that they travel as expected on concentric trajectories around the tool rotational center. By measuring the pressure distribution in static situation as well as the contact force during polishing, it can be concluded that no hydrodynamic increase in pressure occurs at the tool rotational center. Finally, experiments are performed to investigate the relationship between distance from tool rotational center and removal depth by a single abrasive particle. The depth of removal is observed to reach a maximum value at the tool rotational center in all polishing conditions tested, from which a modified expression of Preston's law is derived. Finally, hypotheses based on fracture and material mechanics are proposed to explain abrasion mode transitions in single particle abrasion.
AB - Preston's law is a widely used equation that expresses time-dependency of material removal in polishing process. In this research, it is experimentally found that Preston's law does not hold at the tool rotational center in glass polishing. Material removal observations point to a mechanical phenomenon accelerated by chemical reaction. To identify the underlying phenomenon, experiments are conducted that isolate the contribution from each constituent factor in Preston's law. By observing the motion of loose-abrasive particles during polishing, it is found that they travel as expected on concentric trajectories around the tool rotational center. By measuring the pressure distribution in static situation as well as the contact force during polishing, it can be concluded that no hydrodynamic increase in pressure occurs at the tool rotational center. Finally, experiments are performed to investigate the relationship between distance from tool rotational center and removal depth by a single abrasive particle. The depth of removal is observed to reach a maximum value at the tool rotational center in all polishing conditions tested, from which a modified expression of Preston's law is derived. Finally, hypotheses based on fracture and material mechanics are proposed to explain abrasion mode transitions in single particle abrasion.
KW - Abrasive machining
KW - Material removal modes
KW - Polishing
KW - Preston law
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U2 - 10.1016/j.wear.2020.203321
DO - 10.1016/j.wear.2020.203321
M3 - Article
AN - SCOPUS:85084649632
SN - 0043-1648
VL - 454-455
JO - Wear
JF - Wear
M1 - 203321
ER -