Large aperture lenses which are used for single-lens reflex cameras and astronomical telescopes are manufactured by both ultra-precision grinding to make precise shape and polishing to improve surface quality. However, prolonged polishing deteriorates lens shape accuracy and decreases productivity. In order to reduce polishing amount and obtain finer surface without cracks before polishing, it is required to develop a highly-efficient ductilemode grinding technology. In this study, a novel ultra-precision grinding method assisted by CeO2chemical reaction is proposed and its performance is experimentally evaluated. The results show that crackless surface can be successfully obtained over the entire surface at three times higher tool feed rate, compared with conventional grinding without CeO2assistance.
|出版ステータス||Published - 2018|
|イベント||21st International Symposium on Advances in Abrasive Technology, ISAAT 2018 - Toronto, Canada|
継続期間: 2018 10月 14 → 2018 10月 16
|Conference||21st International Symposium on Advances in Abrasive Technology, ISAAT 2018|
|Period||18/10/14 → 18/10/16|
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