レース目残り
English translation: lathe marks
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| 15:41 Dec 27, 2009 |
| Japanese to English translations [PRO] Tech/Engineering - Manufacturing | |||||||
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|  Selected response from: lingualabo Italy Local time: 05:16 | ||||||
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| Summary of answers provided | ||||
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| 5 | lathe marks |
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| 3 +1 | lathe marks |
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| 1 | race mark |
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| Discussion entries: 3 | |
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Answers
8 hrs confidence: 
race mark Explanation: http://www.coopervision.jp/professional/material/pdf/DrSalmo... |
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9 hrs confidence:
lathe marks Explanation: Lathes are used to cut and grind metals, etc. - lathes are also used for contact lenses. Here's a website talking about lathe marks on contact lenses. http://blogs.howstuffworks.com/2009/02/18/how-do-they-make-l... c) These lathes vut the front and back surface curves along with any peripheral curves, plus the edge shape d) Lenses are then polished to remove the lathe marks and improve the optics |
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9 hrs confidence: peer agreement (net): +1
peer agreement (net): +1lathe marks Explanation: http://en.wikipedia.org/wiki/Contact_lens#Manufacturing_of_c... "Lathe turned - A lathe turned contact lens is cut and polished on a CNC lathe.[31] Lathe Turning is #101 of Mass Reducing Operations.[32] The lens starts out as a cylindrical disk held in the jaws of the lathe. The lathe is equipped with an industrial grade diamond as the cutting tool. The CNC Lathe turns at nearly 6000 RPM (revolutions per minute) as the cutter removes the desired amount of material from the inside of the lens. The concave (inner) surface of the lens is then polished with some fine abrasive paste, oil, and a small polyester cottonball turned at high speeds. In order to hold the delicate lens in reverse manner, wax is used as an adhesive. The convex (outer) surface of the lens is thus cut and polished by the same process." http://www.clsa.info/PDF/1Q_07_CUP120.pdf 7ページ参照 "To inspect the lens, hold the concave side against the scale and look for lathe marks, scratches and edge chips." |
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