Stone working – Tools – Surface traversing
Reexamination Certificate
2007-04-03
2007-04-03
Wilson, Lee D. (Department: 3723)
Stone working
Tools
Surface traversing
C219S068000, C083S171000, C409S131000
Reexamination Certificate
active
11466715
ABSTRACT:
The present invention provides a method for extending diamond tool life in diamond machining of materials that chemically react with the diamond tool in which the surface electric potential of the workpiece is adjusted or tuned to be adequate to inhibit the chemical reaction between the diamond tool and the workpiece during the diamond machining operation. As the chemical reaction is inhibited, the chemical wear rate of the diamond tool is reduced and diamond tool life is extended. The surface electric potential of the workpiece can be adjusted by electrically charging the workpiece. In one embodiment, conduction charging is used to adjust the surface electric potential of the workpiece to inhibit the chemical reaction between the diamond tool and the workpiece. In another embodiment, induction charging is used to adjust the surface electric potential of the workpiece to inhibit the chemical reaction between the diamond tool and the workpiece.
REFERENCES:
patent: 3862391 (1975-01-01), Blomgren et al.
patent: 3873436 (1975-03-01), Inoue
patent: 3977126 (1976-08-01), Hohler et al.
patent: 4563114 (1986-01-01), Casstevens
patent: 4641007 (1987-02-01), Lach
patent: 5103701 (1992-04-01), Lundin
patent: 6637303 (2003-10-01), Moriwaki
patent: 6776563 (2004-08-01), Shamoto
Paul et al., “Chemical Aspects of Tool Wear in Single Point Diamond Turning,” Precision Engineering, vol. 18, No. 1, pp. 4-19 (1996).
Kohlscheen et al., “Tailoring of Diamond Machinable Coating Materials,” Precision Engineering, vol. 26, No. 2, pp. 175-182 (2002).
Shimada et al., “Suppression of Tool Wear in Diamond Turning of Copper Under Reduced Oxygen Atmosphere,” Annals of the CIRP, vol. 49, No. 1, pp. 21-24 (2000).
Shimada, et al., “Thermo-chemical Wear Mechanism of Diamond Tool in Machining of Ferrous Metals,” Annals of the CIRP, vol. 53, No. 1, pp. 57-60 (2004).
Evans, “Cryogenic Diamond Turning of Stainless Steel,” Annals of the CIRP, vol. 40, No. 1, pp. 571-575 (1991).
Moriwaki et al., “Ultraprecision Diamond Turning of Stainless Steel by Applying Ultrasonic Vibration,” Annals of the CIRP, vol. 40, No. 1, pp. 559-562 (1991).
Shamoto et al., “Ultraprecision Diamond Cutting of Hardened Steel by Applying Elliptical Virbration Cutting,” Annals of the CIRP, vol. 48, No. 1, pp. 441-444 (1999).
Suzuki et al., “Ultraprecision Micromachining of Hardened Steel by Applying Ultrasonic Elliptical Vibration Cutting,” Proceedings of 2003 International Symposium on Micromechatronics and Human Science, Nagoya, Japan, pp. 221-226 (2003).
Ojini Anthony
Wilson Lee D.
LandOfFree
Method for extending diamond tool life in diamond machining... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for extending diamond tool life in diamond machining..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for extending diamond tool life in diamond machining... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3765314