Magnetorheological polishing devices and methods

Abrading – Abrading process – Tumbling

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451 36, 451 32, 451 74, 451104, 451106, 451113, 451114, B24B 31112

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055779484

ABSTRACT:
A method of polishing an object is disclosed. In one embodiment, the method comprises the steps of creating a polishing zone within a magnetorheological fluid; determining the characteristics of the contact between the object and the polishing zone necessary to polish the object; controlling the consistency of the fluid in the polishing zone; bringing the object into contact with the polishing zone of the fluid; and moving at least one of said object and said fluid with respect to the other. Also disclosed is a polishing device. In one embodiment, the device comprises a magnetorheological fluid, a means for inducing a magnetic field, and a means for displacing the object to be polished or the means for inducing a magnetic field relative to one another.

REFERENCES:
patent: Re32573 (1988-01-01), Furumara et al.
patent: 1843198 (1932-02-01), Berguerand
patent: 1928036 (1933-09-01), Soderberg
patent: 2020714 (1935-11-01), Wulff
patent: 2670749 (1954-03-01), Gerner
patent: 2735231 (1956-02-01), Simjian
patent: 2735232 (1956-02-01), Simjian
patent: 2736409 (1956-02-01), Logan
patent: 2751352 (1956-06-01), Bondi
patent: 2787854 (1957-04-01), Simjian
patent: 2883809 (1959-04-01), Simjian
patent: 2923100 (1960-02-01), Simjian
patent: 2994314 (1961-08-01), Wayland et al.
patent: 3395720 (1968-08-01), Brooks
patent: 3423880 (1969-01-01), Hershler
patent: 3500591 (1970-03-01), Gawronski et al.
patent: 3587613 (1971-06-01), Mark et al.
patent: 3665749 (1972-05-01), Brenner
patent: 3848363 (1974-11-01), Lovness et al.
patent: 3897350 (1975-07-01), Heiba et al.
patent: 3915006 (1975-10-01), Ayres
patent: 3917538 (1975-11-01), Rosenweig
patent: 4057939 (1977-11-01), Basi
patent: 4175930 (1979-11-01), Sakulevich et al.
patent: 4186528 (1980-02-01), Yascheritsyn et al.
patent: 4200003 (1980-04-01), Miller
patent: 4306386 (1981-12-01), Sakulevich et al.
patent: 4356098 (1982-10-01), Chagnon
patent: 4430239 (1984-02-01), Wyman
patent: 4599826 (1986-07-01), Podoprigora
patent: 4632315 (1986-12-01), Watanabe et al.
patent: 4632316 (1986-12-01), Watanabe et al.
patent: 4691774 (1987-09-01), Nelson
patent: 4730418 (1988-03-01), Sugawara et al.
patent: 4772407 (1988-09-01), Carlson
patent: 4802534 (1989-02-01), Larson et al.
patent: 4821466 (1989-04-01), Kato et al.
patent: 4839074 (1989-06-01), Rossi
patent: 4920929 (1990-05-01), Bishop
patent: 4956944 (1990-09-01), Ando et al.
patent: 4974368 (1990-12-01), Miyamoto et al.
patent: 4986689 (1991-01-01), Drutchas
patent: 4992190 (1991-02-01), Shtarkman
patent: 4999954 (1991-03-01), Miyamoto et al.
patent: 5032307 (1991-07-01), Carlson
patent: 5044128 (1991-09-01), Nakano
patent: 5071541 (1991-12-01), Thompson
patent: 5076026 (1991-12-01), Mizuguchi et al.
patent: 5147573 (1992-09-01), Chagnon
patent: 5167850 (1992-12-01), Shtarkman
patent: 5449313 (1995-09-01), Kordonsky et al.
S. A. Demchuk, V. I. Kordonsky, Z. P. Shulman, "Magnetortheological Characteristics of Ferromagnetic Suspensions", Magn. Hydrodynamics (USSR), No. 2, pp. 35-38 (1977).
E. A. Zal'tsgendler, A. V. Kolomentsev, V. I. Kordonskii et al., "Magnetortheological Converters", Magn. Hydrodynamics, No. 4, pp. 105-110 (USSR 1985).
V. I. Kordonsky, Z. P. Shulman, S. R. Gorodkin et al., "Physical Properties of Magnetizable Structure--Reversible Media," Journal of Magnetism and Magnetic Materials 85, pp. 114-120 (1990).
"Magnetic Oil", Life Magazine, Sep. 20, 1948.
"Magnetorheological Effect and Control of Transfer Processes", Advances in Mechanics vol. 12, No. 4 (1989), pp. 1-42.
T. Lucas, "Intelligent Fluids Come Out Of The Laboratories", Technologies (Jan. 1990).
T. Kurobe et al., "Magnetic Field-Assisted Fine Finishing", Precision Engineering, vol. 6, No. 3, pp. 119-124 (1984).
T. Kurobe et al., "Magnetic Field-Assisted Lapping", Bull. Jap. Soc. Precision Eng'g, vol. 20, No. 1, pp. 49-51 (1986).
H. Suzuki et al., "Magnetic field-assisted polishing-application to a curved surface", Precision Engineering 4, 197-202 (Oct. 1989).
Umehara et al., "Magnetic fluid grinding of ceramic rollers", Electromagnetic Forces and Applications, pp. 139-142 (1992).
Umehara et al., "Magnetic fluid grinding of ceramic flat surfaces", Electromagnetic Forces and Applications, pp. 143-146 (1992).
Kashevskii, Kordonsky, Prokhorov, Demchuk and Gorodkin, "Relaxation of Viscous Stresses in Magnetorheological Suspensions"Magnitnaya Gidrodinamika, No. 2, pp. 11-19 (Apr.-Jun. 1990).
Watanabe, J. et al., "High Precision Polishing of Semiconductor Materials Using Hydrodynamic Principle," IRP Annual, vol. 30 (1981), pp. 91-95.
Gormley, J. et al., "Hydroplane Polishing of semiconductor crystals," Rev. Sci. Instrum., (Aug. 1981), pp. 1256-1259.
Saito, Y. et al., "Float Polishing Using Magnetic Fluid with Abrasive Grains," Proceedings of the 6th International Conference on Production Engineering Osaka (1987), pp. 335-340.
Cook, L., "Chemical Processes In Glass Polishing," Journal of Non-Crystalline Solids, vol. 120 (1990), pp. 152-171.
Wada, S. et al., "Behavior of a Bingham Solid in Hydrodynamic Lubrication," Bulletin of the JSME, vol. 16, No. 92, Feb., 1973, pp. 422-431.
Saffman, P., "The lift on a small sphere in a slow shear flow,"J. Fluid Mech., vol. 22, part 2, (1965), pp. 385-400.
Milne, A., "A Theory of Rheodynamic Lubrication," pp. 96-101. (1954).
Mori, Y. et al., "Elastic Emission Machining," Journal of Japan Society Of Precision Engineering 51,6 (1985), pp. 1187-1194.
Mori, Y. et al., "Elastic Emission Machining," Precision Engineering, vol. 9 (Jul. 1987), pp. 123-128.
Carlson, J. et al., "Electrorheological Fluids,"Proceedings of the Second Int'l Conference on ER Fluids (1989) pp. 437-444.
Sasaki, T. et al., "Theory of Grease Lubrication of Cylindrical Roller Bearing," Bulletin of JSME, vol. 3, No. 10 (1960), pp. 212-219.
Mori, Y., et al., "Evaluation of elastic emission machined surfaces by scanning tunneling microscopy," J. Vac. Sci. Technol. A8(1) (Jan./Feb. 1990), pp. 621-624.
Ohtani, K. et al., "Plane Fabrication of Bi.sub.12 SiO.sub.20 Single Crystal Plate by Elastic Emission Machining," Bull., Japan Soc. of Prec. Engg., vol. 24 No. 3 (Sep. 1990), pp. 225-226.
Tichy, J., "Hydrodynamic lubrication theory for the Bingham plastic flow model," J. Rheology, vol. No. 35(4) (May 1991), pp. 476-497.
Weiss, K. et al., "Viscoelastic Properties of Magneto-and Electro-Rheological Fluids," pp. 1300-1307.
Mori, Y. et al., "Elastic Emission Machining as Evaluated by Atomistic Technolgies," pp. 58-63. Proceeding of the 6th Int'l Conference on Production Engineering (1987).
Mori, Y. et al., "Mechanism of atomic removal in elastic emission machining ," Precision Engineering, vol. 10, No. 1, (Jan. 1988), pp. 24-28.
Cook. L., "Chemical Processes in Glass Polishing," Journal of Non-Crystalline Solids, vol. 120 (1990), pp. 152-171.
Encyclopedia of Chemical Technology, Fourth Edition (1993), vol. 7, pp. 566-568.
"Inhibitor (chemistry)," McGraw Hill Encyclopedia of Science & Technology, 6th Edition, pp. 169-171 (1987).
Doughty, G. et al., "Microcomputer-controlled polishing machine for very smooth and deep aspherical surfaces," Applied Optics, vol. 26, No. 12 (Jun. 1987), pp. 2421-2426.
Bajuk, D., "Computer Controlled Generation of Rotationally Symmetric Aspheric Surfaces," Optical Engineering, vol. 15, No. 5, (Sep.-Oct. 1976), pp. 401-405.
Ando, M. et al., "Super-smooth surface polishing on aspherical optics," SPIE, vol. 1720 (1992), pp. 22-33.
Ives, N. et al., "Noncontact laminar-flow polishing for GaAs," Rev. Sci. Instrum., vol. 59, No. 1 (Jan. 1988), pp. 172-175.
Hamaguchi, T., "Hydrostatic float polishing for wafer preparation," Rev. Sci. Instrum., vol. 55 No. 11 (nov. 1984), pp. 1867-1868.
Tichy, J., "Hydrodynamic lubrication theory for the Bingham plastic flow model," J. Rheology, vol. 35, No. 4 (May 1991), pp. 476-497.
Biswas, S. et al., "Elastohydrodynamic Lubrication of Spherical Surfaces of Low Elastic Modulus," Journal of Lubrication Technology, (Oct. 1976), pp. 524-529.
Mori, Y., "Numerically Controlled Elastic Emission Machining Consideration of Machining Process by Motion Analysis of Powder Particles in Fluid," Journ

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