Abrading – Machine – Rotary tool
Patent
1993-10-20
1995-10-31
Lavinder, Jack W.
Abrading
Machine
Rotary tool
451 11, 310 905, B24B 4500
Patent
active
054624703
ABSTRACT:
A grinding wheel spindle assembly comprises a first casing and a second casing spaced apart from and facing the first casing. A shaft has one end fixed to the first casing and another opposite end fixed to the second casing. A hollow, cylindrical-shaped rotor is rotatably disposed over the shaft between the first and second casings for rotation relative to the shaft. A flange having opposite side surfaces is connected to an outer circumference of the rotor for rotation therewith. A grindstone is connected to an outer circumference of the flange for rotation therewith. A radial magnetic bearing magnetically supports the rotor in its radial direction, and an axial magnetic bearing magnetically supports the rotor in its axial direction. At least one driving motor is provided for rotating the rotor about a center axis thereof.
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patent: 3890019 (1975-06-01), Boden et al.
patent: 4095150 (1978-06-01), Senckel
patent: 4180946 (1980-01-01), Heijkerskjold
patent: 4568862 (1986-02-01), Tassinario
patent: 4605873 (1986-08-01), Hahn
patent: 5142177 (1992-08-01), Higuchi et al.
Patent Abstracts of Japan, vol. 10, No. 384 (E-466) (2441) 23 Dec. 1986.
Philips Technical Review, vol. 41, No. 11, 1989, Eindhoven, Netherland, pp. 348-361, E. M. H. Kamerbeek, "Magnetic Bearings".
Oda Yoshimasa
Ota Masato
Lavinder Jack W.
Seiko Seiki Kabushiki Kaisha
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