Gear cutting – milling – or planing – Milling – Cutter spindle or spindle support
Reexamination Certificate
2007-09-04
2007-09-04
Carter, Monica (Department: 3722)
Gear cutting, milling, or planing
Milling
Cutter spindle or spindle support
82, C408S147000, C310S090500
Reexamination Certificate
active
11065618
ABSTRACT:
A magnetically levitated high-speed spindle assembly (20) is provided for forming non-circular holes (22) in workpieces (24) or non-circular surfaces on pins. The non-circular holes (22) can be formed with dimensionally varying axial trajectories at high speeds and with great accuracy. This is accomplished by supporting a rotating spindle (26) between first (58) and second (60) magnetic bearing clusters and independently controlling these bearing clusters (58, 60) to move a shaping tool (32) at the end of the spindle (26) in a predetermined orbital path (B). A multiple input-multiple output control strategy is used to control spindle (26) movements in the X and Y axes. The tilt angle between the cutting edge (34) of the shaping tool (32) and the orbital path (B) is maintained perpendicular under this multiple input-multiple output control of the magnetic bearing clusters (58, 60) to further improve shaping precision and spindle (26) stability during high-speed operations.
REFERENCES:
patent: 4180946 (1980-01-01), Heijkenskjold et al.
patent: 4250775 (1981-02-01), Jerue et al.
patent: 4612833 (1986-09-01), Slee
patent: 5682071 (1997-10-01), Buhler et al.
patent: 5729066 (1998-03-01), Soong et al.
patent: 5739607 (1998-04-01), Wood, III
patent: 5783887 (1998-07-01), Ueyama et al.
patent: 5828151 (1998-10-01), Bustamante et al.
patent: 5879113 (1999-03-01), Ueyama et al.
patent: 6267876 (2001-07-01), Allaire et al.
patent: 6328509 (2001-12-01), Lind
patent: 6429561 (2002-08-01), Davis et al.
patent: 6508614 (2003-01-01), Ozaki et al.
patent: 7057319 (2006-06-01), Yamada
patent: 2003/0001445 (2003-01-01), Paden et al.
patent: 2003/0173845 (2003-09-01), Allaire et al.
patent: 678090 (1991-07-01), None
patent: 689808 (1999-11-01), None
patent: 3937687 (1990-05-01), None
patent: 19518539 (1995-11-01), None
patent: 0311122 (1989-04-01), None
patent: 1235599 (1992-09-01), None
patent: 54008248 (1979-01-01), None
patent: 61152304 (1986-07-01), None
patent: 7314274 (1995-12-01), None
“Dynamics and Control of Magnetically Levitated High-Speed Rigid Rotor to Produce N-Waved Orbits” Bischof, Kenneth R.
Bischof Kenneth R.
Zdeblick William J.
Addisu Sara
Carter Monica
Dickinson Wright PLLC
Federal Mogul World Wide, Inc
Stearns Robert L.
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