Title:
不規則な表面を成形するための磁気浮上型高速スピンドル
Document Type and Number:
Japanese Patent JP2007525333
Kind Code:
A
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.
Inventors:
Bischoff, Kenneth Earl
Z de Brick, William Jay
Z de Brick, William Jay
Application Number:
JP2007501026A
Publication Date:
September 06, 2007
Filing Date:
February 25, 2005
Export Citation:
Assignee:
Federal-Mogul Corporation
International Classes:
B23B19/02; B23B3/00; B23B5/36; B23Q1/48; B23Q5/10
Domestic Patent References:
| JPH10337603A | 1998-12-22 | |||
| JP2002018601A | 2002-01-22 | |||
| JPS6279902A | 1987-04-13 |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai