Gear cutting – milling – or planing – Milling – Including means to infeed rotary cutter toward work
Reexamination Certificate
2011-03-22
2011-03-22
Cadugan, Erica E (Department: 3726)
Gear cutting, milling, or planing
Milling
Including means to infeed rotary cutter toward work
C409S216000
Reexamination Certificate
active
07909550
ABSTRACT:
A swivel spindle head with gear device driven by multiple torque motors is disclosed, which comprises: a tool spindle, having a first shaft and a second shaft being radially disposed at two opposite sides of the tool spindle while sharing a common axial line; a plurality of torque motors, radially disposed at a side of the tool spindle; and a reduction gear set, radially disposed at a side of the tool spindle opposite to the plural torque motors, composed of a plurality of driving gears and a driven gear; wherein the amount of the plural driving gears is the same as that of the plural torque motors while enabling each of the plural driving gears to connect with a rotor shaft of its corresponding torque motor, and the same time, connecting the driven gear on the second shaft of the tool spindle.
REFERENCES:
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patent: 5385436 (1995-01-01), Corsi
patent: 5538375 (1996-07-01), Kwapisz
patent: 5584621 (1996-12-01), Bertsche et al.
patent: 6746188 (2004-06-01), Watanabe
patent: 7470095 (2008-12-01), Brunemann
patent: 2007/0059116 (2007-03-01), Brunemann
English abstract and clipped drawing for TW 200924881-A, which '881 was published on Jun. 16, 2009.
Chang En-Sheng
Chung Shih-Yen
Hsu Chin-Mou
Lin Ching-Yuan
Cadugan Erica E
Industrial Technology Research Institute
Morris Manning & Martin LLP
Tingkang Xia Tim
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