Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Having tool-opposing – work-engaging surface
Reexamination Certificate
2011-06-14
2011-06-14
Howell, Daniel W (Department: 3726)
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Having tool-opposing, work-engaging surface
C408S098000
Reexamination Certificate
active
07959385
ABSTRACT:
A printed circuit board machining apparatus includes a spindle that holds a tool for machining a printed circuit board and a pressure unit for pressing the printed circuit board to a table in machining the printed circuit board. The pressure unit includes a pressure foot movable up an down along the spindle, a rotating member having a plurality of pressure pieces through which a through hole for passing the tool is formed and provided so as to select one among the plurality of pressure pieces, a motor for moving the rotating member, cylinders and electromagnetic valves for moving the pressure foot up and down and a control section for controlling the cylinders and electromagnetic valves. The control section rotates the motor so as to select the pressure piece and controls the cylinders and the electromagnetic valves to change force for pressing the printed circuit board.
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Chinese Office Action issued Feb. 1, 2011 in corresponding Application No. 200810097733.6 . (with English translation).
Kado Hirofumi
Kamata Hiroyuki
Nagasawa Katsuhiro
Takahashi Shintaro
Hitachi via Mechanics, Ltd.
Howell Daniel W
Wenderoth , Lind & Ponack, L.L.P.
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