Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Magnetic or suction means
Patent
1985-11-12
1986-08-05
Weidenfeld, Gil
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Magnetic or suction means
408 6, 408 9, 408 11, 408 15, B23B 4724
Patent
active
046040064
ABSTRACT:
A drilling machine provided with an electromagnetic base comprises a first control system by which a warning device is actuated and/or a feed motor for automatically advancing an electric drill toward a workpiece is stopped when a load on the electric drill exceeds a prescribed first reference level while at work. A second control system further provided on the drilling machine is adapted to have the feed motor and/or the electric drill stopped when the load thereon is further increased and reaches a second reference level higher than the first reference level to assure high safety.
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Mikiya Toshio
Shoji Mitihiro
Howell Daniel W.
Nitto Kohki Co. Ltd.
Weidenfeld Gil
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