G - Physics – 05 – B
Patent
G - Physics
05
B
341/93
G05B 19/18 (2006.01) G05B 19/416 (2006.01)
Patent
CA 1331484
ABSTRACT OF THE DISCLOSURE In drilling control method and apparatus for making holes through a composite workpiece made of a plurality of materials having different machining properties, the workpiece is first drilled at a feed speed and a rotational speed of a drill which are selected. When this drilling of the workpiece is initiated, the amounts of the feeding speed and the rotational speed are detected by a feed speed sensor and a rotational speed sensor, respectively, and thrust force applied to the drill during the drilling is also detected by a thrust sensor. The detected feed speed and the rotational speed of the drill are compared in a comparison unit with optimum values which are adapted to the detected thrust force. When the detected values of the feed speed and the rotational speed of the drill coincide substantially with the optimum values, the drilling operation is performed, while when the detected values of the speed do not coincide with the optimum values, the feed speed and rotational speed of the drill are changed to the optimum values.
598028
Fuji Jukogyo Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
LandOfFree
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