| 摘要 |
PURPOSE: A drilling machine for ice fishing is provided to simplify the work of drilling, and to prevent the generation of crack around a drilled hole. CONSTITUTION: The drilling machine for ice fishing is comprised of a base(10); a lifting screw shaft(25) coupled to the base; an auxiliary cutter(30,34) having a blade member spaced at regular distances; a circular main cutter(45) having a blade(48), fixed on the both ends of the auxiliary cutters to be concentrically disposed with the screw shaft; and a handle(55) coupled to the top end of the screw shaft for rotating the screw shaft. When the screw shaft is rotated by the handle with the base being disposed over an ice(2), the auxiliary cutters and the main cutter are rotated and lowered to break the ice.
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