| 摘要 |
PURPOSE: A portable drilling machine for a glass is provided to fix stably the drilling machine at a glass surface by installing a manual absorber at a leg and to enhance a cooling effect of a core drill by constituting to supply cooling water to an inner side of the core drill through a drill chuck. CONSTITUTION: A portable drilling machine for a glass comprises a leg(10), a shaft(20) forming a rack gear(21) up righted at the leg, a motor(30) mounted to the shaft, a drilling handle(40) to fit a spur gear(41) to the rack gear(21) to lift the motor and a drill chuck(50) for fixing the core drill. A manual absorber(100) is installed to both side of the leg(10) respectively in order to attach and detach the drilling machine at topside of the glass. A water supplying valve(110) is installed at a housing of the motor for inserting and mounting an upper portion of the drill chuck. A cooling water passage(51) is formed at a main surface of the drill chuck, and cooling water is supplied to an inside of the core drill. An upper end of a bellows cover(120) is fixed to the motor, and a lower end thereof is fixed to the leg in order to contain the shaft.
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