| 摘要 |
PURPOSE: A hole drilling device of long wood is provided to drill a hole on long wood by discharging chips to the outside during the rotation of a bit. CONSTITUTION: A hole drilling device of long wood comprises a wood fixing unit(200), a transport unit(300), a hole drilling unit(400), a bit protection element(600), a chip collection cover, and one or more guide members(800). The wood fixing unit is installed on the upper surface of a frame(100). The transport unit moves on the upper surface of the frame along the longitudinal direction. The hole drilling unit drills hole on the long wood through a bit(500). A rotary shaft(420) is rotated through the bearing of the bit protection element. The chip collection cover is installed on one side of the bit protection element.
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