| 摘要 |
PURPOSE:To obtain an automatic opening device capable of making opening forming in a ceiling easily and rapidly and reducing labor for cleaning, etc., after completing the forming operation. CONSTITUTION:An opening forming portion S of a ceiling T is held by a holding member 32, a rotating cylinder 20 and first and second arms 25 and 26 are rotated and telescoped to cut the ceiling at the opening forming portion S with a rotating drill 27 provided at the tip of the second arm 26. The one end of a suction hose 40 the other end of which is connected to an aspirator 11 is connected to the tip of the second arm 26 and faced toward the ceiling T. Then cutting chips produced when cutting the ceiling T with the rotating drill 27 are sucked, and multiple TV cameras 24 and 33 for sensing at least two reference marks engraved in the opening forming portion S of the ceiling T and a monitor TV 17a for displaying the reference position of the reference mark duplicatedly on the image focused by the TV cameras 24 and 33 are provided. |
