| 摘要 |
An automatic pneumatic drill is provided to stop the operation of the automatic pneumatic drill upon an emergency by using an emergency button. An automatic pneumatic drill comprises first and second pneumatic pressure supply pipes(A1,A2) for supplying pneumatic pressure to return a drill(60) to its initial position, a start button(20) for operating the drill, sixth and seventh pneumatic pressure supply pipes(A6,A7) for supplying pneumatic pressure to rotate and move down the drill, a rotor(50) for rotating the drill, and a cylinder(100) for moving down the drill. A stroke adjustment bolt(70) is connected to the cylinder to adjust a stroke of the drill. A push button(80) is provided to cut off air when the drill has been moved down by a predetermined distance. A pneumatic pressure supply pipe(10) is connected to the cylinder to move up the cylinder.
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