| 摘要 |
<p>The present invention relates to a jig for mounting a drill on a diaphragm, comprising: a clamping unit mounted on a side of the diaphragm; a rotational unit rotationally coupled to a side of the clamping unit; an angle adjustment unit wherein an angle is adjusted in accordance with a variable length of an angle adjustment bolt which is clamped in a first fixed shaft rotationally fixated on the clamping unit and a second fixed shaft spaced from the first fixed shaft at a predetermined distance; and a drill mounting unit wherein an angle is adjusted by the angle adjustment unit and a drill device is mounted. Therefore, the drill mounting unit is made of a magnetic material for the drill device to be fixated in a stable state, adjusts a gap between the jig and the diaphragm by the adjusting bolt and also, and adjusts a position of the drill device by the adjusting bolt to form a drain hole.</p> |
