| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a puncher capable of correctly opening a hole in a prescribed position and a puncher head used in it. SOLUTION: In a puncher head which opens a larger objective hole than a prepared hole into a workpiece by using one of a punch 5 and a die 4 capable of being fitted to it as a fixed die and the other as a movable die, fixing the fixed die to a liquid pressure cylinder 2, passing an output shaft of the cylinder 2 through the prepared hole of the workpiece and attaching the movable die to its end, and reciprocating the movable die with respect to the fixed die, a guide 8 is prepared as a aligning mechanism which guides the center of the output shaft 3 to the center of the prepared hole.</p> |
