| 摘要 |
<p>The present invention relates to a clamping device. According to an embodiment of the present invention, the clamping device clamps a clamping target having a full stud and a hollow cutting passage. The clamping device comprises: a collet inserted with the full stud of the clamping target; a piston clamp which moves the collet back and forth to clamp or unclamp the full stud of the clamping target and which has a hollow clamp passage and an uneven collar accepting groove inside the hollow clamp passage; a collar of which one side is inserted into the collar accepting groove of the piston clamp, of which the other side faces the full stud of the clamping target, and which has a hollow collar passage connected to the hollow clamp passage; and a packing ring joined to the other side of the collar to come in contact with the full stud when the collet clamps the full stud of the clamping target in order to connect the hollow collar passage of the collar to the hollow cutting passage of the clamping target.</p> |
