Detection of holes in a workpiece |
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| 申请号 | US3618396D | 申请日 | 1970-06-03 | 公开(公告)号 | US3618396A | 公开(公告)日 | 1971-11-09 |
| 申请人 | VALCARTIER IND INC; | 发明人 | JULIEN DENIS; | ||||
| 摘要 | A METHOD AND APPARATUS FOR DETECTING THE PRESENCE OF A RELATIVELY SMALL HOLE IN A WORKPIECE, SUCH AS A BULLET CASING, BY PASSING A SLENDER DETECT PIN THROUGH THE HOLE, IF THE HOLE IS OBSTRUCTED OR NON-EXISTENT, THE PINS ABUTS THE WORKPIECE WHICH TERMINATES, PREMATURELY, ADVANCEMENT OF THE PIN. A SENSING DEVICE IS PROVIDED AND IS RESPONSIVE TO PREMATURE TERMINATION OF THE PIN ADVANCEMENT TO CONTROL A MACHINE PERFORMING VARIOUS OPERATIONS ON THE MEMBER. ABSENCE OF THE HOLE IN THE MEMBER IS EMPLOYED TO STOP THE MACHINE AND ENABLES THE DEFECTIVE WORKPIECE TO BE REMOVED. ADDITIONALLY, THE DEVICE INCLUDES A SAFETY FEATURE BY WHICH, IN THE EVENT THAT THE SLENDER, FRAGILE PIN BREAKS, THE BREAKAGE WILL BE SENSED ALSO TO STOP THE MACHINE. THIS ENABLES THE BROKEN PIN TO BE REPLACED AND INSURES THAT THE DAMAGED PIN WILL NOT PERMIT ANY DEFECTIVE WORKPIECE HAVING NO HOLE TO PASS THROUGH THE DETECTING STATION TO SUBSEQUENT OPERATING STATIONS IN THE MACHINE. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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