公开(公告)号：US3747142A

公开(公告)日：1973-07-24

申请号：US3747142D

申请日：1972-04-10

Applicant: KEYSTONE CONSOLIDATED IND INC

Inventor： ARBOGAST R ,  NEUROTH R ,  HAIGHT J

IPC: B21J13/00 ,  B23B47/24 ,  B23B49/00 ,  B21H3/00

CPC classification number: B23B49/001 ,  B21J13/00 ,  Y10T83/088

Abstract: A broken tool detector utilized to check for the presence of any protrusion on the face of a tool, such as the second blow punch on a two blow header or similar machine, where the detector includes a probe which travels with the ram and is mounted on the ram on which the punches are mounted. The probe is positioned so that the second punch passes it as the punch is moved between its inactive and active punching positions. The probe is isolated electrically from the machine and wired to a low voltage circuit connected to the drive motor starter circuit by isolated detector relay contacts. Each time the probe contacts the end of the punch, a capacitor charge is restored which supplies energy to maintain the detector relay contacts. If the punch is broken or worn and fails to make contact with the probe, the capacitor discharges and the detector relay drops out, stopping the machine.

Abstract translation: 用于检查工具表面上是否存在任何突起的破损的工具检测器，例如在二吹头或类似机器上的第二冲压冲头，其中检测器包括与冲头一起行进并安装在其上的探针 冲压器安装在其上的冲头。 探针被定位成使得当冲头在其非活动和主动冲压位置之间移动时，第二冲头通过它。 探头与机器电气隔离，并通过隔离式检测继电器触点连接到与驱动电机启动器电路相连的低压电路。 每次探头接触冲头的末端时，恢复电容器充电，从而提供能量以维持检测器继电器触点。 如果冲头破损或磨损，不能与探头接触，则电容器放电，检测器继电器掉电，停机。