Patent ID: 6932358
Filing Date: 2005-08-23
Classification: B23B,Y10T

Abstract:
1. A quick-change tool apparatus for an endforming machine, comprising: A tool stem including a socket defined therein, the tool stem having a circumferential outer surface and at least one channel extending radially therethrough between the outer surface and the socket, the at least one channel having freely movably disposed therein a lock pin characterized by a length greater than the length of the at least one channel; a lock actuator rotatably disposed on the circumferential outer surface of the tool stem, the lock actuator including an inner surface opposing the outer surface of the tool stem, the inner surface having at least one cam recesses defined thereon; a tool holder having a shank receivable in the socket of the tool stem, the shank including at least one recess dimensioned to receive therein the at least one lock pin; the quick-change tool apparatus being characterized by an unlocked condition between the tool stem and the tool holder, wherein the lock actuator is rotatably positioned so that the at least one cam recess is aligned with the at least one channel such that the at least one lock pin is movable into the at least one channel and the at least one cam recess, and a locked condition between the tool stem and the tool holder, wherein the lock actuator is rotatably positioned so that the at least one cam recess is out of alignment with the at least one channel and the at least one lock pin is urged into the at least one recess on the shank of the tool holder; and wherein further the lock actuator includes an annular groove having a first stop, the cylindrical portion of the tool stem includes a second stop received within the annular groove, and a spring is positioned in the annular groove between the first and second stops, the spring and the first and second stops cooperating to bias the lock actuator to the locked condition between the tool stem and tool holder.