SAFETY LOCK FOR LATHE CHUCK KEY

摘要

A lathe or other rotating machine includes a chuck for holding a work piece or tool. The chuck is operated between engaging and disengaging positions by rotating a chuck key that has been inserted into a key receiving opening in the chuck. A chuck key docking station on the machine includes a sensor to sense the presence or absence of the chuck key at the docking station. The sensor is connected to prevent operation of the machine at speed if the chuck key is not sensed in the chuck key docking station.