Machining apparatus with automatic restart function.

摘要

A laser cutting apparatus which allows cutting to be automatically restarted or redone without intervention from an operator once a cutting error or fault occurs. In a first embodiment, when the fault occurs the apparatus discontinues processing on the product corresponding to the fault. Thereafter, it moves to and restarts cutting at a starting position of the next product to be cut. In a second embodiment, the apparatus corrects a fault and continues cutting on the product corresponding to the fault by restarting cutting at the fault point. It determines whether a restart is possible at the point of the fault based on the type or definition of the fault. If a predetermined number of restarts are attempted at the point of fault without a successful restart, then the apparatus moves to a new start position. In another embodiment, the apparatus uses a profile sensor to prevent machine damage by sensing the position of the cutting head relative to the workpiece.