ELECTRICAL TRACING CONTROL SYSTEM FOR PROCESSING MACHINES IN PARTICULAR FLAME CUTTING MACHINES

摘要

An electrical tracing control system for processing machines, in particular flame cutting machines, with a tracing unit which traces an edge photo-electrically and in which at least one photo-transistor is arranged, the output signal of which can be passed to a tracing motor in order to adjust the photo-transistor in the direction of the tangent to the edge, whereby the tracing motor is connected with a resolved for the control of two-co-ordinate motors, a motor pole reversal stage and a system for pre-selecting the start-of-cut direction, and whereby the output signal of the photo-transistor (13) can be fed to a comparison step (21) and the output signal of the comparison step (21) to the motor pole reversal stage (17) as a correction change-over signal during the cutting operation.