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When it comes to electronic length control of roll formed parts, a material encoder is a critical part of the process. That’s because the encoder is the measuring device for the system. Everything the control system knows about the material comes from the encoder – speed, distance, and direction. If the encoder hardware is defective,
Accurate and consistent part lengths are crucial to quality control in roll forming processes. Even if parts are produced in tolerance, a batch of parts that are inconsistent in length will be more rigorously scrutinized by the end-user than a stack where the ends of all the parts line up. Encoder and material tracking problems
Encoder and material tracking problems account for most product length variations on computer controlled roll forming lines. From the perspective of a length control system, all information regarding the material – direction, speed, distance traveled – comes from a single point, where the encoder measuring wheel contacts the material. Proper tracking of the encoder measuring