Design and implementation issues of a control system for rotary saw cutting

Improvements over the previous years have expanded the range of applications of rotary saw cutting. In the present work, design and implementation issues of a control system for a steel tube cutting rotary saw are presented. During the cutting stage, tracking of the linear velocity of the tube and preservation of flatness of the edges of the tube compel the angular velocity of the saw to vary cosinusoidally. The tubes are cut in specified lengths that the operator defines. The motion is calculated based on feedback data of angular position via an encoder connected to the secondary axis of the motor. Feedback data regarding the length and the velocity of the tube are provided also via the encoder connected to the axis of the sensor roll, -adjacent to the tube at the saw entry.