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Development of seam tracking sensing system for welding environment with wall  

Park, Young-Kyun (국립목포대학교 기계공학과 대학원)
Byun, Kyung-Seok (국립 목포대학교 기계공학과)
Publication Information
Journal of the Institute of Convergence Signal Processing / v.11, no.4, 2010 , pp. 338-344 More about this Journal
Abstract
Both ends of welding line are often closed by wall in the welding of ship blocks. In this research, seam tracking sensing system for butt welding in the condition with wall was developed. Seam tracking sensing system measures position of carriage from wall and detects root-pass of welding line. The system consists of the laser displacement sensors and ultrasonic sensors. The laser displacement sensor reciprocal1y rotates by the motor and measures a distance from laser sensor to the welding material. The ultrasonic sensor measures a distance between welding system and walls. The distance measured by the ultrasonic sensor is used to get X(driving) position and to determine initial and end point of the weld line. Y(weaving) and Z(height) of the weld line are obtained by the distance measured by the laser displacement sensor and the orientation of the sensor. The sensing system includes the controller that is independent from the welding carriage. The seam tracking sensing system is attached to both side of welding carriage so that interference between welding torch and sensing system can be avoided during the welding. And both side sensing system minimize dead zone. Finally, developed sensing system was adhered to welding carriage and verified usefulness by experiments.
Keywords
seam tracking; welding automation; laser displacement sensor; ultrasonic sensor;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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