White Light Seam Tracking System For Arc-Welding Robot

1988 ◽  
Author(s):  
T. C. Wang
Keyword(s):  
White Light ◽  
Arc Welding ◽  
Tracking System ◽  
Seam Tracking ◽  
Welding Robot

Seam tracking system based on rotating arc sensor for robot arc welding

2018 ◽  
Vol 21 (6) ◽  
pp. 1407-1412
Author(s):  
Jian-Hui Du ◽  
Jian-Xin Deng ◽  
Ke-Jian Huang ◽  
Jie-Sheng Huang ◽  
Xie Lei
Keyword(s):  
Arc Welding ◽  
Tracking System ◽  
Seam Tracking ◽  
Arc Sensor ◽  
Rotating Arc ◽  
Rotating Arc Sensor

Study on Seam Tracking System Based on Stripe Type Laser Sensor and Welding Robot

2015 ◽  
Vol 42 (5) ◽  
pp. 0502005
Author(s):  
李琳 Li Lin ◽  
林炳强 Lin Bingqiang ◽  
邹焱飚 Zou Yanbiao
Keyword(s):  
Tracking System ◽  
Seam Tracking ◽  
Laser Sensor ◽  
Welding Robot

A robust visual seam tracking system for robotic arc welding

Mechatronics ◽  
1996 ◽  
Vol 6 (2) ◽  
pp. 141-163 ◽  
Author(s):  
Jae Seon Kim ◽  
Young Tak Son ◽  
Hyung Suck Cho ◽  
Kwang Il Koh
Keyword(s):  
Arc Welding ◽  
Tracking System ◽  
Seam Tracking ◽  
Robotic Arc Welding

Noncontact Ultrasonic Sensing for Seam Tracking in Arc Welding Processes

1998 ◽  
Vol 120 (3) ◽  
pp. 600-608 ◽  
Author(s):  
S. B. Zhang ◽  
Y. M. Zhang ◽  
R. Kovacevic
Keyword(s):  
Arc Welding ◽  
Focal Length ◽  
Tracking System ◽  
Gas Metal Arc Welding ◽  
Transmission Efficiency ◽  
Seam Tracking ◽  
High Frequency Ultrasound ◽  
Tracking Accuracy ◽  
Metal Arc Welding ◽  
Welding Processes

A novel seam tracking technology based on high frequency ultrasound is developed in order to achieve high accuracy in weld seam identification. The transmission efficiency of the ultrasound is critical for obtaining a sufficient echo amplitude. Since the transmission efficiency is determined by the difference in impedance between the piezoelectric ceramic and air, match layers are designed to optimize the transmission efficiency by matching impedance. Since the air impedance depends on the density and velocity of the ultrasound, which both depend on the temperature, the optimization has been done for a wide bandwidth. Also, the receiving circuit is designed so that its resonance frequency matches the frequency of the ultrasound. As a result, the sensitivity of the noncontact ultrasonic sensor is improved 80-fold. By properly designing the focal length of the transducer, a high resolution ultrasound beam, 0.5 mm in diameter, is achieved. Based on the proposed sensing technology, a noncontact seam tracking system has been developed. Applications of the developed system in gas tungsten arc welding (GTAW) and CO2 gas metal arc welding (GMAW) processes show that a tracking accuracy of 0.5 mm is guaranteed despite the arc light, spatter, high temperature, joint configuration, small gap, etc.

A study on an automatic seam tracking system by using an electromagnetic sensor for sheet metal arc welding of butt joints

2002 ◽  
Vol 216 (6) ◽  
pp. 911-920 ◽  
Author(s):  
B-H You ◽  
J-W Kim
Keyword(s):  
Sheet Metal ◽  
Arc Welding ◽  
Tracking System ◽  
Weld Line ◽  
Welding Process ◽  
Seam Tracking ◽  
Displacement Sensor ◽  
Tracking Accuracy ◽  
Metal Arc Welding ◽  
Electromagnetic Sensor

Many sensors, such as the vision sensor and the laser displacement sensor, have been developed to automate the arc welding process. However, these sensors have some problems due to the effects of arc light, fumes and spatter. An electromagnetic sensor, which utilizes the generation of an eddy current, was developed for detecting the weld line of a butt joint in which the root gap size was zero. An automatic seam tracking system designed for sheet metal arc welding was constructed with a sensor. Through experiments, it was revealed that the system had an excellent seam tracking accuracy of the order of ±0.2mm.

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