Vision‐based pipeline girth‐welding robot and image processing of weld seam

For robot path planning the weld seam positions need to be known in advance as the industrial robot generally work in teach and playback mode. In this paper, a vision sensor has been utilized for automation of robotic welding path planning. A seam tracking algorithm has been proposed for a butt type of weld joint with varying weld gap for effective measurement of weld path positions and weld gap simultaneously. For this first an image acquisition algorithm technique has been proposed for capturing of image of weld seam in gray scale mode. Then in image processing at first one pattern matching algorithm for tracking of weld seam path is performed. Then different edge detection techniques have been applied to find the most efficient edge detection method for obtaining the characteristics of weld seam edge. Then best edge fitting method has been applied to fit the edges along the weld seam edge and the pixel values on the edges were measured. The weld gap and the midpoint between edges points are measured simultaneously by vision assistant toolbox in LabVIEW software background.

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Image Processing and Visual Control Method for Arc Welding Robot

2004 IEEE International Conference on Robotics and Biomimetics ◽

10.1109/robio.2004.1521871 ◽

2005 ◽

Cited By ~ 2

Author(s):

De Xu ◽

Linkun Wang ◽

Min Tan

Keyword(s):

Image Processing ◽

Arc Welding ◽

Control Method ◽

Visual Control ◽

Welding Robot

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A study on the modified Hough algorithm for image processing in weld seam tracking

Journal of Mechanical Science and Technology ◽

10.1007/s12206-015-1033-x ◽

2015 ◽

Vol 29 (11) ◽

pp. 4859-4865 ◽

Cited By ~ 16

Author(s):

Qian-Qian Wu ◽

Jong-Pyo Lee ◽

Min-Ho Park ◽

Byeong-Ju Jin ◽

Do-Hyeong Kim ◽

...

Keyword(s):

Image Processing ◽

Weld Seam ◽

Seam Tracking ◽

Weld Seam Tracking

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A path-planning algorithm of the automatic welding robot system for three-dimensional arc welding using image processing

2016 13th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI) ◽

10.1109/urai.2016.7734095 ◽

2016 ◽

Cited By ~ 4

Author(s):

Ken Chen ◽

Guang-Zhong Cao ◽

Jun-Di Sun ◽

Jun-Jun Yang

Keyword(s):

Image Processing ◽

Path Planning ◽

Arc Welding ◽

Three Dimensional ◽

Automatic Welding ◽

Welding Robot ◽

Robot System ◽

Planning Algorithm ◽

Path Planning Algorithm

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Weld Seam Recognition Based On CCD Image Processing

International Journal of Signal Processing Image Processing and Pattern Recognition ◽

10.14257/ijsip.2015.8.6.26 ◽

2015 ◽

Vol 8 (6) ◽

pp. 245-252

Author(s):

Jintao Yu ◽

Xian Li ◽

Mingli Ding ◽

Shicheng Dong ◽

Junling Li

Keyword(s):

Image Processing ◽

Weld Seam ◽

Ccd Image

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Study on Weld Shaping and Mechanical Properties for Three Movement Types of Arc Welding Robot Torch

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.127.187 ◽

2011 ◽

Vol 127 ◽

pp. 187-191 ◽

Cited By ~ 1

Author(s):

Jian Ping Jia ◽

Jian Ping Chen ◽

Yun Long Liu ◽

Ya Qin Zhang

Keyword(s):

Mechanical Properties ◽

Arc Welding ◽

High Speed ◽

Weld Seam ◽

Welding Robot ◽

Fillet Weld ◽

Rotating Speed ◽

Arc Sensor ◽

Experimental Researches ◽

Better Than

Compared with the existing arc sensors, high speed rotating scanning arc sensor has up to 50 HZ rotating speed, and it can be much more compact, cheaper and more sensitive. The arc welding robot can weld for three movement types using the high speed rotating scanning arc sensor. Weld shaping and mechanical properties for three movement styles of arc welding robot torch are studied. The macrostructure appearance characteristics of mild steel bead-on-plate weld seam section and fillet weld seam section are analyzed. Experimental researches are undertaken in tension and bending test.The results show that the weld shaping of rotating arc weld for bead-on-plate weld and fillet weld is better than that of linear motion arc welding and oscillating arc welding. This investigation will provide the theoretical basis for the advantage and choice of three arc movement styles in the practical production.

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