Waveform Control High-Speed Welding System for Arc Welding Robot

2007 ◽  
pp. 235-242 ◽  
Author(s):  
H. M. Chen ◽  
M. Zeng
Keyword(s):  
Arc Welding ◽  
High Speed ◽  
Welding Robot ◽  
Waveform Control ◽  
Welding System

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

2011 ◽  
Vol 127 ◽  
pp. 187-191 ◽  
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.

A Way to Weld Sheet Metal with Double-Electrode GMAW

2013 ◽  
Vol 651 ◽  
pp. 333-337 ◽  
Author(s):  
Guo Hong Ma ◽  
Yu Ming Zhang
Keyword(s):  
Arc Welding ◽  
High Speed ◽  
Gas Metal Arc Welding ◽  
Metal Transfer ◽  
Constant Current ◽  
Spray Transfer ◽  
Metal Arc Welding ◽  
Globular Transfer ◽  
Double Electrode ◽  
Welding System

This paper designed a double-electrode GMAW(gas metal arc welding) system. This system includes main arc and bypass arc. Main arc (Base metal current: Ibm) is supplied with Constant Current power (CC mode) and bypass arc (bypass current: Ibp) is Constant Voltage power (CV mode). Main arc electrode used common carbon wire, bypass arc electrode used water cool copper. Welding experiment shows this DE-GMAW can change common metal transfer into spray transfer with lowest critical total current (Itotal) 200 amps. When Ibm decreases and bypass voltage increases, this critical current will increase and it is less than 230 amps when keeping spray transfer. High speed video proved that metal transfer is changed from spray transfer to globular transfer.

scholarly journals Off-line programming of arc welding robot in computer aided welding system.

1988 ◽  
Vol 6 (3) ◽  
pp. 193-204
Author(s):  
Hitoshi MAEKAWA ◽  
Yoshinobu MAKINO ◽  
Tomoya KIGA ◽  
Tooru IIJIMA ◽  
Shuji NAKATA
Keyword(s):  
Arc Welding ◽  
Welding Robot ◽  
Computer Aided ◽  
Welding System

Experimental investigation and optimization on field shaper structure parameters in magnetic pulse welding

2021 ◽  
pp. 095440542110148
Author(s):  
Yingzi Chen ◽  
Zhiyuan Yang ◽  
Wenxiong Peng ◽  
Huaiqing Zhang
Keyword(s):  
Magnetic Field ◽  
High Speed ◽  
Light Metal ◽  
Magnetic Pulse ◽  
Cross Sectional ◽  
Magnetic Pulse Welding ◽  
Pulse Welding ◽  
Sectional Shape ◽  
Welding System ◽  
The Magnetic Field

Magnetic pulse welding is a high-speed welding technology, which is suitable for welding light metal materials. In the magnetic pulse welding system, the field shaper can increase the service life of the coil and contribute to concentrating the magnetic field in the welding area. Therefore, optimizing the structure of the field shaper can effectively improve the efficiency of the system. This paper analyzed the influence of cross-sectional shape and inner angle of the field shaper on the ability of concentrating magnetic field via COMSOL software. The structural strength of various field shapers was also analyzed in ABAQUS. Simulation results show that the inner edge of the field shaper directly affects the deformation and welding effect of the tube. So, a new shape of field shaper was proposed and the experimental results prove that the new field shaper has better performance than the conventional field shaper.

Development of six-DOF welding robot with machine vision

2018 ◽  
Vol 32 (34n36) ◽  
pp. 1840079
Author(s):  
Wensheng Huang ◽  
Hongli Xu
Keyword(s):  
Machine Vision ◽  
High Speed ◽  
Degrees Of Freedom ◽  
High Efficiency ◽  
Target Location ◽  
Industrial Robots ◽  
Welding Robot ◽  
Edge Pixel ◽  
Six Dof ◽  
Hardware Processing

The application of machine vision to industrial robots is a hot topic in robot research nowadays. A welding robot with machine vision had been developed, which is convenient and flexible to reach the welding point with six degrees-of-freedom (DOF) manipulator, while the singularity of its movement trail is prevented, and the stability of the mechanism had been fully guaranteed. As the precise industry camera can capture the optical feature of the workpiece to reflect in the camera’s CCD lens, the workpiece is identified and located through a visual pattern recognition algorithm based on gray scale processing, on the gradient direction of edge pixel or on geometric element so that high-speed visual acquisition, image preprocessing, feature extraction and recognition, target location are integrated and hardware processing power is improved. Another task is to plan control strategy of control system, and the upper computer software is programmed in order that multi-axis motion trajectory is optimized and servo control is accomplished. Finally, prototype was developed and validation experiments show that the welding robot has high stability, high efficiency, high precision, even if welding joints are random and workpiece contour is irregular.

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