Structure Design and Analysis of Welding Robot Manipulator : This Article is Published in the Journal of Engineering Research and Reports

Welding robot is a multi-degree-of-freedom robot. As a part of the robot, the manipulator is an important part to complete the welding operation directly. The structure design of the large arm, small arm and welding torch of the welding robot manipulator is carried out, and the structure of the manipulator is designed by pneumatic drive design. The results show that the designed manipulator meets the accuracy requirements and is completed by combining the swing cylinder, the lifting cylinder and the telescopic cylinder.

Author(s) Details:

Shoufei Hu

North China University of Water Resources and Electric Power,Zhengzhou, Henan, China.

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Recent Global Research Developments in Welding Robot Manipulator: Design and Analysis

Structural Design and Kinematic Analysis of a Welding Robot for Liquefied Natural Gas Membrane Tank Automatic Welding:

In this study, researchers designed a series–parallel–series hybrid structure mobile welding robot specifically for welding corrugated plates in membrane tanks used in liquefied natural gas (LNG) ships. The robot’s configuration allowed it to maintain a certain distance and angle between the welding torch and the weld line during automatic welding. Simulation and experimental results demonstrated its reasonable mechanism design, smooth motion, and effective terminal distance and angle control [1].

Kinematic Modeling and Performance Analysis of a 5-DoF Robot for Welding Applications:

This research focuses on designing an optimized robotic manipulator for welding tasks. The goal is to create an efficient trajectory motion, user-friendly interface, low power consumption, and cost-effectiveness. The proposed design integrates both parallel and serial manipulator principles, combining a Cartesian mechanism with rotational mechanisms. Notably, it replaces traditional 6-DoF robots while achieving similar reachability [2].

References

1. Yi, J., Qingqing, H., Zhaoen, D. et al. Structural design and kinematic analysis of a welding robot for liquefied natural gas membrane tank automatic welding. Int J Adv Manuf Technol 122, 461–474 (2022). https://doi.org/10.1007/s00170-022-09861-2
2. Karupusamy S, Maruthachalam S, Veerasamy B. Kinematic Modeling and Performance Analysis of a 5-DoF Robot for Welding Applications. Machines. 2024; 12(6):378. https://doi.org/10.3390/machines12060378

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