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Towards a Uniform Welding Quality: A Novel Weaving Welding Control Algorithm Based on Constant Heat Input.

Hong Lu1, Zidong Wu1, Yongquan Zhang1

  • 1School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China.

Materials (Basel, Switzerland)
|June 10, 2022
PubMed
Summary

This study introduces a new robotic weaving welding control algorithm. It maintains constant heat input by adapting welding speed, significantly improving multi-layer welding quality.

Keywords:
constant heat inputmulti-pass weldvelocity-adaptive trajectory planning algorithmweaving weld

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Area of Science:

  • Robotics
  • Materials Science
  • Manufacturing Engineering

Background:

  • Weaving welding is crucial for enhancing robotic multi-layer and multi-pass welding quality.
  • Heat input fluctuations during weaving welding hinder process development and weld quality.

Purpose of the Study:

  • To develop a novel weaving welding control algorithm for maintaining constant weld heat input.
  • To address the challenge of heat-input fluctuation in robotic welding applications.

Main Methods:

  • Modeling heat consumption in weaving welding to understand parameter influence.
  • Developing a velocity-adaptive trajectory planning strategy using transformation matrices.
  • Integrating workpiece and robot coordinate system relationships for control.

Main Results:

  • The proposed algorithm effectively models heat consumption and its relation to weaving parameters.
  • Velocity adaptive planning successfully compensates for weaving parameter variations.
  • Constant heat input was maintained, leading to improved robotic multi-layer and multi-pass welding quality.

Conclusions:

  • The developed algorithm offers a viable solution for stable heat input in robotic weaving welding.
  • This advancement contributes to higher quality and reliability in automated welding processes.
  • The strategy enhances the potential of robotic welding for complex fabrication tasks.