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A novel dual-channel weld seam tracking system for aircraft T-joint welds

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Abstract

Laser welding technology for skin-stringer joints is widely used in aircraft manufacturing. Double-sided laser beam welding of skin-stringer joints is an approved method for producing defect-free welds. The main drawback for the use of single-sided welding method for T-joints is the occurrence of weld defects. To achieve dual-beam laser-welded T-joint, a dual-beam laser welding platform based on multi-axis CNC machine is set up in this paper. A novel control method of double-sided seam tracking and error compensation based on vision sensor is proposed. The weld seams on both sides of the T-joint are detected simultaneously by two vision sensors. At the same time, the welding deviation on both sides of the T-joint are compensated at real time by an independent error compensation control method based on self-adaptive fuzzy-PID controller. The result shows that the dual-beam laser welding system can achieve high precision dynamic deviation compensation in the double-sided welding process at a high speed.

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Authors and Affiliations

  1. School of Mechanical Engineering, Huazhong University of Science and Technology, Wuhan, China

    Yu Huang, Gen Li, WenJun Shao, ShiHua Gong & XiaoLong Zhang

Authors
  1. Yu Huang
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  2. Gen Li
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  3. WenJun Shao
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  4. ShiHua Gong
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  5. XiaoLong Zhang
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Corresponding author

Correspondence to WenJun Shao.

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Huang, Y., Li, G., Shao, W. et al. A novel dual-channel weld seam tracking system for aircraft T-joint welds. Int J Adv Manuf Technol 91, 751–761 (2017). https://doi.org/10.1007/s00170-016-9788-5

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  • DOI: https://doi.org/10.1007/s00170-016-9788-5

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