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Automatic welding control method and system based on dual-mode real-time welding seam tracking

An automatic control and real-time tracking technology, applied in welding equipment, manufacturing tools, arc welding equipment, etc., can solve the problems of less research on automatic tracking, achieve important practical application value, strong flexibility, and wide application

Active Publication Date: 2014-02-12
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are few studies on the application of rotating arc sensing technology to automatic welding systems to solve the problem of automatic tracking of space-complex trajectory welds (such as large-angle broken-line welds)

Method used

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  • Automatic welding control method and system based on dual-mode real-time welding seam tracking
  • Automatic welding control method and system based on dual-mode real-time welding seam tracking

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Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1, the present invention adopts a welding automation control method based on dual-mode real-time weld seam tracking. The automatic welding control method of mode real-time seam tracking realizes automatic welding. The specific control method includes: before welding starts, first perform welding initialization setting work on the welding special machine controller 8, including setting the welding initial position, process parameters, etc.; and initializing the rotary arc tracking system controller 6, including The arc rotation frequency of the rotating arc sensor head 1, the arc scanning radius, system initialization, etc.; secondly, the automatic welding mode is selected according to the production task, and two automatic welding control modes are provided: Mode 1 is superimposed tracking mode, that is, the preset welding mode The path is the main path, which is equivalent to the rough adjustment of the welding special machine system during weld seam trackin...

Embodiment 2

[0020] Embodiment 2, the weld deviation identification method based on rotating arc sensing includes interval integration method, or left and right extremum method, or characteristic harmonic method, or neural network method, or support vector machine method, the present invention adopts the method developed by Tsinghua University The interval integration method proposed by Pan Jiluan, Wu Shide, etc. refer to Figure 1 to Figure 2 , all the other are with embodiment 1.

Embodiment 3， 1 system ， system and system ， system system ， system and system 。 Embodiment 4

[0021] Embodiment 3, the present invention also provides a welding automation control system based on dual-mode real-time seam tracking, which includes a real-time seam tracking system and a numerically controlled welding machine system, and the real-time seam tracking system is based on a rotating arc sensor A welding seam real-time tracking system, the welding seam real-time tracking system is connected with the numerical control welding special machine system by using a signal control circuit. Embodiment 4, the special welding machine system includes a special welding machine power supply 7, a special welding machine controller 8, a special welding machine driver 9, an X-axis left and right adjustment carriage 10, a Y-axis height adjustment carriage 11, a welding special machine guide rail 12, and a welding special machine The motors on the frame 13 and the welding plane, the welding plane controller 8 is connected to the welding plane power supply 7, and is connected to the...

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Abstract

The invention discloses an automatic welding control method and system based on dual-mode real-time welding seam tracking, and mainly solves the technical problems of difficulty in automatic welding, low welding seam tracking precision and the like in a conventional space welding seam with a complex track. According to the technical scheme, the automatic welding control method and system based on dual-mode real-time welding seam tracking is proposed in combination with the characteristics of an electric arc sensing type real-time welding seam tracking system and a digital control type special welding machine system. According to the invention, the rotary electric arc sensing type welding seam tracking system is organically combined with the digital control type special welding machine system, the processing and assembly errors of workpieces and the position and size change of the welding seam caused by thermal deformation during welding are effectively compensated, and automatic tracking of the space welding seam with the complex track, especially a curved welding seam with high bending degree and a welding seam with a large-angle fold line is realized.

Description

technical field [0001] The invention relates to a welding control method and system, in particular to a control method and system for automatic welding. Background technique [0002] At present, during automatic welding, due to the processing and assembly errors of the workpiece, as well as the changes in the position and size of the weld seam caused by welding thermal deformation, accurate seam tracking methods must be used for real-time compensation; Welding, accurate real-time seam tracking technology is the premise to ensure its realization. [0003] Among the commonly used seam tracking sensors, the arc sensor has the best real-time performance. It has stable tracking performance and high precision for symmetrical groove welds. Compared with visual sensors, it has a simpler structure, smaller size, and lower cost. At present, although automated welding equipment has been widely used, most of the domestic automated welding equipment does not have the function of intelli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/127B23K9/10B23K9/032
CPCB23K9/125B23K9/1276B23K9/133
Inventor 洪波洪宇翔李湘文陈宇柳健
Owner XIANGTAN UNIV
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