Intelligent welding control system and method for thick-plate narrow-gap GMA robot

A control system and robot technology, applied in welding equipment, manufacturing tools, arc welding equipment, etc., to achieve the effect of facilitating welding quality

Active Publication Date: 2019-04-12
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method only solves the welding seam tracking after the welding arc is stable, and manual guidance and setting specifications are still required before welding
[0006] To sum up, in the intelligent research of narrow-gap GMA welding of robots, the existing welding methods still have many disadvantages

Method used

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  • Intelligent welding control system and method for thick-plate narrow-gap GMA robot
  • Intelligent welding control system and method for thick-plate narrow-gap GMA robot
  • Intelligent welding control system and method for thick-plate narrow-gap GMA robot

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specific Embodiment approach 1

[0046] Specific implementation mode one: refer to figure 1This embodiment is described in detail. The intelligent welding control system for thick plate narrow gap GMA robot described in this embodiment includes a Hall current sensor 11, a laser vision sensor 12, an infrared temperature sensor 13, an industrial computer 2, a main control PLC31, slave PLC32, seam tracking controller 5 and LCD touch screen 8.

[0047] The Hall current sensor 11, the laser vision sensor 12 and the infrared temperature sensor 13 constitute the multi-source information sensing part of the intelligent welding control system, and the main sensing functions are as follows:

[0048] The Hall current sensor 11 is used to collect the average value of the current in the stable state of welding, and the average value of the current is the average value of the current at the left and right sides of the stop position and the center position of the groove in each arc movement cycle; the laser vision sensor 12...

specific Embodiment approach 2

[0064] Specific implementation mode two: refer to figure 2 Specifically explain this embodiment, the intelligent welding control system for thick plate narrow gap GMA robot according to claim 1 described in this embodiment, the intelligent welding control method for thick plate narrow gap GMA robot, comprising the following steps :

[0065] S1: collect the thickness of the workpiece to be welded, the groove form, the workpiece material and the groove image of the workpiece to be welded,

[0066] S2: Perform image noise reduction, binarization, inflection point recognition and smoothing processing on the groove image in sequence to obtain the groove width, welding start point position and welding end point position of the workpiece to be welded,

[0067] S3: Match the groove width of the workpiece to be welded with the standard workpiece model library, if it matches, execute S4, if not, execute S5,

[0068] S4: Determine the number of welding layers, welding specifications a...

specific Embodiment

[0080] Jack-up platforms (such as wind power installation ships, riprap leveling ships, and oil and gas drilling platforms, etc.) are mainstream marine engineering equipment for offshore resource exploration and exploitation. The key is to stabilize the legs of the platform, and its structural design and manufacturing directly affect To the service safety and use effect of the platform. As the core load-bearing part of the pile leg, the rack not only bears the weight of the platform itself, but also withstands the erosion and damage caused by harsh sea conditions such as wind, waves, currents, drift ice, and marine earthquakes. At present, the rack steel is generally used in the world. Extra-thick special steel for advanced quenching and tempering heat treatment strengthening with a yield strength of 690MPa or more and a thickness specification of 120mm or more (see Table 1). Due to the construction characteristics of large scale, ultra-thickness, high strength, high toughness...

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Abstract

The invention discloses an intelligent welding control system and method for a thick-plate narrow-gap GMA robot, and relates to the technical field of welding. The system and method are used for realizing narrow-gap GMA intelligent welding of the thick-plate robot. According to the intelligent welding control system and method for the thick-plate narrow-gap GMA robot, sensing elements of a laser visual sensor, a current sensor, a temperature sensor and the like, and execution mechanisms of a robot, a wire shearing device, a slag removing device and the like are integrated, so that the narrow-gap GMA intelligent welding of the thick-plate robot is realized on the basis of hierarchical control, internet of things and the computer technology.

Description

technical field [0001] The invention belongs to the field of welding technology, and in particular relates to gas-shielded arc welding technology. Background technique [0002] With the rapid popularization of modern industrial equipment and national major projects to high-capacity and high-parameters, the large-scale, heavy-duty, high-strength, and thick-plate industrial equipment has become the most important feature of today's manufacturing industry. As the quantity increases geometrically, the contradiction between welding production efficiency, manufacturing cycle and manufacturing cost becomes increasingly prominent. High-efficiency, high-quality, and low-cost welding of thick plates has become the frontier of today's manufacturing technology development. Narrow gap gas metal arc welding (GMAW) has comprehensive technical advantages such as small groove filling area, high deposition efficiency, low welding heat input, and all-position welding. The best technical appr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/02B23K9/095B23K9/127B23K9/167
CPCB23K9/02B23K9/095B23K9/0953B23K9/127B23K9/1274B23K9/167
Inventor 兰虎张华军鄂世举邵金均张卫田景红
Owner ZHEJIANG NORMAL UNIVERSITY
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