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Teaching-Free Gantry Robotic Welding for Steel Structures

HRGWR Gantry Intelligent Robot Welding Workstation

Intelligent gantry robotic welding workstation for automated and flexible welding of steel structural components used in steel buildings, ships, bridges and mechanical equipment, with teaching-free programming, 3D model input and laser-vision-based reverse modeling.

The HRGWR gantry intelligent robot welding workstation is designed for automated welding of steel structural components used in steel-structure buildings, ships, bridges and mechanical equipment. The system uses a gantry structure that can be installed and arranged according to workshop layout and production flow. It is suitable for high-volume production as well as non-standard customized parts and steel structures with diverse specifications. Its intelligent robot welding control workflow can generate welding programs from a 3D digital model or from reverse modeling using a line laser stereo camera. The workflow includes intelligent obstacle-avoidance path planning, laser-vision path correction and automatic matching of the welding process according to plate thickness and welding position. During welding, arc tracking and laser tracking can correct the welding path in real time. Multi-layer and multi-pass welding can also be performed when application conditions are suitable.

HRGWR gantry intelligent robot welding workstation for automated welding of steel structural components


  •  Applications: steel structural components for steel buildings, ships, bridges and mechanical equipment.
  •  Gantry Workstation: the robot welding system is integrated into a gantry structure arranged according to workshop layout and production process.
  • Teaching-Free Workflow: supports fast automatic programming from a 3D digital model of the workpiece.
  •  3D Model Compatibility: the supplied source states support for Tekla software and .ifc, .step and .stp file formats; exact software versions and integration should be verified before publication.
  •  Reverse Modeling: when a 3D model is unavailable, the workpiece can be scanned with a line laser stereo camera to obtain contour information for subsequent welding operations.
  • Intelligent Path Planning: includes obstacle-avoidance path planning for required welds and laser-vision-based correction of the welding path.
  •  Automatic Welding Process Matching: the source describes automatic matching of the welding process according to plate thickness and welding position.
  • Real-Time Tracking: arc tracking and laser tracking can correct the welding path during welding.
  •  Multi-Layer / Multi-Pass Welding: supported when application conditions are met.
  •  Selection inputs: workpiece drawings or 3D model, material, plate thickness, weld type and position, component dimensions, production mix, required output and workshop layout.

Teaching-Free / Programming-Free Intelligent AI Work Process

  1.  Import the available 3D digital model of the workpiece, or scan the workpiece with the line laser stereo camera for reverse modeling.
  2.  Identify the welds and perform intelligent obstacle-avoidance path planning.
  3.  Scan and correct the welding path using the laser vision sensor.
  4.  Match the welding process according to the application and automatically create the welding program.
  5.  Execute robotic welding while arc tracking and laser tracking provide real-time path correction.

Line Laser Stereo Camera

The supplied source describes the line laser stereo camera as a measuring device combining line-laser technology with stereo vision. After scanning the workpiece, it obtains contour information that can guide reverse modeling and subsequent welding operations.

Questions we are asked

What is the HRGWR gantry intelligent robot welding workstation?

It is an automated robotic welding workstation using a gantry structure for welding steel structural components in applications such as steel buildings, ships, bridges and mechanical equipment

Can the system generate welding programs without conventional teaching?

The supplied source describes a teaching-free workflow that can automatically create welding programs from a 3D digital model or from reverse modeling based on line-laser stereo-camera scanning.

Which 3D file formats are mentioned?

The supplied source mentions .ifc, .step and .stp files and states support for Tekla software. Exact software versions, interfaces and workflow compatibility should be verified for the supplied configuration.

What happens when no 3D model is available?

The workpiece can be scanned with a line laser stereo camera for reverse modeling, after which the system can plan welding paths and create the welding program.

Does the system support automatic path correction?

Yes. The supplied description states that laser vision is used for path correction and that arc tracking and laser tracking can correct the welding path in real time during welding.

Can it perform multi-layer and multi-pass welding?

Yes, when the application conditions and selected welding procedure are suitable

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