Model-Driven
Uses an available three-dimensional model for geometry interpretation and path planning when the model and physical workpiece can be reviewed together.
Review this pathStructural steel workflows
Welding Robot Technology for Structural Steel Workflows
Honglu evaluates Model-Driven, No-Model and Node-Based paths as different engineering routes. Workflow selection follows geometry, available data, repeatability and access.
Equipment details
Visible system elements in factory context
These factory views show welding robot, torch, cabling, rail and auxiliary equipment context. Supplied functions and final configuration remain subject to project review.
Workflow overview
Three paths with different inputs and limits
Each path defines how geometry and weld information enter planning. None removes the need to review welding requirements, collision risk, torch access and project responsibility.
No-Model
Uses a documented reverse-modeling route for flat web-and-stiffener workpieces under limited geometry, visibility and sensing conditions.
Review this pathNode-Based
Uses nodes prepared in advance for a recurring condition. New details and exceptions may require separate development and human judgment.
Review this pathEngineering meaning
What teachless means in this context
The term describes reducing conventional point-by-point robot teaching through prepared digital or sensing workflows.
It does not remove the need for models or drawings when the selected route requires them. It also does not remove setup, defined weld information, workpiece preparation or engineering judgment.
Human review remains necessary for exceptions, process selection, safety and production approval. The practical question is which preparation work can move into a repeatable engineering workflow for the submitted component.
01 · Model-Driven
Connect the digital model to the physical workpiece
Documented functions can include model interpretation, weld extraction, trajectory planning and collision checking, depending on the selected workpiece, data and configuration.
A complete model does not by itself confirm torch access, welding procedure or final cell layout. Engineering review connects the planned path with the real assembly, fixtures and production sequence.
Inputs to prepare
- A three-dimensional model with file format and revision status.
- Drawings defining dimensions, datums, weld symbols and preparation.
- A weld list identifying the seams included in the proposed scope.
- Assembly variation, fixtures and actual loading condition.
- Local details for restricted areas and special-access joints.
02 · No-Model
Keep the documented geometry boundary
The documented reverse-modeling path is limited to flat web-and-stiffener workpieces and depends on point-cloud completeness, blind areas and reliable weld localization.
Sensing can supply geometry information, but it does not decide the welding requirement or acceptance basis. Representative geometry and actual fit-up still need an engineering definition.
Inputs to prepare
- Sections showing the web, stiffeners, welds and surrounding clearance.
- Photos of representative fit-up and surface condition.
- Expected variation in plate position, thickness and assembly.
- Fixtures or process steps that may block the view or torch.
- A clear joint list for evaluation through this path.
03 · Node-Based
Prepare recurring details for the actual application
The path depends on nodes prepared in advance. A new workpiece or unfamiliar detail may require separate node development and human judgment.
This route is most relevant when a repeatable detail can be defined clearly enough for preparation and reuse. The evaluation should also define how operators identify and handle exceptions.
Inputs to prepare
- A representative drawing and local detail for every repeated node.
- The weld definition and required sequence for the node.
- Expected variation between nominally similar parts.
- Examples of exceptions outside the prepared condition.
- The production mix and frequency of each recurring detail.
Software and vision
Define functions by their role in the reviewed workflow
A vision inquiry still needs confirmation of what is sensed, which geometry is expected and how the result is checked.
No camera model, software version, accuracy value or universal sensing range is stated here. The final system name does not establish who supplies every software module or algorithm.
Project review should define supplied functions, interfaces and responsibilities for the selected configuration.
Collision and access
Check the digital path against physical clearance
Collision checking depends on an accurate and complete representation of the workpiece, tooling and cell.
It does not replace physical clearance review, safety planning or confirmation of loading conditions. Check approach angle, nearby plates, fixtures, cables and sequence, including difficult seam start and end points.
Product connection
Review product direction and workflow as separate decisions
A workpiece may match an application direction while still requiring a different data or programming path.
7-Axis Rail-Mounted Welding RobotBuilding steel and relatively open beam or column evaluation. 8-Axis Cantilever Welding RobotBridge steel, plate-unit diaphragm and wide-planar evaluation. Beam & Column WeldingPrepare geometry, stiffener and access information. Bridge Steel WeldingPrepare joints, coordinates, envelope and site inputs.
Workflow questions
Clarify the input path before configuration
Is a three-dimensional model always required?
The Model-Driven path depends on a usable model and agreement with the physical workpiece. The documented No-Model path has a narrower geometry boundary and still needs workpiece and weld information.
Can scanning remove all preparation?
No. Sensing does not replace weld definitions, fit-up review, process planning or confirmation of access.
Can a workflow be confirmed from a video?
A video can show visible movement, workpiece context and operating sequence. It cannot by itself confirm software scope, hidden inputs, configuration or suitability for another workpiece.
Project inputs
Information needed for workflow selection
Missing information can be collected in stages, but the route cannot be selected from a component name alone.
- Product family, representative workpiece and required weld list.
- Overall geometry and difficult local details.
- Available three-dimensional model and its production status.
- Normal fit-up condition and important sources of variation.
- Product mix, batch pattern and change frequency.
- Loading method, fixture arrangement, cell space and data constraints.
Project evaluation
Request a workflow evaluation
Send the workpiece drawing, available model, weld list and difficult details so the three paths can be compared for the project.
The website inquiry mailbox receives and routes your message. Your inquiry will be reviewed by Honglu’s engineering and commercial teams. Project scope and commitments are confirmed in reviewed project documents and quotations.