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Laser Seam Tracking & Finding

Joint Types

Angle Joint

Butt Joint

Corner Joint

Lap Joint

T-Joint

Saddle Weld

Seam Track and Find

1D Laser Seam Touch

Non-Contact • Speed & simplicity • Material flexibility • Fewer manual touchups

A quick, cost-effective method for single-point seam detection before welding that helps robots find joint positions adaptively. Use 1D seam finding for part-to-part variation causing weld inaccuracies. Ideal for simple joints needing basic offset corrections for reliable welds.

2D Laser Seam Find

Detailed joint geometry • Material flexibility • Versatile joint handling • Fewer manual touchups

This captures a full seam cross-section as the robot scans, enabling detailed pre-weld joint locations and geometry info. No extra joint search movements are needed, reducing cycle times compared to 1D Laser Seam Finding & Touch Sensing. Use 2D seam finding instead of 1D for complex geometries, faster cycles, or joint detail for fit-up verification

3D Laser Seam Track

Consistent quality • Material flexibility • Built-in robustness • Fewer manual touchups

3D enables continuous joint scanning during welding, automatically adjusting for movement, distortion, or fixture variation. No weaving allows higher speeds and shorter cycles. Use 3D seam tracking for joint shifts in pre- or in-process, such as distortion, ovality variation, or when live joint data (height, width, angle, cross-section) is needed for control or verification.

SERVO-ROBOT laser-vision systems are used to perform 3D joint tracking, robotic inspection, intelligent process control and monitoring in applications such as robotic arc and laser welding, laser brazing, & robotic dispensing in various fields.

wenglor is a large company specializing in many types of sensors and products. For the robotic welding applications, it is a seamless integration for touchless sensing, seam find, and seam track.

FANUC 2D & 3D iRVision

FANUC’s iRVision system for robotic welding offers 2D and 3D vision to improve precision and efficiency. With Field of View robots can locate parts, track weld seams, and inspect welds, reducing the need for costly fixtures and manual work.

  • Detects Part Position: Detect the part position and orientation eliminating the need for precise fixturing
  • Weld Tip Inspection: Helps monitor the condition of the weld tips and torches, preventing wear and tear to ensure the quality of the weld
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FANUC’s 3DV, part of the iRVision system, is a 3D vision system designed for robotic welding applications. It uses structured laser light to enable robots to accurately locate and track parts for welding, even with variations in surface conditions. This enhances precision, speed, and reliability in automated welding processes.

In addition, iRVision doesn’t require an interface to external devices or any additional hardware (such as PCs, monitors or side cabinets) for the set up and operation. The vision process configuration can be done directly on the robot controller itself, on the Teach Pendant, or on any IE-capable device. All robots and controllers are iRVision ready.

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