Introduction OTC LASER SEARCH

OTC  Laser search sensors, specifically the FD‑QD “Quick Detect” and FD‑QTS laser tracking models, are advanced non-contact systems designed to detect part position and weld gap before welding begins.
These sensors help robotic welding systems automatically adjust for deviations, ensuring precise and efficient operation.

Sensor Models & Features

• FD‑QD Quick Detect

• • • High-accuracy part finding:
      Uses laser triangulation to detect workpiece position with ±1 mm precision, across thin to medium plates.
    • Fast operation:
      searches at speeds up to 200 cm/min, offering faster part setup than traditional touch sensors.
    • Seam & groove profiling:
      Capable of recognizing various weld joint types and visualizing results on the teach pendant.
      Unique laser detection combines simplicity of touch with higher accuracy.

• FD‑QTS Laser Tracking

• • • Look-ahead seam tracking:
      Projects a laser stripe plus camera to sense seam profile ahead of welding, enabling dynamic adjustments.
    • Ultra-high tracking speed:
      Up to 1000 cm/min, suitable for high-speed and laser-hybrid welds
    • Integrated automation:
      Fully operated from the teach pendant—no PC required—with live profile view and built-in joint geometry library.

Integration & Advantages

Both sensors are seamlessly integrated into OTC DAIHEN robotic welding cells.
They are installed via the robot controller and teach pendant, offering setup, monitoring, and control without external PCs.
   Benefits include:

• • • Enhanced weld consistency by pre-aligning workpieces.
    • Reduced cycle time through fast, automated part detection.
    • Flexible application across thin to thick plates and diverse joint types.
    • Maintenance simplicity with no physical torch modifications.

Typical Applications

• • • • Automated seam finding and joint profiling prior to arc initiation
      • Adaptive compensation for part misalignment or fixturing variations
      • Supplementing arc sensors (e.g., FD‑AR) for higher accuracy weld control
      • Applicable in MIG, TIG, plasma, and high-speed laser welding scenarios.

The OTC FD‑QD and FD‑QTS laser search sensors deliver cutting-edge part recognition and seam profiling capabilities. With non-contact accuracy, fast operation, and seamless robotic integration, they significantly improve welding precision, productivity, and adaptability across industries.
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