X4 i-Robot

Inline Robotic Inspection Solution

Flexibility & Productivity serving metrology within the production line.

The Metrolog X4 i-Robot technology is suitable for all industrial robots; it provides a production metrology solution accurate, reliable and flexible. Metrolog X4 i-Robot is perfectly suited for applications requiring flexibility and productivity while providing high metrological accuracy.
  • Measuring accuracy fully independent of robot’s positioning precision.
  • Robot movements perfectly synchronized with measurement.
  • Robot trajectory entirely controlled by Metrolog X4 part program.

The Metrolog X4 i-Robot measuring system is based on a high speed acquisition laser scanner attached to a multi-axes robot wrist. The robot, of any type or brand, without specific accuracy, behaves as a simple tool holder. The measuring accuracy is provided, either by a separate tracking camera following the laser sensor box equipped with positioning LEDs, or by a laser tracker system.

The main applications can be found in the automotive, aerospace and their sub-contractors for the manufacturing lines metrology control.


  • Scans almost all shapes of parts due to enhanced sensor performance.
  • A laser tracker or photogrammetric system for accurate 3D positioning of optical scanner within the measuring area.
  • Metrolog X4 software for comparative analysis of dimensional characteristics of the part compared to its CAD definition, flush and gap, sections and surfaces.
  • Full control of robot directly from Metrolog X4 part programs.


  • Independent metrology chain: the measuring accuracy is independent of robot’s precision.
  • Perfect synchronization between measurements and robot movements.
  • Simplified programming of the robot trajectory directly from the CAD:

  • Time savings due to offline programming:
    • Complete flexibility when part is modified; simply update the trajectory inside Metrolog X4.
    • Independent of robot accuracy: tolerant to robot drift, warm-up and backlash.
    • No need for cyclic robot calibration.

  • Process integration by using industrial robots:

    • Fast and lean manipulator for laser scanner.
    • Flexible adaptation for different parts and models.
    • Interfaces to all robots brand or type, size and accuracy level.
    • Easy robot replacement in case of maintenance. It is not involved in the measurement chain; it may be replaced without wasting time, programming or calibration.

  • Robust and flexible integration.

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