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QMT Products: May 2013
Robot-mounted 3D scanners
The Metroscan series of robot-mounted optical CMM 3D scanners are designed for automated inspection on and off the production line. The device, from Creaform, was world premiered at the CONTROL tradeshow in Stuttgart, Germany earlier this month.

Creaform ‘s  robot-mounted can inspect a wide range of parts directly on the shop floor, because of its TRUaccuracy technology and extensible measurement volume. The device's scanning speed and the fact that is it mountable on robot make it possible to inspect directly on the production limetrascan-r_car_doorWebne.

"There was a definite lack in the manufacturing industry for accurate and reliable devices to carry out automated on- and off-line 3D inspection processes on complex parts, explains Jean?François Larue, product director for the MetraSCAN-R series. High-rate serial production processes require fast 3D measurement systems that can inspect a part and deliver a conformity status within a typical cycle time. For us, it was obvious that a scanning device insensitive to shop floor conditions was the way to go."

The scanners are offered in two versions (70-R and 210-R) and designed for automated and robotized inspection applications such as on-line inspection in mass production (up to a few hundreds parts a day), on-line inspection of parts ranging from 0.5 to 3 meters in size, part-to-CAD analysis, supplier product quality inspection, conformity assessment of 3D models against original parts / production tooling or manufactured parts against originals.

The TRUaccuracy technology guarantees accuracy of up to 0.085 mm in real-life, shop floor conditions (no matter instability, vibrations, thermal variation, etc.). Accuracy is determined by the optical CMM scanner and is independent from the robot. With the C-Track's dynamic referencing mode, the coordinate system can be literally "locked" onto the part being measured, thus maintaining part alignment during the entire scanning process.  Optical reflectors allow automatic detection of the part alignment. The solution can be fully configured and programmed (inspection programs) to meet inspection automation projects requirements for parts of various sizes and shapes.

As for now, the MetraSCAN-R are compatible with robot KR5 Arc / KRC4 from KUKA and Metrologic's X4 iRobot software only. Efforts are ongoing to expand the range of compatible hardware and software.

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