METROLOGY He said that structured light systems like the
ATOS are particularly good for automating be- cause they measure large patches of data from a single viewing perspective. They also achieve their accuracy independent of the motion control equipment’s accuracy and repeatability. The device needs to be durable as well, also making structured light systems ideal. “When a metrol- ogy device is integrated with a robot, it must be able to endure [that robot’s high] velocity and accelerations/decelerations,” he explained. He has seen automated metrology grow as a market. While their automated ATOS systems are used in many different industries, the two largest industries up to now have been automotive and aerospace. In automotive, many of these systems are used for inspect- ing sheetmetal parts and assemblies, while in aerospace, the most common inspection
This is what power, precision,
ShapeGrabber Ai series of 3D scanners includes the Ai310 for inspection of smaller parts and the Ai810 (not shown) for larger parts up to 1250 × 800 × 700 mm.
and innovation looks like. Over fifty years in the industry and 7,000+ items to show
is turbine engine airfoils. “In each of the industries we have seen tremendous growth,” he said. “In 2011 we experienced 28% of our business in automated solutions, which grew to 60% in 2015.”
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What about optical metrology in general? “Noncontact systems will continue to grab more and more market share because they are able to provide more complete part infor- mation than tactile systems,” he said, and along with that will be even more automated installations. “This will lower the cost of entry for automated solutions,” he stated. Pierre Aubrey, CEO of ShapeGrabber (Ottawa) agrees that optical systems like his company’s ShapeGrabber 3D laser scanners are ideal for automation. “They reduce the need for the operator to know intimate details of the part or metrology. With 3D scanning you capture all of the data, not just the metrologically signifi cant information,” he explained. Since less knowledge is needed at the data capture stage, it is easier to automate.
The ShapeGrabber Ai series of automated laser scanners
are ideal where high accuracy coupled with repeatability of results is vital for the job. The ShapeGrabber scanner is de- signed so that no special fi xturing or physical registration of the part is needed. An operator simply places the part in the cabinet then lets it digitally capture the detailed part shape in a series of scans. Alignment, registration and measure-
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