metrologically significant information,” he said. Since less knowledge is needed at the data capture stage, it is easier to automate. The ShapeGrabber Ai series of automated laser scan- ners is ideal where high accuracy coupled with repeat- ability of results is vital for the job. The ShapeGrabber scanner is designed so that no special fixturing or physi- cal registration of the part is needed. An operator places the part in the cabinet lets it digitally capture the detailed part shape. Alignment, registration and measurement are handled automatically in software. Aubrey said while some ShapeGrabber systems can be robotically fed, the majority are used in quality rooms since they get measurement data faster than a CMM. The systems report baseline accuracies in the 15 to 30-

New Perceptron AutoScan Collaborative RoboGauge showing the operating (green), warning (amber) and protection (red) modes.

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 metrology device is integrated with a robot, it must be able to endure [that robot’s high] velocity and accelerations/decelerations,” he said. Demarest has seen automated metrology grow as a

market. While 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 inspecting sheetmetal parts and assemblies. In aerospace, the most common inspec- tion is turbine engine airfoils. 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 information than tactile systems,” he said, and along with that will be even more automated instal- lations. “This will lower the cost of entry for automated solutions.” ShapeGrabber CEO Pierre Aubrey agrees that optical

systems like his firm’s ShapeGrabber 3D laser scanners work well 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

µm range. A new 3D laser scanhead has the best accuracy and resolution the firm has produced to date.

Processes and adaptation The ideal applications for laser scanners are parts with

complex surfaces, such as injection molded plastics, stamp- ings, or castings like turbine blades. Business in orthopedic implants, such as knee and hip replacements, is growing. “The challenge in that field is getting the manufacturer

to change their measurement processes,” he said. Their QC methods have been developed over a long period of time assuming measurements would be made with older, often 2D technologies. And in the highly regulated medical indus- try, change is a challenge all its own. An important trend in robotics is safe collaboration with humans, a trend that Perceptron is adapting to with its AutoScan Collaborative RoboGauge. “Metrology is having an increasing role in assembly and manufacturing,” Percep- tron’s Jeff Boomer said, adding that people want to auto- mate metrology, in part because “it has been too remote from manufacturing, with a feedback loop that is too long.” Providing an adaptive solution, RoboGauge brings

automated 3D scanning to the plant floor, by combining one of its Helix scanners with a FANUC robot, integrated with a collaborative robot safety solution. The important point of the RoboGauge is it eliminates the need for a safety enclosure. Its perimeter is monitored using laser scanners that use diffused reflections of emitted infra- red lasers to create a two-dimensional programmable detection safety field. The RoboGauge Cell includes a rigid machine base for holding both robot and part fix- ture with translucent side panels that light up to provide visual color status indication.


Fall 2016

Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68