Assembly Planbook - April 2008 - (Page 20) Assembly in Action Ad - Assembly.ai 5/30/2007 12:01:35 PM Trackers Achieve Unprecedented Accuracy he $1.4 billion Spallation Neutron Source (SNS) at the Oak Ridge National Laboratory (ORNL) in Tennessee is used to create high-energy neutron beams to investigate the molecular structures of everything from T superconductors to proteins in living cells. An extraordinary feat of precision engineering, the 3,000-foot-long SNS system is comprised of hundreds of magnets and other components distributed within a series of underground tunnels. A work-in-progress, engineers are continually upgrading the system with an eye toward eventually being able to Engineers have been using laser trackers to align the thousands of magnets and other components that make up the Spallation Neutron Source in Oak Ridge, TN. USING TECHNO AUTOMATION GER OYA V S RIE 1 SE VB Stock Lengths Up To 3 Meters Custom Lengths Up To 6 Meters All Steel Profile Rail For High Load Capacity 50mm Wide Steel Reinforced Belt For Heavy Loads VISIT OUR WEBSITE at www.technoautomation.com GANTRY TABLE DOWNLOAD 3D MODELS REQUEST FREE CATALOGS XY or XYZ 12 Series Glue Dispensing Assembly Inspection Pick & Place QUALITY Linear Motion Systems AFFORDABLE Techno Inc. SINCE 1986 1-800-819-3366 www.technoautomation.com generate some 1.4 megawatts of beam power—eight times more than any other pulsed neutron source in the world. Critical to the success of the project has been the work of the SNS survey and alignment group, which positions the many pieces of equipment making up the system in cooperation with the other groups comprising the overall design team. When a component arrives at the SNS loading dock, it is the survey and alignment team that creates any necessary fiduciaries, pinpoints the component’s location within the interior network, and then sets and aligns it within the overall system. The survey and alignment group is also responsible for integrating the many engineering drawings that make up the SNS into a single 3D coordinate system. To ensure accurate placement and alignment, the team has been using a set of four LTD500 portable laser tracking systems from Leica Geosystems (Miamisburg, OH) in conjunction with some 1,400 “monument”reflectors, which serve as fixed reference points throughout the system. Equipped with a high-speed tracking 3D laser interferometer and precision angular encoder, the LTD500s provide measuring rates of 1,000 points per second at a range of 100 feet. The group is also using an LTD640 laser tracker with a measuring rate of 3,000 points per second and a measurement range of 131 feet. Together, the trackers make it possible for both group members and suppliers to capture 3D coordinate data on-demand, validate designs, build-and-inspect, confirm close tolerance work, and 20 ASSEMBLY / April 2008 www.assemblymag.com http://www.technoautomation.com http://wwwwww.t.tecechnoauthnoautomation.comomation.com http://wwwwww.t.tecechnoauthnoautomation.comomation.com http://www.assemblymag.com
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