would bring the drilling to the part. In this case, they bring the part to the drilling, so it’s a very different process.” A Fori-developed precision magnetic measuring device gages the intensity of the magnetic fi eld and enables the vehicle to position itself at the assembly station to an accuracy of ±5 mm, with positioning repeatability of ±2 mm. The tooling and the F-35 center wing section weigh about 12,000 lb (5400 kg), and each time the tooling is moved to another drilling station, the AVG sup- ports that tolerance. At each station, vertical stanchions with locking cone details clamp onto the underside of the tooling providing the rigidity required to maintain hole accuracy when being drilled by the autodrills. An AGV comes in beneath the tool and picks it up, then works through safety protocols before moving the tool out of one station and into another.
“In this case, they bring the part to the drilling, so it’s a very different process.”
This type of automation for robotic drilling and other applications gives aerospace builders tremendous fl exibility. “We work with a lot of the companies that provide the robotic drilling because they need to move the robot around that plant,” Meloche said. “The whole premise is providing fl exibility, modular- ity, and increasing throughput. Reducing your dependence on overhead cranes in the plant is a driving force because of safety, the ineffi ciency of waiting for a crane and the safety concerns of lifting up your part over the top of other pieces. There’s a signifi cant push in aerospace assembly to move away from overhead cranes. Having a fl oor-guided automated system provides more accuracy, without
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CMI_mfg_eng_SMART1640III_half
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the need for a dozen operators and spotters to watch the unit go overhead on a crane, and is much more effi cient.” Most of the different AGVs built by Fori for aerospace will pick up parts—aircraft cockpit assemblies, wings, or fuselage
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