Abstract
The 787 46 Section Measurement Update; Jan. 14, 2014. Alenia is now using the “T” Probe to measure
1800 Determinant Assembly (DA) holes. Survey time a minimum of 8 to 12 HOURS. The accuracy of the “T” Probe with the varying length stylus can produce uncertainties up to +/- 0.010” . Alenia could use “Off The Shelf” Edge Recognition Software. (ERS). The Right Side Flash Bar creates a Bright, well exposed image, with a great half circle “Black hole” contrasted edge, for improved hole definition and location. The D.A. hole location accuracy is clearly defined by the Edge Recognition Software. Now the Left Side Flash Bar lights up the left side of the same measured D.A. hole. The half circle “Black Hole” high contrast edge, hole definition, is clearly defined by the Edge Recognition Software. The Two clearly defined halves of the same measured hole are now joined in the computer. The Determinant Assembly (DA) Hole, edge recognition location improves from .030 to .002, with this Boeing patented technology.
2014 Survey Time: The 46 Section Fuselage surveys would only require one hour ! The 46 section fuselage DA Hole survey “True Position” accuracy would be within .006 to .008 ! One of the current 787 Final Assembly Fuselage Section focals, Paul Baughman, leads the 787 Circ Splice Join Drilling operations. When Paul has drilled the Fuselage Circ Splice Join holes, the Counter Sink / Top OML merging Diameters need a “rapid measurement” process today.
Cite this paper
Bobby Marsh, Michael Lazar. The Boeing Company, Everett, WA. Presented at the Coordinate Metrology Systems Conference 2014, North Charleston, South Carolina, July 21-25, 2014. Coordinate Metrology Society, reference CMS-2014-005.