US 11,865,647 B2
Utilization of CNC machining in composite part rework
Hongda Zhang, Winnipeg (CA); Yee-Ying Chung, Winnipeg (CA); Steven Dysievick, Winnipeg (CA); and Michael Victor Forster, Winnipeg (CA)
Assigned to The Boeing Company, Chicago, IL (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Mar. 13, 2020, as Appl. No. 16/818,825.
Prior Publication US 2021/0283702 A1, Sep. 16, 2021
Int. Cl. B23K 7/06 (2006.01); B23Q 17/24 (2006.01); B23Q 15/26 (2006.01); B23Q 17/20 (2006.01)
CPC B23K 7/06 (2013.01) [B23Q 15/26 (2013.01); B23Q 17/20 (2013.01); B23Q 17/2471 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for repairing a composite structure, the method comprising:
defining a rework zone on the composite structure;
identifying a rectangular shaped theoretical scarfing bottom surface for the rework zone from a model of the composite structure;
selecting a scarf repair model based on a maximum longitudinal distance between two extremities of the composite structure and an aspect ratio of the rework zone, wherein the aspect ratio of the rework zone is a ratio of a width of a longitudinal edge of the rework zone and the maximum longitudinal distance between the two extremities of the composite structure;
identifying an actual scarfing bottom surface in a local axis system for the rework zone;
modifying parameters for a rework program for an automated scarfing tool based on deviations between the theoretical scarfing bottom surface and the actual scarfing bottom surface; and
removing plies in the rework zone using the automated scarfing tool.