Portable 2 Axis Milling Machine for CFRP

Paper #:
  • 2012-01-1879

Published:
  • 2012-09-10
DOI:
  • 10.4271/2012-01-1879
Citation:
Richards, B. and Turnbull, C., "Portable 2 Axis Milling Machine for CFRP," SAE Technical Paper 2012-01-1879, 2012, https://doi.org/10.4271/2012-01-1879.
Pages:
5
Abstract:
As part of a Composite Wing Manufacture Program, Electroimpact was asked to design and develop a small portable milling machine for machining CFRP. The machine needed to be light so it could be lifted by two operators, robust to the production environment, and stiff enough to allow it to cut a 15 mm deep 3/8\mi slot through composite material (CFRP), in one pass, with no delamination. The machine also needed to be capable of performing a 30 mm deep finishing cut, in one pass, with 3 μm or better surface finish. Specialist Polycrystalline Diamond (PDC) roughing cutters were developed for the cutting process to reduce cutting loads and vibration while maximizing cutter life. The machine also needed to be capable of cutting along a 2 axis path. Electroimpact successfully introduced the machine in to the production environment in October 2011, within a 12 month development window. PCD Cutters were developed with the assistance of Cruing UK Ltd who supplied the final roughing and finishing cutters.
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