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Vertical tail

The main challenges for machining these types of structural components are the hole making, edging and surface machining.

 

 

​Application examples

 
 

​Hole making: hand drilling in CFRP

Facts and demands
  • Carbon fibre
  • Reduced burr on exit
  • Good surface finish and dimensions
  • Hand held pneumatic machine design
Solutions
  • PHT hand held drill
  • Right hand cut drill point
  • Left hand helix for drill stabilization
Cutting data
  • VC: 60 m/min (196.85 ft/min)
  • fn: 0.05 mm/rev (0.002 in/rev)
Benefits
  • Good hole quality
  • Reduced drill grab eliminating splintering and delamination

 

​Edging of carbon fibre

Facts and demands
  • Carbon fibre skin
  • Minimal splintering
  • Good surface: Ra value of 1.25 μm

Solutions
  • CoroMill Plura engineered solutions
  • 1: Diamond coated carbide cutter
  • 2: PCD brazed cutter
  • Cutter diameter 10 mm (0.394 in) with 2 cutting edges
Cutting data
  • Speed: 10.000 rpm, tabel feed: 3200 mm/min (125.984 in/min)
  • Fz: Roughing: 0.03–0.08 mm/tooth (0.001-0.003 in/tooth)
  • Fz: Finishing: 0.02–0.04 mm/tooth (0.001-0.002 in/tooth)

 

 

CoroMill Plura

​Hole making in CFRP

Facts and demands
  • Fibre rich carbon fibre - Unidirectional
  • Minimal splintering of fibres
  • Good surface finish and dimensions
  • CNC machining centre
Solutions
  • CoroDrill 854 drill point, diameter 6.35 mm (0.250 in)
  • N20C diamond coating
Cutting data
  • VC: 150 m/min (492.12 ft/min)
  • fn: 0.06 mm/rev (0.002 in/rev)
Benefits
  • Excellent hole quality with no splintering
  • 800 hole tool life

 

 

CoroDrill 854

 
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