Vertical tail
The main challenges for machining these types of structural components are the hole making, edging and surface machining.
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Holemaking: 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: 60m/min
- fn: 0.05mm/rev
Benefits:
- Good hole quality
- Reduced drill grab eliminating splintering and delamination
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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 10mm with 2 cutting edges
Cutting data
- Speed: 10.000 rpm, tabel feed: 3200mm/min
- Fz: Roughing: 0.03 – 0.08mm/tooth
- Fz: Finishing: 0.02 – 0.04mm/tooth
| CoroMill Plura |
Holemaking 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 6.35mm
- N20C diamond coating
Cutting data
- VC: 150m/min
- fn: 0.06mm/rev
Benefits
- Excellent hole quality with no splintering
- 800 hole tool life
- Good hole production economy |
 | CoroDrill 854 |
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