Solutions for cost-effective and high-quality machining of aerospace wings

The main challenges for machining these types of structural components are hole making, edging and surface machining.
Tooling solutions for aerospace wings
Composite solutions – product offer for composite machining
Machining solutions dedicated to specific composite materials as well as operations and demands are becoming an increasingly important competitive factor.
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CoroDrill® 863 with -O geometry – solid carbide drills for high-quality hole making and longer tool life in composites
Hole making in CFRP (carbon fiber reinforced polymer composite) – facts and demands
- Minimal delamination of fibers
- Good surface finish and dimensions
- Unidirectional or woven layers
- High rate of material removal
Solutions
- CoroDrill® 863 with -O geometry, standard diameter range 3–9.5 mm (0.118–0.374 inch)
- Drill depth 3–10 × drill diameter
Benefits
- Enhanced tool life – more feet of composite material drilled
- Minimal delamination
- Excellent hole finish and tolerance
Cutting data
- Visit CoroPlus® ToolGuide for precise cutting data suggestions

CoroMill® Century – surface machining of carbon fiber
Facts and demands
- Primary structure carbon fiber
- Minimal splintering of fibers and delamination
- Good surface finish and dimensions
Solutions
- CoroMill® Century with PCD inserts
- Cutter: R590-04C3-11M
- Inserts: R590-1105H-PS2-NL CD10
Cutting data
- Visit CoroPlus® ToolGuide for precise cutting data suggestions
Learn more about CoroMill® Century light cutting face mill for high-speed finishing

CoroMill® 390 – Sturtz milling: profiling of carbon fiber
Facts and demands
- Tilting of tool 2–10 degrees – high rpm and feed rate
- Primary structure carbon fiber
- Hand-held pneumatic machine design
- 2D and 3D feature solutions
- Good surface finish and dimensions
Solutions
- CoroMill® 390
- Cutter: R390-032A32-11H
- CD10 PCD inserts (3 mm (0.118 inch) modified radii)
Cutting data
- Visit CoroPlus® ToolGuide for precise cutting data suggestions

Ball-end scanning vs Sturtz
32 mm (1.260 inch) diameter tools used with the same cutting data.
| 32 mm ball | 32 mm Sturtz | |
| Surface speed, m/min (ft/min) | 2,011 (6598) | 2,011 (6598) |
| RPM | 20,000 | 20,000 |
| Feed/tooth, mm/min (in/tooth) | 0.12 (0.005) | 0.12 (0.005) |
| Table feed, mm/min (in/min) | 12,000 (472.441) | 12,000 (472.441) |
| No. of flutes | 5 | 5 |
| Step over, mm (in) | 3.52 (0.139) | 11 (0.433) |
| Pass/sq meter | 284 | 91 |
| Time for 1 sq meter | 23.7 | 7.6 |
| Over 3 times faster generation of surface |
Smaller ball-end tools are typically used, resulting in even greater productivity when switching to Sturtz techniques.