Aerospace


Thrust fitting


The thrust fitting is normally produced in titanium and is located between the wing and the engine. The main challenge is the machining with long overhang tools.







Finishing external circular ramping
Finishing external circular ramping

Compared to internal circular milling/ramping: The tool centre feed, vf, is increased instead of reduced. The radial depth, ae, becomes much smaller when milling externally, therefore, a higher cutting speed can be used. hex is calculated in the same way as for edging. The programming technique is otherwise very similar to internal milling of holes.
CoroMill®790 with GC1010 with high ramping capability generates straight shoulders with minimal mismatch and very low cusps when passes are repeated.


More information:
Read more about CoroMill® 790


2D profile plunging

Working with the z-axls is not a first choice when conditions are stable. But conditions are not always stable and plunging is a good solution for weaker set-ups and long overhangs. To maintain a good degree of productivity, it is important to be able to take a reasonable step over. Coromant plunge cutter has maximum step of 22 mm.



= program table feed
= rapid traverse
2D profile plunging



2D profile milling long overhang
2D profile milling long overhang

The Coromant Capto® modular tool holding system enables tools to be assembled to the required length, while maintaining high stability and smallest run-out. Keep the tooling assembly as rigid and short as possible. Choose the largest possible adaptor diameter/size. Use Coromant Capto adaptors with oversized cutters to avoid reduction adaptors. For small milling cutters, use a tapered adaptor if possible.

More information:
Read more about Coromant Capto®
modular tool holding system


Animation:
Capto forces
Capto modular
2D profile milling long overhang



CoroMill® vs cobolt long edge

Material: Titanium alloys - Ti6AI4V
Component: Structural
Coolant: External

The CoroMill 690 achieves 136% higher metal removal rate vs competitor. The operator said "Besides the tremendous productivity increase we also have eliminated regrinding of the competitor cutter"
Competitor
Sandvik Coromant
Tool:Cobolt long edge - 6 teethCM 690 Dia 50 - 3 teeth
Insert:CompetitorR690 - IC 10
Grade:CompetitorS30T
vc:25 m/min55 m/min
fz:0.07 mm0.15 mm
vf:67 mm/r158 mm/r
ap/ae:50/15 mm 50/15 mm
Q:50 000 cm3/min118 000 cm3/min


© Sandvik CoromantLatest update: 05/10/2010 09:14:13 AM

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