Initial situation

The task is to produce different parts of an aircraft turbine in difficult to cut titanium. A big challenge in this material is to machine the precise bores. First priority in such expensive parts is process reliability.

Material: Titanium

Metric           Imperial
Bore-Ø: 44.442 +0.025 mm 1.7497 +0.001 in
Length: 80 mm 3.1496 in


Requirements

Metric            Imperial
Surface: Ra 0.8 µm Ra 32 µin

 

 

 

 

The URMA solution

Standard RX medium reaming tool

Modular reaming tool with integrated compensation mechanism

The high precise ground carbide insert takes the responsibility for the final diameter.

Cutting data URMA machining

Metric Imperial
Cutting speed: Vc 15 m/min            SFM: 50 ft/min
Feed per tooth: fz 0.10 mm ipt: 0.004 in
Number of teeth: 10
Feed:  fv 108 mm/min ipm: 4.4 in/min
Radial stock removal: ap 0.08 mm D.O.C.: 0.003 in

Highlights

Final size responsibility is took by the reaming tool
No wear compensation needed
The surface is within measured and visual roughness specifications
No scrap parts due to highest process reliability

Do you have any questions?

Gianluca Bara - Director Sales Tools