Case Low Pressure Turbine Stator
Description
Our customer, an Asian aircraft turbine manufacturer, wanted to increase productivity by replacing a partly manual back counterbore tool. After the machining of the back spot faces, a fully manual deburring operation finished the processing of the bore.
Application details
Application details
- Bore: Ø7 mm
- Counterbore with chamfer at the inner bore edge: Ø13 mm
- Partly interrupted cut
- Material: Inconel 718
- Material thickness: 4.0 mm
- Machine: STARRAG STC1000
- Estimated production volume: 50 parts (3200 holes) / year
Proposed solution
Proposed solution
HEULE proposed its SOLO counterboring tool which is distinguished by its ease of use and its high production reliability. It allows back counterbores in single pass without requiring the workpiece to be turned. The blade is extended and retracted radially through the action of centrifugal force.
By designing a customer specific blade that applies a chamfer to the bore at the same time, there was no need anymore for the previously required additional deburring process.
Machining parameters:
Working speed: 15 m/min
Working feed: 0.03 mm/rev.
Coolant: external coolant
Customer benefits
Customer benefits
The new process reduces the machining time for one hole to 25% and the total machine occupation for one part from 3 hours down to 1 hour.
