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Starrag - Model NB 151 -5-Axis Blisk Machining Center
The NB 151 from Starrag represents a highly versatile 5-axis machining center specifically engineered for the efficient production of blisks, impellers, diffusors, and nozzle guide vanes. This machine is designed for machining components made from challenging materials like titanium and nickel-based superalloys, making it ideal for gas turbine applications. The machine incorporates an advanced kinematic concept, enabling precise operations despite thermal or centrifugal distortions. This is achieved through the integration of real-time spindle expansion measurement and compensation. Starrag's precise machining strategies cater to both roughing and adaptive machining processes, ensuring low cycle times and minimal scrap rates. The NB 151 machine offers high dynamic finishing capabilities with optimal airfoil contact, and its adaptive machining approaches ensure integrity even on precision-forged blades. With a substantial tool storage capacity and advanced cooling options, the NB 151 meets the high demands of blisk production through rigorous process control and automation capabilities.
Lower unit costs…
Dedicated kinematic concept for efficient Blisk roughing or finishing.
Reliable production...
Expansion of the spindle through thermal drift or centrifugal forces can constantly be measured and compensated for by direct measurement.
Efficient machining strategies…
The NB 151 offers a superior accessibility for all kinds of multi-blade parts, be it blisks, impellers, diffusors or nozzle guide vanes.
No matter if it is called a «Blisk» (bladed disk) or an «IBR» (integrally bladed rotor), no matter if it is single stage or multi stage, Starrag’s dedicated machine concept of the NB 151 provides the best solution for efficiently machining of these parts. Blisks made from Titanium, Nickel-based superalloys and the Blisks made of blade steels for stationary gas turbines triggered the development of the NB 151. The challenges posed by the thin, unstable airfoils are easily met by the new productive manufacturing approaches that Starrag provides. For all the necessary manufacturing operations Starrag provides the benchmark: Efficient roughing for Blisks machined from solid, adaptive machining for friction welded Blisks, high dynamic finishing of the airfoils in point contact. Shortest cycle times and zero scrap rate production are what the Starrag NB 151 stands for. The NB 151 is based on the very successful Starrag LX series.
Technological Competence:
- Optimized kinematic concept
- Expansion of the spindle through thermal drift or centrifugal forces is constantly measured and compensated for by direct measurement
- The effects of machine displacements due to thermal drift can be corrected directly on the workpiece
- Non-machining time («air cut») on forged blanks is eliminated
- Adaptive machining of blade edges and snubbers on precision-forged blades that blend seamlessly to the finished airfoil