NB 251

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NB 251

Dedicated kinematic concept for efficient Blisk roughing o-finishing.

A single adapter design solution is used for all NB machine sizes.

The effects of machine displacements due to thermal conditions can be corrected directly on the workpiece through an automated process before machining.

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Blisk machining center

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 series provides the best solution for efficiently machining 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 series. 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 achievable on the Starrag NB series. The NB series is based on the very successful Starrag LX series.

Axis configuration

Innovative Solutions

  • Contour fidelity during high-speed machining through look-ahead feature and dynamic preselection
  • Drive parameter adjustment depending on the machining
  • Control cabinet with air conditioning unit
  • Control behavior and NC path planning are developed and optimized in great detail to achieve the perfect combination of geometrical accuracy, surface quality and of course productivity.
  • Depending on the required application, the machine can be optimally configured using five settings: roughing, pre-finishing, fast finishing, finishing and super finishing.

Work piece measuring

  • Intuitive and easy to use, fully integrated into PSI+ CAM System
  • consistent integration of CAM system
  • probing
  • automatic adjustment

Highly recommended for a reliable and accurate production

  • zero reject rate

Tool measuring

  • Detection of tool breakage
  • enhanced process stability
  • avoiding machine collision

Measuring of tool length and radius

  • enhanced process accuracy
  • enhanced process stability

Detection of incorrect operation

  • avoiding machine collision

Tool magazines

  • 24 pockets disk type ( HS-A63)
  • 62 pockets chain type( HSK-A63)
  • 108 pockets chain type( HSK-A63)
  • The rotary axes are directly driven by state-of-the-art torque motors
  • Guarantees the most precise positioning
  • High torque even at low speed
  • Highest possible rigidity for maximum dynamics
  • Power transmission free of backlash and extended service intervals
  • No mechanical component wear
  • Driven tip station with controllable torque
  • Patented design of B-axis
  • Tool center point is directly on the B-axis
  • No compensation movement of the X- and Z-axis, resulting in higher process dynamics and shorter manufacturing times
  • Low moving masses and high dynamics
  • Fast connectors to reduce time for spindle change
  • Starrag made spindle
  • Monitoring of vibrations, displacements and temperatures
  • Compensation of displacements for better process reliability
  • Spindle interlock for mill-turning
  • any component requiring periodic service are easy accessible
  • replacement items e.g. filters, wipers etc are easy to access
  • machine components require service are simply to access and repair
  • safe working areas for maintenance personal e.g. platforms and attach point are provided
  • condition based machine monitoring to predict future component failure
  • Large door and viewing window
  • Easy loading with crane
  • Transportation as a complete unit, with all auxiliary units fully integrated within the machine

One key factor to lowest tool cost and highest productivity is the right process cooling. The NB machine series offers all state-ofthe- art through-spindle cooling options:

  • High pressure coolant (water-based or oil)
  • Through spindle air
  • Aerosol (minimum quantity lubrication)
  • CO2 cryogenic cooling through the spindle
  • Aerosol plus CO2 through spindle

Of course external cooling with coolant or CO2 is possible too. With these options, breakthroughs in tool life can be achieved, leading to the lowest overall cost.

The special work-piece geometries create specific demands on the clamping fixtures. Starrag has in-house specialists who develop individual clamping concepts to meet the specific requairement of blade machining. Starrag offers the following advantages:

  • A single adapter design solution for all NB machine sizes
  • Application specific clamping devieces for best in class machining performance
  • Geometric deviations between multiple fixtures can be stored in the control system.
  • Optimized swarf flow directly into the chip conveyor
  • designed for wet or dry machining
  • emission extractor
  • Starrag connect
  • rotating disk window
  • conditioning unit for compressed air
  • Camera system
  • handheld unit
  • compresser temperature cooling unit
  • increased geometric accuracy
  • remote diagnosis
  • warm up program
  • energy efficiency
  • Minimized and balanced movement of the masses
  • Short distribution of forces increases rigidity, leading to stable ratios during the machining process. These factors have been proven in real-time simulation during the machine development phase
  • All base frame components are designed using FEM analysis for maximum rigidity"

Everything from simply part storage to most complex flexible manufacturing systems – even of the largest machines. The Starrag Group makes Industry 4.0 a reality. Read more

Technical Data

Number of Spindles 1
Max. Blisk Diameter mm 750
X-Axis mm 700
Y-Axis mm 400
Z-Axis mm 400
A-Axis degree 360 endless
Swivel B-Axis degree +/-87
Linear Axes X Y Z m/min 62
Rotary Axis A U/min 200
Rotary Axis B U/min 60
Linear Axes P mm 0.009
Linear Axes Ps mm 0.0028
Rotary Axes P sec 6.0
Rotary Axes Ps sec 4.0
Power at 100% Duty kW 28
Torque at 100% Duty Nm 181
Speed U/min 18000
Tool Taper HSK-A63 (A80)
Max. Tool Weight kg 6.5
Max. Tool Diameter mm 150
Max. Tool Length mm 250
Standard / Max. number of Tools 24/62
Tool Chance Time Double Gripper sec 8
Weight kg 12000
Lenght x Width x Height mm 5000x3260x3200
Safety Concept CE-compliant
Siemens 840D

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Service Plus Package

Perfect service for perfect machines

Precondition for above-average productivity, efficiency and economy is a constant high availability of the machine. And necessary for this above all, besides innovative technology, is: A tailored service, which is perfectly coordinated to your individual requirements.

ServicePlus guarantees you machine availabilities of at least 95%!

Troubleshooting

Our call center staff immediately understands your service requirements and passes them on quickly and appropriately to our technical hotline or to the appropriate service advisor.

Starrag Hotline: +49 371 836 23 68

All Service Products

Spindle overhaul

Overhaul concepts tailored optimally to your requirements

Training courses

Efficient machine operation thanks to optimal training courses

Replacement parts

Fast and reliable supply of replacement parts due to global logistics network

Maintenance

High technical availability through preventive maintenance

Service near you

Time is money! That also applies when it concerns the service and maintenance of your machine. The Starrag Service and Logistics Centres near you have the necessary infrastructure, in order to guarantee you perfect service.

Service Contact

Partnering for Efficiency

Service Plus

Brochure download

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I have been informed that I can withdraw my consent to the processing of my personal data at any time. Withdrawal shall not affect the legality of any data processing already carried out before withdrawing my consent. By providing my consent, I confirm that I am aged 16 years or older. I hereby consent to the processing of my data. I give my consent voluntarily. I know that this declaration of consent will be saved.