Corvus Ngb Corvus Hintergrund
Oscillation axis

Highly dynamic linear motor axis for profile grinding on broach tools and automotive body panel dies

Axle drive

Recirculating ball screw or highly dynamic linear motors

Motor spindle

Grinding spindle power 46 kW peak, highest power for the production of large tools with high chip volumes

Long tools

Thanks to the 1250 mm to 3100 mm X-stroke, the largest of tools can also be processed.

corvus NGB BPP

The 6-axis CNC profile grinding machine for the production of profiles on broach tools or the profiling of automotive body panel dies.

The 6-axis CNC grinding machine corvus BPP has a highly dynamic linear motor driven vertical oscillating axis. The corvus BPP represents the solution for all profiling tasks in which the grinding wheel must oscillate in a vertical direction. The zero points on the tools are found automatically by the high-precision 3D probe.

Applications for the corvus BPP are the regrinding of automotive body panel dies with torus radius wheels using oscillating grinding approach as well as the profiling of broach tools.

Accessories for individual expansion of the application spectrum and for increased productivity:

  • X-stroke of 1250 mm up to optional 3100 mm
  • Direct measurement system in all axes
  • Linear motors in all axes
  • Direct drive motor for cylindrical grinding tasks up to 1250 Nm torque
  • Dressing unit for dressing and sharpening profiles
  • Manual or hydraulic tailstock
  • Manual or hydraulic steady rest
  • Magnetic chuck
  • Collet chucks, clamping mandrels
  • Coolant filtration system
  • Exhaust air filter
  • CO2 extinguishing system

Technical data


X: 1250, 2100, or 3100 mm longitudinal axis, linear motor, resolution 10 nm

Y: 400 mm , transverse slide, recirculating ball screw or linear motor, resolution 50 nm or 10 nm

Z: 400 mm , vertical axis, recirculating ball screw or linear motor, resolution 50 nm or 10 nm

A: ∞ ISO 50 tool carrier, resolution 0.0001°

W: 100 mm stroke, vertical oscillating axis, linear, resolution 10 nm

C: 360°, rotation of the grinding head, direct measurement system, resolution 0.0001°


FANUC 31i-B5, 6 controlled axes

19” colour monitor with keyboard and touch screen, USB 3.0

Grinding head:

Double ended grinding spindle, direct drive, water cooled

10 kW (100 %), 13 kW (60 %) for grinding wheels ø 30 mm to ø 250 mm, 1000 to 12,000 rpm, HSK 50


X-stroke 1250 mm: L 3285 mm, weight 13,500 kg

X-stroke 2100 mm: L 4135 mm, weight 17,000 kg

X-stroke 3100 mm: L 5365 mm, weight 20,500 kg


X-stroke 850: L 2885 mm, weight 12,000 kg

X-stroke 1250: L 3285 mm, weight 13,500 kg

X-stroke 2100: L 4135 mm, weight 17,000 kg

X-stroke 3100: L 5365 mm, weight 20,500 kg