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MONNIER & ZAHNER KOEPFER MZ 120

Technical Details
Maximum wheel diameter: 2–45 mm
Wheel width: 250 mm
Maximum module: 1.5 mm
Minimum module: 0.5 mm
Control system: Fanuc 18i-MB
Approx. machine weight: 2.2 t
Approx. space requirement: 2100 x 1440 x 1700 mm

Additional Information
The combined CNC hobbing and worm milling machine KOEPFER MZ 120 is characterized by its flexibility and is used for small module applications. By simply swiveling the milling spindle from the horizontal to the vertical position and selecting the relevant operating mode on the CNC controller, the worm milling machine is converted into a gear hobbing machine and vice versa.

CNC control: Fanuc 18i-MB (Dialog/ISO)
CNC axes:
X-axis: plunge axis
Z-axis: longitudinal axis
C-axis: workpiece spindle
B-axis: tool spindle
V-axis: loader axis (longitudinal)
A-axis: swivel axis, tool spindle head (included as an option)
Y-axis: shift axis (included as an option)

With the following machining programs:
- Worm milling
- Gear hobbing
- Worm hobbing
- Bevel gear and spur gear milling
- Bevel gear hobbing

Milling cycles:
- Straight, helical, crowned gearing
- Radial, radial-axial, climb and conventional milling
- Roughing, finishing
- Worm gears
- Straight-toothed bevel gears, face gear machining (option, only in dividing process)
- Worms

[Equipment]
- Coolant tank 300 liters KF with LNS Turbo MS 250 chip conveyor
- Retrofitted and year of construction: 2021!!!
- Kraft und Bauer fire extinguishing system
- Spiral conveyor
- Machine documentation

[Technical Data]
Workpieces:
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Workpiece diameter: 2–45 mm
Max. workpiece length: 250 mm
Toothing length: 150 mm
Maximum module in steel:
- 1 mm (gear hobbing)
- 1.5 mm (worm milling)
- 0.5 mm (bevel gear hobbing)

Tools:
Cutter diameter:
- 16–32 mm (gear hobbing)
- 40–63 mm (worm milling)

Machine:
Maximum adjustment angle of milling head:
- +/- 45° (hobbing)
- +/- 30° (worm milling)

Shift travel:
- 34 mm (manual adjustment)
- 34 mm (CNC axis)
Collet/Drawbar: W 20
Maximum spindle speed (workpiece spindle): 770 rpm
Milling spindle drive: 0.55 kW
Maximum spindle speed (milling spindle): 8,000 rpm
Axis drives:
- X-axis (plunge) / travel 80 mm via CNC
- Z-axis (longitudinal feed) / travel 190 mm via CNC
- C-axis (workpiece axis) via CNC
Rapid traverse:
- X-axis: 6,000 mm/min
- Z-axis: 6,000 mm/min
Hydraulic unit: 0.37 kW

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