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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: Fanuc 18i-MB
Machine weight approx.: 2.2 t
Space requirement approx.: 2100 x 1440 x 1700 mm

Additional Information
The combined CNC hobbing and worm milling machine KOEPFER MZ 120 stands out for its versatile application, especially in the small module range. By swiveling the milling spindle from horizontal to vertical position and selecting the corresponding CNC operating mode, the machine can be switched from worm milling to hobbing 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 longitudinal axis
- A-axis: Tool spindle head swivel axis (included as an option)
- Y-axis: Shift axis (included as an option)

Available Machining Programs:
- Worm milling
- Gear hobbing
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- Worm hobbing
- Bevel gear and spur gear milling
- Bevel gear hobbing

Milling cycles:
- Straight, helical, crowned toothing
- Radial, radial-axial, climb and conventional milling
- Roughing, finishing
- Worm wheels
- Straight bevel gears, face gearing (optional, only in partial process)
- Worms

[Equipment]
- 300 liter coolant tank with LNS Turbo MS 250 chip conveyor
- Retrofit and year of construction 2021!
- Kraft and Bauer fire extinguishing system
- Spiral conveyor
- Machine documentation

[Technical Data]
Workpieces:
- Workpiece diameter: 2–45 mm
- Max. workpiece length: 250 mm
- Gear length: 150 mm
- Max. 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:
- Max. milling head swivel angle:
- +/- 45° (hobbing)
- +/- 30° (worm milling)
- Shift travel:
- 34 mm (manual adjustment)
- 34 mm (CNC axis)
- Collet/Retraction arbor: W 20
- Max. workpiece spindle speed: 770 rpm
- Milling spindle drive: 0.55 kW
- Max. milling spindle speed: 8000 rpm
Axis drives:
- X-axis (plunge), 80 mm travel via CNC
- Z-axis (longitudinal feed), 190 mm travel via CNC
- C-axis (workpiece axis) via CNC
Rapid traverses:
- X-axis: 6000 mm/min
- Z-axis: 6000 mm/min
- Hydraulic unit: 0.37 kW

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