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MONNIER & ZAHNER KOEPFER MZ 120

Machine Details:
Stock number: 1022-2352
Machine type: Gear Hobbing Machine - Horizontal
Manufacturer: MONNIER & ZAHNER
Model: KOEPFER MZ 120
Year of manufacture: 2009
Condition: Very good
Control type: CNC
CNC control: Fanuc 18i-MB
Location: Monheim am Rhein
Country of origin: Switzerland
Availability: Immediate
Terms of delivery: Ex stock, free on truck loading bay

Technical Details:
Max. workpiece diameter: 2–45 mm
Max. workpiece length: 250 mm
Max. module: 1.5 mm
Min. module: 0.5 mm
Control: Fanuc 18i-MB
Total power requirement: kW (not specified)
Approx. machine weight: 2.2 t
Space requirements approx.: 2,100 x 1,440 x 1,700 mm

Additional Information:
The combined CNC hobbing and worm milling machine KOEPFER MZ 120 is characterised by its flexible application, especially for small module workpieces. By simply swiveling the milling spindle from the horizontal to the vertical position and selecting the corresponding operating mode on the CNC control, the worm milling machine can be converted into a hobbing machine and vice versa.

CNC control Fanuc 18i-MB (conversational/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: swivel axis of the tool spindle head (included as option)
Y-axis: shift axis (included as option)

With the following machining programs:
Worm milling
Gear hobbing
Worm hobbing
Bevel and spur gear milling
Bevel gear hobbing
Milling cycles =
Straight, helical, crowned teeth
Radial, radial-axial, climb and conventional milling
Roughing, finishing
Worm wheels
Straight bevel gears, face gear (option, only partial process)
Worms

[Equipment]
Coolant tank 300 liters KF with LNS Turbo MS 250 chip conveyor (retrofitted, year 2021)
Kraft & Bauer fire extinguishing system
Bowl feeder
Machine documentation

[Technical Data]
Workpieces:
Workpiece diameter: 2–45 mm
Max. workpiece length: 250 mm
Gear cutting length: 150 mm
Max. module in steel:
1 mm (hobbing)
1.5 mm (worm milling)
0.5 mm (bevel gear hobbing)
Tools:
Cutter diameter:
16–32 mm (hobbing)
40–63 mm (worm milling)
Machine:
Max. adjustment angle milling head:
±45° (hobbing)
±30° (worm milling)
Shifting distance:
34 mm (manual adjustment)
34 mm (CNC axis)
Collet/Drawbar W20
Max. spindle speed (workpiece spindle): 770 rpm
Laedpfx Aex Nh Stobkjk
Milling spindle drive: 0.55 kW
Max. 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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