SAMAG MFZ 2-2 CNC milling machine

SAMAG MFZ 2-2 CNC milling machine was built in 2005 in Germany. This specially designed machine for the automatic machining of workpieces made of metallic materials has been equipped with two high-performance spindles and two work tables with a rotary axis, allowing for simultaneous machining of a part and loading/unloading of another. This solution maximises production efficiency and shortens production times, making the machine significantly distinguishable from other milling machines on the market.

The machining, characterised by high quality and precision, is performed in automatic mode or in the setting up mode, using rotary tools taken from a capacious magazine. During its service life, the SAMAG twin-spindle milling machine has worked around 40000 hours and has been continuously serviced. The total weight of the machine is approximately 22 tonnes.

Technical specifications of the SAMAG MFZ 2-2 milling machine

General data

• number of axes: 3 + 1 rotary axis
• feed travel in X axis: 450 mm
• feed travel in Y axis (working stroke): 500 mm
• feed travel in Y axis (total stroke including tool change): 775 mm
• feed travel in Z axis: 450 mm
• feed rates in the X,Y,Z axis: 1-10000 mm/min
• rapid traverse in the X,Y,Z axis: 60000 mm/min
• X,Y axis acceleration: 0.6 g
• Z axis acceleration: 0.8 g
• feed force in the X,Y,Z axis: 8000 N
• repeat accuracy: 0,002 mm
• operating hours: approx. 40000 h
• hydraulic system pressure: 160 bar
• capacity of hydraulic oil tank: 100 l
• operating pressure of pneumatic system: 6 bar
• power consumption: 72 kVA
• power supply: 3×400±10% V; 50 Hz
• ambient temperature: 15-35°C
• dimensions of gravity belt filter (L x W x H): 2450 x 1505 x 1850 mm
• dimensions of chip conveyor (L x W x H): 2885 x 1095 x 1829 mm
• weight of empty chip conveyor: 620 kg
• weight of empty clean water tank 930 kg
• machine dimensions (L x W x H): 7000 x 4000 x 3700 mm
• total weight of machine: approx. 22000 kg

Spindle

• number of spindles: 2
• spindle: GMN HCS 220-16000/28
• maximum rotational speed: 16000 rpm
• minimum rotational speed: 4200 rpm
• power (60/100% ED): 28/28 kW
• sleeve diameter: 220 mm
• distance between spindles: 450 mm
• tool holder: HSK A63
• tool clamping system: OTT
• weight of spindle: 110 kg

Tool magazine

• capacity: 100 pcs.
• maximum tool diameter: 80 mm
• maximum tool length: 320 mm
• maximum tool weight: 8 kg

Automatic table change (W axis)

• swivel displacement: 0-180°
• dividing angle: 3°
• dividing accuracy: ± 3″
• swivel time 180°: 4.5 s
• face plate/thrust bearing diameter: 500/345 mm
• maximum drive/thrust bearing rotational speed: 15/20 rpm
• moment of inertia: 140 kgm2
• permissible tilting moment: 8000 Nm
• permissible drive/thrust bearing tangential moment: 10000/5000 Nm

Rotary table axes (A1/A2 axis)

• dividing angle: 3°
• dividing accuracy: ± 3″
• swivel time 180°: 3.5 s
• face plate/thrust bearing diameter: 345 mm
• maximum rotational speed: 20 rpm
• moment of inertia: 20 kgm2
• permissible tilting moment: 3000 Nm
• permissible drive/thrust bearing tangential moment: 5000 Nm

Workpiece holder (B axes)

• indexing angle (serration): 5°
• indexing accuracy (serration): ± 3″
• NC indexing positioning accuracy: ± 15°
• face plate diameter: 210 mm
• maximum rotational speed: 20 rpm
• maximum tilting moment (with hydraulic gripping device): 1000 Nm
• maximum tangential moment (with hydraulic gripping device and serration clamped): 1400 Nm
• axial load: 5 kN

Equipment of the SAMAG machining centre

• CNC control: SIEMENS SINUMERIK 840D
• rotary table (2 pcs)
• disc tool magazine
• central lubrication
• chip conveyor
• cooling unit: DK 160-V/SO
• clamping hydraulics
• pneumatic control / support check
• ARTIS process control
• rinsing pistol