CNC – Controlled Universal Gear Hobbing Machine

should be retrofitted with a new CNC-Control

Max. gear Æ (without counter bracket) 1000 mm
Max. gear Ø with counter bracket 750 mm
Hobbing length (increased 200 mm) 700 mm
Module, max. 14
Max. Workpiece Weight 3.150 kg

Minimum no. of teeth (index gear box ratio 1:144) 6
Distance between toolcenter and workpiece center 60 -625 mm
Mounting height in counter bracket, approx. 1.100 mm

Table Ø x Table bore 780 x 180 mm
Table speed 0,7 - 16 rpm
Hobbing slide swivelling approx. 240 °
Hob Ø x length 210 x 240 mm
Hob mandrel Ø x taper sk50
Hob shifting, max. approx. 200 mm
Hob spindle speeds, infinitely variable 25 - 235 rpm
Feed range, axial, infinitely variable / quick feed 1 – 750 /750 mm/Min.
radial, infinitely variable / quick feed 1 – 250 /250 mm/Min.
tangential, infinitely variable / quick feed 1 – 140 /280 mm/Min.

Spindle drive, approx. 30 kW
Total electrical load, approx. 40 kW - 380 V - 50 Hz
Weight of machine, approx. 13,000 kg

Accessories / Special Features
* Machine is actually equipped with an old CNC Control made by SIEMENS, model 3 G
However this control unit is not working because the processor was taken out.
Therefore the machine would be ideal for reconditioning. Electronic Handwheel.
The CNC-Control allows all Hobbing operations also suitable for tapered and crowned Gears
* Universal hobbing head with ISO 50 Taper and Automatic hob shifting.
* Hob Shift adjustment can be preset by the CNC Control.
* 2-cut device for roughing and finishing and Automatic run-out device for higher cutting values
* Radial / axial quick feed and table quick feed.
* Differential drive for helical gears.
* 4 hob mandrels, various sizes. Continuously lubricated counter bearing.
* Coolant intermediate tank mounted on the machine’s backside. Table rinsing pipes
* Workpiece counter bracket, which can be retracted approx. 150 mm to increase WP swing-Ø,
eqquipped with a tailstock for center and as a 3 roll stead rest for supporting long shafts.
* Backlash free hobbing head, separate Cooler for the Hydraulic Oil, Amperemeter for Hobdrive,