SPINNER Microturn GRIND

Ultra-precision Turn-Mill Center with grinding spindles

MICROTURN-GRIND is the first true combination of an ultraprecision hard turning machine and an internal and external grinding machine. With the MICROTURN-GRIND, you can not only fine-turn your workpieces with high precision in the hard condition (heat-treated), but also grind them using a 400 mm external grinding wheel and up to two high-performance internal grinding spindles. By using such a machine, you minimise stock oversizes required for grinding, reduce cycle times and optimise accuracies.

Hard machining of threads, recesses and contours is also possible thanks to the machine's full turning functionality with up to 10,000 rpm on the workpiece spindle or grinding of non-circular polygon shapes thanks to high-precision C-axis interpolation of the workpiece at creep speed.

The indexing turret mounted at the bottom of the work area allows high-precision soft and hard turning of internal and external contours on both spindle 1 and spindle 2. Milling operations with live tools and Y-axis are also possible, e.g. for soft and hard milling of surfaces, keyways and other contour elements - all during the same operation.

Usefull Workpiece sizes

Workpiece diameter

1-150 mm

Workpiece length

1-250 mm

Strokes

X-stroke

600 mm

Z-stroke

350 mm

Y-axis (Turret)

+-50 mm

Guideways

ultra precise roller guideways

Turning spindles

Spindle type 1

5,200 1/min / 16.5 kW / 110 Nm / 52 mm

Spindle type 2

6,000 1/min / 16.5 kW / 110 Nm / 52 mm

Spindle type 3

7,000 1/min, 10.5 kW / 64 Nm / 36 mm

Spindle type 4

10,000 1/min, 10.5 kW / 64 Nm / -

Clamping cylinder

hydraulic version

Maximum spindle bar capacity

36 or 52 mm

Grinding spindles

External grinding

4,000 1/min, 10.7 kW / 25.6 Nm / -

Internal grinding

90,000 1/min, 5.4 kW / 0.62 Nm / -

Turret

Number of tools

12

Toolholder

BMT45

Options available

Gang tooling

standard

Turret

Standard

Live tools

Standard

Tailstock

not available

Subspindle

optional

Y-axis

Standard for Turret

Barfeeder

Optional

Automation

Robot and integrated solutions optional

General

Dimensions (L x W x H)

3,300 x 4,100 x 2,420 mm

Weight

approx 7,100 kg