The machine is suitable for grinding of the lateral areas of squared mono- and multi crystalline silicon work pieces in the format 125 x 125 mm and 156 x 156 mm, with four parallel arranged grinding aggregates.

Workpiece lengths of 400 up to 1000 mm can be processed.

The fully automatic grinding machine excels by following advantages:

• automatic change of format (125/156)

• equipped with two loading zones for manual and fully

automatic loading, for instance with the help

of an industrial robot

• geometric correction by parallel arrangement of grinding aggregates

• very high repeatability

• pneumatic clamping and centering of work piece

• squared ingot/brick can be processed without preparation

• automatic wheel correction

• automatic adjustment of grinding tools with block detection for optimized cycle time by using high-resolution measuring systems

• detection and evaluation of the workpiece specific quality data after grinding, for instance geometric measures, angularity etc.

• high throughput, even when a high removal is achieved by using 4 grinding discs and separate pre- and fine grinding processes for instance:

brick size as grown:    157,0 x 157,0 x 1000 mm

final brick size:              156,0 x 156,0 x 1000 mm

cycle time:                     < 21 min

machine capacity:         approx. 22.000 bricks/year

(based 24/7-production)

Quality data of workpieces:

• angularity +/- 0,02° (89,980° - 90,020°)

• geometric tolerance block width +/- 0,05 mm

• average value Ra < 0,1 µm