HGG SPC 1000, Руководство оператора, Страница: 95 / 169

Calibration
Kerf width
The kerf width is the thickness of the cutting beam. To maximise the accuracy of the cut an offset is
calculated which moves the cutting beam a small distance away from the cut line (this is normally half
the thickness of the beam). In this way the actual cut is exactly on the cut line (see diagram below).
Evaluating the second test piece
If the side of the test piece without a bevel is too small (by 2 mm in example 1 below), the torch has not
compensated enough for width of the beam so the kerf width must be increased (by 2 mm). If the side is
too big, the torch has compensated too much, the kerf width must be decreased.
If the side of the test piece with a bevel is too big (by 2 mm in example 1 above), the value of the VBH is
too low and must be increased. If the side is too small then the value of the VBH is too high and must be
decreased.
If all the mechanical and software calibration has been carried out as described in this appendix, the
deviation shown in example 2 above should not happen. If the two halves are out of alignment this
can only be caused by the torch being off centre in the cutting head. Either the mechanical calibration
described in ‘Setting the torch in the centre of the cutting head’ has not been carried out (correctly).
Or the torch may have collided with another component or the material. In both cases the mechanical
calibration must be repeated and new test pieces cut.
WARNING!
Test pieces will be hot due to the cutting process!
Always wear flame proof gloves and flame proof
clothing when cutting test pieces. Do not handle
the test pieces until they have cooled down or been
immersed in water.
CALIBRATION
Wall thickness
Kerf width
Cut line
Wall thickness
½ Kerf width
Cut line
Kerf width ½ Kerf width
100 mm
100 mm
100 mm
100 mm
98 mm
102 mm
Test piece 1: bevel = 0° Test piece 2: bevel = 45° Example 1
100 mm
Example 2
Mark point
100 mm
Mark point