How to perform bumping programming on CNC Press brake

For big radius bends made with 'bumping' , it is possible to simple program the required data in a numerical program. First the operator can select the bend method:

0 = Airbend

1 = Bottoming

2 = Bumping

When selecting the bend method 'Bumping',  the operator can program the following parameters:

• Required bumping radius

• Total bumping angle

• The number of segments in the radius

The controller will calculate:

• The number of required bends

• The angles of the separate bends

• The backgauge positions of the separate bends

The first bend has an absolute backgauge position; the other bends will be treated as chained bends with relative backgauge positions.