V0215, 10.20
Upper hemming width
The width of the segment in the upper part of the die used for the hemming action.
Hemming load opening
The opening height of the die in the opened status to place the product with the hem
bend.
Hemming resistance
Maximum allowable force on the tool during hemming.
Lower hemming width
The width of the segment in the lower part of the die used for the hemming action.
Lower part width
The width of the lower part of the die.
Lower part height
The height of the lower part of the die.
Inside hemming die type
For the different types of available inside hemming dies the specific operation mode can
be selected:
- Spring Opened This die has an internal spring to push the die upwards as start
position.
Pre-Bend: For the pre-bend the sheet will be placed on top of the die
in this opened position and the final bend position is calculated such
that the required pre-bend angle will be reached. The backgauge
height (R-axis) will be calculated on the level of the opened die so
that the product can be placed against the backstop.
Hem-Bend: For the hemming operation the pre-bent product will be
placed in the hem opening of the die and the depth calculation of the
pressing beam will be such that the die is pressed down until the
hem bend is finished. The calculation will take twice the sheet
thickness into account. It is possible to program an additional hem
opening parameter in the specific bend parameters as offset on the
final hem position.
- Open & Locked This die is standard locked in a high position for normal bending and
pre-bend angles. The lock mechanism must be removed to use the
hemming facility.
- Normally Closed This die is in a closed, low position for normal bending and pre-bend
angles, and should be activated to get the hemming action.
Adjust decompression
To enable the addition of the hemming load opening value to the decompression
distance of a normal air bend cycle. This parameter is only available for spring-opened
hemming dies. Default: off.
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