NARGESA MP3003 CNC, Instruction Book, Page: 50 / 112

ANEXO 1. SOFTWARE ESA S630 A32
Correcting a radius bend
Whenever a radius bend is realized it is unlikely that you will obtain a correct bend at first try: this
imprecision depends on the fact that the angles that have to be bent to create the rolling are opened too far
(e.g.: 170ø) and it is difficult to obtain correct bends with these angles.
In order to obtain a correct rolling it is necessary to measure the difference between the angle of the radius
obtained and the desired angle: the difference calculated must be divided equally on all the bends.
Example
Let's suppose we have to create a rolling with an angle of 90º in which is it necessary to make 15 bends
equal to 170º; if the rolling obtained is 112.5º we must perform the following:
112.5 - 90 = 22.5º (difference between the real and the theoretical angles)
22.5 / 15 = 1.5º (correction to be applied for each bend)
We must apply a correction of 1.5º in the rolling pitch which will be repeated 15 times.
Definition of a Dutch folding (or hemming bend)
In the window for setting the bends it is possible to define a Dutch folding bend:
enter 0.0 in the Y1 angle field, and the arrival value of the ram will be calculated by keeping account of the
depth of the V-die, the height of the V-die for hemming and the thickness of the piece; the position of the
axis X is set at the minimum height reachable by the axis; the R axis is positioned by bearing in mind that
the die is open.
For ensuring greater work programming speed a Dutch folding can be defined by directly entering the Editor
page and pressing the [Dutch Folding] function.
Correcting a Dutch folding
To correct a Dutch folding it is not possible to change the value of the angle, but it is necessary to change
the numeric value present in the Field L.D.C. of Y1.
If the bend is hemmed too much it will be necessary to increase this value.
The Height Y2 will subsequently be changed.
Otherwise it will be necessary to:
- Enter in the Corrections page by pressing
- Press the
[Coeff. corrections] key
- The data entered in the Dutch folding field will be directly added or subtracted from the L.D.C. of both the
Y. This value is linked to the machine and not to the program. To cancel the correction press the key
[Undo
correct.].