NUOVA ELETTRONICA DSP LASER, Инструкция по эксплуатации

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DSP LASER
18 DSPLSR01EN
Warning :
This function must be used only when necessary for the type of work
to do. It is then responsibility of the employer to check the correct
use of the function and to avoid abusing it.
Here below, some examples are reported which could require the
use of blanking.
•
Bend of the boxes with special shapes
The bending of the classic box depends on the correct positioning of the piece both
against the backgauges and centred with respect to the punch. This centring
operation generally requires the positioning just before the punch touches the sheet.
For this reason, it is appropriate the command circuit of the press-brake is realized in
such a way that the operator can select the function of automatic stop of the mobile
table in the speed change point. The piece can be then brought to the current bending
position.
A possible reason for the activation of the blanking function is related, for example, to
a shape of the piece such to forbid the insertion of the piece itself between the tools
when the punch is still at the speed change point.
Obviously these operating modes can be exploited to execute bends only along the
edge of the raised side and not inside the box. In this case, the raised box would
intercept the central part of the field, which can be inhibited only during the slow
speed closing movement.
•
Little size bends
The shape of the detection area has been designed in the rear part just to limit the
interference with the backgauges. This does not avoid that the final position or the
shape of the backgauge could hide the rear part of the detection area.
•
Little size pieces
The shape of the detection area has been designed in the front part just to limit the
interference with the operator. However, a very little size of the piece can cause the
operator’s fingers hide the detection area.
The central part of DSP LASER remains active during the high speed closing movement in
any operating mode. The hiding of the central area must always cause the stop of the press
when the closing speed is greater than 10 mm\s.
For this reason, the central detection area must be slightly moved with respect to the tip of
the punch towards the rear part of the press.
Residual risk :
The blanking of part of the detection area can cause residual risks
(see chp. 11
Residual risks ) due to the shape of the tool and of the
piece under processing (e.g. side of the box). In fact, potential
dangers of squashing between the part of the unprotected tool and
the piece under processing or the die or the backgauges arise.
The operator must be informed about these risks. The department
personnel has the task to evaluate, according to the shape and the
installation of the dies and to the bending sequence, the risks and to
inform, as consequence, the operator, before enabling the operating
mode by key selector.