Description and fields of application for the equipment
Function description during bending of flat sheet metal
bending of flat sheet metal
At start of stroke
fast speed
Principle of function
bending of flat sheet metal
The V opening of the die must be covered with the lateral die cover. This is necessary because
the receiver element E2 must be interrupted before the SP signal ( blanking signal ) is activated.
The SP signal must be active before any of the receiver elements E1 or E3 – E6 is interrupted by the
sheet or the lateral die cover.
The machine can still move in high speed for a maximum of 800ms. After this time the machine
must move in slowspeed ( <= 10mm/s ).
-If the SP signal is not active all receiver elements E1 – E6 must be free. During the following closing stroke only E1 und
E3 – E6 must be free.
-If the SP signal is active the receiver element E2 must be interrupted. Attention, if SP is active but E2 is free, closing
stroke is not possible (e.g. lateral die cover is missing or not in correct position)
-If the SP signal is active and at least receiver element E2 is interrupted, AKAS will turn off the SGA
output (highspeed enable). Only a slowspeed stroke is allowed now.
-If the SP signal is not active and at least one of the receiver elements E1 or E3-E6 is interrupted (E2 does not matter
now) it is possible to start a slowspeed stroke by pressing the footpedal two times.
(SGA will turn off. E.g. for a bend inside a closed box)
-If the SP signal is not activated the receiver elements E1 and E3-E6 must be free.
-If receiver element E2 is already interrupted and the SP signal is just activated, the receiver elements E3 and E4
must stay free for at least 27ms. (Important: E2 must be interrupted before SP is activated)
-If receiver element E2 is already interrupted and SP will be activated, the machine can continue to move in high-
speed for up to 800ms. Before the 800ms are exceeded the machine must change to slowspeed. (Muting will only
be activated in slowspeed)
1.Release the closing movement by activating the foot pedal. Receiver E1 to E6 are activated.
2. Press brake closes in fast speed (> 10mm/s)
Receiver element E2 are deactivated, E1,E3 bis E6 activated (protection)
3. Position for AKAS blanking reached (SP signal is changing from SP = 0 to SP = 1):
The receiver elements E1, E5 and E6 will be muted. E4 will stay active for about 27ms
(max allowed travel distance 4mm). E3 will stay active.
4. After reaching the change-over point from fast speed to slow speed (= 10 mm/s):
(Distance between punch and sheet 0-6mm depending on the stopping distance of the machine)
Receiver element E3 will be muted, so the complete AKAS receiver is muted now.
5. All receiver elements are muted and the muting lamp is on. The bending procedure is finished.
(The fast speed mode and the slow speed mode are limited of about 2 min.)
3
3.3
Doku Nr. 1379 Stand 27.1.2017 /Aui
Fig.10/ 1
FIESSLER
E L E K T R O N I K
E1
E2
bendingline
E4 E3 E6 E5
flat sheet
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