Schmidt PressControl 3000 - Idle-stroke monitoring

7 Press processes
SCHMIDT
®
PressControl 3000 – V1.3
30
9.17 18.34 27.52 36.39
s[mm]
2.00
1.50
1.00
.500
0.0
F[kN]
W1
Figure 7-4: Stroke tolerance in working stroke with overcompensation
If the return stroke tolerance in the diagram is set above s
max
, it is (by
definition) in the working stroke. Consequently, “OK parts” will be interpreted
as “Not OK parts” and assigned accordingly.
Since the working stroke will change to the return stroke very rarely at a
fixed position, it may be difficult to find a suitable position for a tolerance in
the return stroke.
Figure 7-5: Different positions of s
max
1 Change from the working stroke to the return stroke (Pressing 1)
2 Change from the working stroke to the return stroke (Pressing 2)
Idle-stroke monitoring
This function allows you to monitor whether a max. allowed force (F
max
) has
not been reached or exceeded up to a certain stroke (s
x
).
If in a press process the max. allowed force is reached, an error message
will appear, and the press will move back to the TDC position.
s
max
1
2
F
s