TOX PRESSOTECHNIK CEP400T - Page 102

Troubleshooting
102
TOX_Manual_Process-monitoring-unit_CEP400T_en
Fault Cause Analysis Measure
Press force too
high Display
error code
<MAX>)
Sheets too
thick
Generally affects all
points
Measure sheet thick-
nesses and compare
with tool passport.
Error following batch
change
Use specified sheet
thicknesses.
Tolerance when in-
creasing individual
sheet thickness > 0.2 -
0.3 mm
If the sheet thicknesses
are within the permissi-
ble tolerances, draw up
a batch-based testing
plan.
Sheet strength
increased
Generally affects all
points
Compare material des-
ignations for the sheets
with TOX
®
- tool pass-
port.
Error following batch
change
If necessary: Perform a
hardness comparison
measurement.
Use specified materials.
Draw up a hardness-
based testing plan.
Number of
sheet layers
too high
Generally affects all
points
Compare number of
sheet layers with the
specifications in the
TOX
®
- tool passport.
One-off occurrence as
a result of incorrect op-
eration
Repeat joining process
with the correct number
of sheet layers.
Deposits in the
die
Only affects individual
points
Clean affected dies.
Oil, dirt, remains of
paint, etc. in the ring
channel of the die
If the problem contin-
ues, dismantle and
clean the die; polishing
or chemical etching
may be carried out fol-
lowing discussions with
TOX
®
PRESSOTECH-
NIK.
Sheet surface
is very dry,
rather than be-
ing lightly oiled
or greased
Check the state of the
sheet surface
Ensure sheet surfaces
are oiled or greased.
Change to the working
process (e.g. un-
planned washing step
prior to joining)
If necessary: Draw up a
special testing program
for dry sheet surface.
Warning: Check strip-
ping force on the punch
side.
Sheets / piece
parts not cor-
rectly posi-
tioned
Damage caused to
piece parts by tool or
stripper
Repeat joining process
with the piece parts cor-
rectly positioned.
If necessary: Improve
fixing means for the
piece part.
Incorrect tool
combination
installed
Control dimension 'X'
too small after tool
change
Compare tool designa-
tion (imprinted on the
shaft diameter) with the
specifications in the
TOX
®
- tool passport.
Die press-through
depth too small
Point diameter too
small
Punch diameter too
large (> 0.2 mm)