mandoteX – Trouble shooting
9.2 Trouble shooting table
Fault
Possible cause
Fault correction
Corrected by
Clamping
device does
not open or
release stroke
is insufficient
Fouling between the draw
mechanism and the
clamping unit
Remove the clamping unite,
move the drawtube back and
clean the coupling area [see
section »Disassembling the
clamping unit«].
Specialist
Dimensional deviation of
the draw tube adapter
Check the dimensions of the
draw tube adapter and
correct them if necessary.
Specialist
Clamping force
is too low
Work piece is over-dimen-
sioned
Replace with a suitable
clamping unit
Specialist
Insufficient hydraulic
pressure on the clamping
cylinder
Check the machine side
hydraulic aggregate
Hydraulic
specialist
Defective clamping
cylinder or blocked draw
tube
Contact the machine
manufacturer
Machine manufac-
turer
Compression springs
fatigued [at permanent
tension]
Replace compression
springs
Specialist
Eccentric
dimensional
deviation on
the work piece
Concentricity error of the
segmented mandrel
Check the concentricity at
the taper of the segmented
mandrel, correct if necessary
[see section »Checking and
adjusting the face run and
the concentricity«].
Specialist
Dimensional
deviation on
the work piece
Contaminated coupling
area
Clean the coupling area of
the clamping device
[see section »Cleaning«].
Specialist
Contaminated clamping
taper
Disassemble the clamping
unit and clean the clamping
taper
[see section »Cleaning«].
Specialist
Formal defect
on the work
piece
Elastic deformation of
feedstock that is subject
to formal defects. After
machining the workpiece
returns to its original form.
Use feedstock with fewer
formal defects.
If technically justifiably
reduce the clamping
pressure.
Specialist
Order h49 7144.907-333
59