Troubleshooting
01.00|ROTA THW vario |en-US
49
Troubleshooting
Segmented mandrel ROTA THW vario D
Problem
Possible causes
Remedy
Eccentric dimensional
deviation on the workpiece
Concentricity error of the
segmented mandrel
Check concentricity at the
outer taper of the mandrel
and correct if necessary
Not enough clamping force Oversized workpiece
Insufficient hydraulic
pressure at clamping
cylinder
Defective clamping cylinder
or blocked clamping tube
Replace with suitable
segmented clamping sleeve
Check the machine-side
hydraulic unit
Contact the machine
manufacturer
Dimensional deviations on
the workpiece
Dirt between segmented
clamping sleeve and
mandrel taper
Dirt between clamping bolt
and segmented clamping
sleeve
Remove and clean
clamping bolt and
segmented clamping sleeve
Error in shape of the
workpiece
Shaped starting material
has been elastically
deformed during clamping.
After machining, the
workpiece relaxes and
returns to its original shape
Use of starting material
with a reduced shape error
Impressions on the
clamping face
Pointed or linear workpiece
clamping
Dimensional difference
between clamping
diameter and workpiece
bore too large.
Swap in suitable
segmented clamping sleeve
Axial run-out error on
workpiece
Dirt on the mounting
surfaces
Clean the dirty surfaces
Workpiece is not clamped Clamping bolt is not turned
on block
Dirt between mandrel body
and ejector ring
The rotary drivers of the
ejector ring do not engage
in the grooves
Rotate clamping bolt on
block
Clean mandrel body and
ejector ring
Reposition segmented
clamping sleeve
10
10.1
Summary of Contents for ROTA THWvario
Page 60: ...Assembly drawing 60 01 00 ROTA THW vario en US Assembly drawing ROTA THW vario 215 62 13 13 1 ...
Page 61: ...Assembly drawing 01 00 ROTA THW vario en US 61 ...
Page 62: ...Assembly drawing 62 01 00 ROTA THW vario en US Segmented mandrel ROTA THW vario D 13 1 1 ...
Page 63: ...Assembly drawing 01 00 ROTA THW vario en US 63 Collet chuck ROTA THW vario F 13 1 2 ...