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7
Malfunctions
7.1
Malfunctions on the milling machine
Malfunction
The milling machine does not
start
Tool "is burning".
Spindle taper cannot be
inserted into the quill.
It is not possible to push-out
the taper.
Motor does not start
Working spindle rattling on
rough workpiece surfaces
Automatic feed is not
functioning.
EN
MH25SV
64
Cause/
possible effects
•
Power-on sequence not observed.
•
Incorrect speed.
•
Chips are not coming out of the
bore hole.
•
Tool blunt.
•
Operating without cooling agent.
•
Remove any dirt, grease or oil
from the internal conical surface of
the quill or the grip cone.
•
Taper sleeve has shrunk onto the
cone.
•
Defective fuse.
•
Climb milling machining not possi-
ble under the current operating
conditions.
•
Clamping lever of the movement
axes not tightened.
•
Loose collet chuck, loose drill
chuck, loose drawbar.
•
Tool is blunt.
•
The workpiece is not fastened.
•
Excessive slack in bearing.
•
Working spindle moves up and
down.
•
End position of the axis has been
reached.
•
Limit position switch soiled.
Translation of original operating manual
Solution
•
Resetting an emergency stop
situation on page 28.
•
Power failure, Restoring readi-
ness for operation on page 28
•
Switching on the milling
machine on page 27
•
Select another speed, feed too
high.
•
Pull out tool more often.
•
Sharpen or replace tool.
•
Use cooling agent.
•
Clean the surfaces thoroughly.
Keep surfaces free of grease.
•
Let the machine run at highest
speed for two minutes to warm it
up and attempt to remove the
taper again.
•
Removal on page 30
•
Have it checked by authorised per-
sonnel.
•
Perform conventional milling.
•
Tighten clamping lever.
•
Check, re-tighten.
•
Sharpen or replace tool.
•
Clamp the workpiece firmly.
•
Readjust bearing slack or replace
bearing
•
Readjust bearing slack or replace
bearing
•
Resetting the automatic feed
on page 28
•
Clean contactless position swit-
ches.
Page 39
Version 1.0.4 - 2020-12-15
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