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7
Malfunctions
7.1
Milling machine malfunctions
Malfunction
Tool "burnt".
Taper cannot be inserted in
quill.
Motor does not start.
Rattle the spindle if the work-
piece surface is rough.
The quill lever cannot be
moved.
GB
MH20V | MH20VL | MH20VLD
64
Cause/
possible effects
•
Incorrect speed.
•
Chips are not coming out of the
drilled hole.
•
Blunt tool.
•
Operating without cooling agent.
•
Remove any dirt, grease or oil
from the internal conical surface of
the spindle sleeve or the taper.
•
Defective fuse.
•
Circuit breaker
•
Upcut mill machining not possible
under the current operating condi-
tions.
•
Clamping lever of the movement
axes not tightened.
•
Tool is blunt.
•
The workpiece is not fastened.
•
Excessive slack in bearing.
•
Spindle moves up and down.
•
Fine feed of the quill is activated.
Translation of original instructions
Solution
•
Choose a different speed, excessive
feed.
•
Withdraw the tool more frequently.
•
Sharpen or replace tool.
•
Use coolant.
•
Clean surfaces well.
Keep surfaces free from grease.
"Spindle seat" on page 18
•
Have it checked by qualified personnel.
•
Perform conventional milling.
•
Tighten the clamping lever.
•
Sharpen or renew the tool.
•
Clamp the workpiece firmly.
•
Readjust the bearing slack or replace
the bearing.
•
Readjust the bearing slack or replace
the bearing.
•
Deactivate fine feed.
"Manual spindle sleeve feed with
the fine feed" on page 34
Version 2.5.1 - 2020-07-28
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