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6
Malfunctions
6.1
Damage to the drilling-milling machine.
Malfunction
The drilling-milling machine
does not start
Tool "burnt".
Impossible to insert grip cone
into the spindle sleeve.
It is not possible to push-out
the taper.
Motor does not start
Working spindle rattling on
rough piece surfaces
Fine feed of the spindle
sleeve does not work
Version 1.1.8 - 2021-7-29
Cause/
possible effects
•
Power-on sequence ignored.
•
Incorrect speed.
•
Chips do not come out of the bore
hole.
•
Tool blunt.
•
Operating without cooling agent.
•
Remove any dirt, grease or oil
from the internal conical surface of
the spindle sleeve or the grip
cone.
•
MT4 taper is shrinked on the
Morse taper.
•
Defective fuse.
•
Climb milling machining not
possible under the current
operating conditions.
•
Clamping lever of the movement
axes not tightened.
•
Loose collet chuck, loose drill
chuck, loose draw-in rod.
•
Tool is blunt.
•
The workpiece is not fastened.
•
Excessive slack in bearing.
•
Working spindle goes up and
down.
•
Fine feed is not correctly activated.
•
Coupling of the fine feed does not
cam-in, is soiled, blurred, worn,
defective
Translation of original instructions
Solution
•
"Operating panel MP4P" on
page 90
•
Have it checked by authorised
personnel.
•
Select another rate, feed too high.
•
Pull out tool more often.
•
Sharpen or replace tool.
•
Use cooling agent
•
Clean surfaces well
Keep surfaces free of grease.
•
Let the machine run at highest
speed for two minutes in order to
warm it up and then retry to
disassemble the taper.
•
Have it checked by authorised
personnel.
•
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
•
"Spindle sleeve feed with the
manually fine feed" on page 97
•
Clean, replace.
MB4P ǀ MB4PV
EN
113
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