Malfunctions; Malfunctions On The Drilling-Milling Machine - Optimum BF20 L Vario Operating Manual

OPTIMUM
M A S C H I N E N - G E R M A N Y
7

Malfunctions

7.1

Malfunctions on the drilling-milling machine

Malfunction
The drilling-milling
machine does not start
Tool "burnt".
Impossible to insert
holding taper into the
spindle sleeve.
Taper cannot be squee-
zed out
Motor does not start
Working spindle rattling on
rough workpiece surface
Fine feed of spindle
sleeve does not work
Page 60 Drilling-Milling machine
Cause/
possible consequences
• Start sequence not followed.
• Incorrect speed.
• The chips have not been removed
from 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 holding
taper.
• Optional MT3 taper seat shrinked
on morse cone.
• Defective fuse
• Climb milling machining not pos-
sible under the current operating
conditions.
• Clamping lever of the movement
axes not tightened.
• Loose collet chuck, loose drill
chuck, loose draw-in rod.
• Tool blunt.
• Workpiece is not fixed.
• Excessive slack in bearing.
• Working spindle goes up and
down.
• Fine feed is not correctly activated
• Clutch of the fine feed does not
engage, is dirty, smeared, worn or
defective
BF 20 Vario ; BF 20 L Vario
Malfunctions
Solution
• "Switching on the drilling-
milling machine" on page 28
• Have it checked by authorised
staff.
• Select another speed, feed too
high.
• Retract tool more often
• Sharpen and replace tool.
• Use coolant.
• Clean surfaces well.
Keep surfaces free of grease.
• Have the machine heat-up at
highest speed for about two minu-
tes and then try again to disas-
semble the taper.
• Have it checked by authorised
staff.
• Perform conventional milling.
• Tighten clamping lever
• Check, retighten.
• Sharpen or replace tool
• Secure the workpiece properly.
• Readjust bearing slack or replace
bearing.
• Readjust bearing slack or replace
bearing.
• "Manual spindle sleeve feed
with the fine feed" on page 32
• Clean, replace
Version 3.1.4 9 / 03 / 2010