Malfunctions; Malfunctions On The Drilling-Milling Machine; Malfunctions 7.1 Malfunctions On The Drilling-Milling Machine - Optimum OPTIMILL MH 28V Operating Instructions Manual

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 squeezed
out
Motor does not start
Working spindle rattling on
rough workpiece surface
Fine feed of spindle sleeve
does not work
Malfunctions
Version 1.0.1 dated 30 / 08 / 2012
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
Original operating instructions
OPTIMUM
M A S C H I N E N - G E R M A N Y
Solution

• "Switching on the drilling-
milling machine" on page 26
• 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 31
• Clean, replace
GB
MH28V
Page 53