Malfunctions; Milling Machine Malfunctions; Malfunctions 6.1 Milling Machine Malfunctions - Optimum OPTImill MH 25V Operating Manual

OPTIMUM
M A S C H I N E N - G E R M A N Y
6

Malfunctions

6.1

Milling machine malfunctions

Malfunction
Milling machine cannot be
switched on
Tool "burnt".
Taper cannot be inserted in
quill.
The taper cannot be pushed
out.
Motor does not start.
Rattle the spindle if the work-
piece surface is rough.
GB MH25V
Page 78
Cause/
possible effects
• Power-on sequence not observed.
• 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.
• Taper sleeve has shrunk onto the
cone.
• Defective fuse.
• Upcut mill machining not possible
under the current operating condi-
tions.
• Clamping lever of the movement
axes not tightened.
• Loose collet, loose drill chuck,
drawbar loose.
• Tool is blunt.
• The workpiece is not fastened.
• Excessive slack in bearing.
• Spindle moves up and down.
Original operating instructions
Solution

• "Resetting an emergency stop
situation" on page 67.

• "Power failure, Restoring
readiness for operation" on page
67

• "Switching the milling machine
on" on page 67
• Choose a different speed, exces-
sive feed.
• Withdraw the tool more frequently.
• Sharpen or replace tool.
• Use coolant.
• Clean surfaces well.
Keep surfaces free from 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 69
• Have it checked by qualified per-
sonnel.
• Perform conventional milling.
• Tighten the clamping lever.
• Check, re-tighten.
• 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.
Version 1.0.1 dated 2015-12-17