Optimum OPTImill BF 20V - Malfunctions; Malfunctions on the drilling-milling machine

Version 4.0.2 dated 2019-4-3Page 68 Translation of the original instructions
BF20V | BF20L | BF20LDGB
BF20V_BF20L_BF20LD_GB_7.fm
OPTIMUM
MASCHINEN - GERMANY
®
8 Malfunctions
8.1 Malfunctions on the drilling-milling machine
Malfunction Cause / possible effects Solution
The drilling-milling machine
does not start
• Power-on sequence ignored. •  "Switching on the drilling-milling
machine“ on page 28
• Have it checked by authorised per-
sonnel.
Tool "burnt". • Incorrect speed.
• The filings have not been removed
from the bore hole.
• Tool blunt.
• Operating without cooling agent.
• Select another rate, feed too high.
• Pull out tool more often.
• Sharpen or replace tool.
• Use cooling agent.
Impossible to insert grip cone
into the spindle sleeve.
• Remove any dirt, grease or oil from
the internal conical surface of the spin-
dle sleeve or the grip cone.
• Clean surfaces well
Keep surfaces free of grease.
It is not possible to push-out
the taper.
• Optional MT3 taper is shrinked on the
Morse taper.
• Let the machine run at highest
speed for two minutes in order to
warm it up and then retry to disas-
semble the taper.
Motor does not start • Drill chuck protection not closed
• Defective electrical / electronic
• Check whether chuck protection is
closed and possibly close.
• Have it checked by authorised per-
sonnel.
Working spindle rattling on
rough piece surfaces
• 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 blunt.
• The workpiece is not fastened.
• Excessive slack in bearing.
• Working spindle goes up and down.
• 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
Fine feed of the spindle sleeve
does not work
• Fine feed is not correctly activated.
• Coupling of the fine feed does not
cam-in, is soiled, blurred, worn, defec-
tive
•
 "Manual spindle sleeve feed
with the fine feed“ on page 32
• Clean, replace.
The spindle only rotates if the
on button remains pressed
continuously.
• Replacement of control electronics
and old single-channel machine with
new control electronics.
• Img.6-6: “Q1.7“ on page 47