OPTIMUM
M A S C H I N E N - G E R M A N Y
6
Malfunctions
6.1
Drilling machine malfunctions
Malfunction
Noise during work.
Bit „burnt"
Drill point runs off, drilled hole
is not circular.
Drill bit defective.
Drill is running non-round or
shaking
The drill chuck or the taper
mandrel cannot be inserted.
Motor does not start.
Precision of the work deficient
Drilling spindle sleeve does not
return to its initial position
GB
B17Pro basic
Page 58
®
Cause/
possible effects
•
Spindle runs dry.
•
Tool blunt or incorrectly clamped.
•
Incorrect speed
•
Chips are not coming out of the
drilled hole.
•
Blunt drill bit.
•
Operating without cooling agent.
•
Hard fiber in the wood or length of
the cutting spirals and/or angle on
the drill unequal.
•
Drill bit is bent.
•
No base / support used.
•
Drill bit is bent.
•
Bearings worn down in the spindle
head.
•
Drill is not correctly clamped.
•
Drill chuck defective
•
Dirt, grease or oil on the taper inside
of the drill chuck or on the taper sur-
face of the drill spindle
•
Motor defective, possibly starting
capacitor defective
•
The operator's main fuse has been
triggered.
•
Heavy and unbalanced or deformed
work-piece.
•
Inexact horizontal position of the
work-piece holder.
•
Spindle return spring
Translation of the original instructions
Solution
•
Grease spindle
•
Use new tool and check tension
(fixed setting of the bit, drill chuck
and taper mandril)
•
Choose a different speed, excessive
feed.
•
Retract the drill bit from the bore hole
more often.
•
Sharpen the drill bit or insert new drill
bit.
•
Use coolant.
•
Use a new drill bit.
•
Place a piece of wood underneath
the workpiece and fasten this to the
workpiece.
•
Replace drill bit
•
Have the bearings in the spindle
head replaced.
•
Clamp the drill bit properly.
•
Replace the drill bit chuck.
•
Clean surfaces well.
•
Keep surfaces free from grease.
•
Have it checked by qualified person-
nel.
•
Balance the piece statically and
secure without straining
•
Adjust workpiece-holder
•
"Spindle return spring" on page 57
Version 1.0
Malfunctions
2019-01-17