WINTER TIMBERMAX 4 – 23 ECO
41
No.
Troubles
Possible causes
Trouble-shooting method
12
Scratc
hes
appear
on the rubber wheel
Sharp surface of the raw wood
block
Properly
reduce
the
pressure of the out-feed
wheel
13
General adjustment is
correct, but defects still
appear on workpiece
Machine table and the
reference guide are severely
worn out
Change the table and the
reference guide (select
wear-proof
materials
with hardened surface .)
11.2
Troubles and trouble-shooting methods of cutter blocks
TABLE 10
No.
Troubles
Possible causes
Trouble-shooting method
1
The cutter severely
worn out
The
cutter
material
not
appropriately selected
Select cutter materials that
match the timber type (high
speed steel HSS, Stellite alloy
steel (Stellite), Hard metal
alloy steel (Hardmetal) )
2
Cutter edge broken
a)
Too high Temperature when
re-sharpen.
b) Too big back angle
a)
Select suitable grinding
wheel when re-sharpening
the cutter, slow down the
speed of sharpening and
pay attention to the cooling
of the cutter.
b) Decease the back angle.
3
Cutter
rotates
unsteadily
a)
No dynamic balancing on cutter.
b)
Not balanceable blades assembly.
c)
Different types of blade assembled
together (different weight).
d)
Scrap remaining between the cutter
pan and root of the cutter-shaft.
a)
Do a dynamic balance test
on the cutter.
b)
Make blades balanceable
c)
Assemble the blades of
the same type. (of same
weight)
d) Clean the entire joint before
assembling.
4
Cutter
cannot
be
assembled onto the
cutter-shaft
Distortion on the inner hole which
is caused by the loose and tight
differ of lockbolts on the cutter
Average the force of all
locking nuts.
