Page 1
m
; ■ '
v?-
..V
•2
Wo F. WELLS
pi
i
AND SONS, INC
Wj
NORTH ON U.S. 131, THREE RIVERS, MICHIGAN 49093 - PHONE (616) 279-5123
:.v:
r
' _
•
SAW BLADE EyiOE AND METERING VALVE MANUAL
Adjustment Maintenance, and Replacement [Pasts
Saw Blade Guide Type 440S50
Metering Waive Types 010(300 (Manual Control)
01020S (Remote Control)
_
INDEX
A. Guide Adjustment
B. Metering Valve Adjustment
C. Preventive Maintenance
D. Spare Parts for Minimum Downtime
E. Problems and Suggestions
F. Replacement Parts
1
PAGE
2
4
5
6
7
7
Page 2
A. BLADE GUIDE ADJUSTMENT -
TYPE 440850
Adjustment of the saw blade guides is one of the
most critical on your machine as it plays an im
portant part
is
VERY IMPORTANT that a NEW BLADE be
INSTALLED and PROPERLY TENSIONED
before adjusting the blade guides.
TO ADJUST THE BLADE GUIDE ROLLER
CLEARANCE, refer to Fig. 1. Loosen the 1/4-20 x
1
” and 1 3/4
in
the overall machine performance. It
” hex cap screws holding the carbide
N
~u
V.
RETAINING
SCREWS
,w-: ;v
Ji
7
*
J
FIG. 2
faced guide blocks #292340 in place and slide them
out away from
mounted on shoulder bolt #292190 and threaded
directly into the housing #292360. This roller is
rigidly mounted and non-adjustable. The opposing
roller (Fig. 3) is mounted on a cam shoulder bolt
#292350 and an adjustment of
be made by loosening the 1/2-20 hex nut on the top
(Fig. 4) and rotating the bolt. These rollers should
be adjusted just tight enough so that grasping the
blade in the area between the guide
band wheel and oscillating it across the vertical
the
blade. One guide roller (Fig. 2) is
the
roller centers can
and
its adjacent
FIG. 4
center will not permit movement of
cutting area between the two guides. Any
movement of the blade transmitted through the
rollers into the cutting area should be removed by
adjusting the cam bolt. It is also very important
that after this adjustment has been completed you
can manually push the blade down partially out of
the guide and when released it will partially return
of its own accord. CAUTION: If these two guide
rollers are adjusted too tightly it will cause the
blade to ‘‘
metal fatigue and blade breakage. Guide rollers
adjusted too tightly will also cause the metering
valves controlling the cutting head feed to become
inoperative or very erratic, resulting in extreme
feed problems.
TO ADJUST THE CARBIDE AUXILIARY
GUIDE BLOCKS, refer to Fig. 1. These blocks are
held in position by 1/4-20 x 1
hex head cap screws. Loosen both cap screws and
back the guides out sufficiently so that any dirt or
debris between the guides and the blade can be
removed. Using your thumb on one guide block and
your index finger on the other, lightly press the two
2
snake
” through the rollers, resulting in
the
blade in the
” and 1/4-20 1 3/4
”
Page 3
opposing guides against the saw blade (Fig. 5). At
this point re-tighten the 1/4-20 hex head cap
screws. Check the blade for freedom of movement
vertically by forcing it partially down out of the
guide. When released, it should return partially
back up into the guide, providing that the blade is
properly tensioned and the roller guides are not too
tightly adjusted.
When these carbide guides are properly adjusted,
the blade should move freely in the vertical
direction with no visible side clearance discernible.
If they are adjusted too tightly to the blade,
hampering its vertical travel, the operation of the
metering valve will be affected, resulting in poor
feed characteristics of the cutting head.
PARALLEL AND
THE BLADE GUIDES. In order to make an
accurate adjustment of the blade guides it is first
necessary to check the stationary vise jaw for
squareness on the saw bed (Fig. 6). Place a com
bination square on the machine bed using the front
edge of
and adjust
true 90° setting. The guide settings will be trued to
the vise face, so it is very important that the vise
face be at right angles to
the wide bed top plate in the vise slide way,
the rear stationary vise jaw to obtain a
VERTICAL
the
saw bed.
ALIGNMENT OF
FIG. 7
With a properly tensioned new blade on the
machine, place the combination square against the
front face of the blade very lightly so the blade will
not be deflected and slide the square against the
rear vise jaw (Fig. 7). If the blade and vise jaw are
not at right angles, refer to Fig. 8. Cam bolt
#292410 on the lower end of each guide arm can be
adjusted to bring the blade into parallel alignment
with the saw bed and at right angles to the work
vise. Loosen the 1/2-13 x 1 1/4" hex head cap screw
(Fig. 8) and the 1/2-20 hex nut on the #292410cam
bolt. By turning the cam bolt the lower end of the
blade guide casting #292390 or #292395 can be
moved in or out to bring the blade into parallel
alignment with the saw bed. The question at this
point is which guide should be moved in which
direction to keep the blade in as straight a line as
possible between the lower edge of the two blade
carrier wheels. To find out, individually loosen the
hand knob clamps which hold the guide arms to the
guide beam, so that guide arm movement caused by
the
tensioned
& B). Then adjust the guide castings to minimize
this deflection and bring the blade into parallel
alignment with the saw bed and at right angles to
the work vise. After re-tightening the 1/2-20 hex
2 nut on the cam bolt and the 1/2-13 x 1 1/4
blade may be observed (Fig. 8, Ref. A
FIG. 8
” hex
Page 4
head cap screw, recheck the blade against the
stationary vise jaw to assure proper alignment is
still intact.
FIG. 9
%-13
HEX NUT
B. METERING VALVE ADJUSTMENT,
TYPE 010660 AND 010295.
This is an extremely simple adjustment to make,
yet it is the one that creates the biggest problem.
Refer to Fig. 11 and note that the adjustable stop
block
can be
rotated
to
any of four positions to limit
the descent of the carbide faced pressure pad
top edge of the saw blade. This block should be
rotated to the lowest setting possible without the
carbide pressure pad resting on the blade rollers
and carbide faced
must contact the guide
rather than
rollers.
inserts. The adjustable stop block
casting
the
carbide pressure pad contacting the
as
shown in Fig. 12
on the
At this point, place the blade gauge furnished with
the machine on the saw blade (Fig. 9) adjacent to
the stationary vise jaw and lower the cutting head
until the cutting edge of the blade is near the work
bed top. Place the combination square blade across
the
bed
top and move the base of the square against
the face of the blade gauge. If the gauge is not in
vertical alignment with the square an adjustment
can be made with blade screw #292270. On newer
machines, first
then turn the adjusting screw clockwise to cause
the top end of the blade gauge to move away from
the vise jaw or turn the screw counterclockwise
causing the top end of the blade gauge to move
towards the vise jaw. After this has been done on
the guide arm adjacent to the stationary vise jaw,
repeat the operation on the guide arm adjacent to
the moveable vise jaw. If a large correction must be
made
on the second
of the first guide
alternately, check and adjust each guide arm as
necessary until the blade
true vertical position.
loosen the 1/2-13 hex nut (Fig. 10),
FIG. 10
guide
arm, re-check the setting
arm. If large corrections are made
at either guide
arm
is in a
FIG. 12
Lower the cutting head slowly (with a low cutting
force of 20 to 40 pounds) and as the head lowers,
pry up the bearing arm as shown in Fig. 13 with a
screw driver or similar tool. Note the clearance
between the stop block and guide casting (Fig. 13)
just at the point where the valve has been closed by
lifting up the bearing arm and the cutting head
stops its descent. This clearance should be .060
.090”. If it is more than .090”. lengthen the linkage
4
” to
I
Page 5
<4
FIG. 13
c
D
A
B
(bri
vd
FIG.
15
FIG. 14
by loosening the locknut (Fig. 14) and turning the
threaded stud counterclockwise. Re-tighten the
locknut and check the clearance by repeating the
procedure. Repeat if necessary. If the clearance is
less than .060”, loosen the locknut (Fig. 14) and
turn the threaded stud clockwise to shorten the
linkage. Re-tighten the locknut and recheck the
clearance. Repeat if necessary.
After adjustment has been completed, check to be
sure the back edge of the saw blade closes the
metering valve before it
If the upper edge of the blade contacts the guide
body before it closes the metering valve, all cutting
force control is lost and the machine will overfeed,
stripping the teeth from the blade.
On Series I machines the manual control metering
valve Type 010660 may require adjustment of the
minimum cutting force. With reference to Fig. 15,
turn the cutting force thimble "D
into the valve body as shown. Next, adjust the self
locking nut “A” up or down on the threaded stem
”B” until the spring “C” is just touching at each
contacts the guide
” completely up
casting.
end. Then turn nut “A” to tighten the spring 1/2
turn. This adjustment establishes the minimum
cutting force. If nut “A” is mis-adjusted to over
tighten the spring, the minimum cutting force is
increased and can become high enough to strip
teeth from the blade.
C. PREVENTIVE MAINTENANCE
A MONTHLY CHECK should be performed on the
metering valve, guide rollers and carbide inserts as
follows:
(1.) Open
can descend slowly. Now pry up the blade back-up
slipper as illustrated in Fig. 13. The arm should
raise .060
stop the cutting head descent. If this test stops and
holds the cutting head from descending the
metering valve is functioning properly.
(2.) In some systems the cutting head will slowly
rise when the metering valve is closed and held
closed. This is normal and acceptable.
(3.) A monthly check on the guide rollers and
carbide inserts can easily be performed by twisting
the blade near the saw guides.
carbide inserts, when adjusted properly, will not
allow any movement of the blade in
when twisted, but still must be loose enough to
allow the blade to slide through as outlined in
Section A.
(4.)
shown in Fig. 9.
the
cutting head control valve so the head
” to .090
Check the blade to be sure it is vertical as
” to close the metering valve and
The
guide rollers and
the
cutting area
(5.) These checks cover the most common main
tenance adjustments on a band saw machine. If
they are not performed regularly, good blade life
and straight cuts cannot be achieved. They take
only a few minutes and will assure that your
machine will perform well.
5
Page 6
D. SPARE PARTS FOR MINIMUM
DOWN-
TIME
QUANTITY
2
4*
4*
4*
8*
PART
NUMBER
292290
292340
292420
901504
901204
DESCRIPTION
Carbide Backup
Slipper
Carbide Side
Insert 1
” Blade
Carbide Side
Insert 1-1/4
Side Roller
1
” Blade
Side Roller
1-1/4
” Blade
” Blade
!
*Order size required for your machine.
6
#
Page 7
E. PROBLEMS AND SUGGESTIONS
(1.) SAW NOT CUTTING STRAIGHT FROM
TOP
TO
BOTTOM
A. The most common cause is loose blade guide
rollers (Fig. 3) which allow the blade to “
I
from a vertical position, causing crooked cuts.
See Section A for adjustments.
B. The saw blade guide casting is rotated so the
blade is not held in a vertical position. See
Section A for adjustment.
C. Long work piece is not being supported
horizontally and level through the machine.
D. Check metering valve as outlined in Section C.
(2.) SAW NOT CUTTING STRAIGHT FROM
SIDE TO SIDE
A. The saw vises are not
illustrated in Figs. 6 and 7. See Section A for
adjustment.
B. Long work piece is not being positioned
squarely to the saw blade and flat against the
saw vise.
at
90° with the blade as
lean
F. REPLACEMENT PARTS
A. Required for any part order
1. Saw model.
2. Serial number.
B. Parts that can normally be obtained from local
”
mill supply stores, etc., are not listed.
C. Parts not listed: Give a complete detailed
description of what it is, where it is used, and
what it
does
in
operation.
enough information to supply the part.
D. This parts list does not show all the parts that
make up
the common parts that may require
replacement.
Also some parts may not be shown due to
machine design changes. When this occurs,
order parts as described above.
the
machine. We have tried to show all
This will often give us
(3.) POOR BLADE LIFE
A. Metering valve is not closing completely,
allowing the cutting head to slowly bleed down,
overfeeding the blade. See Section B for ad
justment.
B. Blade guide rollers or carbides are too tight
against the blade, preventing the blade from
moving up and down freely enough to operate
the metering valves.
C. Metering valve is dirty inside
close. Test as outlined in Section C.
(4.) CUTTING HEAD WILL NOT LOWER
The metering valve is held closed because the
A.
guide rollers are too tight and will not permit
the blade to move downward, opening the
valve.
B.
Metering
stopping the valve from opening. See Section B
for adjustment.
Metering valve is held closed by dirt or other
C.
foreign material
will normally be lodged between the valve bore
and valve spool, causing it to become
inoperative.
valve control rod is adjusted too long,
so that it cannot open. The
so that is cannot
dirt
7
Page 8
manual control metering
010328
010329
010660
440890
440900
440920
440960
907011
NOTE A
NOTE B
NOTE C
NOTE D
ADJUSTING NUT
PRESSURE ROD
METERING VALVE
SHELL
SPACER
ROD
BRACKET
SPRING
1/4-20 xl—l/2 FLAT HEAD
5/8-1 lx
5/16-18 SELF LOCKING NUT
5/16-18 HEX NUT ----------------
I"
HEX HEAD SCREW
VALVE PARTS
SCREW
3
T
HOSE FROM
CUTTING HEAD DESCENT
CONTROL VALVE
note a
00
O
T
440900
NOTE B
■440960
010660
\
I
TO TANK
r
Y
)
—
✓
&
J
o
----
|\
1
1
*■
{Til
\
V
I
—
O
/! n
3
440890
7
/
I
J
/
010328
907011
NOTE C
010329 —
NOTE D
440920
I
1
1
\
I
r
MANUAL CONTROL METERING VALVE ASSEMBLY
*
Page 9
■*»
LARGE HOSE
FROM CUTTING HEAD
DESCENT CONTROL VALVE
010385
010295
292380
SMALL HOSE
FROM CUTTING FORCE
CONTROL VALVE
CONNECTING
HOSE
m
0
CO
REMOTE CONTROL METERING VALVE PARTS
010295
010329
010385
292380
440920
NOTE D
NOTE E
METERING VALVE
PRESSURE ROD
INLINE FILTER
SPACER
ROD
5/16-18 HEX NUT
1/4-20x2-1/2 HEX HEAD SCREW
REMOTE CONTROL METERING VALVE ASSEMBLY
RETURN
TO TANK
NOTE E
010329
NOTE D
440920
0
Page 10
NOTE A
NOTE B
292410
NOTE
NOTE D
NOTE B
912111
o
911504
C
r
292280
[
-n\T
-900211
-NOTE L \
LEFT GUIDE ASSEMBLY
NOTE M
\
------
*
NOTE E
440885
NOTE F
NOTE G
NOTE H
NOTE J-
RIGHT GUIDE ASSEMBLY
Page 11
r\x
A
{
440930
NOTE N
292180
■*
n
I
440920
NOTE R
440910
292180
900015
292290
.440930
NOTE
R
ii 5
N
I
NOTE E
292280
NOTE O
NOTE P
NOTE F
PARTS COMMON TO RIGHT AND LEFT GUIDE ASSEMBLIES
Page 12
GUIDE ASSEMBLY PARTS
292180
292280
292290
292410
440885
440910
440920
440930
900015
900211
911504
912111
NOTE A
NOTE B
NOTE C
NOTE
NOTE E
NOTE F
NOTE G
NOTE FI
NOTE J
NOTE
NOTE M
NOTE N
NOTE O
NOTE P
NOTE R
D
L
PIN
COOLANT SPOUT
CARBIDE BACK-UP
CAM BOLT
WASHER
PIVOT ARM
ROD
STOP BLOCK
3/16
SPRING WASHER
COOLANT SHUT-OFF VALVE
HOSE FITTING
1/2-13 x 1-1/4
1/2-20
CASTINGS AND BOLT ASSEMBLY NO. 440853
(PARTS NOT SOLD SEPARATELY)
CASTINGS AND BOLT ASSEMBLY NO. 440854
(PARTS NOT SOLD SEPARATELY)
NO. 10-32 x 1/2 SOCKET HEAD CAP SCREW
CARBIDE GUIDES - ORDER CORRECT WIDTH:
292340
292420
BEARINGS - ORDER CORRECT WIDTH-
901504(1 PER BOLT) FOR 1
901204 (2 PER BOLT) FOR 1-1/4
STRAIGHT BEARING BOLT - ORDER CORRECT WIDTH-
292190
292440
CAM BEARING BOLT - ORDER CORRECT WIDTH-
292350
292430
1/2-13 HEX NUT
1/2-13 x 1-1/4 SQUARE HEAD BOLT
1/4-20
1/4-20 x 1
1/4-20 x 1-3/4
NO.
” DIA. x 3/4
HEX NUT
x
1-1/4 HEX HEAD SCREW
” HEX HEAD SCREW
10-32 x 5/16 SOCKET SET SCREW
” ROLL PIN
” HEX HEAD SCREW
FOR 1
” BLADE
FOR 1-1/4
FOR 1
FOR 1-1/4
FOR 1
FOR 1-1/4
” HEX HEAD SCREW
” BLADE
” BLADE
” BLADE
” BLADE
” BLADE
” BLADE
” BLADE
W. F. WELLS & SONS, INC., NORTH ON U.S. 131, THREE RIVERS, MICHIGAN 49093
Copyright 1974
12
Phone (616) 279-5123
0
Loading...