6106100901ACCU 610 Bedknife Grinder6107953Operator ManualEnglish09 95
6106100901ACCU 610 Bedknife Grinder6107953Operator ManualEnglish09 95
6106100901ACCU 610 Bedknife Grinder6107953Operator ManualEnglish09 95
ACCU-610
AUTOMATIC
BEDKNIFE GRINDER
1
2
ACCU-610
AUTOMATIC
BEDKNIFE GRINDER
OPERATORS
MANUAL
WARNING
You must thoroughly read and understand this manual
before operating the equipment, paying particular attention
to the Warning & Safety instructions.
3 6107953 (9-95)
SAFETY INSTRUCTIONS
The Warning Symbol identifies special instruc- The Caution Symbol identifies special instructions
tions or procedures which, if not correctly fol- or procedures which, if not strictly observed, could
lowed, could result in personal injury. result in damage to or destruction of equipment.
1. KEEP GUARDS IN PLACE and in working 12. DON'T OVERREACH. Keep proper footing and
order. balance at all times.
2. REMOVE WRENCHES AND OTHER TOOLS. 13. MAINTAIN GRINDER WITH CARE. Follow
instructions in the Assembly and Service Manual for
3. KEEP WORK AREA CLEAN. lubrication and preventive maintenance.
11. SECURE YOUR WORK. Make certain that the 20. DO NOT OPERATE THE GRINDER WHEN UNDER
bedbar and bedknife is securely fastened with the THE INFLUENCE OF DRUGS, ALCOHOL, OR
clamps provided before operating. MEDICATION
4
SAFETY INSTRUCTIONS
Grinding is a safe operation if the few basic rules listed below are followed.
These rules are based on material contained in the ANSI B7.1 Safety Code for
"Use, Care and Protection of Abrasive Wheels". For your safety, we suggest
you benefit from the experience of others and carefully follow these rules.
DO DON'T
1. DO always HANDLE AND STORE wheels in a 1. DON'T use a cracked wheel or one that HAS
CAREFUL manner. BEEN DROPPED or has become damaged.
2. DO VISUALLY INSPECT all wheels before 2 . DON'T FORCE a wheel onto the machine OR
mounting for possible damage. ALTER the size of the mounting hole - if
3. DO CHECK MACHINE SPEED against the wheel won't fit the machine, get one that will.
established maximum safe operating speed 3. DON'T ever EXCEED MAXIMUM
marked on wheel. OPERATING SPEED established for the
4. DO CHECK MOUNTING FLANGES for equal wheel.
and correct diameter. 4. DON'T use mounting flanges on which the
5. DO USE MOUNTING BLOTTERS when bearing surfaces ARE NOT CLEAN, FLAT
supplied with wheels. AND FREE OF BURRS.
6. DO be sure WORK REST is properly adjusted. 5. DON'T TIGHTEN the mounting nut
EXCESSIVELY.
7. DO always USE A SAFETY GUARD
COVERING at least one-half of the grinding 6. DON'T grind on the SIDE OF THE WHEEL
wheel. (see Safety Code B7.2 for exception).
8. DO allow NEWLY MOUNTED WHEELS to run 7. DON'T start the machine until the WHEEL
at operating speed, with guard in place, for at GUARD IS IN PLACE.
least one minute before grinding. 8. DON'T JAM work into the wheel.
9. DO always WEAR SAFETY GLASSES or some 9. DON'T STAND DIRECTLY IN FRONT of a
type of eye protection when grinding. grinding wheel whenever a grinder is started.
10. DON'T FORCE GRINDING so that motor
slows noticeably or work gets hot.
5
This machine is intended for grinding the bedknife from a reel mowing
unit, ONLY. Any use other than this may cause personal injury and void
the warranty.
To assure the quality and safety of your machine and to maintain the
warranty, you MUST use original equipment manufactures replacement
parts and have any repair work done by a qualified professional.
Do not use compressed air to clean grinding dust from the machine. This
dust can cause personal injury as well as damage to the grinder.
CONTENTS
SPECIFICATIONS
DAILY MAINTENANCE
On a daily basis, clean the grinder by wiping all areas down.
On a daily basis, check coolant tray fluid level and filter sock content. Replace filter sock when full
(about 6" [15 cm"]).
On a daily basis, inspect the grinder for loose fasteners or components and tighten.
Contact your company's Maintenance Department if damaged or defective parts are found.
6
OPERATING INSTRUCTIONS
7
GETTING TO KNOW YOUR GRINDER
Fig. 1 shows the major areas of the Grinder which will BEDKNIFE SUPPORTS
be referred to in the operating instructions in the Three support assemblies secure the bedknife for
remainder of this manual. grinding. A fixed support on the left end, and an
adjustable support on the right end, have cone-
The next few pages show details of some of those shaped "centers", which fit into the mounting holes
areas and point out the various controls you will use on the ends of the bedknife. A third assembly,
when operating. also adjustable, has a magnetic support for the
middle of the bedknife. See Page 9 for details.
CONTROL BOX
The control box contains the electrical controls for the PROXIMITY SWITCHES
Grinder. Operator switches are located on the top Two movable switches determine the left and right
panel. See Page 7 for details. limits of carriage traverse. An LED inside the
switch lights when the switch actuator on the
GRINDING HEAD bottom of the carriage gets close to the head of
The grinding head consists of the grinding wheel and the switch (touching the switch head with a steel
safety guards, and the motor which drives the wheel. object will trigger the switch).
See Page 8 for details. The head can be rotated to
change between top-face and front-face grinding. COOLANT TANK
A tank which sets under the Grinder holds liquid
DRIVE CARRIAGE AND VERTICAL COLUMN coolant to be sprayed onto the bedknife during
The carriage and column provide a movable support grinding, to minimize heat buildup.
for the grinding head. Handwheels (see Page 8 for
details) adjust the grinding wheel position up and COOLANT TRAY
down, or forward and back. A large tray along the back of the Grinder serves
as a splash guard and collects the splashed liquid
TRAVERSE MOTOR AND DRIVE SHAFT for return to the Coolant Tank.
A drive shaft with a linear actuator traverses the car-
riage from side to side, to move the grinding wheel
along the bedknife. The shaft is driven by a motor at
the right end of the machine.
FIG. 1
8
GETTING TO KNOW YOUR GRINDER (Continued)
CONTROL PANEL (FIG. 2)
TRAVERSE FT/MIN KNOB
Controls the travel speed of the carriage and grinding
head, from 0 - 35 feet [0 - 10.7 meters] per minute.
9
GETTING TO KNOW YOUR GRINDER (Continued)
DRIVE CARRIAGE (FIG. 4 AND FIG. 5)
Vertical Handwheel
Moves the grinding head up and down.
Horizontal Handwheel
Moves the grinding head forward and back.
FIG. 4
GRINDING HEAD (FIG. 6 AND FIG. 7)
Coolant Nozzle
Directs a stream of coolant onto the bedknife and
grinding wheel, if the coolant system is turned on. For
precise aiming, the nozzle and connecting tubing are
completely flexible.
FIG. 7
10
GETTING TO KNOW YOUR GRINDER (Continued)
FIXED BEDKNIFE SUPPORT (FIG. 8)
Locking Screw
Bites into the upper part of the support when the tilt
lock lever is tightened, for added security. If the lock
weakens, turn the screw in further. FIG. 9
FIG. 10
11
GENERAL OPERATING INFORMATION
WHEN TO SHARPEN THE BEDKNIFE
NOTE: To fully sharpen a reel mower, you need to grind
the reel blades (using a Reel Grinder) and reshape the
cutting edge of the bedknife (using the 610 Bedknife
Grinder).
NOTE: New bedknives should be ground before being
put into use.
When the grass is not being cut cleanly, or the cut ends
of the grass appear torn or ragged, the edges of the reel
blade and bedknife have become rounded and need
sharpening. See FIG. 11-A. The purpose of sharpening
is to restore the match between the reel blades and the
cutting edge of the bedknife. See FIG. 11-B.
FIG. 11
The proper grinding angles for the two faces will vary,
depending on the reel manufacturer - always follow the
manufacturer's recommended specifications for these
angles.
Typically, however:
* There will be a 3-10 degrees clearance angle
ground on the top face. It will usually be
measured relative to the bedknife mounting
surface. See FIG. 12-A.
* There will be a 2-17 degrees clearance angel
ground on the front face. It will usually be
measured relative to a line perpendicular to the
bedknife mounting surface. See FIG. 12-B.
FIG. 12
12
GENERAL OPERATING INFORMATION (Continued)
MOUNTING A GRINDING WHEEL
To replace the grinding wheel: See FIG. 13.
1. Turn the GRINDING WHEEL switch OFF.
2. Remove two of the three screws that hold the wheel
cover guard.
3. Unscrew the mounting flange that holds the grinding
wheel - use a 3/4" open-end wrench.
4. Remove the old wheel and install the new one.
5. Screws on the flange finger tight, then tighten 1/8 turn
further with the wrench. It will self-tighten when the
motor is turned on.
13
GENERAL OPERATING INFORMATION (Continued)
DRESSING THE GRINDING WHEEL
Dress the grinding wheel whenever there is any glazing
("glazing" is the buildup of stone dust, grinding grit, and
coolant on the face of the wheel). For best results, also
dress the wheel before making the final grind.
FIG. 16 FIG. 15
CONTINUED CONTACT OF
CONCENTRATE ON SKIN MAY
CAUSE IRRITATION. WASH WITH
SOAP AND WATER AFTER CONTACT.
15
GENERAL OPERATING INFORMATION (Continued)
USING A FLARE CUP WHEEL
FOR ADDED CLEARANCE
The shape of some bed bars requires using an optional
flare-cup grinding wheel to clear the end supports. See
FIG. 20 and 21.
FIG. 21
LINK MOUNTING
Some bedknives require extra support because of the
weight of their center bracket or because of excessive
imbalance in the weight of the knife.
FIG. 22
16
OPERATING INSTRUCTIONS
ALIGNING THE CENTERS
To assure the alignment of the bedknife to the reel in the
mowing unit, this grinder has two alignment methods.
FIG. 25
17
OPERATING INSTRUCTIONS (Continued)
ALIGNING THE CENTERS (Continued)
18
OPERATING INSTRUCTIONS (Continued)
MOUNTING A BEDKNIFE FOR GRINDING
4. See FIG. 28. Insert the left end of the bedknife into
the center on the fixed (left) support. Align the right
end of the bedknife with the adjustable (right) support,
and move the adjustable support in until its center
holds the right end of the bedknife. Tighten the right
support lock lever.
19
OPERATING INSTRUCTIONS (Continued)
MOUNTING A BEDKNIFE FOR GRINDING (Continued)
20
OPERATING INSTRUCTIONS (Continued)
The reason for doing this is that many bedknives are worn
unevenly to the centers mounting, primarily due to the reel
adjustments.
FIG. 31
To get the maximum life from these bedknives and remove
the least stock, you will want to grind them using the estab-
lished surfaces as the alignment. This Touch Gage aligns
for this purpose.
21
OPERATING INSTRUCTIONS (Continued)
ALIGNING THE BEDKNIFE (Continued)
This is accomplished by feel. Touch is very sensitive and
very accurate. You can feel a difference in height of .002
inch. This accuracy is excellent as a starting location for
grinding your bedknife.
Next, move the grinding head to the left end of the bedknife.
Now adjust the vertical alignment lever on the (left) fixed
center support until the vertical pin on the touch gage is
flush. This is a course adjustment to establish the bedknife
within a reasonable window. All accurate adjustments are
done with the touch gage at the right side of the bedknife.
Next, move the grinding head and touch gage to the right
end of the bedknife. Now without moving the grinding head
infeed, adjust the vertical adjustment handle on the (left)
fixed center support until the vertical pin on the touch gage
is flush.
You must now tighten the center support magnet swivel lock
knob shown in FIG. 29. Now remove and store the touch
gage and retighten the tee knob in the motor pivot shaft.
22
OPERATING INSTRUCTIONS (Continued)
GRINDING THE TOP FACE
NOTE: The following instructions presume that you have
already studied "General Operating Information" starting
on Page 10.
23
OPERATING INSTRUCTIONS (Continued)
GRINDING THE TOP FACE (Continued)
c. If you are unable to use a top-face surface, place
the angle finder under the bedknife. See FIG. 35.
Because the angle finder has two scales (one on
each side of 0), you can calculate the grinding
wheel angle in the same way as the example
above.
2. Set the angle finder on top of the motor. See FIG. 36.
Loosen the head lock lever to move the grinding FIG. 35
head, and adjust the head so it is at the angle
determined in Step 1 above.
FIG. 38
24
OPERATING INSTRUCTIONS (Continued)
GRINDING THE TOP FACE (Continued)
Check Clearances and Set Traverse Limits
Reposition the grinding head so that the grinding wheel
just touches the top face of the bedknife and (if possible)
the wheel rim extends 1/2" [13 mm] over the bedknife top
surface. See FIG. 39.
25
OPERATING INSTRUCTIONS (Continued)
GRINDING THE TOP FACE (Continued)
Grind the Bedknife
When you are satisfied with the grinding head travel,
begin grinding:
NOTE: At this point you won't know the condition of the FIG. 41
grinding wheel after the previous job. Always dress the
wheel before grinding. See Page 12.
26
OPERATING INSTRUCTIONS (Continued)
GRINDING THE TOP FACE (Continued)
7. Continue grinding the bedknife in this manner until the rough
grind is completed.
During the grinding process, watch the spark pattern for the full
length of grind - the sparks should look equal for the full length.
8. Dress the wheel before making the final grind. See Page 12
for more information on dressing.
On the spark out passes, crank the grinding head down (counter-
clockwise) only about .001" [.025 mm] and then let the grinding
wheel spark out. For sparking out, always traverse the grinding
head 10 - 20 passes without cranking the grinding head down
further. To get the finest top-face grind, set the TRAVERSE knob
at slow speed (about 5 FT/MIN) for this final grinding sparkout.
After sparkout, check the straightness of the top face. Use the optional
Dial Indicator: See FIG. 42.
1. Hold the dial indicator's magnetic base against the left side of the
vertical column, and turn the magnet lock knob ON.
Adjust the indicator's linkages so the indicator arm is touching the outer
edge of the ground surface of the bedknife. See FIG. 42. Use the fine
adjustment screw for final positioning.
2. Reset the indicator to zero by turning the outside ring of the dial.
3. Watch the indicator while you traverse the carriage across the Grinder.
27
OPERATING INSTRUCTIONS (Continued)
GRINDING THE FRONT FACE
NOTE: On some mower bedknives, the front face is
curved and therefore may not have to be sharpened.
28
OPERATING INSTRUCTIONS (Continued)
GRINDING THE FRONT FACE (Continued)
Move the Wheel Into Position
With the vertical handwheel, crank the grinding head so the wheel
rim extends below the front edge to be ground. See FIG. 46.
Determine the high end of the bedknife, and be sure the grinding
head will clear it. Crank the head until the wheel is removing
metal lightly from the bedknife. We recommend taking off about
.002 to .003" [.05 to .075 mm] per pass. When the head is REMOVING THE BEDKNIFE
horizontal, rotating the horizontal handwheel 7 degrees will
remove about .002 per pass. Unlock the center locking knobs, and
screw back both centers.
Continue grinding the bedknife in this manner until you are satis-
fied with the front face grind. Dress the wheel when necessary If the next bedknife is the same length,
(see "Dressing the Grinding Wheel" on Page 12). just mount it and screw out the centers to
secure it. Don't move the adjustable
SHUT OFF THE COOLANT PUMP SWITCH (right) support unless the next bedknife is
BEFORE YOU SHUT OFF THE GRINDING a different length.
WHEEL, TO ALLOW THE WHEEL TO SPIN
DRY. IF THE WHEEL RETAINS TOO MUCH
COOLANT, IT WILL BE UNBALANCED
WHEN YOU AGAIN TURN ON THE
GRINDING MOTOR.
29
30