Grizzly H7506 Horizontal/Vertical Rotary Indexing Table Owner Manual

Grizzly H7506 Horizontal/Vertical Rotary Indexing Table Owner Manual
MODEL H7506
HORIZONTAL/VERTICAL
ROTARY INDEXING TABLE
w/CHUCK
OWNER'S Manual
Copyright © MAY, 2009 By Grizzly Industrial, Inc.
Warning: No portion of this manual may be reproduced in any shape
Or form without the written approval of Grizzly Industrial, inc.
(FOR MODELS MANUFACTURED SINCE 1/09) #ddts11548 printed IN CHINA
This manual provides critical safety instructions on the proper setup,
operation, maintenance and service of this machine/equipment.
Failure to read, understand and follow the instructions given in this
manual may result in serious personal injury, including amputation,
electrocution or death.
The owner of this machine/equipment is solely responsible for its
safe use. This responsibility includes but is not limited to proper
installation in a safe environment, personnel training and usage
authorization, proper inspection and maintenance, manual availability
and comprehension, application of safety devices, blade/cutter integrity, and the usage of personal protective equipment.
The manufacturer will not be held liable for injury or property damage
from negligence, improper training, machine modifications or misuse.
Some dust created by power sanding, sawing, grinding, drilling, and
other construction activities contains chemicals known to the State
of California to cause cancer, birth defects or other reproductive
harm. Some examples of these chemicals are:
•
•
•
Lead from lead-based paints.
Crystalline silica from bricks, cement and other masonry products.
Arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you
do this type of work. To reduce your exposure to these chemicals:
Work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter
out microscopic particles.
Table of Contents
INTRODUCTION................................................................................................................................ 2
Manual Accuracy......................................................................................................................... 2
Contact Info................................................................................................................................. 2
Rotary Table Description............................................................................................................. 2
Identification................................................................................................................................ 3
SECTION 1: SAFETY........................................................................................................................ 4
Safety Instructions for Machinery................................................................................................ 4
SECTION 2: SETUP.......................................................................................................................... 6
Needed for Setup........................................................................................................................ 6
Unpacking................................................................................................................................... 6
Inventory...................................................................................................................................... 7
Clean Up..................................................................................................................................... 7
Mounting On Mill Table............................................................................................................... 8
Installing T-Slot Table................................................................................................................. 9
Centering T-Slot Table with Rotary Table................................................................................... 9
Installing Chuck......................................................................................................................... 10
Centering Chuck with Rotary Table.......................................................................................... 10
Aligning with Mill X-Axis............................................................................................................ 11
Centering with Mill Spindle........................................................................................................ 12
Installing Spacer Plate.............................................................................................................. 13
SECTION 3: OPERATIONS............................................................................................................ 15
Basic Controls........................................................................................................................... 15
Table Movement....................................................................................................................... 16
Table Lock Lever....................................................................................................................... 16
Indexing lever............................................................................................................................ 16
Degree Scale............................................................................................................................ 17
Handwheel Scale...................................................................................................................... 18
Adjusting Vernier Scale............................................................................................................. 18
Using Vernier Scale.................................................................................................................. 19
Spacing Examples.................................................................................................................... 20
SECTION 4: ACCESSORIES.......................................................................................................... 22
SECTION 5: MAINTENANCE......................................................................................................... 24
Schedule................................................................................................................................... 24
Cleaning.................................................................................................................................... 24
Lubrication................................................................................................................................. 24
Surface Care............................................................................................................................. 25
Preloading................................................................................................................................. 25
SECTION 6: PARTS........................................................................................................................ 26
WARRANTY AND RETURNS......................................................................................................... 29
INTRODUCTION
Manual Accuracy
Contact Info
We are proud to offer this manual with your new
rotary table! We've made every effort to be exact
with the instructions, specifications, drawings, and
photographs of the rotary table we used when
writing this manual. However, sometimes errors
do happen and we apologize for them.
We stand behind our machines. If you have any
service questions, parts requests or general questions about the rotary table, please call or write us
at the location listed below.
Also, owing to our policy of continuous improvement, your rotary table may not exactly match
the manual. If you find this to be the case, and
the difference between the manual and rotary
table leaves you in doubt, check our website for
the latest manual update or call technical support
for help.
Before calling, find the manufacture date of your
rotary table by looking at the date stamped into
the machine ID label (see below). This will help
us determine if the manual version you received
matches the manufacture date of your rotary
table.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail: techsupport@grizzly.com
If you have any comments regarding this manual,
please write to us at the address below:
Grizzly Industrial, Inc.
/O Technical Documentation Manager
P.O. Box 2069
Bellingham, WA 98227-2069
Email: manuals@grizzly.com
C
Rotary Table
Description
Manufacture Date
of Your Machine
For your convenience, we post all available manuals and manual updates for free on our website
at www.grizzly.com. Any updates to your model
of rotary table will be reflected in these documents
as soon as they are complete.
-2-
Rotary indexing tables offer the ability to rotate
the workpiece for machining operations. Circular
slots and round features composed of any portion
of a whole circle can be produced with a rotary
table. These capabilities would be difficult, if not
impossible to do any other way.
Additionally, this rotary indexing table is used
to create circular hole patterns, produce exactly
spaced radial features, and to machine facets on
the workpiece. Using the spacer plates supplied
with this unit will allow quick rotary placements
important in this type of production work.
Model H7506 (Mfg. 1/09+)
Identification
T-Slot Table
Indexing
Lever
Degree
Scale
Rotary
Table
Lock
Backlash
Adjustment
Lock
Backlash
Adjustment
Wheel
Vernier
Scale
Handwheel
Scale
Figure 1. Model H7506 identification.
NOTICE
If you have never used this type of rotary table or equipment before, We strongly recommend that you read books, review industry trade magazines, or get formal training before beginning any projects. Regardless of the content in this section, Grizzly Industrial will not be held
liable for accidents caused by lack of training.
Model H7506 (Mfg. 1/09+)
-3-
SECTION 1: SAFETY
For Your Own Safety, Read Instruction
Manual Before Operating this Machine
The purpose of safety symbols is to attract your attention to possible hazardous conditions. This
manual uses a series of symbols and signal words intended to convey the level of importance
of the safety messages. The progression of symbols is described below. Remember that safety
messages by themselves do not eliminate danger and are not a substitute for proper accident
prevention measures.
Indicates an imminently hazardous situation which, if not avoided,
WILL result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
COULD result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
MAY result in minor or moderate injury. It may also be used to alert
against unsafe practices.
symbol is used to alert the user to useful information about
NOTICE This
proper operation of the machine.
Safety Instructions for Machinery
Safety Instructions for Machinery
1.
READ ENTIRE MANUAL BEFORE
STARTING. Operating machine before
reading the manual greatly increases the
risk of injury.
4.
ALWAYS USE HEARING PROTECTION
WHEN OPERATING MACHINERY.
Machinery noise can cause permanent
hearing loss.
2.
ALWAYS USE ANSI APPROVED
SAFETY GLASSES WHEN OPERATING
MACHINERY. Everyday eyeglasses only
have impact resistant lenses—they are
NOT safety glasses.
5.
WEAR PROPER APPAREL. DO NOT
wear loose clothing, gloves, neckties, rings,
or jewelry that can catch in moving parts.
Wear protective hair covering to contain
long hair and wear non-slip footwear.
3.
ALWAYS WEAR A NIOSH APPROVED
RESPIRATOR WHEN OPERATING
MACHINERY THAT PRODUCES DUST.
Most types of dust (wood, metal, etc.) can
cause severe respiratory illnesses.
6.
NEVER OPERATE MACHINERY WHEN
TIRED OR UNDER THE INFLUENCE OF
DRUGS OR ALCOHOL. Be mentally alert
at all times when running machinery.
-4-
Model H7506 (Mfg. 1/09+)
Safety Instructions for Machinery
7.
ONLY ALLOW TRAINED AND PROPERLY SUPERVISED PERSONNEL TO
OPERATE MACHINERY. Make sure
operation instructions are safe and clearly
understood.
8.
KEEP CHILDREN/VISITORS AWAY.
Keep all children and visitors away from
machinery. When machine is not in use,
disconnect it from power, lock it out, or
disable the switch to make it difficult for
unauthorized people to start the machine.
9.
UNATTENDED OPERATION. Leaving
machine unattended while its running
greatly increases the risk of an accident or
property damage. Turn machine Off and
allow all moving parts to come to a complete stop before walking away.
16. REMOVE CHUCK KEYS OR ADJUSTING
TOOLS. Make a habit of never leaving
chuck keys or other adjustment tools in/on
the machine—especially near spindles!
17. DAMAGED MACHINERY. Check for binding or misaligned parts, broken parts,
loose bolts, other conditions that may
impair machine operation. Always repair or
replace damaged parts before operation.
18. DO NOT FORCE MACHINERY. Work at
the speed for which the machine or accessory was designed.
19. SECURE WORKPIECE. Use clamps or
a vise to hold the workpiece when practical. A secured workpiece protects your
hands and frees both hands to operate the
machine.
10. DO NOT USE IN DANGEROUS
ENVIRONMENTS. DO NOT use machinery in damp, wet locations, or where any
flammable or noxious fumes may exist.
20. DO NOT OVERREACH. Maintain stability
and balance at all times when operating
machine.
11. KEEP WORK AREA CLEAN AND WELL
LIGHTED. Clutter and dark shadows may
cause accidents.
21. MANY
MACHINES
CAN
EJECT
WORKPIECES TOWARD OPERATOR.
Know and avoid conditions that cause the
workpiece to "kickback."
12. USE A GROUNDED POWER SUPPLY
RATED FOR THE MACHINE AMPERAGE.
Grounded cords minimize shock hazards.
Operating machine on an incorrect size of
circuit increases risk of fire.
13. ALWAYS DISCONNECT FROM POWER
SOURCE
BEFORE
SERVICING
MACHINERY. Make sure switch is in OFF
position before reconnecting.
14. MAINTAIN MACHINERY WITH CARE.
Keep blades sharp and clean for best and
safest performance. Follow instructions for
lubricating and changing accessories.
15. MAKE SURE GUARDS ARE IN PLACE
AND WORK CORRECTLY BEFORE
USING MACHINERY.
Model H7506 (Mfg. 1/09+)
22. STABLE MACHINE. Machines that move
during operations greatly increase the
risk of injury and loss of control. Verify
machines are stable/secure and mobile
bases (if used) are locked before starting.
23. CERTAIN DUST MAY BE HAzARDOUS
to the respiratory systems of people and
animals, especially fine dust. Be aware of
the type of dust you are exposed to and
always wear a respirator designed to filter
that type of dust.
24. EXPERIENCING DIFFICULTIES. If at
any time you are experiencing difficulties
performing the intended operation, stop
using the machine! Contact our Technical
Support Department at (570) 546-9663.
-5-
SECTION 2: SETUP
Needed for Setup
Read through this entire
manual to become familiar with the controls and
operations before using
this rotary table. Follow
all of the safety instructions in the owner's manual for your mill.
Wear safety glasses during the entire setup process!
This rotary table is very
heavy. Get lifting help and
use proper lifting methods to avoid possible
serious personal injury.
The following are needed to complete the setup
process, but are not included with your rotary
table.
Description
Qty
•Safety Glasses............................................ 1
•
Cleaner/Degreaser (Page 7)....... As Needed
•Disposable Shop Rags................ As Needed
•
Additional People........................................ 1
•
Clamping Hardware..................... As Needed
Unpacking
Your rotary table was carefully packaged for safe
transportation. Remove the packaging materials
from around your rotary table and inspect it. If
you discover the rotary table is damaged, please
immediately call Customer Service at (570) 5469663 for advice.
Save the containers and all packing materials for
possible inspection by the carrier or its agent.
Otherwise, filing a freight claim can be difficult.
When you are completely satisfied with the condition of your shipment, inventory the contents.
SUFFOCATION HAZARD!
Immediately discard all plastic bags and packing materials to eliminate choking/suffocation hazards for children
and animals.
-6-
Model H7506 (Mfg. 1/09+)
Inventory
Clean Up
The following is a description of the main components shipped with your rotary table. Lay the
components out to inventory them.
The unpainted surfaces are coated with a waxy
oil to prevent corrosion during shipment. Remove
this protective coating with a solvent cleaner or
degreaser, such as shown in Figure 3. For thorough cleaning, some parts must be removed.
For optimum performance, clean all moving
parts or sliding contact surfaces. Avoid chlorine-based solvents, such as acetone or brake
parts cleaner that may damage painted surfaces. Always follow the manufacturer’s instructions
when using any type of cleaning product.
Note: If you can't find an item on this list, check the
mounting location on the rotary table or examine
the packaging materials carefully. Occasionally
we pre-install certain components for shipping
purposes.
Inventory: (Figure 2)
Qty
A. Model H7506 Rotary Table......................... 1
B.T-Slot Table................................................. 1
C. Chuck Key................................................... 1
D. Hardware & Tools:
—Cap Screws M10-1.5 x 100 (Chuck)........ 3
—Hex Wrenches 4, 5, 6, 8mm........... 1 Each
—Cap Screws M10-1.5 x 60 (Table)............ 3
Not Shown:
—Cap Screws M6-1 x 12 (Keys)................. 2
—Alignment Keys 16mm............................. 2
E. Spacer Plates 2, 3, 4, 6, 8, 12, 24...... 1 Each
F. 3-Jaw Chuck 6 1⁄ 2"........................................ 1
Many cleaning solvents
are toxic if inhaled.
Minimize your risk by only
using these products in a
well ventilated area.
A
F
D
E
Gasoline and petroleum
products have low flash
points and can explode
or cause fire if used to
clean machinery. DO
NOT use these products
to clean the machinery.
B
G2544—Solvent Cleaner & Degreaser
H9692—Orange Power Degreaser
Great products for removing shipping grease.
C
Figure 2. Model H7506 inventory.
If any nonproprietary parts are missing (e.g. a
nut or a washer), we will gladly replace them; or
for the sake of expediency, replacements can be
obtained at your local hardware store.
Figure 3. Cleaner/degreasers available from
Grizzly.
Model H7506 (Mfg. 1/09+)
-7-
Mounting On Mill
Table
Before mounting the rotary table on the mill table,
make sure the mill table and spindle are aligned
correctly as instructed in the owner's manual for
the mill. Also, ensure that the mill table surface
and the mounting surfaces of the rotary table are
clean and free of burrs and scratches by "stoning"
them (refer to the Surface Care section on Page
25 for detailed instructions).
To mount the rotary table on the mill table:
1.DISCONNECT MILL FROM POWER!
2.
3.
Carefully place the rotary table on the mill
table, then properly align it.
—If you are using the alignment keys, position the rotary table so that the keys are in
the center slot of the mill table.
Note: If the mill table T-slots are wider than
the alignment keys, push the rotary table
back so that both keys are firmly up against
the back of the mill table T-slot.
—If you are unable to use the alignment
keys, use a precision square to align the
rotary table with the front edge of the mill
table, as shown in Figure 4 (refer to the
Aligning with Mill X-Axis section on Page
11 for additional instructions).
Measure the width of the mill table T-slots.
—If the mill table T-slots are less than 16mm
wide, remove the alignment keys from the
rotary table and use a precision square to
align the bottom edge of the rotary table
with the front edge of the mill table in
Step 3.
—If the mill table T-slots are 16mm or wider,
install the alignment keys in the slots of the
rotary table mounting surface.
For horizontal mounting, install the keys
in the left and right slots of the horizontal
mounting surface of the rotary table so that
the rotary handwheel hangs over the front
of the mill table when mounted.
For vertical mounting, where you install the
keys will depend on your operation. It is
best to install them in the bottom and top
slots so that the rotary handwheel faces
the front when mounted. However, it may
be useful to install the keys in the left and
right slots for certain setups that require
large parts to hang over the edge of the
mill table. Careful consideration should be
given to either position to ensure ease of
use and safe operation.
-8-
Figure 4. Using a precision square to align the
rotary table with the mill table.
4.Secure the rotary table in place using the
proper clamping hardware. It is important to
secure the rotary table to the mill table in a
very strong and solid setup—this will help
with accuracy, efficiency and general safety.
Model H7506 (Mfg. 1/09+)
Installing T-Slot
Table
To install the T-slot table:
1.Use shop rags and mineral spirits to thoroughly clean the mating surfaces of the rotary
table and the T-slot table, including the boss
and socket.
2.
While aligning the mounting holes, place the
socket of the table onto the boss of the rotary
table.
3.Secure the table with the (3) M10-1.5 x 60
cap screws, as shown in Figure 5.
T-Slot
Table
Centering T-Slot
Table with Rotary
Table
To center the T-slot table with the rotary
table:
1.Position a dial indicator mounted to a magnetic base next to the rotary table with the
needle perpendicular and touching the outside edge of the T-slot table.
2.Loosen the three cap screws that secure the
T-slot table to the rotary head. Make sure
there is a little tension on the cap screws so
the T-slot table cannot shift on its own.
3.Unlock the indexing lever and turn the
handwheel clockwise. Take note of the total
indicated runout and stop at the low side of
the runout.
x3
4.Use a dead blow hammer to lightly tap on
the opposite edge of the T-slot table from the
indicator until 1⁄2 the indicated runout is corrected.
5.Repeat Steps 3–4 until the runout is adjusted
to your satisfaction.
Figure 5. T-slot table installed.
Model H7506 (Mfg. 1/09+)
6.Tighten the three cap screws, then check
the runout again. If necessary, repeat
Steps 2–4.
-9-
Installing Chuck
To install the chuck onto the rotary table:
1.Use shop rags and mineral spirits to thoroughly clean the mating surfaces of the rotary
table and the chuck, including the boss and
socket.
2.
Centering Chuck
with Rotary Table
For accurate results, the chuck must be positioned so that it is concentric with the center axis
of the rotary table.
To center the chuck with the rotary table:
While aligning the mounting holes, place
the socket of the chuck onto the boss of the
rotary table.
1.Use shop rags and mineral spirits to clean the
mounting face of each jaw.
3.Secure the chuck with the (3) M10-1.5 x 100
cap screws, as shown in Figure 6.
2.Secure a precision mandrel or similar part
into the chuck.
3.Loosen the four aligning set screws along
the outside edge of the chuck until they are
flush with the surface of the chuck body (see
Figure 7).
x3
Figure 6. 3-jaw chuck installed.
x4
Figure 7. Chuck alignment set screw.
-10-
Model H7506 (Mfg. 1/09+)
4.
Aligning with Mill
X-Axis
Mount a dial indicator next to the chuck
so that the plunger is perpendicular to the
mandrel and just touching it, as shown in
Figure 8.
If you are using the rotary table alignment keys,
these keys will ensure the face of the rotary table
is aligned with the X-axis of the mill.
Hex Wrench
If you are unable to use the alignment keys, you
can align the rotary table to the X-axis as instructed below.
To align the rotary table with the X-axis without the alignment keys:
1.
Figure 8. Using a dial indicator to center the
chuck.
5.
While watching the needle of the dial indicator, turn the rotary handwheel and stop at the
lowest point of runout on the mandrel.
Remove the alignment keys from the rotary
table and place it on the mill table.
2.Position a precision square across the front
edge of the mill's table, adjust the rotary table
flat against the square, as shown in Figure 9,
then clamp the rotary table in place.
6.Insert a hex wrench into the aligning set
screw that is nearest to the top of the chuck,
then use the handwheel to rotate the chuck
until the hex wrench is at the very top of the
rotation.
7.Tighten this aligning set screw until 1⁄2 of the
total runout is eliminated.
8.Repeat Steps 5–7 until the runout error is
corrected to your satisfaction, then re-tighten
the cap screws to secure the chuck.
9.
Check the runout again. If necessary, repeat
this procedure.
Figure 9. Using a precision square to align with
X-axis.
3.Use a test indicator mounted in the mill
spindle and indicate to one side of the face
or back.
4.
Move the mill table in-and-out to indicate
across the full width of the rotary table.
5.If necessary, loosen the clamps, tap the
rotary table into position so that the indicator
reads zero deviation across the full width of
the rotary table, then re-clamp it.
Model H7506 (Mfg. 1/09+)
-11-
Centering with Mill
Spindle
There are many ways to center the mounted
workpiece with the mill spindle. Review the suggestions below, then use your best judgement
based on your experience and skills to select the
correct method for your operation.
4.
Mount the test indicator in the mill spindle
using a collet or chuck.
5.Indicate the workpiece key feature, then
rotate the mill spindle by hand in just one
direction while watching the indicator dial.
Tip: Use a mirror to aid in reading the test
indicator as it rotates away from you.
6.
Workpiece Mounted Horizontally On
T-Slot Table
Adjust the mill table until the indicator dial
reads zero runout throughout the spindle's
rotation.
Note: When the workpiece key feature is
large enough, it may be easier to use an
edge finder instead of a test indicator.
1.Position a test indicator mounted on a magnetic base next to the rotary table, as shown
in Figure 10.
Chuck Mounted Horizontally
1.
Mount a precision mandrel or quality drill rod
into the chuck, as shown in Figure 11.
Figure 10. Aligning the workpiece using a test
indicator.
2.Indicate the inside or outside of the workpiece
key feature, then rotate the handwheel of the
rotary table while watching the indicator dial.
Note: Turn the rotary table in just one direction to eliminate the affect of backlash and for
accurate indicator results.
3.
-12-
Adjust the workpiece on the rotary table until
there is zero runout when you fully rotate the
table and workpiece, then securely clamp the
workpiece to the T-slot table.
Figure 11. Horizontally aligning the chuck.
2.
Mount a test indicator in the mill spindle, then
indicate the outside of the mandrel, as shown
in Figure 11.
3.Rotate the mill spindle by hand in just one
direction while watching the indicator dial.
4.
Adjust the position of the mill table until the
dial reads zero deviation.
Model H7506 (Mfg. 1/09+)
Workpiece Mounted Vertically
1.
Mount an edge finder into the mill spindle.
2.
Accurately measure the diameter of the
workpiece, then mount it into the chuck, as
shown in Figure 12.
Installing Spacer
Plate
To install a spacer plate:
1.Unlock and rotate the backlash adjustment
wheel clockwise until the worm gear and
wheel disengage.
2.Unlock the indexing lever, turn the face of the
rotary table until the zero mark on the degree
scale and the index marker are aligned, as
shown in Figure 13, then re-lock the indexing
lever.
Aligned At 0°
Figure 12. Using an edge finder to align the
workpiece.
3.
Find one side of the workpiece with the edge
finder, then note the Y-axis position of the mill
table.
4.Remove the edge finder from the mill spindle,
then move the mill table 1⁄2 the diameter of the
workpiece plus 1⁄2 the diameter of the edge
finder.
Figure 13. Degree scale at 0°.
Note: Make sure you account for any backlash when moving the mill table.
3.Remove the three cap screws and the back
cover from the rotary table.
The center of the mill spindle should now be
positioned over the center line of the workpiece
mounted in the rotary table.
Tip: If necessary, you can thread the M6-1 x
12 cap screws used with the alignment keys
into the two threaded holes in the back cover
to aid in removing it.
Model H7506 (Mfg. 1/09+)
-13-
4.Place the desired spacer plate on the hub
with the pin of the plate facing in and aligned
with the #1 hole of the 12 alignment holes
(see Figures 14–15).
Back of
Spacer
Aligning Pin
#1 Alignment
Hole of 12
Spacer Plate
Aligned with
Index Pin
Figure 15. Spacer plate installed.
Index
Pin
Figure 14. Spacer plate installation location.
5.Rotate the spacer plate clockwise until the
next indexing slot of the plate aligns with the
index pin, which will allow the aligning pin of
the plate to slip into one of the 12 alignment
holes and the plate to lay flat against the
rotary table.
6.Re-install the back cover.
-14-
Model H7506 (Mfg. 1/09+)
SECTION 3: OPERATIONS
Basic Controls
Read through this entire
manual to become familiar with the controls and
operations before using
this rotary table. Follow
all of the safety instructions in the owner's manual for your mill.
Refer to Figure 16 and the descriptions below to
become familiar with the basic controls of your
rotary table.
A
B
Always wear safety
glasses when operating
this equipment.
F
C
Loose hair, clothing, or
jewelry could get caught
in machinery and cause
serious personal injury.
Keep these items away
from moving parts at all
times to reduce this risk.
NOTICE
If you have never used this type of equipment before, We strongly recommend
that you read books, review industry trade
magazines, or get formal training before
beginning any projects. Regardless of the
content in this section, Grizzly Industrial
will not be held liable for accidents caused
by lack of training.
E
D
Figure 16. Basic controls.
A. Indexing Lever: Engages or disengages the
spacer plate for quick indexing of 2, 3, 4, 6,
12, or 24 spaces.
B. Degree Scale: Displays a quick reference for
table positioning. It is in incremented in whole
degrees.
C. Backlash Adjustment Wheel & Lock: When
the worm gear and wheel are disengaged,
allows the operator to turn the table by hand
without using the handwheel. This wheel also
allows adjustment of the backlash between
the worm gear and worm wheel. Loosen
the lock, then rotate the wheel to adjust the
backlash. To disengage the gear and wheel,
rotate the wheel clockwise until they disengage.
D. Vernier Scale: Has graduations that derive
10" (10 arc seconds).
Model H7506 (Mfg. 1/09+)
-15-
E.
F.
Handwheel Scale: Has a resolution of 1'
(1 arc minute) and displays whole degree
marks. A full rotation of the handwheel turns
the rotary table 4°.
Rotary Table Lock: Locks the table/chuck in
place. This reduces the stress on the worm
and worm gear interface, and helps ensure
the table does not change position during
heavy machining operations. When cutting
circular slots, a slight drag can be applied
with the table lock to increase preload and
prevent chatter caused by any backlash in
the worm gear.
Table Movement
The rotary table rotates by turning the handwheel,
which is attached to a precision worm gear
engaged with a worm wheel. The ratio between
these gears is 1:90, which means one complete
turn of the handwheel rotates the table 4°.
Besides rotating the table in precision increments,
the worm gear and wheel can be disengaged
and the table can be rotated by hand. This is the
quickest way to use the spacing plates provided
with the rotary table when speed of operation is
important.
Table Lock Lever
To help maximize rigidity during operation, the
rotary table has a table lock lever. Tightening the
lever locks the table in place.
Indexing lever
The indexing lever is attached to a gear that
meshes with a rack on the end of the springloaded index pin (see Figure 17).
Indexing
Lever
Figure 17. Indexing lever.
The index pin engages a wheel inside the head
that has 24 detents. When no spacer plate is
used, the index pin will stop the rotary head 24
times during one revolution in 15° increments.
To engage the index pin with a detent, pull the
indexing lever toward the head, then rotate the
head as you release the lever. Continue to rotate
the head until the index pin finds the next detent.
To keep the index pin from engaging the detents,
pull the indexing lever toward the head and push
it in towards the back of the rotary table. This
will disengage the index pin and lock the lever in
place, allowing the head to be freely rotated.
Slightly tighten the lock lever to create an extra
drag that minimizes finish problems associated
with gear backlash. The brake mechanism is conical in shape, and the brake shoes pull the rotary
portion of the head into the base, eliminating play
by putting pressure between these two surfaces.
-16-
Model H7506 (Mfg. 1/09+)
Degree Scale
The degree scale is marked on the edge of the
rotary head with increments of 1° (see Figure 18).
The zero point can be synchronized with the
indexing lever to start the table indexing at 0°.
To use the degree scale:
1.Disengage the indexing lever.
2.Rotate the handwheel until the zero mark
on the degree scale aligns with the index
marker, then engage the indexing lever.
3.Rock the handwheel back-and-forth to make
sure the index pin is fully seated.
Index
Marker
4.
Closely examine the alignment of the scale
zero mark and the index marker. If the marks
do not exactly align, loosen the two screws
on the index marker and adjust the marker
until they do, then re-tighten the screws.
Indexing
Scale
Figure 18. Degree scale.
Model H7506 (Mfg. 1/09+)
-17-
Handwheel Scale
The handwheel scale can be repositioned without
rotating the handwheel. This helps when aligning
all of the zeros at the beginning of the job.
The scale is marked on a collar behind the
handwheel with a friction fit, as shown in Figure
19. To adjust the collar, hold the handwheel to
keep it from turning, then rotate the collar to the
desired alignment.
Adjusting Vernier
Scale
The vernier scale is engraved on a collar behind
the handwheel scale (see Figure 20).
The vernier scale can be adjusted for easy viewing in both the horizontal or vertical position.
Loosen the slotted set screw on the rim of the
collar, rotate the collar as needed, then re-tighten
the set screw.
Handwheel
Scale
Vernier
Scale
Set Screw
Figure 19. Adjusting the handwheel scale.
-18-
Figure 20. Adjusting the vernier scale.
Model H7506 (Mfg. 1/09+)
Using Vernier Scale
Use the vernier scale to rotate the table by 10" (10
arc seconds) at a time.
In the example below, you will be setting the
rotary table to 16° (degrees), 42' (arc minutes), 20"
(arc seconds). This exercise assumes the table
degree scale is at zero, and both the handwheel
and vernier scales are aligned at zero.
To set the table at 16° 42' 20":
1.
With the degree scale at 0°, rotate the
handwheel clockwise four full turns, which
will rotate the table 16°.
—If you go past zero on the fourth turn, return
the table to 0°, then start again.
Note: When changing directions with the
handwheel, take into account any backlash.
2.Slowly continue to turn the handwheel clockwise until the zero mark on the vernier scale
aligns with the 42' mark on the handwheel
scale (see the illustration in Figure 21).
Degree
Scale
20"
(Arc Seconds)
60
40 30 20 10
1
42'
(Arc Minutes)
0
50
40
Vernier Scale
30
20
10
0
50
Handwheel Scale
16º 42' 20"
Figure 21. Table set at 16° 42' 20".
3.Identify the mark on the vernier scale that is
two marks or 20" to the left of the zero mark.
Note: When the handwheel is turned clockwise, the marks to the left of the zero mark
on the vernier scale are used, and when the
handwheel is turned counterclockwise, the
marks on the right are used.
4.Identify the mark on the handwheel scale that
is immediately to the left of the vernier scale
mark identified in Step 3, then slowly rotate
the handwheel clockwise to align these two
marks. The table is now set 16° 42' 20", as
illustrated in Figure 21.
Model H7506 (Mfg. 1/09+)
-19-
Spacing Examples
Example A
The first example shows a method for producing
six evenly-spaced holes on a circular workpiece
(see Figure 22).
60˚
To mill six evenly-spaced holes 60° apart in a
circular workpiece:
1.
Make sure the mill spindle is OFF and has
come to a complete stop.
2.Disengage the indexing lever, then rotate the
head until the zero mark on the degree scale
is aligned with the index mark.
3.
Engage the indexing lever and make sure
that the index pin is properly seated, then
lock the table in place.
4.Turn the spindle ON, drill the first hole, then
turn the spindle OFF and wait until it has
come to a complete stop.
5.Disengage the indexing lever, unlock the
table, then rotate the rotary table clockwise
until the index pin engages the next detent in
the spacer plate.
Figure 22. Six evenly-spaced holes in a circular
workpiece 60° apart.
This example assumes that the following statements are true:
•The six-slot spacer plate is installed into the
rotary table.
•The rotary table is securely mounted on the
mill table in the horizontal position.
Note: The degree scale should now read 60°.
If the head has rotated too far, rotate it back
counterclockwise past the 60° mark, and try
again.
6.Lock the table down, turn the spindle ON, drill
the next hole, then turn the spindle OFF.
7.Repeat Steps 5–6 for the remaining four
holes.
Note: Be sure to turn the spindle OFF and
wait until it has come to a complete stop
before making adjustments.
•The workpiece is centered on the rotary table
and elevated for proper machining clearance.
•The workpiece is securely clamped to the
T-slot table or in the chuck.
•The mill spindle is correctly aligned over the
first hole.
•The backlash wheel of the rotary table is
rotated to disengage the worm gear and
wheel.
-20-
Model H7506 (Mfg. 1/09+)
Example B
To make two circular slots:
In the second example, a method for producing two circular slots in a circular workpiece is
explained (see Figure 23).
1.Use the handwheel to rotate the rotary table
to the 0° mark on the degree scale, then lock
the table down.
Note: Make sure the handwheel and vernier
scales also read 0°.
90º
1.125"
2.Postion the mill table so that the spindle is
centered over the X-axis of the workpiece and
1.125" from the right edge of the workpiece.
Radius
0.25"
3.
With a 1⁄4" end mill installed in the mill spindle,
make a 0.083" deep hole (approximately 1⁄3 of
the cutter's diameter).
4.
With the end mill continuing to cut, turn the
rotary table handwheel clockwise until the
degree scale reads 90°.
Start
Here
Figure 23. Two 90° circular slots.
Tip: Print out a table that shows, in order, all of
the positions that you need to stop the workpiece
to perform a milling operation, especially if there
are several positions or they are unusual or
staggered. This will give you a visual method to
confirm the positioning of the workpiece by viewing the degree scale. To avoid mistakes, do this
before mounting the workpiece.
This example assumes that the following statements are true:
•The rotary table is securely mounted on the
mill table in the horizontal position.
5.Raise the end mill from the workpiece, turn
the rotary table handwheel counterclockwise
until the degree scale reads 0° again.
6.To eliminate the effect of backlash, rotate the
handwheel one additional full turn counterclockwise, then one full turn clockwise back
to the degree scale 0° mark.
7.Repeat Steps 3–6 until the final depth of cut
is reached.
8.Raise the end mill from the workpiece, then
return the rotary table back to the degree
scale 0° mark.
•The workpiece is centered on the rotary table
and elevated for proper machining clearance.
9.
•The workpiece is securely clamped to the
rotary table.
10.Repeat Steps 3–7 to complete the second
circular slot.
Move the mill table 2.25" to the right along its
X-axis to align the cutter with the end of the
second circular slot.
•The mill spindle is centered over the
workpiece.
•The backlash adjustment wheel is turned
so that the worm gear and wheel are fully
engaged.
•The index lever is secured in the up position
so that the head can freely rotate.
Model H7506 (Mfg. 1/09+)
-21-
ACCESSORIES
SECTION 4: ACCESSORIES
G9640— 90° Wide Base Square 3" x 5"
G9641— 90° Wide Base Square 4" x 6"
G9642— 90° Wide Base Square 5" x 8"
Grade 0, heavy-duty stainless steel 90° precision
squares feature wide bases for stability. Perfect
for all setup and inspection work.
G1075—52-PC. Clamping Kit 1 ⁄ 2" T-Nut
G1076—52-PC. Clamping Kit 5 ⁄ 8" T-Nut
This clamping kit includes 24 studs, 6 step block
pairs, 6 T-nuts, 6 flange nuts, 4 coupling nuts, and
6 end hold-downs. The rack is slotted so it can be
mounted close to the machine for easy access.
Figure 26. 52-PC. Clamping Kit.
Figure 24. 90° Precision Wide-Base Squares.
G9610—Test Indicator
0.03" Range/0.001" Resolution
G9611—Test Indicator
0.008" Range/0.0001" Resolution
G9612—Test Indicator
0.030" Range/0.0005" Resolution
G9629—Universal Indicator Holder
Mount your test indicator right on your mill for
guaranteed accurate readings. C-frame holder
mounts with a single screw directly on the quill
and does not interfere with the cutting tool.
Clamping diameter is 1 7⁄ 8". The length from the
clamping bracket to the indicator is 4 1⁄ 2". Suitable
for all popular indicators with a 5 ⁄ 32" shank.
These test indicators have an easy to read dial
and a pivoting stylus that moves at right angles to
the dial face.
Figure 27. G9629 Universal Indicator Holder.
Figure 25. Test Indicator.
-22-
Model H7506 (Mfg. 1/09+)
H2939—4 Piece Edge Finder Set
Four different styles to cover any setup problem!
Set includes one each: a 3 ⁄ 8" diameter with a
point, a combination 3 ⁄ 8" diameter with a point and
a 0.200" shoulder, a 1⁄ 2" diameter with a 0.200"
shoulder, and a combination 1⁄ 2" diameter with a
0.200" shoulder and a 0.500" shoulder.
Figure 28. H2939 4-Pc. Edge Finder Set.
G9296—Adjustable Tailstock
For 8" and 10" Rotary Tables
G9297—Adjustable Tailstock
For 12" Rotary Tables
When used with your rotary table and mill, these
adjustable tailstocks provide the support you
need for those longer workpieces. Clamps to your
mill table with standard clamping hardware and
allows precise and accurate adjustments.
H8370—Power Feed for Mills
If you want to get the most out of your mill, you
really need a power feed. This power feed comes
with everything required to start milling with exact
control. Comes supplied with a mounting bracket,
gear, auto-stop limit switch with moveable stop
pins, gear guard, and motor. Specs: 0–140 RPM,
200 RPM rapid switch, 440 in/lb. maximum torque,
110V 60Hz motor, 4:1 bevel drive gear.
Figure 30. H8370 Power Feed.
T20257—Brown & Sharpe ® 6" Digital Caliper
Swiss-made quality and design! The Tesa ShopCal provides easy-to-read, accurate measurements of day-to-day operations. Stainless steel
for durable, reliable, and accurate measurements.
Other features include: Absolute measuring system, 0"–6"/0"–150mm range, 0.0005"/0.01mm
resolution, specifications consistent with DIN 862,
large 1⁄4" LCD for easy reading, auto shut-off, and
instant inch/metric conversion.
Figure 31. T20257 Brown & Sharpe® 6" digital
caliper.
Figure 29. Adjustable Tailstock.
Model H7506 (Mfg. 1/09+)
-23-
SECTION 5: MAINTENANCE
Schedule
Lubrication
For optimum performance from your rotary table,
follow this maintenance schedule and refer to any
specific instructions given in this section.
Wipe the three ball oilers clean that are shown in
Figure 32, then depress the ball with the tip of
an oil bottle filled with 20W non-detergent oil and
squirt once. Clean away any excess oil from the
area.
Daily:
•
Clean and lubricate the rotary table.
•Dress the machined surfaces (Page 25).
•
Check/resolve any unsafe condition.
Monthly:
•Disassemble and clean the rotary table.
Ball Oilers
Cleaning
It is essential that the rotary table be cleaned
after every use, and the surfaces oiled with a light
machine oil to prevent corrosion.
DO NOT use compressed air to clean your
rotary table. Chips or debris may become lodged
between the moving parts, reducing the life and
accuracy of the device. Instead, use a stiff-bristled
brush to remove the chips and swarf, then wipe
down the surfaces with a clean shop rag.
Figure 32. Location of ball oilers.
Every 80 hours of use, completely disassemble
the rotary table, then thoroughly clean each part
and re-lubricate.
-24-
Model H7506 (Mfg. 1/09+)
Surface Care
Preloading
Nicks, dings, and scratches on the surface of the
rotary table and base can have an adverse effect
on accuracy and may damage the workpiece or
mill table.
To prevent the effects of chatter, you can control
preload with the table lock lever (see Figure 33).
Apply slight drag with the lever to put the head
against the body to minimize any play that may
cause finish problems.
Prior to use, dress or "stone" these surfaces with a
fine sharpening stone. A few strokes of the stone
on the mill table surface and the machined base
and back of the rotary table will help to ensure
longevity and accuracy.
Make sure to thoroughly wipe these surfaces
clean to remove any dust generated from the process, then apply a thin coat of light machine oil to
prevent corrosion.
Table
Lock Lever
Figure 33. Table lock lever.
Model H7506 (Mfg. 1/09+)
-25-
SECTION 6: PARTS
44
42
30
46 47
3
39
48
21
25
36
22
19
24
9-1
38
27
23
7
31
28
45
43
29
37
10
26
20
12
17
9
34
33
32
11
14
40
35
18
8
13
16
1
15
5
4
6
49
2
41
REF PART #
DESCRIPTION
REF PART #
DESCRIPTION
1
2
3
4
5
6
7
8
9
9-1
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
BODY
SPINDLE
INDEX PLATE
SPACER PLATE 2-HOLE
BUMPER PLATE
ALIGNMENT KEY
CLAMP RING
CLAMP RING
SPECIAL SCREW
COMPRESSION SPRING
SCREW ARBOR
INDEX HANDLE
SLEEVE
INDEX PIN
GEAR SHAFT
COVER
COMPRESSION SPRING
SPECIAL SCREW
CLAMP HANDLE
PLUG
VERNIER MARKER
WORM GEAR
WORM
INDEX MARKER
TAPERED PIN
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
HANDLE
NAME PLATE
SPECIAL WASHER
SPECIAL SPANNER NUT
ECCENTRIC SLEEVE
SHAFT SLEEVE
ROTATING SLEEVE
VERNIER SCALE
HANDWHEEL SCALE
SPRING PLATE
HANDWHEEL
PLUG
SMALL HANDLE
SPECIAL HEX NUT
SPECIAL SCREW
LOCKING PIN
SPACER PLATE 8-HOLE
3-JAW CHUCK
CAP SCREW M10-1.5 X 100
T--SLOT TABLE
CAP SCREW M10-1.5 X 60
HEX WRENCH 4MM
HEX WRENCH 5MM
HEX WRENCH 6MM
CAP SCREW M6-1 X 12
-26-
PH7506001
PH7506002
PH7506003
PH7506004
PH7506005
PH7506006
PH7506007
PH7506008
PH7506009
PH7506009-1
PH7506010
PH7506011
PH7506012
PH7506013
PH7506014
PH7506015
PH7506016
PH7506017
PH7506018
PH7506019
PH7506020
PH7506021
PH7506022
PH7506023
PH7506024
PH7506025
PH7506026
PH7506027
PH7506028
PH7506029
PH7506030
PH7506031
PH7506032
PH7506033
PH7506034
PH7506035
PH7506036
PH7506037
PH7506038
PH7506039
PH7506040
PH7506041
PH7506042
PSB154M
PH7506044
PCAP71M
PAW04M
PAW05M
PAW06M
PCAP26M
Model H7506 (Mfg. 1/09+)
WARRANTY CARD
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WARRANTY AND RETURNS
WARRANTY AND RETURNS
Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from
the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse,
negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty
and any and all warranties that may be implied by law, including any merchantability or fitness, for any particular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent
that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants.
In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and
any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.
We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special,
or consequential damages arising from the use of our products.
To take advantage of this warranty, contact us by mail or phone and give us all the details. We will then
issue you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of the
carton. We will not accept any item back without this number. Proof of purchase must accompany the
merchandise.
The manufacturers reserve the right to change specifications at any time because they constantly strive to
achieve better quality equipment. We make every effort to ensure that our products meet high quality and
durability standards and we hope you never need to use this warranty.
Please feel free to write or call us if you have any questions about the machine or the manual.
Thank you again for your business and continued support. We hope to serve you again soon.
Buy Direct and Save with Grizzly ® – Trusted, Proven and a Great Value!
~Since 1983~
Visit Our Website Today For
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