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Digital Readout System
MODEL H6087-H6098
INSTALLATION MANUAL
COPYRIGHT © JUNE, 2004 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.
#CA6351 PRINTED IN CHINA
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Installation Instructions
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Digital Readout System
Precaution
1. The travel length of the glass scale must
be longer than the maximum travel of the
machine. There should be at least 10mm
of clearance between the ends of the glass
scale and the maximum travel of the machine,
as shown in Figure 1.
3. Indicators must be set up properly to ensure
accurate measurement. Make sure indicator
axis is perpendicular to the work. If a vertical
dial indicator is used, as in
is important to ensure that the dial indicator
is perpendicular to the measured surface to
also avoid the cosine measurement error.
Figures 2 & 3, it
Figure 1. Glass scale clearance.
2. To ensure the reliability of the graduated glass
scale, and to avoid any possibility of scale
misalignment, the scale should be installed
on machined flat surfaces wherever possible.
In the case where there are no machined flat
surfaces available on the machine, machined
flat blocks or the aluminum fillers should be
used. Wherever possible, the scale ends and
the machine reader head should be installed
on a flat surface.
Figure 2. Horizontal scale alignment.
Figure 3. Vertical scale alignment.
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Location Selection
1/8"
1/8"
Scale Cover
Scale
Mounted
Scale Cover
R2 > 3"
R1 > 1-3/8"
To select proper intallation locations:
1. Scales should be installed on flat machined
surfaces.
2. The opening of the scale must not be installed
in direct exposure to metal shavings, oil,
water, dust or other foreign objects as illus
trated in Figure
should be installed.
4. The provided covers
4. A clearance of at least 1/8" between the scale
and scale cover is necessary
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Figure 6. Scale cover clearance.
5. All tapped screw holes must have at least
six threads to allow the screw to be firmly
secured. For the screw that is needed to
secure a heavy load, the tapped holes must
have at least eight threads. After tapping, the
holes must be deburred and cleaned.
(Figure 6).
3. In cases where machined flat surfaces are
Figure 4. Scale exposure.
not available, an mounting strip or strip
should be used to provide a flat surface for
the installation. The mounting strip, shown
in Figure 5, must be as short as possible to
provide a rigid surface.
Figure 5. Mounting strip.
6. All cables must be fixed, but also allow for
the maximum machine travel movements.
Figure 7 shows the recommended minimum
radius that should be used for bending the
scale cable.
Figure 7. Bending radii.
Digital Readout System
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7. Grounding is very important! Be sure recep-
1" ± .004"
.004"
.002"
0" ± .008"
.709 ± .008"
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Digital Readout System
ticle you plug into is grounded.
Installation
8. The horizontal and vertical alignment mea-
surement are taken at 20 mm away from the
scale ends, as shown in
Figure 8. Scale alignment measurements.
Figure 8.
Requirements
1. Requirements for the mounting surface:
—Parallel mounting
allelism of the two mounting surfaces must
be less than 0.1 mm of each other..
—Perpendicular mounting
two mounting surfaces must be less than
0.1 mm out of square.
Figure 9 & 10: The par-
Figure 11: The
Figure 9. Parallel mounting.
Figure 10. More parallel mounting.
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Figure 11. Perpendicular mounting.
> .04"
> .06"
> .06
"
2. Scale Alignment:
—For scale travel less than 37.4
mum parallel error between the scale and
the machine slide must be less than .04
as shown in
Figure 12.
—For scale travel longer than 37.4
(Figure 13), the maximum alignment parallelism error must be less than 0.06
Figure 12. Alignment, less than 37.4" travel.
", the maxi-
",
" mm
".
Figure 13. Alignment, more than 37.4" travel.
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3. Clearances between the reader head and scale body (Figure 14):
Scale Body
Reader Head
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Digital Readout System
—The clearance between the reader head and scale body must be kept between 0.03” - .06
—The reader head must be less than .001
" parallel with the scale and can be set with feeler gauges
to allow the reader head to move unrestricted along the scale.
".
Figure 14. Milling machine table direction and reader head clearance.
Direction on Lathe Installation:
When travelling towards the headstock, the reading should be reduce when the cross slide tavels towards
the center, the reading should also reduce.
Note:
To give the best protection at all times, the scale should be mounted with the rubber seals facing down.
Where extreme exposure to metal shavings, coolant, dirt and compressed air are present, install the sup
plied sheet metal cover guards for maximum protection.
Between the scale and the reader head is a blue strip which helps to maintain the correct distance between
the reader head and the scale. Remove this after installation.
Scale Reading Direction:
Before fitting the scale, ensure that the reading direction is correct. To change the direction of the scale,
turn the scale over.
Generally the scale reads in the correct direction with the label of the scale exposed.
Lathe Scale Installation:
Before fitting the scale, connect the
"X" axis to the cross slide to allow the diameter function to work.
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Scale Setup
One of the easiest ways to set up an "X" scale on
a milling machine is to clamp two parallels to the
flat table surface that the table travels on and set
the scale on the parallels.
To set up the "X" axis scale:
1. Carefully drill and tap the holes (Figure 15) to
match the provided screws.
4. When the scale is mounted, fix the reader
head to the saddle. If necessary, shim the
head to ensure that it is parallel and in-line
with the scales (
packing between the reader head and scale
allows for the correct clearance and holds the
reader head parallel to the scale.
Figure 17). NOTE: The blue
Figure 15. Drilling the screw holes.
2. Mount the cover over the scale and drill and
tap holes to secure it to the table, making
sure that there is 3mm of clearance between
the cover and the scale.
3. Mount the scale on the backing plate using
the pre-drilled holes (
that the scale is parallel with the machine
slide with a dial indicator.
Figure 16), checking
Figure 17. Completing "X" axis scale mounting.
To set up the
1. If the surface is not machined, mount the
backing plate and use the set screws to
adjust the backing plate. Check with a dial
indicator (
plate until the scale is square and perpen
dicular to the machine sl
"Y" axis scale:
Figure 18), and adjust the backing
ides.
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Figure 16. Mounting scale on backing plate.
Digital Readout System
Figure 18. Aligning the backing plate with a dial
indicator.
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2. Mount the bracket on the saddle (Figure 19),
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Digital Readout System
to accept the reader head, making sure that
the reader head is in-line and parallel to the
scale. Secure the cable and leave enough
free cable to allow for the travel of the slide.
Figure 19. Mounting the bracket to the saddle.
3. After the scale is aligned to the axis, drill and
tap the saddle to suit the provided
and mount the bracket as shown in
bracket
Figure
20. Ensure the reader head is sitting correctly
so when it is attached it will be square and
parallel to the scale.
Fitting the "Z
Before mounting the "Z
will read
" axis scale:
" axis scale, ensure that it
"+" as you wind the table down, increas-
ing the distance from the table to the cutter.
1. The "Z" axis scale should be installed on the
side of the column, ensuring that the open
side of the scale is away from the direct metal
shavings and coolant and that the travel is
in the right direction,
"–" towards the spindle
and "+" away from the spindle. The bracket
should be mounted on the knee (Figure 21),
and around the scale to allow for the cover to
protect the scale (Figure 22), where exces
sive coolant and metal shavings are present.
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Figure 20. Mounting the provided bracket.
Figure 21. Bracket mounting location.
Figure 22. Mounted scale cover.
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Lathe Installation
To install readout on a lathe:
1. Mount the scale parallel and square to the
slide, shown in
can be done with a dial indicator or a preci
sion level.
Figure 23. Testing for parallel
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Figure 25. Longitudal scale mounting on lathe.
4. Mount the reader head to the saddle with the
provided brackets (
may be required for some lathes. Mount cov
ers over the slides as shown in
Figure 26). Modification
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Figure 27.
Figure 23. Scale mounting location.
2. Select a flat surface that is suitable and clear
of the travelling parts of the lathe and mount
the cross slide scale, shown in
Figure 24. Flat surface for scale mounting.
3. The longitudal scale should be mounted on
the back of the lathe, (
open side of the scale facing down, and must
be parallel to the bed.
Figure 25) with the
Figure 24.
Figure 26. Proper reader head mounting with
provided brackets.
Figure 27. Slide cover mounting.
Digital Readout System
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