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Page 2
Table of Contents
Subject
Introduction
i
The DYNA-TRU Truing Device
7
Bearing Assembly
Motor and Wiring Assembly
Flexible Drive Shaft
Accessory Kit and Special Parts
DIA-CROWN Truing Rolls
The DYNA-TRU System - Performance
Where to Use
Operating Benefits
Stock Removal and Power Consumption
Cost Comparisons
Pieces per Dressing
Finishing Characteristics
Recommended Operating Procedures
Page Number
2-3
4-5
6-7
8
9
9
10 - 11
12 - 19
12
13
14
15
16
17
18 - 19
Application and Adaptation
Adapters
Conversion Kit
How to Order
Replacement and Repairs
Pricing
DIA-CROWN Truing Nibs
20 - 25
21
22 - 25
26
27
27
28
Page 3
Introduction
The DYNA-TRU Truing and Dressing System is the
result of field requirements, test experience, and the desire of
Norton Company to provide improved products for grinding.
History
Abrasive wheels used in precision grinding have always
required dressing and truing.
Dressing to condition the wheel for
fast cut; truing to prepare the wheel to produce good work.
Few changes have taken place in this field during recent
years and yet, truing and dressing continue to play a major part in
the performance of any precision grinding wheel. This area for
potential improvement required investigation.
Research
The preliminary work involved an analysis of existing
methods,
their limitations, and potentials. Actual field experience
in customer plants revealed that the basic capability of several
existing techniques was limited in application. Norton Company
believed that an improvement in the design and application of these
products would provide not only new potential for the tools, but would
improve on their present operational characteristics. The development
of a new truing tool and the means for applying the tool were required.
-2-
Page 4
Development
The application considered was the use of a diamond
impregnated truing roll as a truing tool. Testing revealed that
standard diamond wheels were unsuited for the operation because of
high cost and limited performance.
developed to meet this need.
Uniform diamond distribution combined
DIA-CROWN Truing Rolls were
with bonds of superior durability and holding power characterizes
this product. New manufacturing and finishing techniques condition
the product for its designed purpose - preparing a grinding wheel to
perform at maximum capability.
The application of DIA-CROWN Truing Rolls required
a new truing device. Extensive
testing of available devices and
modifications of these devices proved that performance versatility
combined with minimum roll and operational costs could best be
achieved with a power driven truing tool.
The DYNA-TRU Device is the result of this analysis and
four-year testing.
It combines the reliability, compact size, and
operating features necessary to achieve maximum benefit in roll
truing.
This is the DYNA-TRU Truing and Dressing System. Norton
DIA-CROWN Truing Rolls used with the DYNA-TRU Truing Device.
When properly applied, this combination of value and performance
can increase production and reduce costs.
-3-
Page 5
The DYNA-TRU Truing Device
The DYNA-TRU Truing Device is the body of the truing
system. The unit has been designed for reliable performance and
rapid adaptation to a broad range of production grinding equipment.
For traverse and feed the available equipment and controls of the
grinder are employed. The positive drive of the truing wheel with
enough usable power for traverse truing provides performance
characteristics suitable for any straight face truing operation.
Shown above is the complete unit ready for installation.
The DIA-CROWN Truing Roll and mounting adapter shown as part of
the device are considered accessaries to this equipment.
pages will deal specifically with these items.
Later
-4-
Page 6
The DYNA-TRU Truing Device
Assembly and Parts List
The DYNA-TRU Device is composed of four separate
units - truing head, drive shaft, power assembly, and accessories.
These are identified as follows:
Product
Designation
DYNA-TRU Device
1)
DYNA-TRU Truing
2)
Device 48"
flexible shaft
DYNA-TRU Truing
3)
Device motor and
wiring assembly
DYNA-TRU Truing
4)
Assembly
No.
ME 83555
ME 83557
ME 83556
Device
accessory kit
ME 83558
The complete name of the component and its assembly
number must be shown when ordering.
Parts
Included
Bearing assembly
48" Flexible shaft
Motor, manual reversing
switch, motor base
Mounting wrenches
Roll gaskets
6 Vellumoid gaskets
-5-
Page 7
Page 8
Truing Device - Bearing Assembly
The picture above shows the truing head and bearing
assembly - part ME 83555. It incorporates permanently lubricated,
sealed, preloaded bearings in a heavy duty housing.
5/16 - 18P holes in the base are used for adapter mounting.
Four threaded
A
3/4" diameter precision spindle mounts 3" diameter truing rolls.
The unit is designed for reliable performance even when exposed
to excessive moisture and swarf common to production grinding
operations.
The following parts list identifies the components shown
on page 6:
Identification
A
B
C
D
E
F, J
G
H
I
K
Li
M
Parts #
E 6138839
D 6138841
E 6138838
D 6138840
E 6139571
E 6136698
E 6136699
D 6136694
E 6136696
E 6136701
Name
Wheel clamp flange and
mounting screw
DLA-CROWN Truing roll
Front water flanges
Front cap
Spindle and drive shaft coupling
Bearings
Outer
spacer
Inner spacer
Housing
Bearing lock device
Rear cap
Drive packing
-7-
Page 9
Motor and Wiring Assembly
The motor and wiring assembly (ME 83556) for the
DYNA-TRU
Device is designed for reliable performance and
maximum utility of the system.
The unit comes equipped with a 1/6 HP - 1140 r. p. m.
110 volt - 60 cycle - single phase motor,
The motor is fully
grounded and all wiring meets standards established in the J. I. C.
and National Electric Codes.
to the motor and 6
equipment.
Additional extension cords as shown in the foreground
r lead to the electrical source also comes as
A reversing switch with a 10
are available as optional equipment.
Prices are available for all
’ lead
components on request.
-8-
Page 10
Flexible Drive Shaft
(ME 83557)
A 48" flexible drive shaft is considered standard
equipment for the DYNA-TRU Device. This length provides
access to most applications.
The drive shaft incorporates a
durable yet flexible casing, and the ends are designed for secure
fitting to the motor and bearing assembly.
sealed coupling nut to eliminate contamination.
The drive end has a
Superior flexibility
allows normal operation, even when the shaft is bent to a 6" radius.
Shorter and longer shafts can be secured.
Prices and delivery are
available on request.
Accessory
Kit (ME 83558)
The accessory kit contains the following equipment:
Part #
E 6138552
Name
Drive End Wrench
Quantity
1
E 6139500
2 x 1/ 32 x 7/8" Roll
6
Gaskets
Allen Socket Wrench
(3/ 16
M across flats)
Allen Socket Wrench
(1/ 8" across flats)
1
1
This equipment is provided for use in truing roll
mounting and for attaching mounting adapters to the device.
The
drive end wrench holds the spindle stationary while the wheel mounting
screw is tightened.
truing roll provide constant clamping pressure, eliminating the
possibility
of
wheel loosening.
The vellumoid gaskets used on each side of the
-9-
Page 11
The DYNA-TRU Truing Device mounts the following size
DIA-CROWN Truing Rolls:
3x1/2 x 3/4"
DIA-CROWN Truing Rolls
3 x 3/4 x 3/4", recess one side 2\ x 1/4"
3 x 1 x 3/4", recess two sides 2\ x 1/4"
The 3 x 3/4 x 3/4"
size
All truing rolls are straight face.
is
considered standard. However, narrow rolls are employed
when truing contact must be minimized such as on hard grinding wheel
specifications. Wider rolls are used when low RMS finishes must be
secured.
Markings
DIA-CROWN rolls are identified by a simple eight-digit
code system.
DTS-L 3747
Diamond Truing Roll
Straight
___________
Face Condition
Diamond and Bond
^Composition
_____
All available NORTON DIA-CROWN rolls are of the DTS type.
Two face conditions, "R" and "L" are available.
"R"
provides maximum freeness of cut and should be used on all appli
cations where finish is of no concern or hard grinding wheels must
be trued.
" L" provides a lapped surface on the truing roll and should
be used on all applications where specified finishes must be achieved.
The diamond and bond composition of the rolls can be
varied to meet specific needs.
made with a 1/ 8" diamond section depth.
At present, all DIA-CROWN rolls are
Required modifications in
composition should be discussed with your Norton representative.
-10-
Page 12
j
Recommendations
DTS - R3747
For truing vitrified wheels on any application where
finish is of no importance and for truing all organic wheels.
3 x 3/4 x 3/4" for resinoid wheels.
DTS-L3747
For truing all vitrified wheels where finishes between
15 and 30 r.m.s.
For special applications involving nonstandard
must be achieved.
grinding
wheel specifications or workpiece requirements, consult your
Norton
representative.
Performance
The application of DLA.-CROWN rolls is restricted to
applications involving finishes 15 r.m.s. and higher.
The advantages
Use
of using this product are best shown on high production grinding
applications where heavy stock removal and maximum pieces per
dressing must be combined with size control.
-11-
Page 13
DYNA-TRU Truing and Dressing System
Where to Use
The performance characteristics of the system make
it
ideally suited for application to operations involving heavy stock
removal and high production
valent on roughing and semi-finishing operations.
. These requirements are most pre
Where increased
stock removal, maximum piece per dress and excellent size control
are primary objectives, the DYNA-TRU System can pay for itself
in operational savings.
When hard grade or wide face wheels must be trued,
the DYNA-TRU System can often pay for itself in diamond savings
alone.
The system is adaptable to manual or automated operations
involving straight face traverse type truing. On operations where
truing costs are high or on operations where increased production is
required, the DYNA-TRU System should be investigated. Those
operations where finishes below 15 r. m. s. must be achieved or
where metal removal rates are low are not suited to this system.
-12-
Page 14
Operational Benefits
The truing characteristics of the DYNA-TRU System
and the grinding performance achieved are the reasons for the
development
of
this new truing technique. It is the benefits of
the system which make it a necessary production
With proper use and care the DYNA-TRU System can
provide the following operational benefits:
1.
Increased stock removal rates
2.
Increased pieces per dressing
3.
Improved size control even on
roughing operations
4.
Reproduceable
finishes
a. Part to part
b. Dressing to dressing
tool.
Improved wheel life
5.
6.
Reduced power consumption
7.
Reduced truing time
8.
Reduced down time
Reduced diamond cost
9.
-13-
Page 15
Stock Removal and Power Consumption
Increased metal removal without affecting quality-
control is a prime feature of wheels trued with the DYNA-TRU
system. Consistent performance and the realization of full
grinding wheel potential are characteristics of this truing method.
The chart shown below illustrates these features.
10.0
P 9.0
0
w
E
Power vs Stock Removal
Per Truing
Norton CTU
57A60-N5VBE
2.55
Feed - 1 mil/sec. for 50 mil Total
Truing Infeed - 1 mil/pass on radius
x
1-7/8
5 sec. die-out
No dio-out
R
o
Single
Cluster type stationary diamond nib
*
A
Norton DTS-S3747 3 x 3/4
.375 .750
1.12
1.0
1.87
2.25 2.62
3.00 3.37 3.75
Cu. Inches of Material Removed
It can be seen from the graph that the grinding
characteristics of a wheel trued with the single point stationary
diamond and the cluster type diamond nib vary from dressing to
dressing, and that grinding power is greater than for the DIA-CROWN
Roll.
24 x 2 x 12
’
' C40 Mild Steel
pt.
stationary diamond
x
3/4
The lower power consumption common to wheels trued
with the system is indicative of increased cutting ability and a
decrease in the amount of heat generated at the point of contact.
The grinding wheel might be called "super sharp. "
These features
can result in:
1.
A reduction in workpiece distortion.
2.
Closer sizing and improved quality control.
3.
The combining of roughing and semifinishing
operations.
4.
Increase stock removal and reduced grindability
ratios.
5.
The elimination of metallurgical damage to the
workpiece.
-14-
Page 16
Diamond Cost Comparison
Valid cost comparisons
are difficult to make.
Operating
techniques, job requirements, grinding wheel specifications,
the specific
possible,
truing product used all effect diamond cost.
however, to make some comments regarding
It is
relative
diamond cost between the DYNA-TRU System and other truing
methods.
DIA-CROWN rolls can remove the following cubic
inches of grinding wheel:
Wheel
3 x 1/2 x 3/4
3 x 3/4 x 3/4
3 x 1 x 3/4
Size
Cubic Inch Life
20, 000
30, 000
40, 000
These roll life figures are based on usage under
recommended feeds and speeds using a medium grit, medium
grade grinding
wheels or hard wheels result in shorter
wheel.
Excessive feed rates, silicon carbide
roll life.
Using these figures, cost comparisons can be made
for any operation.
multiplied
by
can be used to determine
of the number of standard
of wheels multiplied
The volume of the wheel used in truing
the number of wheels required to use up the roll
DIA-CROWN roll cost . A comparison
truing tools used on a similar number
by
the cost per tool will indicate standard
truing costs.
and
Example
Wheel size 20 x 6 x 12" (16
50%
of usable wheel used in Truing - 339. 3 cu. in.
30, 000 cubic inches roll life divided by 339. 3 = 88 wheels
One nib per wheel x 88 wheels = 88 nibs
88 x $10. 00 per nib =
$880. 00
$880. 00 nib cost versus
Norton 3 x 3/4 x 3/4 DTS-L3747
i
not be unusual.
grinding
A 50% savings
However, it is the reduction in production
time, rejections,
on a
the true cost comparisons between other methods. Only actual
n diam. discard size) = 678. 6
$397. 20 roll cost for a
roll.
production
grinding
wheel costs,
roughing
etc. , which make
operation
costs,
cu. in.
would
usage can verify these savings.
-15-
Page 17
Pieces Per Dressing
The number of pieces per dressing achieved with any
grinding wheel is a direct result of three factors:
1. The grinding wheel specification
2. The operating techniques
3. The dressing method and product employed
Sometimes the grinding wheel may be changed to improve
pieces per dressing, but only to a limited extent.
operations
conditions are fixed, i. e. , stock removal, part size, etc.
On most production
The most marked changes in performance can be accomplished through
the use of proper truing products and methods.
The DYNA-TRU method of truing conditions the grinding
wheel for maximum pieces per dressing by:
a. Minimizing the damage to the abrasive bond posts
resulting in reduced rates of wear.
b. Conditioning each abrasive particle to maximum
sharpness resulting in reduced abrasive dulling
and pressure build-up.
The many small diamond particles cut rather than
fracture the abrasive grains of the grinding wheel. Minimum stress
is applied to each abrasive grain maintaining maximum sharpness
without bond strength loss.
grinding wheel breaks down less rapidly and grinding pressures
The primary cutting surface of the
are minimized.
Since the condition of the truing roll remains constant,
dressing pressures and wheel condition are the same from dressing
to dressing. This results in uniform production rates and repeatable
results. Truing variables are minimized.
Grinding wheels which are trued with the DYNA-TRU
System perform at peak efficiency.
Size control can be improved
and maintained. Finish control is consistent and stock removal
rates kept at a maximum without wheel breakdown.
Actual testing has produced up to a 50%
increase in
pieces per dress with no change in quality control. This can mean
reduced grinding wheel costs, increased production,
and improved
quality.
-16-
Page 18
Finishi
ng Characteristics
The DYNA-TRU System is not a "Finish"
By this we mean that low surface
are difficult to achieve.
We do not mean, however, that the method
cannot be used for "finish grinding.
finishes, i. e. , 15 r.m. s. and lower,
"
The DYNA-TRU System cannot produce
It produces an extremely free-cutting sharp surface on the abrasive
truing technique.
a
dull grinding
wheel.
wheel regardless of feed or traverse. Since finish achieved is a direct
result of the abrasive grit size used and the condition
after truing,
finishes
10 to 15 r. m. s.
higher than for normal
of
these particles
truing
are characteristic of the System.
Through
(finer and/or harder)
finishes
as
low as 15 r. m. s. can be achieved on many materials.
This means that for finishing
finishes
must be achieved, the DYNA-TRU System should not be used.
a
modification
and the use of proper grinding
operations
in
the abrasive specification
where very low r.m. s.
techniques,
Historically, size control in grinding had to be considered
as a function of finish. Now size control can be achieved without
specifying extremely low surface finishes. Dimensional control and
consistent finishes
can be achieved even under heavy stock removal
conditions.
Controlled Finishes
uniform from dress to dress and
piece to piece are characteristic of the DYNA-TRU System. Through
the use of proper truing technique
can be controlled.
Note in the picture below the difference in finish
and grinding
specification, finishes
on the two parts.
Both parts have the same r. m. s. finish,
piece has been ground with a " DYNA-TRUED"
in grinding
was similar. This illustrates the difference in rough truing
between the DYNA-TRU and conventional truing methods.
of finish,
no
irregular
breakup
of
the wheel face and maximum
but the upper
Wheel. Power consumption
Uniformity
freeness
of cut.
Low finishes?
No. Controlled
-17-
Finishes? Definitely!
Page 19
Recommended Operating Procedures
1. Be sure the face of the grinding wheel and the face of the
truing wheel are parallel to each other. A .feeler gage placed
between the roll face and the wheel face is helpful in checking
parallelism.
2. Tighten all connections securely and be sure that the truing
wheel, when mounted is running in good truth.
3. Make sure that the truing wheel rotation is in the same direction
of rotation as the grinding wheel, so that at their point of contact
they are opposing each other.
4. Mark the reversing switch at the position for proper rotation.
Make sure proper rotation is achieved when starting the device.
Make sure the device is "on" when contact is made with the
5.
grinding wheel.
6. Adjust the traverse stroke periodically to insure the device does
not contact the wheel guard of the machine on the exit side when
the grinding wheel approaches stub size.
7. To obtain maximum efficiency from the flexible shaft, maintain
a smooth curve if bending is necessary.
8.
Cable support hooks should be located so as not to allow the
flexible shaft to be bent directly at the motor or at the device
coupling.
-18-
Page 20
9. When truing wide face wheels, make sure that the flexible
shaft has enough support so that it does not come in contact
with the grinding wheel when the shaft is extended.
Infeed truing rates in excess of . 001
10.
are definitely
improve
not recommended. Excessive feeds do not
the cutting performance
M on the wheel radius
and result in excessive
truing wheel wear.
11. Always true with some coolant at the area of contact.
truing results
12.
The device should not be used over extended periods
without periodic
should be tightened and adjusted
in
excessive wheel wear.
checks on connections and mountings.
at
least once per month.
of
Dry
time
These
13. Truing traverse should not be restricted to slow or medium
rates of feed.
The advantages of the device and optimum
cost
savings can be realized when maximum
commensurate with finish are employed.
14. When mounting
the truing roll on the truing head:
a) Mount the wheel recess side in.
b) Use a wheel blotter
only on the outside of the
truing roll.
c) Use a new mounting
d) Tighten the mounting
screw for each new truing roll.
screw with enough pressure to
securely lock the wheel in place.
-19-
traverse speeds
Page 21
Application and Adaptation
The DYNA-TRU System is designed for centerless,
cylindrical, and surface grinding operations.
The concept of
the technique and the design of the components were based on
application to these grinding operations.
In order to integrate all the known operational
requirements into the design and to make the unit adaptable
to this range of equipment at low cost, it was found that some
grinding machine adaptation and alteration would be necessary.
Grinding machines are not always standard in specific design
or size. Space restrictions in the adaptation and the use of
the device had to be considered.
The DYNA-TRU System employs the basic feed and
traverse controls of the grinder involved. The truing head
ME 83555 provides for the application of an adapter through
four bolt holes in the base.
The adapters mount and lock the
head on the truing post, or table, for truing. The drive motor
ME 83556 is placed outside the truing area and power is
transmitted to the head through the flexible shaft ME 83557.
The areas for consideration in determining the difficulty in
adapting the DYNA-TRU System are:
a. The space which can be made available between a
full-sized grinding wheel and the end of the
mounting post. (32
M minimum)
b. The space between the side wheel guards and the
grinding wheel which can be made available for
traverse motion.
(7/8" on one side - 5" on the
other side).
c. The accessibility of the flexible drive shaft
to the truing area.
d. The necessary machine alterations or parts, i. e. ,
risers, ports, slots, etc. , required to mount
and use the system.
The amount of difficulty involved in adapting the system
varies from machine to machine.
Later pages will deal with
available conversion and adapter kits, the use of this equipment,
and future planning for new equipment.
-20-
Page 22
Mounting Adapters
The following adapters are available from stock as
accessories to the DYNA-TRU Truing Device.
Part Name
Centerless Adapter
Part Number
ME 83577
Application
For use on
Cincinnati #2
or #3 Model EA-O M
machines only
Surfacing Table Adapter
ME 83576
For use in table
mounting the device
on horizontal spindle
surface grinders
The Centerless adapter (B-
136557) is mounted to the
device by four 5/16 - 18P cap screws. The device fits over
the end of the truing post and has a coolant take-off tube for
transmitting coolant to the truing roll during truing.
A traverse control stop (D137817) is shipped with
the adapter. The stop fits over the truing slide traverse stop
plug and can be used to adjust the length of truing stroke on the
exit side of the machine. This eliminates the possibility of
running the truing roll into the side guard as the wheel nears
stub size.
The surfacing adapter provides a flat surface for table
mounting on magnetic chucks. It is attached to the device in the
same manner as the centerless adapter. This adapter can also
be used for mounting the device on cylindrical machine footstock
or table mounts of a users own design.
Adapters for machines other than those mentioned are
being designed.
However, the design of the device provides
for
mounting of adapters of any design. Users can design and build
simple adapters at low cost for a variety of equipment.
-21-
Page 23
-22-
1
Page 24
Conversion Kits
The following conversion kit is available from stock:
Assembly #
Part Included - Part #
Outside Wheel Guard - B137304
A.
Application
Parts to convert
a Cincinnati #2
ME 83575
B.
"Bubble
11 Truing Traverse
Model EA
Slide - B137303
Traverse stop from adapter
C.
kit
D and E.
Cable Support Hooks -
E138126, El
38229
Centerless
Grinder
The kit provides the revised equipment required to
mount and use the device on standard Cincinnati #2 Model EA
grinders.
mately three hours.
standard size of the grinder involved.
The installation of this equipment takes approxi
Caution should be taken to insure the
Variations do occur.
In this case, the equipment can be used as a model for revising
existing equipment. Actual installation time would be the same,
however, once the necessary revisions have been made.
Guard
B137304 provides a reinforced shielded guard
with access port for the flexible shaft and increased space for
traverse motion on 8" wide centerless wheels.
The "Bubble Housing" (B1
37303) provides increased
space between the end of the truing post and a full sized wheel.
It replaces the existing sheet metal slide used over the truing
post traverse slot.
The support hooks control the path and bend of the
flexible cable. They help to maintain freedom from normal
vibration and shaft wear.
Conversion kits for other centerless machines and
a range of surface and cylindrical grinding machines are being
designed.
would be modified to adopt the device.
problems may be referred to Norton Company,
Until this equipment is available, existing equipment
Specific application
Abrasive
Division, Product Engineering Department for analysis.
-23-
Page 25
-24-
Page 26
Conversion Kit ME 83573
Installation
The picture on the opposite page shows the conversion
kit for a Cincinnati #2 Model EA centerless grinder completely-
installed. The guard port cover (see picture previous page) has
been left off to show the device. Note the drive motor at the
rear of the machine, the flexible shaft supported by hooks and
the device in position for truing. The following steps are required
to make such an installation:
A.
Remove standard guard, grinding wheel, and truing
slide cover.
B.
Mount new guard, measure for cut-out of tie bar
and remove guard.
C.
Cut tie bar at end of truing traverse slide, drill
and tap five mounting holes for new guard.
D.
E.
F.
Retract truing post and mount new traverse slide.
Mount the grinding wheel and the truing device.
Adjust the truing device to insure parallelism
between the roll face and the grinding wheel.
G.
H.
Attach the flexible shaft and mount outside guard.
Attach shaft to motor, adjust cable support hooks
and mount the traverse stop.
I.
J.
K.
Li.
Start the device.
Mark starting switch for M on-off
Start grinding wheel and coolant.
Bring the device into contact with grinding wheel
and remove high spots by truing at . 001 M feed
and 24
M per minute traverse.
Finish true at desired rate using . 0005" feed
per pass;
adjust for part size and start grinding.
Make sure rotation is proper.
n position.
Installation on other machines would be similar.
Once installed, the unit is ready for months of truing without
a required roll change.
-25-
Page 27
i
r
1.
2.
(A)
How to Order
The following apply to ordering:
Specify assembly numbers for each part required.
Separate DYNA-TRU Device components from
DIA-CROWN Truing Rolls, adapters
version kits.
All items can be specified on a single order.
Examples:
1 - DYNA-TRU Truing Device including bearing
assembly ME 83555, motor and wiring ME 83556
flexible drive shaft ME 83557 and accessory kit
and con
(B)
ME 83558.
1 - DIA-CROWN Truing Roll 3 x 3/4 x 3/4" ME 83195
DTS-R3747.
1 - Surface Grinding
1 - DYNA-TRU Truing Device including
ME 83555, flexible shaft ME 83557 and accessory
kit ME 83558.
1 - DIA-CROWN Truing Roll 3x1/2
DTS-L 3747
1 - Centerless adapter
1 - Conversion kit for Cincinnati #2 Model EA
Adapter ME 83576
ME 83577
bearing
x
1/2" ME 82679
assembly
ordering
modifications
centerless grinder
The assembly units available cannot be broken up, i. e. ,
an
adapter without the traverse stop.
of
existing parts must be referred to your Norton representative.
ME 83575
-26-
Any special items or
Page 28
Replacement and Repairs
Due to extended usage, replacement of parts, or the
repair of some parts, may be required. All major components
of the DYNA-TRU Truing Device can be replaced.
Only the
truing head can be returned for repair.
When return for repair is required, your Norton
representative, or Norton Company,
soon as possible.
A rebuilt unit will be sent to you immediately.
should be contacted as
The used unit should be returned to the Sales Service Department,
Norton Company,
Abrasive Division, Worcester, Massachusetts.
Replacement and repair charges may be determined
by referring to price sheets enclosed.
Pricing Information
All pricing information on products described in this
manual is included on the enclosed price sheets.
Prices for special parts or products
not included are
available on request. All specification and design requirements
for these parts must be included with the request for quotation.
Refer to Norton Company,
Abrasive Division, Worcester, Mass
achusetts.
-27-
Page 29
DTA-CROWN Truing Nibs
:
Now,
machines used for tool room
for truing and dressing wheels on those grinding
and conventional production grinding,
you can get reliable diamond dressers
DIA-CROWN Diamond Cluster
Nibs.
These multiple diamond dressers from Norton last
longer, dress more consistently. . .yet the extra value costs you
no more
And with the Norton name on a nib, you know you
1 re
getting the full diamond value you pay for.
qj
^-CROWN Nibs last longer because the diamond particles
are imbedded in the durable bond by an exclusive process - spaced
uniformly as if set by hand. The grinding wheel is identically sharp
and free-cutting after every dressing, always grinding workpieces to
the same fine tolerances and finishes.
Designed for table-type truing and dressing fixtures, and
for automatic fixtures that mount in the wheel guard, DIA-CROWN Nibs
are available in a variety of styles with diamond particles distributed
evenly by the unique Norton process:
Round-head nibs
Square-head nibs
Profile (blade) nibs
Start getting diamond dressers you can depend on - from
the company that knows most about what's best for a grinding wheel.
Order DIA-CROWN Nibs from your Norton Distributor.
DIA-CROWN Nibs
ft
Code No.
T14667
T24667
S
14667
S34667
Diamond Section
Size/Angle
VaxYzxW'115°
%
2xV4X%'715°
V4X^6X%'70°
%X%X%715°
Shank Dia./
Mounting Lgth.
V,6X%"
7
/Uxl"
7
/,6xy,6"
7/6X3/4"
Recommended Use
Centerless
grinders with
angular truing
Centerless or
cylindrical profile
and form
Centerless and
cylindrical
grinders
Cylindrical
grinders with
foots tock truing
truing
g
R14667
Va
dia. x y470°
7
/i6Xl^6"
General purpose
-28-
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