Carbide single roller burnishing tools (SR series)
Plunger Type Single Roller Burnishing
Tools (SRP typer)
Outside-Surface
Single -Roller Burnishing Tool
(SRL type)
Multi-Surface –Single Roller Burnishing Tool (SRl
series)
Diamond Burnishing
Tools (DB series)
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Plunger Type Carbide Single Roller Burnishing Tools (SRP series)
- Are
adaptable for use on lathes screw machines. VTL machines NC & CNC
machines , machining centers and turning centers.
- Produce
high quality 5 to 8 microinch (0.13-0.20 um) finishes.
- Save
machine time and set-up costs through single machining operations.
- Have
feeds and speeds comparable to -turning tools.
 Single
-Roller Burnishing Tools not only can burnish a linear O.D. surface but they can
also finish any O.D. surface configuration containing contours, fillets, radii
and grooves. And with the speed of a cutting tool to a 5 microinch (0.13 μm)
finish. They can also burnish large I.D. surfaces with the same microinch
quality by simply mounting the tool on a boring bar. Plane surfaces are even
easier to roller burnish since burnishing can be accomplished in both directions
(right-to-left then left-to-right). If the burnishing is accomplished at the
machine cutting speed it can be done in half the time usually required.
Custom design
Most
Single Roller Burnishing Tools are individually designed and manufactured to
customer specifications. Yet each tool can be mounted on standard machines, such
as VTL machines, screw and boring machines, thereby eliminating the need for any
additional investment. The Custom design compensates for machine speeds tooling
requirements and non-linear surfaces.
The Single roller
burnishing tool consists of two parts : 1) a spring-loaded head assembly and 2)
a shank. The head assembly contains the Single -roller, its friction and thrust
bearings, an axle, washers and the necessary hardware to make it functional. The
assembly is then spring loaded to its shaft, making the head a floating tool.
The radius of each burnishing roller is individually
designed to conform to the profile of the work piece to be finished. However it
should be kept in mind that the roller radius also affects feed rate. Many head
assemblies are manufactured to individual product specifications supplied by the
customer. Drawings of the turret or tool holder should be furnished with a
request for quotation.
We manufacture both right-to-left and left-to-right
Single Roller burnishers as well as plunger or vertical type burnishers for
linear surface finishing.
The design is such that the Single Roller burnishing tool
functions with the work piece rotating, and best results can be accomplished on
metals where the hardness does not exceed 40 Rockwell “C”.
Single Roller burnishing tools are ideal for use on
Numerically Controlled (NC) and Computer-Numerically-Controlled (CNC) machines
since they can be programmed to burnish through non-linear surfaces.
Single-roller
burnishing applications are virtually unlimited
The ideal applications for the Single-roller burnishers
are shafts and cylinders of non-uniform cross section. Shafts with radii,
fillets and grooves, and cylinders with undercuts, tapers and contours are
perfect applications. They can be finished in single machining operations,
thereby saving machine time and set-up costs.
Another successful application is the burnishing of axles
and shafts requiring high-quality finishes.
Outside-Surface
Single -Roller Burnishing Tool
(SRL type)
·
Save machine time and set-up costs by burnishing a variety of part
surfaces with one tool.
·
Suitable for most NC/CNC turning centers.
·
Produce high-quality 5 to 8 microinch finishes (0.13-0.20 um)
·
Burnish at feeds and speeds comparable to cutting tools.
·
Improve part wear through cold working.
Now you can
burnish all outside surfaces with one tool
The Outside-Surface Single -Roller Burnishing Tool is
designed to be mounted in the turret of an NC/CNC turning center. The path of
the burnishing tool is then programmed to be identical to that of the cutting
tool used prior to burnishing. The Outside-Surface Tool has a 1-inch square
shank for turret mounting. Tools for both right and left-hand feed applications
are available.
A 5 to 8 microinch finish is practical at a feed rate
double that of the cutting tool, Speeds consistent with good machining practices
are recommended, Coolant is recommended for improved tool life.
Burnishing
multiple surfaces after turning operations
The Outside-Surface Tool consists of two parts:
1)
a spring loaded head assembly and
2)
a shank
The head assembly contains the -roller, its friction and
thrust bearings, an axle, washers and the necessary hardware to make it
functional. The assembly is then spring-loaded to its shaft, making the head a
floating tool.
The illustration shows a part with multiple surfaces
being burnished automatically after the turning operation. The Outside-Surface
Tool has built-in offset for roll and part centerline alignment so that the six
different surfaces shown in the illustration can be easily burnished.
Multi-Surface
–Carbide Single Roller Burnishing Tool
(SRl
series)
·
Save machine time and set-up costs by burnishing multi-surface
parts on NC/CNC machines with one tool.
·
Produce high-quality, 5. To 8. micro-inch finishes (0.13-0.20μm).
·
Burnish at feeds and speeds comparable to cutting tools.
·
Improve part wear through cold working.
 Now you can
burnish ID’s, OD’s, fillets or contours, shoulders & bar ends with one
tool
The Multi-Surface Single Roller Burnishing Tool is
designed to be positioned in the boring station of an NC/CNC machine. The path
of the burnishing tool is then programmed to identical to that of the cutting
tool used prior to burnishing. The Multi-Surface Tool has a unique design which
permits the burnishing roller to be spring loaded in two directions. This allows
the roller to exert a uniform pressure on the part regardless of the part’s
shape. The result is a uniform low micro finish.
Most outside diameters, bar ends & inside diameters
greater than 2.5 inches can be burnished automatically after boring or turning.
In addition, fillets, contours, radii or shoulders can be automatically
burnished by machine programming.
A 5 to 8 microinch finish is practical at a feed rate
double that of the cutting tool. Speeds consistent with good machining practices
are recommended. Coolant is not required, but is recommended when used for other
machining operations.
Perform multiple
burnishing operations just as you would cutting operations
The illustrations show a part being burnished
automatically in stages.
In illustrations #1, the inside diameter is being
burnished.
In #2, a fillet between the inside wall and the part
bottom is being burnished.
In #3, the part end is being burnished.
In #4, a shoulder is being burnished.
Of course, the OD beyond the shoulder would be the next
surface to be burnished.
·
For most surfaces under 40Rc. The tool can be used on hard
surfaces upto 62Rc
·
Diamond stem is an economical throw away
·
For use in linear surfaces
·
For normal burnishing applications where tool can be positioned on
center at 90 degrees to centerline.
 The Diamond Burnishing Tool is made with a selected
diamond suitable for burnishing machined or ground surfaces to a 2 to 8 micro
finish on most metals. Cast iron can also be diamond burnished to between 8 and
15 RMS.
The Diamond Burnishing Tool is designed for use in the
tool post of a lathe or similar machine. The tool holder should be set in the
tool post so that the diamond contacts the work at the center of the shaft or
part and at 90°
angle to the surface of the shaft or part to be burnished.
Tool set up
The diamond stem is mounted in the holder under spring
tension with an approximate 0.250” override. It is suggested when setting up a
job, you bring the diamond against the work without the spindle running, feed
the tool into the work until you compress the spring approximately 0.230”,
then back off the tool approximately 0.031” to allow for a free float of the
diamond in the holder. Do not compress diamond stem and spring until solid.
Diamond failure may occur.
Since the tool is spring loaded, it is necessary that you
feed the tool against the surface being finished and remove the tool from the
surface being finished. Do not try to feed the tool on or off the work or do not
try to use the tool for finishing intermittent surfaces.
Part preparation
A finish of approximately 80 to 100 RMS. should be
machined or ground on the part prior to burnishing. This can usually be
accomplished with a cutting tool having a 1/32” radius on the cutting edge
with a feed rate of 0.006” to 0.008” per revolution. For cast steel parts, a
slightly larger radius and a slower feed is recommended.
Machine feed
& speed setting
Usually
the Diamond Tool is fed at one half the feed of the cutting tool although the
finish required will have some bearing as to the correct feed needed to produce
satisfactory results. To produce a 5 to 8 micro inch finish with the Diamond
Burnishing Tool, set the machine at a feed rate of approximately 0.003” to
0.004” per revolution with a speed up to 750 surface feet a minute or less,
depending upon the machine capability. Be sure to start the rotation of the
spindle and the feed at the same time. If you start the spindle running and do
not engage the feed, the tool will leave a mark on the part.
Coolant required
A coolant of any type that is on the machine may be used.
Do not run the tool without coolant.
For additional or more specific information, please
furnish print with complete details and, if possible, proposed part preparation.
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