Buehler ISOMET Low Speed Saw Manual

Operation and
Maintenance
Instructions
/SOMETTM Low Speed Saw
©1992 BUEHLER LTD.
Printed in U.S.A.

r
{})ecfaration of Conformity
Manufacturer:
Of:
®A
BUEHLER, Ltd.
41 Waukegan Road
Lake Bluff, Illinois 60044
Declares the following product: /SOMET n.t LOW SPEED SAW
To be in accordance with EC Directive(s);
Safety of Machinery: EMC Directive:
89/392/EEC and 91/368/EEC and 93/44/EEC
according to the following standards: 89/336/EEC and 92/231/EEC according to the
following standards:
EN 292 PART 1 1991
EN 292 PART 2 1991
EN 60204 PART 1 1993
Position: Director of Engineering
Name: Chuck Motley
Signature:
Cliuc~9rtotfey
EN 50081-1: 1992
EN 50082-1: 1992
Date: 111197
This Manual is a custom generated document. It includes all revisions
relative to this specific Buehleritem
as of the date shown below.
MA111280-11 1113/99
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TABLE OF CONTENTS
DESCRIPTION PAGE
Warranty.......................................................................................................................................2
Unpacking .................................................
.. .................................................................................2
Assembly......................................................................................................................................2
Installation ....................................................................................................................................3
Location....................
.. .............................................................. .. .....................................3
Electrical.......................................
.. ... .... ..........................................................................3
Blade Installation.............................................................................................................4
Lubrication
.. ............................................... .. . .. ..............................................................................5
Operation...........................
.. .........................................................................................................6
Loading the Saw..............................................................................................................6
Adjustment
of Cut-OffSwitch Mechanism.......................................................................6
MicrometerAdjustment and Weight Selection ................................................................7
Cutting the Specimen......................................................................................................7
Maintenance...............
.. ........................ .. .......................................................................................9
Motor
or Drive Belt Replacement........................... .. .......................................................9
Micrometer Screw Adjustment ..................................................................
~ ..................... 11
Replacement or Exchange of Micrometers..................................................................... 11
General Specifications .................................................... ... .. ....... .. ............... .. .................12
Hot Cell
or Glove Box Use ...........................................................................................................12
Exploded Assembly Drawings......................................................................................................13
Electrical Connection Drawing ......................................
.. ... ......... .. . ... ...........................................20
Packaging Drawing ..................................................
.. ....................... .... ....................................... 21
Parts List ......................................................................................................................................22
Accessories and Supplies.....................................................................................·.......................24
ISOCUT ®Wafering Blades ............................................
.. ............................ .... ................26
Notes: ....................................................
.... .................... .. .............................................................28
MA111280-11 1113199

----- -- - ------ -------------- ---------------------- ----
OPERATION AND MAINTENANCE
INSTRUCTIONS
BUEHLER®
ISOMET™ LOW SPEED SAW
Warranty
Unpacking
Assembly
MA111280-11
This unit is guaranteed against defective material and workmanship for a
period of two (2) years from the date of receipt by customer. Warranty is
void if inspection shows evidence of abuse, misuse or unauthorized
repair. Warranty covers only replacement of defective materials. If, for
any reason, this unit must be returned to our plant forwarranty service,
please apply for prior authorization with shipping instructions, and include
the following information: Customer Purchase Order Number, Buehler
Ltd. Invoice Numberand Date, Serial Number, and reason for return.
Carefully unpack and check contents. If any components are missing or
damaged, save the packing list and material and advise the carrier and
Buehler®, Ltd.
of the discrepancy.
The ISOMErrM Low Speed Saw is shipped fully assembled except for a
Diamond Wafering Blade and Dressing Stick which are packed
separately in the same box. Three Chucks, Weights, Weight Shaft,
Counter-Balance Weight, Balance Weight Shaft, two (2) Allen Wrenches,
a SpannerWrench, and an optional Chuck mounting screw are packed
separately
in the Lubricant Pan which is accessible via the dooron the
right panel. (See Accessories)
2
1113/99 I

Installation
MA111280-11
Figure 1
Location
The ISOME"fTM is intended for bench-top placement. Select a convenient
location with access to a grounded type electrical receptacle rated for
voltage, hertz and phase indicated on the Specification Plate located at
the base
of the rear panel.
Electrical
Consult Specification Plate for proper voltage for the unit. All units are
equipped with an IEC cord connector . Appropriate cord for country of
use is supplied.
3
1113/99

MA111280-11
Blade Installation
To install the Blade on the
ISOMETTM perform the following steps:
1 Remove Thumb Screw, End Cap Bushing and
Outer Flange from Drive
Shaft.
2. Install blade on Drive Shaft against Inner Flange relieved surface.
3. Slip on Outer Flange and End Cap Bushing, then hand tighten Thumb
Screw to complete installation.
Drive Sha ft
Waf e rin g
Blade
Outer Fla nge
Thumb Scr ew
Figure 2
Note: Smallerflanges must be employed when the 11 -1188 Chuck is
used for thin sections,
or the 11 -1189 Chuck for 1" and 1 114" dia.
specimens.
If gang-sawing is desired, several Blades may be installed, with
appropriate spacers, followed by installation
of the Outer Flange, End
Cap Bushing and Thumb Screw as previously described.
Flanges provide support for the wafering blades. Failure to provide
adequate flange support may result
in curved cuts and damaged blades.
Always select the maximum flange diametercommensurate with the size
of the specimen to be cut.
Note: Before reinstallation of a Wafering Blade, the End Cap Bushing,
Screw and Flanges shouldbe cleaned in a mild detergent solution to
remove adherentparticles from previous sawing. This will help prevent
misalignment of Blade and resultantpoor-quality cuts.
New Wafering Blades, including the original equipment Blade, must be
dressed before making sample cuts. Dressing removes normal smeared
matrix metal and exposes the abrasive grain to assure free cutting. New
Wafering Blades should be dressed several times and older Blades
dressed as required by the properties
of the sample material. When
cutting metal samples it may be necessary to dress after each cut.
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11 /3/99

Lubrication
MA111280-11
To dress, position the Dressing Stick in the 11-1187 Saddle Chuck and
make thin transverse cuts through the Dressing Stick, or use a 11-1196
ISOMETTM Dressing Chuck. (See Accessories)
Use
of this device permits dressing to be performed without removing a
previously fixtured sample.
CAUTION -Feeding the Dressing Stick or any sample materials
manually into the Blade could result in damage to the Blade.
The
ISOMETTM employs the "drag" principle of lubrication with the
lubricant carried to the sample on the periphery
of the Blade. ISOCUT®
Fluid reduces cutting time and produces superior quality cuts. Its use
promotes effective lubrication which allows the diamond particles to cut
clean ly. It minimizes Blade loading by the formation of discrete chips and
effects their clean release from the Blade and work surface.
Fill the Lubricant Pan with 11-1193-032 ISOCUT® Fluid to a level that will
immerse Blade approximately 1/4". ISOCUT® Fluid is best for most
metals and many non-metals. When the lubricant becomes
contaminated with sludge it should be discarded and replaced.
To remove Lubricant Pan, lift
off Door on right side of Saw, grasp Knob
on Slide Lock, pull Slide Lock outward until lock disengages, lowerthe
Lubricant Pan Tray and then swing it outward. This will swing the tray
outside the case and permit removal and emptying of Lubricant Pan.
Clean Pan and Specimen Basket thoroughly and replace in Tray. With
Slide Lock still pulled out, swing Tray inward to stop. Press Slide Lock
inward to stop and then, while maintaining light pressure on Slide Lock lift
Tray upward until Slide Lock engages. Press Slide Lock tully in to secure
Tray. Refill with fresh lubricant.
D oor
Figure 3
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11 /3/99

Operation
Loading the Saw
Loosen the Set Knob and slip the Counter Balance Weight to the rear of
the Counter Balance Weight Shaft to hold the Support arm in an upright
position. Select the proper Chuck for the particular application and clamp
the Specimen in place. It may be necessary to sandwich strips of metal
between the Specimen and Chuck, or to improvise in other ways in order
to clamp certain odd or irregular shaped samples. Attach the loaded
Chuck to the Support arm with the Chuck Mounting Thumb Screw (If a
larger Chuck is being used or a heavyspecimen is being supported in the
Chuck the optional SocketHead Cap Screwcan be used to mountthe
Chuck using the supplied Wrench). After the Chuck is secured, move the
Support arm to the far left by adjusting the Micrometer Head. Slide the
Counter-Balance Weight toward the front of the unit until balance is
achieved and tighten the Set Knob.
Weight Shaft
150g Weight .J ~ 25g Weight
75g Weight____>--J ~
50g Weight__;>-..}
Cut-Off Switch
Adjusting Thumb Screw
Counterbalanc
Weight
Shaft
humb Screw for~
Counterbalance
Weight
Chuck Mounting
MA111280-11
Support
Mi crometer
Cut - Off Switch Arm
Adjustment of Cut-Off Switch Mechanism
Set the Thumb Screw
in the SupportArm to shut offthe Saw by
depressing the Cut-Off Switch Arm, either at the completion of the cut or
just before completion. The latter setting allows a weight reduction
before the cut is completed and thereby prevents possible burring
or
cleaving of fragile materials near the end of the cut.
6
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MA111280-11
Micrometer Adjustment and Weight Selection
Adjust the Micrometer to position the Specimen for cutting. Weight can
be applied to the work in increments of 25 grams by proper selection of
the fourWeights supplied with the unit. Intermediate Weights can be
applied through careful adjustment of the Counter-Balance Weight at the
rear of the SupportArm. In general, since the heavier the load the
greater the surface damage to the Specimen, relatively light weights are
recommended.
Note: Care should be taken during the loading operation not to nick the
blade or drop the specimen on the blade edge.
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F1gure 5
Cutting the Specimen
Adjust the Speed Control Knob to the desired speed while holding the
Specimen Arm by hand above the Blade, Since faster speeds, like
heavierweights, tend to damage the Specimen surface, the operator
mustdetermine the relative importance of cutting time and surface
conditions in each case. Settings of about 200 RPM are recommended
for general use. (Approximately 6-7 on the Speed Control.)
Place the 111182 Blade Wiper as shown in Figure Sa with the "drip lip"
down. The brushes on the Blade Wiper should be contacting either side
of the Blade for most of their width. Be sure not to allow the Blade to cut
the metal "drip lip" on the Blade Wiper. The Blade Wiperwill remove
excess cutting fluid from the Blade while still allowing enough fluid to be
applied to the cut to lubricate it.
After the Speed Control is set, press the Start Button and carefully lower
the Specimen Arm onto the Blade to commence cutting. The Cutting
Light will come on when the Start Switch is pressed. (The Blade will not
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11/3/99

•
MAl11280-11
startturning until the Speed Control Knob is set above the Zero setting.)
When the cut is completed, the Cut-OffSwitch Arm is automatically
depressed which, in turn, lights the Complete Light and stops the Saw.
The Power Switch on the back
of the ISOMEf'TM is also a 2 pole circuit
breaker providing protection for the unit
in the event of overload.
Continual tripping of the circuit breaker indicates that a problem exists
within the unit.
Figure Sa
8
111182
Blade Wiper
1113199
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