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General
The Self Aligning Machine
Adjustable Reamer (SAMAR) is developed to fulfill the
requirement of micro adjustable reamer.
Outstanding features of this reamer
are :
a) It covers a wide range of sizes within one reamer.
b) It has replaceable tungsten carbide tipped cutting
blades.
c) It has a positive constant float through-out the
range
d) The Float is at the cutting end eliminating special
floating tool holders.
e) It is easy to set size in the machine itself.
f) No Special wrenches or tools are required for setting.
g) Two bladed construction, with diametrically opposed
blades fully supported over the width of blades allows,
i) Greater Coolant and chip
passage.
ii) Lower Cutting Pressure
iii) Cooler cutting permitting closer tolerance
and finer finish of the bore.
Construction
of SAMAR
The blades have a diagonal key-way in each. This
forms 'X' when they are assembled. A diamond guide is
located within these key-ways. The pair of blades with
the diamond-guide which has an elongated hole in position
between the blades is assembled in a carrier where they
are held by guide pin. This pin in Conjunction with
the elongated hole in the diamond determines the float
of the blades in operation. The carrier is controlled
in its longitudianl movement by means of carrier pin
which is positioned between the Adjuster and lock ring.
When this assembly of rings is rotated along the micrometer
threads on the shank body, carrier responds by moving
the diamond guide in its key-way thus expanding or retracting
the blades.
SETTING
SIZE
Use micrometer to check over blades. Rotate the
ring assembly till required size is obtained. Adjuster
ring with micrometer reading can help obtaining the
correct size quickly. Then lock the position by lock
ring. Each division of the micrometer reading on Adjuster
ring is 0.02 m.m.
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A micrometer
is used for
setting blades to the
required dimension.
Reaming allowance
recommended
0.12 mm. to 0.17 mm. |
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The micrometric
scale
permits very fine
adjustment of blades to
correct size.
Each division adding or
reducing 0.02 mm.on the
diameter |
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First
four sizes covering
13.00 mm to 19.00 mm
are provided with Tungsten carbide Tipped blades
for reaming through
bores only. Extended blades for blind bore are not
provided in this range.
The range of 13.00 mm to 300.00 mm is covered by
21 SAMARS |
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Instead
of Morse Taper,
parallel shank can
also be supplied on
specific demand.
Additional lenth of the
bore can be achieved by
using extension sleeves
17 SAMARS can be fitted with Blind Bore Blades also. |
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