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The above rig
comprises of a
CI base (1.5mtr
x 0.75 mtr) with
approx. 2.5" in
height with
supporting ribs.
The base duly
hardened shall
be a table top
model. Two GUIDE
RODS of EN 35
material
(approx. 1.5 mtr
long) and
another guide
rod (of approx.
0.75 mtr) for
traversing in
perpendicular
motion (for
switching over
to the next test
track) shall be
mounted on these
supporting ribs.
The test rig
shall have a
provision of 10
test tracks of 1
meter long with
a RUNNER (in the
form of Cast
Iron Bracket
mounted on the
Guide rod/s) for
traversing the
TEST TRACK
length. This
travel of the
runner shall be
mounted on 6 nos
linear motion
bearings. The
runner travel
shall be
accomplished by
2 x ¼ HP AC
electric motors
(with a single
speed – 40 rpm
gear box)
mounted on the
bracket for
traversing in X
& Y directions.
The user shall
have the option
of pre-selecting
the speed of the
travel by means
of a AC variable
drive (to be
provided by the
customer).
A series of
MICRO SWITCHES &
a timer (mounted
at the end of
the each test
track) shall
guide the runner
the length of
the test and
that the user
shall have the
option to
reverse the
motion (in X) or
to go for the
fresh test in
the next
subsequent
track. The motor
shall be coupled
with a 1.5 pitch
gear box to
produce 40 rpm
speed for
traversing in
both X & Y
directions.
There'd be a
lifting
arrangement at
the end of the
track (of the
upper specimen
holder) in the
form of a
solenoid valve.
A specimen
holder shall be
mounted on the
RUNNER bracket
with a tool to
accommodate
different
geometries/shapes
of the upper
"POLYMER
SPECIMEN". This
holder shall
have a in-built
HEATER to heat
the upper
specimen to 300
deg C (the
temperature
indicating
controller to be
provided by the
client) and a
strain gage LOAD
CELL (mounted on
the top of the
Specimen holder)
to measure the
FRICTIONAL FORCE
(f).
The test rig
shall have a
provision of
tightly clamping
the Abrasive
Cloth/Paper on
both the ends
and a 1" deep
bath for wet
lubricating
environment. |