Operational Manual - DCU

Ta Torsion Testing Machine
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3.
Slide the cylindrical spacer over the specimen and
onto the spigot on the right-hand end clamp.
Place the remaining end clamp onto the specimen
taking care to locate the spigot on this end clamp as
far as possible into the open end of the spacer. Turn
the end lamp until the dial gauge plunger contacts
the flat on the end of the rod. The dial gauge should
be in such a position that the dial is clearly visible.
Hold the three components together and ftTDlly
tighten the cap screw in the left-hand end clamp.
The spacer should just be free to rotate without any
end play. The whole assembly firmly fixes to the
test specimen and the tailstock can be slid along the
bed until the free hexagon end of the specimen is
inside the headstock socket. Lock the straining head
in position.
The Torsiometer is now ready for use. Should the full
scale deflection of the dial gauge be insufficient at this
first clamp position of the rod it may be adjusted to
register further straining of the specimen by just
slackening the knurled nut and resetting the position of
the rod. In this way the position of the TorsioI11leter
clamping on the specimen is in no way disturbed, and
continual adjustment throughout the whole loading
range is obtained.
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