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SPIRAL TORSION SPRINGS
These are generally made of rectangular
section material, flat strip, with round edges or normal
slit edges with equal or increasing space between coils.
These are wound flat to achieve torque. For first 3600,
torque delivered per revolution is linear. Therefore, these
are generally used for less than 3600 rotational applications.
If the these springs are totated more than one turn the
coils will touch each other causing friction leading to
erratic loads.
They generally have a lug across the
I.D. of the spring, which engages a slot in the shaft, over
which it works. The I.D. can be made with holes to engage
an arbor protrusion or can be made in a special shape to
fit over a similar shaped shaft. The outside end can be
formed as per customer's requirement.
Application of Sprial Springs : These
are general used as brush springs in D.C. mortors, anti-backslash
springs, Alternators, Drill presses, Vertical mill, Counter
balance springs etc.
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