CAT NO: DIDACTICNLE-Export-053015
Torsion Of A Spiral Spring- Engineering Lab Training Systems.
Features
Low cost, effective teaching
Self-contained
Wall-mounted
Measurement of torsional stiffness
Demonstration of Hooke's law for
torsional spring
Comparison with theoretical predictions
Three year warranty
Range of Experiments
To compare the experimental stiffness of a plane spiral spring with theoretical predictions.
To observe if the spring exhibits a linear elastic behavior.
Description
Spiral
springs are used to provide a resisting or restoring torque to a shaft
when it is rotated through an angular displacement. They exhibit similar
stiffness characteristics to linear springs, except that the effect is
one of torque rather than force. The stiffness of a spiral spring
depends on its physical dimensions and the rigidity of the steel strip
from which it is formed. The student can easily calculate the
theoretical stiffness of the spring, and compare the value with simple
experimental results.
The wall mounted unit consists of a spiral
spring coiled from a length of 25 x 0.6mm steel strip to give an
effective length of 2 metres, attached to a shaft mounted in ball
bearings. A cord carrying a weight hanger is wound round the shaft, and a
load applied to twist the spring. Spring deflection is measured with an
attached 360° scale. A cord and weight hanger are supplied.
This
equipment is part of a range designed to both demonstrate and
experimentally confirm basic engineering principles. Great care has been
given to each item so as to provide wide experimental scope without
unduly complicating or compromising the design. Each piece of apparatus
is self-contained and compact. Setting up time is minimal, and all
measurements are made with the simplest possible instrumentation, so
that the student involvement is purely with the engineering principles
being taught. A complete instruction manual is provided describing the
apparatus, its application, experimental procedure and typical test
results.