Tension at the beginning of the
spring tension: initial tension equal to that required to pull against each other in the spring and circle, tension in the early spring coiling occurs after forming.
Torsion spring, because of wire material, wire diameter, spring index, electrostatic, lubricating oil, heat treatment, electroplating, make each tensile spring initial produce uneven phenomenon.
The torsion spring, so the installation specification shall be of pretension to slightly apart some distance between each and circle.
At this time the force needed to become the initial tension.
initial tension = P -
K X l = large load
Spring constant tensile length X
:
a number of different terminal device or a 'hook' is used to ensure tensile spring source of tension.
Contrary to the principle of compression spring tension spring.
Compression spring reverse effect at the time of compression and tension spring, a reverse effect at the time of stretching or open.
When tensile spring open on both ends, spring will be trying to bring them back to together.
as compression spring, tension spring is also absorb and store energy.
But I don't like the compression spring most of the tensile spring usually under a certain degree of tension, even in the absence of any load.
This determines the initial tension in the absence of any load, tensile spring coiling of the close degree.
tensile spring design parameters:
indicate the material diameter (
d)
, outer diameter (
D)
The presidents (
Ho)
The work world (
n)
, the location and shape of earring, load (
我p p 1 p 2……)
And the corresponding value (
H1H2……Hj）
If there is early tension, as shown in figure, is on the Po.
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