Introduction: closely around the circle, so that it can force and stretched, each side around a loop (
循环)
。
the following necessary for a stretch of the
spring data:
1, free length, total length, long full circle, since the length of hook circles;
2, control the diameter, outer diameter, inner diameter, the inside diameter of casing;
3, steel wire size wire diameter;
4, materials (
Species, grade)
；
5, laps: the total number of turns and right-handed or left-handed;
6, the end of the form;
7, within the hook load;
8, load rate, deflection, every inch of pounds;
9, tensile length.
Formula:
spring constant: to k said, when the spring is stretched, each additional load (1 mm distance
kgf /毫米)
spring constant formula (
Unit: KGF/mm)
:k = (
G*d4）
/（
8*Dm3*Nc）
G: module of rigidity of wire;
D: wire diameter;
Dm: - pitch diameter = diameter
Wire diameter;
Nc: laps = total number of laps - effectively
2.
extension spring characteristics test
the spring size including outside diameter, inside diameter, spring wire diameter, free length and tensile length.
In testing is often necessary to test the spring load and stress, this time to consider extension spring free length and the length, is the spring in the no load state and the length of the large tensile condition.
talking about spring, a lot of people are not strange, has been widely applied in life.
Spring tension spring and
compression spring, in this paper, mainly explain is one of the characteristics of extension spring, often used in some hand tools, shock absorbing device, switch equipment tools, such as machine, some control valve can be helpful in various fields, and materials of diversity.
Here, small make up on tensile spring characteristics and how to detect the features, help you to understand the tension spring.
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