Application:
tension
springs and spiral extension spring, generally for pitch, such as cross section is round more, they can be used in many occasions, such as production assembly, experiment, research and development, maintenance, etc.
Tension spring occupies an important position in the global market, widely used in national defense, Marine, computer, electronic, automotive, mold, medical, biological, chemical, aerospace, railway, nuclear power, wind power, thermal power, engineering machinery, mining machinery, construction machinery, elevator, etc.
extension spring feature
the spring is under axial tension spring, stretching after pulling force is used to store energy, it will try to back together after open, produce to the force majeure.
When not bearing, is between tension spring coil and tight, so tensile spring coiling of the close degree is decided by the initial tension.
Its general with stainless steel, piano steel, high carbon steel, phosphor copper, oil tempered alloy spring steel, etc.
tensile spring nettley, generally speaking, there are threads of embedded, cross center TAB, retractor, more holes, shrink pores, rectangular convergent and teardrop-shaped convergent, convergent from spring body's length can be according to the specific circumstances.
More common is pegged to the extension spring, the 'hook' is a source of tension, its shape is circular cross section, easy fixed to the connected components.
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.
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