Forever strong diameter are the standard interpretation of the
spring line, spring line diameter d manufacturing spring steel wire diameter.
1, spring wire diameter d: manufacture of spring steel wire diameter.
2, spring diameter D, the largest outer diameter of the spring.
3, spring diameter D1: the minimum outer diameter of the spring.
4, in the spring diameter D2: the average diameter of the spring.
Their calculation formula is: D2 = (
D + D1)
÷2 = D1 + d = d d。
5, t: in addition to the support ring, spring adjacent two laps corresponding points on the pitch diameter of the axial distance become pitch, represented by t.
6, effective number of turns n: spring can keep the same number of the pitch circle.
7, support ring number n2: in order to make the spring force uniform at work, guarantee the axis vertical face, manufacturing, often will springs at both ends and tight.
And tight turns only support role, referred to as the support ring.
Generally speaking, there are 1.
5 t、2 t 2。
5 t, commonly used is 2 t.
8, the total number of ring n1: effective number of turns and with the support ring.
The n1 = n + n2.
9, high free H0: spring under the external force is not high.
Calculated by the next type: H0 = nt + (
n2-
0.
5)
d = nt + 1。
5 d (
(n = 2)
。
10, spring spread length L: the length of the wire winding spring when need.
L≈n1 (
ЛD2)
2 + n2 (
Compression spring)
L = Л D2 n + hook spread length (
Tension spring)
。
11, spiral direction: has the branch of spin around, common right, drawing didn't indicate the general with the right hand.
12, spring to rotate ratio: the ratio of the diameter D and wire diameter D.
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