What are the size standards for hardware springs? Is described according to the diameter, length, number of turns before using it, you can first look, sprout Xiaobian for everyone to summarize.

1. The diameter of steel wire for hardware spring and the diameter of spring wire D.

2. The maximum outside diameter of the hardware spring and the outer diameter of the spring.

3, hardware spring minimum outer diameter, spring inner diameter d1.

4, the average diameter of the metal spring, its formula is: D2 = (DD1) 83019 2 = D1d = Dd

5, in addition to supporting the circle, the metal spring adjacent to the two circle corresponding point in the middle diameter of the axial distance becomes pitch, this is to use t to indicate.

6. Effective coil number n: the number of turns that the spring can hold the same pitch.

7, the number of support rings N2: in order to make the spring in the work force even, ensure the vertical axis of the end surface, and manufacturing, usually the two ends of the spring and tight. The number of tight rings acts only as a support, and is called a support ring. Generally have 1.5T, 2T, 1.5T, commonly used is 2T.

8, the total number of laps, n1:, the number of effective cycles and the sum of the support rings. That is, n1=n+n2.

9, free high H0: spring in the absence of external force of the height. Calculated from the following: H0=nt+ (n2-0.5) d=nt+1.5d (n2=2).

10. The length of the hardware spring: the length of the wire required for coiling the spring. L = N1 (C. D2) 2+n2 (L= D2 n+ spring) successfully developed length of hook (spring)

11, spiral direction: there are left and right spin of the distinction, the right hand is often used, the drawings are not marked, usually with the right left.