Introduction to the structure of the metal spring

First, cylindrical coil spring structure.

There are three types of cylindrical coil springs depending on the force nature:

1. Cylindrical coil compression spring.

1) The spacing of the springs.

The pitch for the spring is p; the diameter of the spring wire is d; and there should be an appropriate spacing between the rings in a free state. In order to allow the spring to maintain a certain elasticity after compression, it should also be ensured that under the action of the maximum load, there is still a certain spacing between the rings. The size of the 1 is generally recommended as: 1 s 1 s 0.1d s 0.2mm.

2) Dead Circle.

The two end faces of the spring are tight with the adjacent ring (no gap), only act inglising, do not participate in deformation, so it is called the dead ring. When the number of working rings of the spring n,9, the dead circle at each end of the spring is about 0.75 laps, and at n.7, the dead circle at each end is about 1 to 1.75 laps.

3) End structure form.

Type I: both end face rings are close to the adjacent ring, and in the special grinding bed flat;

Type II: when heating winding the spring wire at both ends of forging flat and tight with the adjacent ring (end collar can be grinding flat, can also not grind flat);

Type III: Both end faces are adjacent to each other and are not smooth.

In important occasions, the YI type should be used to ensure that the two bearing end faces are perpendicular to the axis of the spring, so that the spring is not skewed when pressed. When the diameter of the spring wire d is 0.5mm, the two bearing end faces of the spring do not have to be leveled. A spring of 0.5mm, and two bearing end faces need to be leveled. The leveled part shall not be less than 3/4 of the circumference.