Classification and functions of coil springs

The coil spring is just an accumulator. It has the function of storing energy, but it cannot release the energy slowly. To complete the function of releasing slowly, it should be completed by “spring + large transmission ratio organization”, which is common in mechanical watches. Coil springs have been used a long time ago. Ancient bows and crossbows are two types of coil springs in a broad sense.

First, the presentation of the coil spring

Soon, a spring made specifically for wall clocks based on this principle was also invented by Hook himself. The spring that conforms to the “Hooker Law” is the spring in the true sense. The disc spring was invented by the French Belleville. It is a washer spring with a truncated cone section made of sheet metal or forged blanks. After the emergence of modern industry, in addition to disc springs, new springs such as gas springs, rubber springs, scroll springs, die springs, stainless steel springs, air springs, and memory alloy springs have also appeared. Alloy spring

Second, the classification of coil springs

1. According to the different characteristics of the load during work, the spiral spring can be divided into three types: contraction, extension and change;

2. According to the structural characteristics, it can be divided into two categories: cylindrical spiral springs and variable diameter spiral springs; variable diameter spiral springs are mainly subjected to contraction load;

3. According to its shape characteristics, it can be divided into cone, scroll, concave and convex.

4. In terms of production and application, coil springs can also be divided into two types according to the forming method and material diameter: large coil springs and small coil springs; the former is usually hot-formed, and the latter is cold-formed.

5. In other categories, there are many types of spiral springs, which can be divided into: ordinary cylindrical spiral springs; variable diameter spiral springs.

According to the direction of the spiral line, it can be divided into: left-handed spring; right-handed spring. Variable diameter spiral springs are divided into: conical spiral springs, scroll spiral springs, and concave spiral springs. Cylindrical spiral springs have simple structure, convenient manufacturing, and the most widely used. Its characteristic line is a straight line, which can be used as compression spring, extension spring and change spring. When the load is large and the radial dimension is restricted, two compression springs with different diameters can be used together to form a combination. Copper wire spring

compressed spring

Three, the function of the coil spring

1. Control the movement of machinery, such as valve springs in internal combustion engines, control springs in clutches, etc.

2. Absorb vibration and impact energy, such as buffer springs under cars and train carriages, vibration-absorbing springs in couplings, etc.

3. Store and output energy as power, such as wall clock springs, springs in firearms, etc.

4. Used as a force measuring element, such as a force measuring device, a spring in a spring scale, etc. The ratio of spring load to deformation is called spring stiffness. The greater the stiffness, the harder the spring. Gold-plated spring

Spring is a kind of elastic element widely used in the mechanical and electronic industries. The spring can produce large elastic deformation when loaded, and convert mechanical work or kinetic energy into deformation energy. After unloading, the deformation of the spring disappears and returns to its original shape. Deformation energy is converted into mechanical work or kinetic energy.