What is the number of supporting turns of the slant coil spring? TU's  Cheng Fa precision spring to the friends below talk about it!

The effective number of turns of a spring is the number of turns that are deformed. Reducing the number of effective turns will improve the stiffness of the spring, reduce the effective deformation of the spring, and make the spring appear hard and brittle. For critical springs, it is not recommended to use effective rings to support the ring, as the number of turns involved in deformation decreases and the stress curve of the spring changes, often making the spring hard and easily broken.

The number of Spring support rings is an ideal range (1.5-2.5 times) of important spring 2.5, the main purpose of the support ring is mainly radial load balance spring, so that the spring, spring tray (or spring support body) load uniform, and the spring itself of the buffer effect, the number of turns, the better the buffer performance

In order to make the spring in the work of uniform force, stable support, two end faces and vertical axis, often the two ends of the spring ring tight and ground flat, so that its stable support, known as the support ring. Support rings can be divided into 1.5, 2 and 2.5 according to needs. The usual spring support ring is 2.5, and the rest of the ring holds equal knots.

If in operation, no great impact vibration is found, the stiffness of the spring can also be, it is suggested that there is no need to change, recalculate the type of spring design scheme can be. When spring manufacturers manufacture springs, they must conduct heat treatment to ensure that the metallographic content of raw materials exceeds the specifications, rather than in a cold state to make the next change, so that the possibility of spring fracture will be aggravated.

Function of spring

1. Buffer function

There are springs between the frame and the wheels, and the elasticity of the springs is used to slow the bump of the vehicle. Therefore, the springs on each car are also of great use.

2. Vibration and sound functions

When air is blown out of the harmonica, the accordion hits the reed through the reed holes, and the reed vibrates to produce a wonderful sound.

3. Function of measurement

How to make spring rolls? In the elastic limit, the extension (or contraction) of the spring is proportional to the external force. Use this property to do a spring balance.

4. Reset function

The spring deforms under external force. After removing the external force, the spring can return to its normal state. You can reset many devices and tools using this property. For example, many buildings on hinges are equipped with return springs that automatically ease the door as people enter and exit. People also use this function to make automatic pencils, automatic umbrellas and other items, which is very convenient.