How to use the spring correctly?
1. the use of compression spring must have a guide
The so-called guide is a guide shaft or guide counterbore that has a guiding effect on the spring. If there is no guide shaft or hole, the spring is prone to longitudinal and lateral bending, and the inner side of the bend will generate high stress, which will cause the spring to break. The length of the guide is not arbitrary. It is generally recommended that the length of the guide be greater than 1/2 the initial set length of the spring, and the end of the guide should be chamfered around C3. The recommended value of the gap between the spring and the guide: the diameter of the guide shaft is 1mm smaller than the inner diameter of the spring; the outer diameter of the spring is 1.5mm smaller than the inner diameter of the counterbore. If necessary, add lubrication.
2. the use of compression spring must have a guide
The so-called guide is a guide shaft or guide counterbore that has a guiding effect on the spring. If there is no guide shaft or hole, the spring is prone to longitudinal and lateral bending, and the inner side of the bend will generate high stress, which will cause the spring to break. The length of the guide is not arbitrary. It is generally recommended that the length of the guide be greater than 1/2 the initial set length of the spring, and the end of the guide should be chamfered around C3. The recommended value of the gap between the spring and the guide: the diameter of the guide shaft is 1mm smaller than the inner diameter of the spring; the outer diameter of the spring is 1.5mm smaller than the inner diameter of the counterbore. If necessary, add lubrication.
3. the use of combined coil spring
When the small and large springs are used in combination, it is possible that the small spring and the large spring will be entangled together, so the better prevention method is to reverse the rotation of the large and small springs.
4. must be pre-pressed to use
If the spring is used without preload, it is easy to generate impact due to the up and down movement, which may damage or deform the spring. Therefore, it is generally used when preloading is required, and the amount of preloading depends on the free length of the spring.
5. Prevent foreign objects from entering
The spring should be designed to prevent foreign matter from entering the spring because once the foreign matter enters the gap of the spring ring, it is likely to damage the spring.
6. can not be used in series
Because the load capacity of each spring is different, once connected in series, the spring with weak load capacity will suffer and it is easy to die.
7. the parallelism of the installation surface can not be different
The result of the too big difference in parallelism between the two planes where the compression spring is installed is that the spring is prone to bend and then prematurely collapse.
8. The amount of compression cannot exceed the standard
The spring must be used within its rated compression. Overload use will reduce its life or even break.
9. pay attention to the use of temperature
The use of springs at room temperature is of course needless to say, but in the case of high-temperature resistance, the high-temperature resistance of the spring must be considered. The heat resistance of the spring is related to the material and wire diameter. Generally, high-temperature resistant springs should be considered when the temperature exceeds 300 degrees Celsius.
