What Are the Different Types of Mechanical Springs?

A spring is a mechanical part that works with elasticity. The parts made of elastic material deform under the action of external force, and then return to the original state after removing the external force. Also known as "spring". Generally made of spring steel. The types of springs are complex and diverse. According to shape, there are mainly coil springs, scroll springs, leaf springs, and special-shaped springs.

F = kx, F is the elastic force, k is the stiffness coefficient (or strength coefficient), and x is the length that the spring is stretched (or compressed). Example 1: A 5N spring with a stiffness coefficient of 100N / m is stretched by 5cm. Example 2: When a spring receives a 10N tension, the total length is 7cm, and when a spring is 20N, the total length 9cm, what is the force when the original length and 3cm extension are found? ^[1]

According to the nature of the force, the spring can be divided into

Due to product structure restrictions, multi-strand springs generally have high strength and good performance. The material is required to guarantee the final performance in terms of spring strength and toughness. During the processing of multi-strand springs, it should be noted that: 1. The support ring can be used in two ways, cold and hot, according to product requirements. The heat parallel method is not allowed to heat the spring to sparks or blush, and the temperature of the silicon-manganese steel must not be higher than 850 ° C. The support ring and the effective ring shall be in effective contact, and the gap shall not exceed 10% of the nominal gap between the rings. 2. The characteristics of the multi-strand spring can be determined by the adjustment lead, and the cable distance can be adjusted when necessary. The pitch can be 3 to 14 times the wire diameter, but 8 to 13 times is generally better. Its spring force is also closely related to free height, parallel end ring, outer diameter, and wire performance. It can be changed by adjusting one or more of them. 3. Springs without support rings and springs with excessively small wire diameters should not be welded with spring heads, but the end wire should not be significantly loose and should be deburred. For multi-stranded springs to be welded at the head, the length of the welded part should be less than 3 times the cable diameter (maximum 10 mm). The heating length should be less than one turn. After welding, it should be polished and smoothed. During gas welding, the welded part should be subjected to local low temperature annealing. 4. Generally, the surface treatment of the spring can be performed by phosphating, and other treatments can also be performed. When the plating layer is zinc and cadmium, hydrogen removal treatment should be performed after electroplating, and 3% (not less than 3 pieces) should be pumped after the hydrogen removal. The spring should remove surface dirt, salt marks, and oxide scale. The method can be sandblasting or gasoline cleaning, but not acid cleaning. 5. The compression time of important springs is 24 hours, and that of ordinary springs is 6 hours or continuous compression 3 to 5 times, each time holding 3 to 5 seconds. The gap between the spring and the mandrel during compression is preferably 10% of the mandrel diameter. If the gap is too small, it is difficult to operate. If the gap is too large, the spring is liable to bend and deform. If one of the springs breaks during compression, the rest should be reprocessed. ^[1]