The difference between the special-shaped spring and the conventional spring is that the spring itself is irregular, with bending and a large number of complex angle designs. Suitable for some special occasions.
1. Variable diameter spiral spring: it is used in some special occasions, the material of the variable diameter spring is generally circular cross-section material, and most of them bear compression load.
2. Sheet spring: The material of this spring is spring strip (or plate), which is processed by the corresponding mold in special equipment or general pressure processing machine tool. The material thickness of leaf springs, wave springs, and light springs is relatively thin, while the material thickness of medium or large disc springs is often thicker. Such springs are also widely used.
3. When the installation space is limited, the spring of rectangular cross-section material is often used, because the spring made of rectangular cross-section material can obtain a larger load in the same space and the same deformation. Compared with the spring of circular cross-section material, this kind of spring has a large cross-sectional area in the same space, so the energy it absorbs is also large, as shown in the figure below. It can be used for heavy machinery, stamping dies or springs with particularly high stiffness.
Disc springs are small in size and light in weight, and are widely used in cushioning, shock absorbers and other occasions, and are widely used in stamping dies, valve clutch fasteners, and petroleum and geological engineering machinery.
Convex helical compression spring due to both ends of the smaller coil can be embedded in the middle of the ring, so you can get a larger amount of deformation. For example, some medium-convex car brake springs are always in a tight state. When the car valve is opened, the spring recovers and deforms, driving the brake to brake the car. The hair clipper is also the use of the characteristics of the convex spiral spring, in the effective space to obtain greater deformation and stress.
6. The spiral coil spring is similar to the conical coil spring. It can absorb large energy under pressure. Due to manufacturing difficulties, it is only used in special cases limited by air. Planar spiral coil spring has a large number of coils, a large amount of deformation, can store a large amount of energy, and is mostly used for compression springs and energy storage components in instruments and meters.
7. The leaf spring can be formed by superimposing one-piece spring steel plate or multiple pieces. Its cushioning and damping performance is good, especially the multi-leaf spring has strong damping performance. It is mainly used for the suspension of automobiles, tractors and railway vehicles.
Unequal pitch coil spring is mainly used for motorcycle and small passenger car suspension spring and high-speed engine valve spring, etc. On the same spring, it can not only meet the small stiffness when the deformation is small, but also meet the requirements of large stiffness when the deformation is large. The unequal pitch spring can meet these special requirements. unequal pitch
9. The torsion bar spring is actually a straight bar made of elastic material under the action of torque. It has large deformation energy per unit volume and is mainly used for suspension devices of various vehicles.
The ring spring is formed by the outer ring with the inner cone and the inner ring with the outer cone. The logarithm of the inner and outer rings is determined according to the size of the load and the requirement of deformation. The ring spring has a high shock absorption capacity and is mainly used for heavy equipment and buffer devices.
11. Line spring is a variety of linear springs made of spring wire, generally made of cold drawn spring steel wire. Line springs are mostly used for occasions where the load is small and there are no strict requirements on the load characteristics. The cross section of the line spring is often circular, so its load is not restricted in direction and has the same bending stiffness in all directions.
12. Spring collars are available in round cross-section materials and rectangular cross-section materials. Sometimes, in order to facilitate assembly, the end of the collar is made and then bent. In the manufacture of the circlip, the close-wound spring ring can be self-leveling after cutting, winding must have a large initial stress.
13. The serpentine spring is named after its tortuous shape like a snake, and is also called "Z" and "S" shaped springs according to its shape. It is widely used in car seat cushions, so it is also called seat spring.
14. Multi-strand spiral spring is generally the first 0.5mm ~ 3mm steel wire twisted into a steel cable, and then rolled into a spring, the most commonly used is not the center of the strand of 3~4 strands of steel cable. When there are more than 4 strands of the steel cable, there should be a central strand. In order to make the steel cable not loose after being stressed, the rotation direction of the steel cable should be opposite to the rotation direction of the spring.
15. Clamp springs such as (see Figure 1 below) are often used for fastening automobile liquid storage tanks, etc., and belong to the category of double torsion springs. This kind of spring can be rolled by CNC spring coiling machine in conditional enterprises. Generally, enterprises are rolled by hand, and some special accessories can be made during rolling. First cut and straighten the plate material, then make it into a "U" shape, and roll it into a curved shape on the special auxiliary tool. The auxiliary tool can be used in conjunction with the spring coiling machine for sector gear feeding. The auxiliary tool "B" can be installed at the position of the feeding guide wheel by using the reciprocating mechanism of the spring coiling machine feeding, thus realizing the semi-automatic production of the bent shape of the clamp spring, which is about 10 times higher than manual operation.