According to the nature of the force, the spring can be divided into extension springs, compression springs, torsion spring and the bending spring, according to the shape can be divided into disc shaped spring, spring ring, a plate spring, helical spring, conical spiral spring and torsion bar spring and so on, according to the production process can be divided for cold rolled coil spring and hot spring roll. Ordinary cylindrical spring due to the manufacturing is simple, and can be made according to the load of various types, the structure is simple, it is the most widely used. Spring manufacturing materials generally should have high elastic limit, fatigue limit, impact toughness and good heat treatment performance, etc., commonly used carbon spring steel, alloy spring steel, stainless steel and copper alloy, nickel alloy and rubber, etc.. Manufacturing method of spring cold roll and hot roll method. Spring wire diameter less than 8 mm cold roll the general law, greater than 8 mm by coil method. Some spring also forced or shot peening after being produced, can improve the bearing capacity of the spring.
According to the China spring manufacturing industry sales demand and investment forecast analysis report [2] statistics, the spring can be divided into the following 7 categories:
1, the coil spring is a torsion spring, is to bear the torsion deformation of the spring, it is the work of the part is also closely around the spiral. The end of the torsion spring is a torsion arm of various shapes, rather than a hook.
2, the tension spring is to bear the axial tension coil spring. When the load is not loaded, the tension spring between the ring and the ring is generally not a gap.
3, a compression spring is under axial pressure of the coil spring, the cross section of the material was round but also useful for rectangular and multi strand steel rayon rolled, spring, generally for pitch, compression spring shape: cylindrical, conical, convex and concave and a small amount of non circular, compression spring ring and the ring will have a certain gap, when subjected to external load when the contraction of the spring deformation, stored deformation energy.
4, torsion spring use leverage principle, through the material of soft, toughness of the large elastic material distortion or rotation, so that it has a great mechanical energy.
5, progressive type spring, this spring the thickness and density of inconsistent design, the advantage is in low compression can through the low elasticity of part absorbs the road of ups and downs, ensure the ride comfort, when the pressure increases to a certain extent after the thick part of the spring to support the body, and the shortcomings of this spring is control feeling not directly, but is less accurate.
6, a linear spring, a linear spring from top to bottom thickness, density constant, elastic coefficient is a fixed value. This design of the spring can make the vehicle to get more stable and linear dynamic response, is conducive to better control of the driver\'s vehicle, and more for the performance of the modified car and competitive vehicles, of course, is the comfort of the impact.
7, the short spring short spring compared to the original factory spring to a shorter, and more
Air spring
Air spring
Stout, installation short spring, can effectively reduce the center of gravity of the body, reduce cornering roll, bends more stable and smooth, improve vehicle corners manipulation. And the original shock absorber damping set comfortable bias, so the short spring and shock absorber factory in coordination is not very stable, it can not be effective inhibition of short spring rebound and compression, driving on the bumpy road, will have an unpleasant feeling are jumping, unchecked, the service life of the shock absorber will greatly shortened, and there is a potential leak. Of course, these conditions are relatively speaking, the daily driving will not be so serious damage, and try not to drive, after all, the original shock absorber can not bear high load * *:*@*************************6