German unimatic springs unimatic models unimatic prices

unimatic springs, as elastic elements, are widely used in the suspensions of modern automobiles, including passenger cars, trucks, and off-road vehicles. Compared with leaf springs, torsion bar springs offer a series of advantages: high energy storage per unit mass, which reduces vehicle weight and saves material; since the torsion bar spring is fixed to the frame, it reduces unsprung mass, helping to improve ride smoothness; when applied to the front suspension of front-wheel-drive vehicles, the torsion bar spring can be arranged longitudinally, leaving space for the oscillating half-shafts of the front drive axle. However, the manufacturing cost of torsion bars is relatively high, with strict requirements on materials and processing technology. In addition, torsion bar springs serve only as elastic elements and must be equipped with guiding mechanisms. Torsion bar springs are made of chrome-vanadium alloy spring steel, and their surfaces are very smooth after machining. During use, the surface of the torsion bar must be well protected. Typically, the surface of the torsion bar spring is coated with a layer of epoxy resin, wrapped with a layer of fiberglass cloth, coated with another layer of epoxy resin, and finally coated with asphalt and anti-rust paint to prevent collision, scratching, and corrosion, thereby extending the service life of the torsion bar spring.

unimatic spring applications

Compression spring wire springs are used in all types of applications ranging from home appliances to motorized equipment and motors, as they are the required type of spring. Compressed by loads acting on them or their ends, compression springs are designed with compressed wire that attempts to return the spring to its original shape, thereby pushing back against the load. Main application areas: medical respiratory equipment, medical mobile equipment, hand tools, home care equipment, shock absorption, and engine valve springs.

unimatic spring classification

1) Torsion springs: Torsion springs (torsional springs) utilize the principle of leverage, generating significant mechanical energy through the twisting or rotation of elastic materials with softness and high toughness. They are springs that withstand torsional deformation, and their working parts consist of coils that are either closely wound or separately wound. The end structures of torsion springs are processed into various shapes of torsion arms, ranging from single torsion to double torsion, and even various torsion bar deformations, formed according to design requirements. Torsion springs are commonly used in balancing mechanisms in machinery and are widely applied in industrial production such as automobiles, machine tools, and electrical appliances. 2) Compression springs: Compression springs are helical springs that withstand axial pressure. Springs are generally classified into constant-pitch springs and variable-pitch springs. Shapes of compression springs include cylindrical, conical, convex, concave, and a small number of non-circular forms. There is a certain gap between the coils of compression springs. When subjected to external loads, the spring contracts and deforms, storing deformation energy. Variable-pitch springs are becoming increasingly common, not limited to constant-pitch springs, allowing variable-pitch springs to perform different functions in different environments. 3) Carbon nanotube springs: The diameter of carbon nanotube springs can reach hundreds of micrometers, while their length can reach several centimeters. Their spinning structure has broad application prospects, with potential uses in stretchable conductors, flexible electrodes, micro strain sensors, supercapacitors, integrated circuits, solar cells, field emission sources, and energy dissipation fibers, making it possible to prepare visibly observable carbon nanotube electronic devices. They are also expected to be applied in medical devices, such as tension-sensing bandages. This new structure can also be developed into multifunctional carbon nanotube fiber composite materials for utilization. 4) Extension springs: Extension springs are helical springs that withstand axial tensile forces. Extension springs are generally manufactured using round cross-section materials. When not under load, the coils of extension springs are usually tightly closed with no gap. They work by utilizing the rebound force (tensile force) after stretching, used to control the movement of machine parts, store energy, measure force magnitude, etc., and are widely used in machines and instruments. Hook forms include side-hook extension springs, long-hook extension springs, British-hook extension springs, German-hook extension springs, semi-circular hook extension springs, duck-bill hook extension springs, etc. Materials include stainless steel, music wire, high-carbon steel, phosphor bronze, beryllium copper, and oil-tempered alloy spring steel. 5) Air springs: Air springs are non-metallic springs that achieve elastic action by adding pressurized air into a flexible sealed container, utilizing the compressibility of air. They can be roughly divided into bladder type and diaphragm type. Air springs have excellent elastic characteristics. When used in the suspension systems of high-end vehicles, they can significantly improve vehicle ride smoothness, thereby greatly enhancing driving comfort. Therefore, air springs are widely used in automobiles and railway locomotives. In addition, due to the many advantages of air springs compared to ordinary steel springs, they are also applied in some mechanical equipment and precision instruments.

unimatic spring applications

To a large extent, disc springs are replacing cylindrical helical springs. They are commonly used in heavy machinery (such as presses) and weapons like cannons and aircraft as powerful buffer and vibration-damping springs, as clamping springs for automobile and tractor clutches and safety valves, and as energy storage elements for mobile devices. Disadvantage: Load deviation is difficult to guarantee. Disc springs can be divided into three categories based on cross-sectional shape: standard disc springs (with rectangular cross-section), disc springs with radial grooves, and trapezoidal cross-section disc springs. Standard disc springs are divided into those with support surfaces and those without. Disc springs with radial grooves are based on standard disc springs, with several uniformly distributed slots cut radially. Slots can be cut from the inner hole towards the outer circle or from the outer circle towards the inner hole. Trapezoidal cross-section disc springs can be divided into two types: those with inner edge thickness greater than outer edge thickness, and those with inner edge thickness less than outer edge thickness. Since the deformation and load values of single-piece disc springs often fail to meet usage requirements, they can be used in groups to form disc spring assemblies (columns). Typical combination methods include: stacked combination disc springs, compound combination disc springs, and other combination disc springs. Compared with cylindrical helical springs, disc springs have the following characteristics: 1) The load-deformation characteristic curve exhibits a nonlinear relationship. 2) Disc springs are thin-sheet shaped, easy to form assemblies, allowing modular assembly and replacement, thus facilitating maintenance. 3) Disc springs with radial slots exhibit zero stiffness characteristics. This characteristic can be applied in situations where the spring force is required to remain basically stable within a certain deformation range. 4) The vibration absorption performance of disc springs is no lower than that of cylindrical helical springs. When using stacked combinations, the friction between disc spring sheets provides greater damping, dissipating impact energy.

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