German SIEMENS springs SIEMENS models SIEMENS prices

SIEMENS 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 helps reduce vehicle weight and save materials; since the torsion bar spring is fixed to the frame, it reduces unsprung mass, contributing to improved 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 processes. In addition, torsion bar springs serve only as elastic elements and must be equipped with guiding mechanisms. Torsion bar springs are made of chromium-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, a layer of epoxy resin is applied to the surface of the torsion bar spring, 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.

SIEMENS spring structure

The torsion bar spring itself is a torsion bar made of spring steel. The cross-section of the torsion bar is usually circular, with a few being tubular or rectangular. The shapes of its two ends can be splined, square, hexagonal, or cylindrical with flat surfaces, so that one end is fixed to the frame and the other end is fixed to the suspension arm, which is connected to the wheel.

SIEMENS spring structure classification

According to the nature of the force, springs can be divided into tension springs, compression springs, torsion springs, and bending springs. According to shape, they can be divided into disc springs, ring springs, leaf springs, helical springs, truncated conical volute springs, and torsion bar springs. According to the manufacturing process, they can be divided into cold-coiled springs and hot-coiled springs. Ordinary cylindrical springs are the most widely used due to their simple manufacturing, ability to be made into various forms according to load conditions, and simple structure. Spring manufacturing materials should generally have high elastic limits, fatigue limits, impact toughness, and good heat treatment performance. Commonly used materials include carbon spring steel, alloy spring steel, stainless spring steel, as well as copper alloys, nickel alloys, and rubber. Spring manufacturing methods include cold coiling and hot coiling. Spring wire diameters less than 8 mm are generally cold-coiled, while those greater than 8 mm are hot-coiled. Some springs undergo strong pressure or shot peening treatment after manufacturing to improve their load-bearing capacity.

SIEMENS spring features and applications

Features: Compared with ordinary compression or tension springs, their spring force is very constant, providing an output close to a linear force, ensuring that the product does not change due to variations in spring force during use. In narrow and elongated spaces, they can minimize space usage, enhancing possibilities for aesthetic product design. Constant force spring applications: lift fans, LCD monitors, sliding windows and doors, supermarket automatic checkout counters, motor brush pressing devices, cables, stapler springs, power tools, car ashtrays, locomotive brush accessories, medical instruments, mobile phone holders, etc.

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