German brand kg federnwerk springs brand kg federnwerk models brand kg federnwerk prices

brand kg federnwerk springs are commonly used in wheeled vehicle suspensions. Initially known as laminated or bracket springs, and sometimes as semi-elliptical or cart springs, they are one of the oldest forms of springs, dating back to the Middle Ages. Leaf springs consist of long, arc-shaped spring steel with a rectangular cross-section. In the most common configuration, the center of the arc provides the axle position, while loops formed at either end attach to the vehicle chassis. For very heavy vehicles, leaf springs can be made from multiple leaves stacked together, typically with progressively shorter leaves. Leaf springs can provide positioning, a degree of damping, and spring functionality. Although interleaf friction provides damping, it is poorly controlled and results in static friction during suspension movement. For this reason, some manufacturers have begun using mono-leaf springs. Leaf springs can be connected directly to the frame at both ends, or directly at one end (usually the front) and via a shackle or short swing arm at the other. The tension strap counteracts the tendency of the leaves to elongate under compression, thereby softening the spring rate. Some springs terminate in a recessed end, known as a spoon end (rarely used), designed to support rotating components.

brand kg federnwerk spring structure

A torsion bar spring is itself a torsion bar made of spring steel. The cross-section of the torsion bar is typically circular, though tubular and rectangular sections are also used. The ends can be shaped as splines, squares, hexagons, or cylinders with flat surfaces, allowing one end to be fixed to the chassis and the other to the suspension control arm, which is connected to the wheel.

brand kg federnwerk spring selection

A. Selection of spring force: Determine the quantity, model, and spring force of each gas spring based on the calculated punching force. Generally, the spring force of the gas spring should be selected by adding an increase of 15% to 20% to the calculated punching force, which better reflects actual conditions. First, gap changes occur after die wear. Changes in process parameters such as blunt cutting edges, inconsistencies in die thickness and sheet metal deformation resistance, cause changes in workpiece deformation resistance; therefore, allowance should be made for deformation resistance in the design. Second, during charging of the gas spring, high-pressure gas inevitably experiences throttling losses, causing a slight decrease in spring force. Third, gas springs have a long service life; after a period of use, there will be certain leakage of high-pressure nitrogen, resulting in a slight drop in spring force. B. Selection of the number of gas springs: Based on layout requirements, combined with the die structure and the position of force application points, ensure that no eccentric loading occurs during die operation, while also facilitating die adjustment. This ensures sufficient service life for the gas springs. C. Selection of the boost ratio for gas springs: Select based on the characteristic curve of the gas spring and stamping process requirements to determine the gas spring model. Determining the boost ratio is particularly important when stable force variation, basically constant working force, or high initial force is required. D. Selection of gas spring stroke: Regardless of the process, when selecting gas springs, it is preferable that the total height of the gas spring is not too high, to avoid instability and overly complex structures during installation in the die. Additionally, the larger the stroke, the higher the price of the gas spring, which is especially important for independent gas springs. If a large stroke is indeed required due to process needs, it is recommended to adopt a gas spring seat plate system, which can reduce die height and improve the stability and reliability of the gas springs. Sometimes, for safety and to avoid accidents, a safety stroke of 3-5mm should be added when selecting gas springs. Selection of gas spring structural form: When designers use gas springs in dies, they must first decide on the structural form. This requires comprehensive consideration of stamping process requirements, die structure, equipment used, working environment, operating conditions, die cost, and adjustment/maintenance factors. A. Independent type: The most widely used is the independent gas spring, which occupies less space in the die, is securely mounted, and comes in various structural forms. Several different installation forms require no accessories and can be used by placing them directly in the die. This is the preferred design form for designers today. B. Pipe-connected type: Pipe-connected types are generally applied to large stamping parts and large cover panels. They use high-pressure pipes to connect individual gas springs together, along with a control instrument, ensuring equal spring force across all gas springs in the system. This integrates the entire system, equivalent to a single independent gas spring, achieving greater spring force and balanced force transmission, extending die life, and ensuring the quality of stamped parts.

brand kg federnwerk spring functions and applications

1) Reset function: The spring deforms under external force and returns to its original state when the force is removed. Many tools and devices utilize this property of springs for resetting. For example, reset springs are installed on the hinges of many building entrance doors, allowing the door to automatically return to its closed position after people pass through. This function is also used in products such as automatic umbrellas and mechanical pencils, offering great convenience. In addition, reset springs are essential components in various buttons and keys. 2) Drive function: Mechanical clocks and wind-up toys are driven by tightening the mainspring. When the mainspring is tightened, it undergoes bending deformation and stores a certain amount of elastic potential energy. Upon release, the elastic potential energy is converted into kinetic energy, driving rotation through the transmission mechanism. Toy guns, starting pistols, and military firearms also operate based on this property of springs. 3) Buffering function: Springs are installed between the frame and wheels of locomotives and automobiles, utilizing the elasticity of the springs to dampen vehicle vibration and shock. 4) Vibration and sound generation function: When air flows through the reed holes in harmonicas and accordions, it strikes the reeds, causing them to vibrate and produce sound.

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