German ses sportwagen springs, ses sportwagen models, ses sportwagen prices

ses sportwagen springs are typically 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 spring forms, dating back to the Middle Ages. Leaf springs consist of long, arc-shaped spring steel strips with a rectangular cross-section. In the most common configuration, the center of the arc provides the axle location, 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, usually with progressively shorter lengths. Leaf springs can be used for positioning, a degree of damping, and spring functions. Although interleaf friction provides damping, it is poorly controlled and leads to static friction in suspension movement. For this reason, some manufacturers have begun using single-leaf springs. Leaf springs can be connected directly to the frame at both ends, or directly at one end (usually the front), with the other end connected via a shackle or short swing arm. Tension creates a tendency for the leaves to elongate under compression, resulting in softer elasticity. Some springs terminate in a recessed end, called a spoon end (rarely used), designed to support rotating components.

ses sportwagen spring principles

When leaf springs are installed in an automotive suspension and subjected to positive vertical loads, each spring leaf deforms under stress, tending to arch upward. This causes the axle and frame to move closer together. When the axle and frame move apart, the positive vertical load and deformation on the leaf spring gradually decrease, sometimes even reversing. The eye of the main leaf is heavily stressed and represents a weak point. To improve the stress distribution on the main leaf eye, the end of the second leaf is often bent into an eye that wraps around the outside of the main leaf eye, known as a wrapped eye. A larger gap is left between the main leaf eye and the second leaf's wrapped eye to allow for relative sliding during elastic deformation. In some suspensions, the ends of the leaf springs are not formed into eyes but use other support connections, such as rubber support pads. Flat, rectangular steel plates are curved and stacked to form chassis springs. One end is mounted to a hanger with a pin, and the other end is connected to the main beam with a shackle, allowing the spring to expand and contract. This design is suitable for medium and large trucks. Automotive leaf springs are critically important. As is well known, leaf springs consist of many steel leaves that are elastic, uniform in width and thickness, but vary in length. Their function is to connect the frame and axle in a suspended arrangement, exposed between the frame and axle, absorbing load impacts from the wheels on the frame, reducing severe vehicle vibration, and maintaining driving stability and adaptability to different road conditions. When leaf springs absorb load impacts, they undergo extension movements, causing intense friction between the steel leaves, i.e., compression and tension phenomena. The two friction surfaces generate motion friction forces in different directions, causing the leaf spring temperature to rise, resulting in surface scoring and fine cracks. As the frequency of load impacts increases, the frictional forces generated by the extension movement also increase. When stress concentration points reach the fatigue limit, single-leaf or entire stack fractures occur. Kinetic motion principle tests have proven that for a steel component undergoing compression-extension motion, increased motion frequency raises the component's temperature and reduces its strength. Cracks appear at stress concentration points, gradually expanding and deepening until failure occurs at the fatigue limit. Leaf springs behave similarly, though they possess higher elasticity and are more durable than general steel components. Apart from other causes, the primary reason for leaf spring fracture is poor lubrication. Drivers and technical management personnel should prioritize timely leaf spring lubrication to reduce friction, distribute stress, prevent surface scoring of the steel leaves, minimize intrusion of dust, dirt, and water to prevent corrosion, and dissipate heat to prevent a decline in elastic strength. Standard lubrication procedures should be performed after the new vehicle break-in period concludes, and during use in summer and winter seasons. For lubrication, first remove the leaf spring, undo the central through-bolt to separate the steel leaves, then evenly apply lithium-based or graphite grease to both sides of the leaves. After reassembly, an oil film forms between the two friction surfaces (completing lubrication for one set of leaf springs takes only as long as replacing a single broken leaf).

ses sportwagen spring selection

A. Selection of spring force: Choose 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 increment of 15%-20% to the calculated punching force, which better reflects actual conditions. First, mold wear leads to changes in clearance. Changes in process parameters such as blunt cutting edges, inconsistencies in mold 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 gas charging, high-pressure gas inevitably experiences throttling losses, causing a slight drop in spring force. Third, gas springs have a long service life; after a period of use, high-pressure nitrogen will experience certain leakage, causing a slight decrease in spring force. B. Selection of gas spring quantity: Based on layout requirements, combined with mold structure and force application points, ensure that no eccentric loading occurs during mold operation, while also facilitating mold adjustment. This ensures sufficient service life for the gas springs during use. C. Selection of gas spring boost ratio: Choose based on the gas spring characteristic curve and stamping process requirements to determine the gas spring model. Determining the boost ratio is particularly important when stable force change, 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 desirable to keep the total height of the gas spring low to avoid instability and overly complex structures during mold installation. Moreover, 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 use a gas spring seat plate system, which can reduce mold 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 molds, they must first decide on the structural form. Comprehensive consideration should be given to the stamping process requirements of the required parts, mold structure, equipment used, working environment, working conditions, mold cost, and adjustment/maintenance factors. A. Independent type: The most widely applied is the independent gas spring. It occupies less mold space, 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 mold. It is the preferred design form for designers today. B. Pipe-connected type: Pipe-connected types are generally applied to large stamping parts and large coverings. They use high-pressure pipes to connect individual gas springs together, and install a control instrument to equalize the spring force of each gas spring in the entire system, thereby integrating the whole system into one equivalent independent gas spring. This achieves greater spring force and balance in spring force transmission, extends mold life, and ensures the quality of stamped parts.

ses sportwagen spring functions and applications

1) Reset function: Springs deform under external force and return to their 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 doors, allowing the door to automatically reset after people enter or exit. This function is also utilized in products such as automatic umbrellas and automatic pencils, offering great convenience. In addition, various buttons and keys cannot do without reset springs. 2) Drive function: Mechanical clocks and wind-up toys are driven by tightening the mainspring. When the mainspring is tightened, it undergoes bending deformation, storing a certain amount of elastic potential energy. Upon release, the elastic potential energy converts into kinetic energy, driving rotation through a transmission device. Toy guns, starting pistols, and military firearms also operate using this property of springs. 3) Buffering function: Springs are installed between the locomotive/automotive frame and wheels, utilizing the elasticity of the springs to mitigate vehicle bumps. 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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