German lesjoefors springs lesjoefors models lesjoefors prices

lesjoefors springs are mechanical energy storage structures, primarily used in ancient ballistae and other crossbow-type weapons. Torsion springs store energy by twisting or rotating elastic materials that are soft and highly tough, thereby imparting a certain amount of mechanical energy to the projectile. Modern torsion spring torque bars are mostly made of steel with good elasticity, and their forms have varied greatly; examples include the hairsprings in mechanical watches, the power springs in toy gyro guns, and the torque bars in tanks and automobiles. Torque bars are compact yet deliver high torque, making them ideal as shock absorption components for transportation vehicles. Torsion spring torque bars are mostly made of steel with good elasticity, and their forms have varied greatly; examples include the hairsprings in mechanical watches, the power springs in toy gyro guns, and the torque bars in tanks and automobiles.

lesjoefors spring classification

1) Based on different load characteristics during operation, helical springs can be divided into compression, extension, and torsion types; 2) Based on structural features, they can be divided into two main categories: cylindrical helical springs and variable-diameter helical springs; variable-diameter helical springs mainly bear compression loads; 3) Based on shape features, they can be divided into conical, volute, concave, and convex types. 4) In terms of production and use, helical springs can also be divided into large helical springs and small helical springs based on forming methods and material diameter; the former are typically hot-formed, while the latter are cold-formed. 5) Other classifications: There are many types of helical springs. By external shape, they can be divided into: ordinary cylindrical helical springs; variable-diameter helical springs. By helix direction, they can be divided into: left-hand springs; right-hand springs. Variable-diameter helical springs are divided into: conical helical springs, volute helical springs, and concave helical springs. Cylindrical helical springs have a simple structure, are easy to manufacture, and are widely used. Their characteristic curve is linear, allowing them to function as compression, extension, and torsion springs. When the load is high and radial dimensions are limited, two compression springs with different diameters can be nested together to form a combination spring.

lesjoefors 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, to better match actual conditions, the spring force of the gas spring should be selected by adding an increase of 15%-20% to the calculated punching force. First, after mold wear, gaps change. Changes in process parameters such as blunt cutting edges, inconsistencies in mold thickness and sheet metal deformation resistance, cause changes in workpiece deformation resistance, so allowance should be made in the design. Second, during charging, high-pressure gas inevitably suffers throttling losses, causing the spring force to float downward. Third, gas springs have a long service life; after a period of use, high-pressure nitrogen will have certain leakage, causing a slight drop in spring force. B. Selection of gas spring quantity: Based on layout requirements, combined with mold structure and the position of 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. C. Selection of gas spring boost ratio: Choose based on the gas spring's 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 preferred that the total height of the gas spring not be too high, to avoid instability and overly complex installation structures in the mold. 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 by the process, it is recommended to adopt a gas spring manifold 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 first need to decide on the structural form, comprehensively considering stamping process requirements, 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, which 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 directly placing them 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, thus integrating the whole system into one equivalent independent gas spring. This achieves greater spring force and balance in force transmission, extends mold life, and ensures the quality of stamped parts.

lesjoefors spring applications

Disc springs are replacing cylindrical helical springs in a wide range of applications. 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 mechanisms. Disadvantage: Load deviation is difficult to guarantee. Disc springs can be divided into three categories based on cross-sectional shape: ordinary disc springs (rectangular cross-section), disc springs with radial grooves, and trapezoidal cross-section disc springs. Ordinary disc springs are divided into those with support surfaces and those without; disc springs with radial grooves are based on ordinary disc springs, with several uniformly distributed slots cut radially, either from the inner hole outward or from the outer circle inward; trapezoidal cross-section disc springs are divided into 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 a single disc spring often cannot meet usage requirements, they can be used in groups to form disc spring assemblies (columns). Typical combinations 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 is non-linear. 2) Disc springs are thin and easy to form into assemblies, allowing for modular assembly and replacement, which facilitates 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, friction between disc spring plates provides significant damping, dissipating impact energy.

Weidou Intelligent Technology professionally sells German lesjoefors compression springs, lesjoefors extension springs, lesjoefors helical springs, lesjoefors wave springs, lesjoefors constant force springs, lesjoefors torsion springs, lesjoefors bending springs, lesjoefors disc springs, lesjoefors ring springs, lesjoefors leaf springs, lesjoefors torque bar springs, lesjoefors tension springs, lesjoefors retaining rings, lesjoefors tension springs, lesjoefors die springs, lesjoefors original imports from Germany. Welcome customers to inquire and order.