German gohard federn springs, gohard federn models, gohard federn prices

gohard federn springs are energy accumulators; they store energy but cannot release it slowly. To achieve slow release, a "spring + high transmission ratio mechanism" is required, commonly seen in mechanical watches. Helical springs have been applied for a very long time; ancient bows and crossbows are two types of helical springs in a broad sense. According to appearance, they can be divided into ordinary cylindrical helical springs and variable-diameter helical springs (see figure); according to the direction of the helix, they can be divided into left-hand springs and right-hand springs. Cylindrical helical springs have a simple structure, are easy to manufacture, and are the most widely used. Their characteristic curve is linear, and they can serve as compression springs, extension springs, and torsion springs. When the load is large and radial dimensions are limited, two compression springs with different diameters can be nested together to form a combination spring. Variable-diameter helical springs include conical helical springs, volute helical springs, and concave helical springs. Conical helical springs offer good buffering performance and can withstand larger loads. Volute helical springs can store more energy and withstand larger loads, but the manufacturing process is more complex. The performance of concave helical springs is similar to that of conical helical springs, and they are mostly used in seat cushions and mattresses. Spring wire cross-sections include circular and rectangular shapes, with circular cross-sections being the most common.

gohard federn spring features

1) High stiffness, strong buffering and vibration absorption capability, capable of withstanding large loads with small deformation, suitable for applications with limited axial space. 2) Features variable stiffness characteristics; this type of spring has a wide range of nonlinear characteristics. 3) By using the same disc springs in different combination methods, the spring characteristics can vary within a wide range. Combination methods such as face-to-face nesting and stack nesting can be adopted, as well as combinations with different thicknesses and numbers of discs. 4) When stacked, for the same deformation, the greater the number of springs, the greater the load. 5) Short stroke, heavy load, small space requirement, convenient for combined use, easy maintenance and replacement, economical, high safety, and long service life.

gohard federn spring selection

A. Selection of spring force: Select 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 matches actual conditions. First, after mold wear, gap changes occur. Changes in process parameters such as blunt cutting edges, inconsistencies in mold thickness and sheet metal deformation resistance, will cause changes in workpiece deformation resistance, so allowance should be made in the design of deformation resistance. 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, causing a slight drop in spring force. B. Selection of the number of gas springs: Based on forming requirements, combined with mold structure and the position of force application points, ensure that no eccentric loading occurs during mold operation, while also making mold adjustment convenient. This ensures sufficient service life for the gas springs during use. C. Selection of the boost ratio for gas springs: Can be selected 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 change in working force, basically constant working force, or large 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 structures during installation 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 due to process needs, it is recommended to adopt a gas spring base plate system, which can reduce mold height and improve the stability and reliability of the gas springs. Sometimes, for safety and to avoid accidents, when selecting gas springs, a safety stroke of 3-5mm needs to be added. Selection of gas spring structural forms: When designers use gas springs in molds, they first need to decide on the structural form. Comprehensive consideration should be given to the stamping process requirements of the required parts, the structural form of the mold, 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 placed, and comes in various structural forms. Several different installation forms do not require any accessories and can be used by placing them directly in the mold. It is the preferred design form for designers today. B. Pipeline connection type: Pipeline connection 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 to an independent gas spring. This achieves a larger spring force and balance in spring force transmission, extends mold life, and ensures the quality of stamped parts.

gohard federn spring classification

1) Ordinary disc springs, trapezoidal cross-section disc springs, conical trapezoidal cross-section. Disc springs: Simple shape and structure, widely applied. They can be used individually, in face-to-face nesting, stack nesting combinations, or composite disc spring groups, bearing static or variable loads, used as powerful buffering and damping springs in heavy machinery, aircraft, artillery, and other weapons. 2) Diaphragm springs: Mainly used in automotive clutches, functioning through separation fingers and disc spring components. 3) Wave washers: Extensively used in mechanical seals, further developable into spiral wave springs. 4) Slotted disc springs: Typically used in clutches, such as those in lathes, automobiles, and tractors. 5) Circular plate disc springs: Cross-section is circular plate-shaped, deforming into a truncated cone shape under load. Simple structure, high stiffness, used for special requirement occasions. 6) Spiral disc springs: Possess dual characteristics of disc springs and helical springs, allowing for different stiffness requirements. 7) Wave cylindrical springs (wave springs): Formed by overlapping wave washers into a cylindrical shape, allowing for larger deformation.

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