German jantsch springs jantsch models jantsch prices

jantsch springs are a new type of elastic component that uses high-pressure nitrogen as the working medium. They feature compact size, high spring force, long stroke, smooth operation, precision manufacturing, long service life (one million cycles), flat force-deflection curve, and no need for pre-loading. They perform tasks that conventional elastic components such as metal springs, rubber, and air cushions struggle to accomplish, simplifying mold design and manufacturing, facilitating mold installation and adjustment, extending mold service life, and ensuring stable product quality. They can also be designed as a nitrogen spring system to operate as part of the mold, allowing easy implementation of constant pressure and delayed action within the system, making them the most ideal next-generation elastic components with flexible performance.

jantsch spring influencing factors

Springback includes angular springback and curvature springback, resulting from the combined effect of springback in the bending deformation zone and the non-deformation zone. Many factors influence springback, mainly: (1) material mechanical properties σs, Eoσs higher, E value smaller, greater bending springback; (2) degree of deformation r/t. Under identical conditions, angular springback increases with increasing r/t value; curvature springback decreases with increasing r/t value; (3) bending center angle α o larger bending center angle α, greater springback angle; (4) die clearance Z. Larger punch-die clearance results in greater springback; (5) bending method. Free bending has large springback, corrected bending has smaller springback, and full-form upsetting bending has the smallest springback; (6) workpiece shape and material microstructure state. Complex shapes with more mutual constraint have smaller springback, while springback is greater after cold work hardening; (7) die structure and blank holder force magnitude. Greater blank holder force results in smaller springback after bending.

jantsch spring features

1) Precise adjustment performance, i.e., highly sensitive relationship between force and displacement; 2) Good flexibility, i.e., relatively wide deformation range; 3) Relatively easy manufacturing; 4) Compact structure; 5) High energy utilization rate. Example characteristics: Conical helical springs offer good cushioning performance and can withstand large loads. Spiral volute springs can store more energy and withstand large loads, but their manufacturing process is more complex. The performance of concave helical springs is similar to that of conical helical springs, commonly used in seat cushions and mattresses. Spring wire cross-sections include circular and rectangular, with circular being the most common. Helical springs, also known as torsion springs, undergo torsional deformation, with their working part tightly wound into a helical shape. The ends of torsion springs are processed into various shaped torque arms rather than hooks. Torsion springs are commonly used in balancing mechanisms in machinery and are widely applied in automotive, machine tool, and electrical industries.

jantsch spring features

Suspensions using torsion bar springs are lighter in weight, simpler in structure, and require no lubrication. By adjusting the installation angle of the fixed end of the torsion bar spring, automatic vehicle height adjustment is easily achieved. Torsion bar springs store greater elastic energy per unit volume and have low mass. Compared to helical springs, torsion bar springs are compact and easier to arrange. Torsion bar springs are widely used in off-road vehicles, light passenger cars, and trucks. Based on cross-sectional shape, torsion bar springs are classified as circular, tubular, or leaf-type. Solid circular torsion bars have a simple structure and are most commonly used. For assembly, both ends are machined with splines, hexagonal, square, or other shapes. Due to the small size of spline ends, spline connections are predominantly used. Generally, the major diameter of the spline is 1.2~1.3 times the working diameter of the torsion bar, and the spline length is approximately 1.4 times the spline major diameter. Provided the compressive stress on the spline teeth remains within permissible limits, spline teeth should not be excessively long. Torsion bar springs generally use involute splines GB3478. In the JSB2705 standard, the recommended standard pressure angle for splines is 45°; modules are 1mm and 0.75mm. To facilitate torsion bar spring assembly, some designs feature unequal diameters for the splines at both ends or incorporate a blind tooth on the spline teeth at both ends.

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