German haas springs haas models haas prices

haas 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 spring forms, 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 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, typically with progressively shorter leaves. Leaf springs can be used for positioning, a degree of damping, and spring function. 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), with the other end connected via a shackle or short swing arm. The tensioning strap counteracts the tendency of the leaves to elongate under compression, thereby making the spring rate softer. Some springs terminate in a recessed end, called a spoon end (rarely used), designed to support rotating components.

haas Spring Classification

1) Based on the characteristics of the load during operation, helical springs can be divided into three types: compression, extension, and torsion; 2) According to structural features, they can be divided into two main categories: cylindrical helical springs and variable-diameter helical springs; variable-diameter helical springs mainly withstand compressive loads; 3) Based on shape characteristics, they can be classified as conical, volute, concave, and convex. 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 wire 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: standard cylindrical helical springs and variable-diameter helical springs. By helix direction, they can be divided into: left-hand springs and right-hand springs. Variable-diameter helical springs include: conical helical springs, volute helical springs, and concave helical springs. Cylindrical helical springs have a simple structure, are easy to manufacture, and are the most widely used. Their characteristic curve is linear, allowing them to serve 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 composite spring.

haas Spring Composition

Ring springs are a type of compression spring composed of several inner and outer rings with tapered surfaces. Under axial load P, significant normal pressure is generated between the contact surfaces of the inner and outer rings, causing the inner ring diameter to decrease and the outer ring diameter to increase. Due to these changes in diameter, the spring shortens in length; when the external force is removed, since the taper angle b of the rings is greater than the friction angle, the spring returns to its original dimensions under elastic internal forces. When ring springs bear axial P, significant friction is generated between the tapered contact surfaces of the inner and outer rings, dissipating considerable energy; during this process, the relationship between force and deformation remains linear. During loading, the external force P equals the sum of the spring's internal elastic force and friction. ABO represents the unloading process, which includes two stages: the AB segment and the BO segment. The AB segment indicates the situation where the load decreases, and the spring's elastic internal force overcomes static friction, gradually restoring the spring to its original state. The inner and outer rings of ring springs are made from high-quality carbon steel or wear-resistant alloy steel. Each ring is first roll-formed to the required shape to enhance its load-bearing capacity, followed by heat treatment. Ring springs are high-performance springs with significant buffering and shock-absorption capabilities (the ratio of area OABO to OACO can reach 60～70%), and are commonly used in buffering devices for heavy vehicles, artillery, and aircraft landing gear.

haas Spring Manufacturing Process

1) Cold forming process automation capability. Cold forming machines have developed up to 12 tools. Wire within the (0.3～14) mm range can be formed in a single operation on a 8-tool forming machine. Development directions for forming process equipment: (1) Increase forming speed; the main trend is to improve equipment forming speed, i.e., production efficiency; (2) Improve equipment durability by enhancing the precision of equipment components and strengthening heat treatment effects; (3) Add length sensors and laser rangefinders to implement automatic closed-loop control of the manufacturing process for CNC forming machines. 2) Cold forming process range capability. For large wire diameter spring coiling machines, the maximum specification can reach 20mm, =2000MPa, with a winding ratio of 5. Cold forming processes for variable-diameter or constant-diameter Minic-Block springs and eccentric springs still have limitations. 2) Hot forming process speed capability. In China, forming in the (9~25) mm specification range relies solely on CNC2-axis hot coiling machines, with a maximum speed of 17 pieces per minute. This represents a significant gap compared to developed countries. 2) Control capability for hot forming of large springs. Due to the exclusive use of CNC2-axis hot coiling machines, shape control lacks action in three directions, resulting in poor precision; furthermore, the absence of automatic bar rotation control and adjustment mechanisms means the level and capability of hot coiled spring forming processes are relatively low. Consequently, the precision level and surface oxidation/decarburization level of the springs are also lower.

Weidou Intelligent Technology specializes in selling German haas compression springs, haas extension springs, haas helical springs, haas wave springs, haas constant force springs, haas torsion springs, haas bending springs, haas disc springs, haas ring springs, haas leaf springs, haas torsion bar springs, haas tension springs, haas retaining rings, haas tension springs, haas die springs, haas original German imports. We welcome inquiries and orders from customers.