German federnwerk springs federnwerk models federnwerk prices

federnwerk springs consist of tension springs and connecting springs. The pitch and helix direction of the tension springs and connecting springs are identical. A special fixture is used to clamp one end of the tension spring and screw it into the connecting spring. The other end of the tension spring is then rotated and fitted onto the other end of the connecting spring. Rotational force is used to screw the connecting spring into the interior of the tension spring, forming a ring spring. The utility model ring spring does not affect the shape and elasticity of the connection part, and the connection is secure, making it suitable for various applications requiring ring springs. The ring spring is composed of alternating stacked washer-like spring steel discs with inner conical surfaces and outer cylindrical surfaces, and washer-like spring steel discs with inner cylindrical surfaces and outer conical surfaces. The number of pairs of inner and outer rings of the ring spring is determined based on the magnitude of the load it bears and the deformation requirements. Ring springs are applied in situations where space is limited and strong buffering is required.

federnwerk spring installation and removal

Hydraulic hand pallet trucks are widely used in production. During maintenance of their pressure oil pumps, we found that the pressure spring responsible for returning the piston rod of the pressure oil pump and the pressure arm of the truck has a wire diameter of n and stores elastic force up to 1000N, making its installation and removal very difficult. This often delays troubleshooting time and directly affects production progress. Some measures were taken, but the results were unsatisfactory. Therefore, I designed a pressure spring installation/removal tool as shown in Figure 1. The tool consists of a lower pressure lever 1, pressure blocks 10, connecting pins 14, nuts 1, spherical washers 12, upper pressure lever 13, positioning sleeves 16, and levers. During operation, rotate the nut 11 to an appropriate position so that the cylindrical head claw of the lower pressure lever 1 contacts the vehicle body 2. The two pressure blocks 10 press symmetrically on the washer 6. Rotate the nut n to tighten the pull rod 15, causing the upper pressure lever 13 and lower pressure lever 1 to move relative to each other, forcing the pressure spring to compress. When the washer 6 separates from the cylindrical pin 7, the pressure wheel shaft 9, pressure wheel 8, and cylindrical pin 7 can be removed. Then, loosen the nut 11, remove the installation/removal tool, and take off the pressure spring to disassemble, inspect, and repair the pressure oil pump. The positioning sleeve 16 on the installation/removal tool is a key component. During manufacturing, one end has an inner spherical surface with a slot hole in the middle, and the other end has an inclined flat surface. It has an interference fit with the pressure lever. It is required to have good contact with the spherical washer 12 and the ball head of the lever 15. The pressure block 10 and connecting pin 14 have a clearance fit, requiring flexible rotation. The connecting pin 14 and upper pressure lever 13 have an interference fit. The connecting shaft 18 and pressure lever have a clearance fit.

federnwerk spring classification

1) Torsion springs: Torsion springs (torsional springs) utilize the principle of leverage. By twisting or rotating elastic materials that are soft and have high toughness, they store significant mechanical energy. These springs withstand torsional deformation, and their working parts consist of coils that are either closely wound or spaced apart. The ends of torsion springs are processed into various shapes of torsion arms, ranging from single torsion to double torsion, and even various torsion bar deformations, depending on the design. Torsion springs are commonly used in balancing mechanisms in machinery and are widely applied in industrial production such as automobiles, machine tools, and electrical appliances. 2) Compression springs: Compression springs are helical springs that withstand axial pressure. Springs are generally classified into constant-pitch springs and variable-pitch springs. Shapes of compression springs include cylindrical, conical, convex, concave, and a small number of non-circular forms. There is a certain gap between the coils of compression springs. When subjected to external loads, the spring contracts and deforms, storing deformation energy. Variable-pitch springs are becoming more common; they are no longer just constant-pitch springs. Variable-pitch springs can perform different functions in different environments. 3) Carbon nanotube springs: The diameter of carbon nanotube springs can reach hundreds of micrometers, while their length can reach several centimeters. Their spinning structure has broad application prospects, with potential uses in stretchable conductors, flexible electrodes, micro strain sensors, supercapacitors, integrated circuits, solar cells, field emission sources, and energy dissipation fibers. This provides the possibility of preparing visually visible carbon nanotube electronic devices. They are also expected to be applied in medical devices, such as tension-sensing bandages. This new structure can also be developed into multifunctional carbon nanotube fiber composites for utilization. 4) Tension springs: Tension springs are helical springs that withstand axial tensile forces. Tension springs are generally manufactured using round cross-section materials. When not under load, the coils of tension springs are usually tightly closed with no gap. They work by utilizing the rebound force (tensile force) after stretching, used to control the movement of components, store energy, measure force magnitude, etc., and are widely used in machines and instruments. Hook forms include side-hook tension springs, long-hook tension springs, British-hook tension springs, German-hook tension springs, semi-circular hook tension springs, duck-bill hook tension springs, etc. Materials include stainless steel, music wire, high-carbon steel, phosphor bronze, beryllium copper, and oil-tempered alloy spring steel. 5) Air springs: Air springs are non-metallic springs that achieve elastic action by adding pressurized air into a flexible sealed container, utilizing the compressibility of air. They can be roughly divided into bladder type and diaphragm type. Air springs have excellent elastic characteristics. When used in suspension systems of high-end vehicles, they can greatly improve vehicle smoothness, thereby significantly enhancing riding comfort. Therefore, air springs are widely used in automobiles and railway locomotives. In addition, due to many advantages compared to ordinary steel springs, air springs are also applied in some mechanical equipment and precision instruments.

federnwerk spring applications

1) For blacksmiths: Because leaf springs are made of higher quality steel, they are a favorite material for blacksmiths. In countries such as Nepal, Bangladesh, the Philippines, and Pakistan, where traditional blacksmiths still produce a large number of tools, leaf springs from scrapped cars are often used to make knives and other tools. 2) Used in trampolines: Leaf springs have replaced traditional helical springs in some trampolines (known as soft-edge trampolines), which improves user safety and reduces the risk of concussion. Leaf springs are spaced around the frame "legs", branching from the base frame to suspend the jumping mat, thereby providing elasticity. 3) Used in clutches: The "diaphragm" commonly found in automotive clutches is a type of leaf spring.

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