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Boge 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, including hairsprings in mechanical watches, power springs in toy gyro guns, and torque bars in tanks and automobiles. Torque bars are compact yet provide 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, including hairsprings in mechanical watches, power springs in toy gyro guns, and torque bars in tanks and automobiles.

Boge spring features

1) High stiffness, strong buffering and vibration absorption capability, capable of withstanding heavy loads with small deformation, suitable for applications with limited axial space. 2) Features variable stiffness characteristics, offering a wide range of non-linear properties. 3) Using the same disc springs in different combination methods allows for significant variation in spring characteristics. Combinations can be arranged in opposing or stacked configurations, or by combining different thicknesses and numbers of discs. 4) When stacked, for the same deformation, the greater the number of springs, the higher the load capacity. 5) Short stroke, heavy load, compact space requirement, convenient for combined use, easy maintenance and replacement, economical, high safety, and long service life.

Boge spring composition

Ring springs are a type of compression spring composed of several inner and outer rings with conical 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 cone angle b of the rings is greater than the friction angle, the spring restores its original dimensions under elastic internal forces. When ring springs bear axial P, significant friction is generated between the conical contact surfaces of the inner and outer rings, dissipating considerable energy, while 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 force. ABO represents the unloading process, which includes two stages: the AB stage and the BO stage. The AB stage 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 of 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-strength springs with significant buffering and vibration absorption capabilities (the ratio of area OABO to OACO can reach 60～70%), commonly used in buffering devices for heavy vehicles, artillery, and aircraft landing gear.

Boge spring applications

1) For blacksmiths: Because leaf springs are made of higher-quality steel, they are a preferred material for blacksmiths. In countries such as Nepal, Bangladesh, the Philippines, and Pakistan, where traditional blacksmithing still produces a large volume of tools, discarded vehicle leaf springs are often used to make knives and other tools. 2) Used in trampolines: Leaf springs have replaced traditional coil springs in some trampolines (known as soft-edge trampolines), improving user safety and reducing 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 common 'diaphragm' in automotive clutches is a type of leaf spring.

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