Spring Types PDF

SPRING What is Spring? It is an elastic object that stores mechanical energy and is usually made of steel. When a conventional spring (without stiffness) is compressed or stretched from its rest position, it exerts an opposing force approximately proportional to the change in length. The ab...

SPRING What is Spring? It is an elastic object that stores mechanical energy and is usually made of steel. When a conventional spring (without stiffness) is compressed or stretched from its rest position, it exerts an opposing force approximately proportional to the change in length. The ability to “spring back” to its original state when bent of contorted. This “springiness” is what makes many metals the ideal materials for spring and custom wire forms. Springs are flexible machine elements that store mechanical energy when subjected to tensile, compressive, bending, or torsional forces. When the spring was deflected, it stores energy and, at the same time it exerts an opposing force. TYPES OF SPRING Helical Spring This are regarded as the most common type of spring in product manufacturing. These types of springs are wrapped so that they look like a thread. Wires in a helix shape (like the name) with different cross- sections can form helical springs. Extension Spring Extension springs are designed to absorb and store energy, as well as to resist pulling force. When pull force is applied, it results in the extension of the spring. Unlike compression springs, extension springs are closed coils and are also known as tension springs. Torsion Spring Torsion springs work by rotating their end along their axis, a flexible elastic object that stores mechanical energy when twisted. When it is rotated, it exerts torque in the opposite direction, which is proportional to the amount of rotation. Compression Spring The compression spring is usually of coil type, which offers resistance to the force exerted to compress the spring. These are usually pressed or squeezed by the load and can resist compressive or push force. Spiral Spring Spiral springs consist of coiled wire usually in a flat spiral or a helix shape. These springs are commonly used for energy storage. These types of springs are made by joining rectangular metal strips to plane spirals. Disc Spring Also known as Belleville springs, these are ideal for high-load applications, especially where space is limited. This spring is composed of a convex disc where the outer edge is driven opposite the center of the disc. Due to this, it creates a high spring force within a small area of movement. Leaf Spring A leaf spring made of several strips of metal curved slightly upwards and clamped together on top of each other. It is a simple form of spring commonly used for suspension in wheeled vehicles. These are made of rectangular metal plates, also known as leaves. Linear Spring The linear spring has the same diameter along its entire length, and this uniform diameter provides it with a constant spring rate. In other words, the rate of the spring does not change regardless of the load acting on the spring, and the deflection of the spring will be proportional to the applied force. Variable- Rate Spring The spring rate of variable-rate springs increases with spring deflection. A variable- rate spring does not have the same spring rate across its axial length and is usually not constant or linear. These springs are employed when the manufacturer wants to control the spring rate. Flat Spring Flat springs generally come in all kinds of shapes and sizes. These are made from steel and are ideally suited for applications where space is limited or where spring can be used as part of a mounting assembly. Machined Spring A machined spring is a piece of material that has been precisely designed and machined to the spring characteristics. As the name suggests, machined springs are typically made on CNC lathes and mills. Molded Spring Molded springs are nothing but plastic or composite springs commonly found in corrosive environments such as food production, medicine, and marine applications. Because of the creep, molded springs should be used only in irregular cycles. Serpentine Spring Serpentine springs zigzag on the seat or back and provide excellent comfort and durability. These springs are springs made from steel wire shaped into a continuous (S) shape. Gas Spring A gas spring uses compressed gas (Nitrogen gas and oil) within an enclosed cylinder sealed by a sliding piston to store potential energy pneumatically and to withstand an external force applied in a parallel direction of the piston shaft. Balance Spring It is a spring that is attached to the balance wheel in a mechanical timepiece. This causes the balance wheel to oscillate with a resonant frequency when the timepiece moves. It controls the speed at which the timepiece's wheels turn, thus the rate of movement of the hands. THANK YOU!!!