A tension spring is a helical coil spring designed to resist stretching forces, commonly used in tensioning mechanisms to maintain proper tension in mechanical systems.
Commonly used trade names and technical identifiers for Tension Spring.
This component is used in the following industrial products
A mechanical component that applies and maintains precise tension on the cutting blade in an industrial dough divider.
A critical component in industrial sewing machines that regulates and maintains consistent thread tension during stitching operations.
A mechanical system that regulates and maintains consistent thread tension during the stitching process in leather sewing machines.
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Tension springs are designed to operate under tensile (pulling) forces and typically have hooks or loops for attachment, while compression springs work under compressive (pushing) forces and have plain ends. Tension springs are close-wound and stretch under load, whereas compression springs are open-wound and shorten under load.
The spring constant (k) is calculated using the formula k = Gd⁴ / (8D³N), where G is the shear modulus of the material, d is the wire diameter, D is the mean coil diameter, and N is the number of active coils. Alternatively, it can be determined experimentally by measuring force versus extension.
Common failures include fatigue fracture due to cyclic loading, permanent set from over-extension, corrosion in harsh environments, and hook/end failure from stress concentration. Proper material selection, design for fatigue life, and regular inspection can mitigate these issues.
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