Micro Compression Springs
Micro compression springs are small and miniature helical springs designed to withstand compression along their winding axis. Compression springs are the most common type of metal spring and can operate independently or within a guide rod or hole. When a load is applied to a micro compression coil spring, causing it to shorten, it exerts a force to return to its original length. These micro compression springs provide resistance to linear compressive forces (push) and are highly efficient energy storage devices.
The energy stored in a micro compression spring depends on its material properties, wire diameter, and the number of coils. The micro spring's stiffness, known as its rate, is determined by the wire diameter and coil count. Rate is the change in force per unit change in length, measured in pounds per inch or newtons per millimeter. Adjusting the wire diameter or coil count allows for rate customization.
Micro Compression Spring Applications
Micro compression springs find use in a wide range of applications, including medical applications, electronic devices, cell phones, electronics, and sensitive instruments.
Custom Micro Compression Springs
Dayon Spring offers extensive
custom micro compression spring capabilities and
engineering support, from design to production. Custom micro compression springs can be made in various sizes and materials, including stainless steel, carbon steel, chrome silicon, and music wire.
Dayon Spring provides advanced capabilities, such as quality control systems, expertise in regulations like RoHS, REACH, and DFARS, CAD-assisted product design, in-house prototype production, and a global supply chain network. They are ISO 9001:2015 certified, REACH and RoHS compliant, and ITAR Registered. Whether for short-run R&D projects or large, long-term orders, Lee Spring can fulfill custom compression spring needs.
Key Micro Compression Spring Design Parameters
Rate: The change in load per unit deflection, measured in pounds per inch (lbs/in) or Newtons per millimeter (N/mm).
Stress: Spring stress is determined by dimensions, load, and deflection requirements. It is most significant at the wire's surface and varies as the spring is deflected. Stress and stress range affect the spring's lifespan.
Outside Diameter: The diameter formed by the outer surface of the spring coils.
Hole Diameter: The space where the compression spring is inserted. It is often mistaken for the spring's dimension and should be larger than the spring's outside diameter, accounting for tolerance and spring expansion under load.
Rod Diameter: The rod inside the compression spring, serving as a guide shaft to prevent spring buckling. It should be slightly smaller than the spring's inside diameter.
Free Length: The spring's length when unloaded, including anchor ends for extension springs.
Wire Diameter: The diameter of the spring's raw material.
Solid Height: The spring's length when fully compressed.
Spring Set: Permanent deformation that occurs when a spring is loaded beyond its material's elastic limit.
Load at Solid Height: The force required to fully compress the spring. Useful for designing to avoid bottoming out the spring.
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