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Coiled Compression Springs from Music Wire
Coil springs are wound from wire. In a coiling machine, rollers pull straight spring wire into guides that bend it into a helix; the tooling sets the spring's shape. Coiling leaves stresses in the wire, so the springs are then stress relieved at a raised temperature. The ends of compression springs are often ground flat, around 270° of the end coil, so the spring stands square.
Intermediate
Seconds per spring (industrial)
Instructions
1
1
Feed the wire
Feed the wire
Music wire is fed from its coil into the coiling machine's feed rollers.
Materials for this step:
Steel Music Wire 0.032"1 kgTools needed:
Spring Coiling Machine2
2
Coil
Coil
The rollers push the wire into guide tooling that bends it into a helix.
Tools needed:
Spring Coiling Machine3
3
Stress relieve
Stress relieve
The springs are heated in an oven to relieve the stresses left by coiling.
Tools needed:
Annealing Oven4
4
Grind the ends
Grind the ends
The end coils are ground flat so the spring stands straight.
Tools needed:
Bench Grinder5
5
Check
Check
Free length, outside diameter and wire size are measured.
Tools needed:
Digital Caliper 6-InchMaterials
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Tools Required
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