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Published on Jun 16, 2011
Helical Machined Springs | Resolved Moments During Compression
The Problem: Single start springs do not have even loading when compressed or extended
The Solution: Multiple start Helical Machined Springs
Watch as three springs with equal spring rates are put into a manual spring compression device with a spherical ball attachment to allow for lateral movement.
Spring #1: Wire wound spring – As the spring is compressed, the lateral forces act on the ball and the spring pops free of the load.
Spring #2: Single start machined spring – Acts similarly to a wire wound spring, flexing unevenly, and allowing the lateral forces to act on the ball.
Spring #3: Double start machined spring – Stays under the load as it is compressed much farther than either of the other two, only popping free with the manual intervention of our quality engineer.
Single start machined springs, and traditional wire wound springs, load unevenly, producing unresolved moments. Helical double and triple start machined springs load evenly across the spring face, remaining parallel as the spring is deflected, producing resolved moments.