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Rotation During Compression | Helical Products Company
Traditional compression springs rotate when compressed.
Find out how the Machined Spring by Helical Products Company prevents this rotation.
3 Springs, Equal Spring Rates, Equal Deflection Each spring is mounted on a free rotating thrust bearing During the test, watch as a single start compression spring rotates some and a double start compression spring rotates a little more due to a higher lead Flexure.
Then watch as our machined spring does not rotate at all. Why? Opposing Flexures!
Since our machined spring is manufactured from a single-piece of source material, designing a left and right handed coil into the same component allows us to cancel out the rotational force of more traditional compression springs.
Helical Machined Springs | Pure Moments with Torsion Springs
A pure moment is rotation without translation.
To show the benefits of our Helical Machined Springs, we load two different wire wound and three different machined springs into a manual torsion testing device.
Applying a force to each knob creates torque and deflects the corresponding spring.
Wire Wound Springs & Unresolved Moments
Spring #1: A traditional, wire wound torsion spring. Result: Force at a distance causes bending and some rotation.
Spring #2: A traditional, wire wound torsion spring on a mandrel. Result: The mandrel prevents the spring from bending, but results in rubbing.
Helical Machined Springs & Pure Moments
Spring #3: Machined spring with slotted end attachment. Result: No mandrel and no bending.
Spring #4: Machined spring with hex end attachment. Result: No mandrel and no bending.
Spring #5: Machined spring with flange pin attachment. Result: No mandrel and no bending.
Pure Moments with Torsion Springs | Helical Products Company
Rotation During Compression | Helical Products Company
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. Why? 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.
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