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Derek Evans & Randy Kingsbury

Compression and Extension Springs

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We will cover

Technical aspects

Benefits of Machined Springs

Demonstration

Hands on

Industry opportunities for compression and extension springs

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AttachmentsWhat attachments are available for wire springs???

Compression

Extension

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Attachments

What attachments are available for Machined Springs???

Endless possibilities!

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Single Start Compression

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Double Start Compression

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Integration of features

Combine multiple-part assemblies into a single part.

Reduce assembly time

Reduce parts count & increase reliability

Reduce parts in inventory

Lean

Purchasing

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VideoMultiple parts replaced with a machined spring.

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Before and After

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Value Added Sell

Time to manufacture and test a series of springs

Time to manufacture a full set of 20 possible end caps

Inventory costs of both

Time to evaluate system to determine what force at height is required

Match parts, install and test

OR

Drop in a Helical Machined Spring

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Before and After

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Before and After

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Before and After

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Multiple Starts

Balanced loading

Squareness Under Load

Tailoring spring rate

Redundancy

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Squareness Under Load

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No Twisting/Rotation during compressionA. 2 Flexures on one part: One Right and one Left hand Flexure OR

B. Inner and Outer spring wound opposite

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No Rotation Demo

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Precision

Machined Springs can offer greater precision

Tolerance on spring rate or on force at installed position.

±20%

±10%

±5%

±2%

±1%

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Stress

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Applications

Oil exploration

Corrosive environment

Valve application

Balanced loading with double start

High forces with small OD

550 lb with .625in OD

(2,447 N with 15.9mm OD)

Potential: Unknown

Price: $1100 each

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Applications

Tooling and Die application

High cycles

High wear

High stress

Combine surrounding parts

Simplify installation

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Applications

Aircraft Engine (Flexure fact #34)

Precise spring rate

High stress

Integrated threaded holes

In production for over 20 years

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How to sell Compression & ExtensionMachined Springs

Where are they a good fit?

Selling a solution…”Value Added”

When are they not a good fit?

Use the EPF

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Applications

Testing Equipment

High Force, large size

Custom threaded attachments

Had to fit into existing hardware

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Applications

Analysis Equipment

High cycles

Small area

High forces (replacement of a Bellville stack)

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Next

Torsion Springs

Michael Haber & Randy Kingsbury