Author Topic: torsion springs, extension springs, compression springs, and finishing info  (Read 5286 times)

Offline PTsideshow

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"The internet just a figment, of my imagination!' 
 
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Raise the Dead!
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and I'm working on the first two!
glen

Offline Bernd

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I'd like to add to Glenn's resources of spring makeing.

Brownell's Gunsmith Kinks book I and book II has spring making info in them.

These books may be gun related and not your cup of tea but they do contain many tips for the home shop machinist.

Bernd
Route of the Black Diamonds

Offline PTsideshow

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They also have a dvd on making flat springs that is also worth the money,it is for a gun part. But I have used it for other things. Brownell's  catalog and website has a lot of great stuff for the home shop person whether you are into firearms or not.
I will second his suggestion about them.
"The internet just a figment, of my imagination!' 
 
 There are only 3 things I can't do!"
Raise the Dead!
        Walk on water!
                 Fix a broken heart!
and I'm working on the first two!
glen

Offline PlanetSpring

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Re: torsion springs, extension springs, compression springs, and finishing info
« Reply #3 on: September 07, 2010, 05:41:22 PM »
Here are some calculators as well, that may help in the design process:

Compression Spring Calculator

Extension Spring Calculator

Torsion Spring Calculator

Springs are my thing!  :smart:

Offline Lew_Merrick_PE

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Re: torsion springs, extension springs, compression springs, and finishing info
« Reply #4 on: September 08, 2010, 01:46:55 AM »
Planet Spring,

Your links are munged.  Try:

Compression Spring Calculator (http://www.planetspring.com/pages/compression-spring-calculator-coil-calculator.php)
Extension Spring Calculator (http://www.planetspring.com/pages/extension-spring-calculator-extension-spring-calculation.php)
Torsion Spring Calculator (http://www.planetspring.com/pages/torsion-spring-calculator-torsion-spring-calculation.php)

Also, when I did a quick check of compression springs, (A) you listed the spring constant (k) in psi rather than lb/in and (B) you list a "maximum possible load" (in lb/in rather than lb) that would compress the spring to solid height (not a good thing) rather than the normally recommended "maximum allowable load."  My copy of the Spring Design Handbook is packed away or I would provide the nominal compensation values for maximum allowable loads.

Offline PlanetSpring

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Re: torsion springs, extension springs, compression springs, and finishing info
« Reply #5 on: September 08, 2010, 01:42:01 PM »
Thank you for the info, Lew!!

 :doh:

I'm working on changing that :)