Spring Calculation

[Speedy Builder5Participant @speedybuilder5]

I am not promoting this site, neither dissing it, however the video of spring manufacture is more than interesting also look at the FAQs where spring design / specification is explained. Ps, click on the UK flag for English

**LINK**

BobH

[Speedy Builder5Participant @speedybuilder5]

Interesting website

[Nick HulmeParticipant @nickhulme30114]

I find an old copy of Machinery's Handbook more useful, it even gives you good starting points for mandrel size/finished diameter for a wide range of gauges of piano wire.

[Martin WParticipant @martinw]

Wasn't there an article in MEW sometime ago about springs, spring winding and calculations for achieving the required force, or have my grey cells finally petered out ?

[Neil WyattModerator @neilwyatt]

A comprehensive series by Linton Wedlock in MEWs 234, 235 and 236.

Neil

[Ian Newman 1Participant @iannewman1]

Hi,

For small (model sizes) springs, the "standard" formulae do not work as they tend to be based on simple torsion rather than a helix

"The Model Engineer's Handbook" by Cain, or "Spring Design And Manufacture" (same author) are your friends in this task

All the best,

Ian

[John PurdyParticipant @johnpurdy78347]

There was also a 10 part series in ME by Tubal Cain on spring calculations. It started in 1986, Vol. 157, #3783 an ran to 1987, Vol. 159, #3807. While I don't have his book from the Workshop Series I suspect that a lot of the material is the same.

John

[Howard LewisParticipant @howardlewis46836]

If you don't fancy designing and winding your own springs, Peterborough Society of Model Engineers members used to use Vincent Springs, who were fairly local.

I found designing springs frustrating. Since having arrived at a spring that would fit into the space, (Open and closed ) with the required rate, and provide the load, only to find that the wire would be overstressed. The next iteration would be within the stress, but would not fit; and so on. So found it quicker and easier to pass the job over to the experts!

Not too long ago, there was a good series on spring design, using graphs, in M E W, which would be useful.

Howard.

[Neil WyattModerator @neilwyatt]

Posted by Neil Wyatt on 02/02/2019 12:49:01:

A comprehensive series by Linton Wedlock in MEWs 234, 235 and 236.

Neil

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