Help to design/build a table top electric powered winder?

[yarnspinner]

Hi everyone, is this a good place to ask for details of designing and building a table top electric powered winding system?

If not thanks for letting me know.

 

[anorlunda]

Give us your requirements, and we'll see.

 

[berkeman]

Welcome to the PF.

Sounds like a fun project! Are you sure you want to make it powered? What types of coils do you plan on building? How many and how often? One of our engineers had a hand-powered coil winder that he used to bring in when we were winding our own prototypes of communication transformers. Pretty neat little tool.

Something like this: https://ssli.ebayimg.com/images/g/EFwAAOxyrrpTjpl7/s-l1600.jpg

 

[jrmichler]

It all depends on your requirements. The photo below shows the parts for a setup to wind a replacement spring for a trash pump mechanical seal from 0.125" 302SS spring wire. This particular spring is a reject. That spring was wound on that mandrel. And yes, there really is that much springback.

 

[Dr.D]

And yes, there really is that much springback.

I'm really not an expert on spring winding, but I believe that the spring back could be reduced by higher winding tension. This will cause more extensive plastic deformation in the spring material and thus more permanent deformation.

 

[jrmichler]

Higher winding tension does reduce springback. Unfortunately, the 302SS spring wire is cold drawn to a yield strength of about 250,000 PSI. The required winding tension would be high enough to yield almost the entire cross section of the spring wire. That tension would be about 3,000 lbs, which is way beyond the capacity of my lathe.

 

[Dr.D]

Higher winding tension does reduce springback. Unfortunately, the 302SS spring wire is cold drawn to a yield strength of about 250,000 PSI. The required winding tension would be high enough to yield almost the entire cross section of the spring wire. That tension would be about 3,000 lbs, which is way beyond the capacity of my lathe.

I guess we are not permitted to have our cake and eat it as well!

 

[Averagesupernova]

Apparently everyone has overlooked the obvious. The OP's username implies they are not winding wire.
Edit: ALMOST everyone.

 

[berkeman]

Apparently everyone has overlooked the obvious. The OP's username implies they are not winding wire.
Edit: ALMOST everyone.

Doh!

 

[OmCheeto]

Apparently everyone has overlooked the obvious. The OP's username implies they are not winding wire.
Edit: ALMOST everyone.

I was going to mention that my sewing machine has a built in thread winder, but that looks a bit to small from this implication.
Perhaps a DIY Kite string winder would work.
Being portable, you could:

1. watch TV while winding yarn.
2. make sure the soup doesn't boil over while winding yarn.
3. wind yarn while "doing your business", if you know what I mean.
4. etc, etc, etc.​

 

[Dr.D]

If we are to be held to interpreting the names of posters, both the OPs and others, the prospects are truly frightening!