Yet Another Post About Modeling Threads

[Anonymous]

Hello Everyone,

So I've got this part and I've attempted to model thread onto a shaft (some thread dims assumed) equivocating roughly to 1-8 UNC. I did this once with a normal coil followed by a tapered coil to simulate the "trailing threads" or however they may be more appropriately refered to however I was not completely satisfied with the result due to 1. unfavorable geometry at the start of the taper and 2. thread profile not perpendicular to path.

So I decided to try to implement something that I've done in the past and create a 3D sketch to draw a path and make a plane for the profile and sweep. Everything seems to work fine until I create the sweep cut when I get an error saying that it doesn't produce a meaningful result. Additionally, I'm able to sweep it as a new solid, then if I try to combine cut, I get an error stating that it doesn't result in a change of geometry (or something like that).

I've attached the part file. All geometry and sketches are controled by user parameters.

Anybody know why I'm getting these errors while trying to make this sweep? I kind of just did this for fun... just to see if I could get it to work and look right. So no rush.

Thanks,

[mnemetchek]

Could you make a left hand version of your TreadiFeature for me? That would be awsome!

Thanks

Myles

[mnemetchek]

Could you possibly share the iPart that you used to create the iFeature? I noticed that your NPT is 55° and not 60° like we use in North America  ;^)

Thanks

Myles