non-standard threads or more options

[Anonymous]

'm trying to model a light bulb, but I can't get the thread right because (as far as I know) nonse of the standard thread options included in F360 are suitable.

How do I have to make this work? and is it maybe a good idea to allow deviating from standards and setup custom threads?

 

This is what I have now, using coil instead of thread. it is way off and getting the bottom right is especially tricky.

It would be great if "coil" would have an option to follow (stick to) a body.

this is what I need.

[Anonymous]

Does this help?

Fusion 360 Custom Thread Modelling

[Anonymous]

That a neat trick if you want to model something that 'looks sort of right' but if you are applying it in a true engineering environment it's doomed to failure. Threads need to be defined closely from accurate measurement (or specification if that's available), or tolerances will trip you up.

I raised a suggestion a little while back that thread variables should be able to be user defined, and although the pre-defined standard threads are very useful many is the situation in the real world where you need to match an existing non standard thread accurately.

[Anonymous]

You are 100% correct, but you asked about modeling not dimensioning.  

As far as I am aware, after you make the thread cosmetically similar you can switch into dimensioning mode to edit the created features.

You can then Lookup the standard that defines the E27 (or whichever is applicable) thread and apply the root, pitch, etc dimensions to the model.

It's not rocket surgery from there.

That said, I'm not sure how Fusion handles a good multi-start, but I'm sure there is a way.

[henrycasson]

I used to work with some rocket surgeons. Like it

[Anonymous]

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@Anonymous wrote:

Does this help?

Fusion 360 Custom Thread Modelling

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thanks, I already watched that video, and it's probably the least worst option at the moment, but it doesn't allow for the threads to follow a non-linear tapering cylinder like the bulb's bottom part.

I think Fusion 360 just has to allow custom options in the "thread" tool instead, so that you can create custom threads with more accuracy. Using coil is okay, but not very accurate and not very clean either, but right now, it's probably the only option plus a lot of manual modeling for the tapered bottom part.