Threading

[Anonymous]

Hallo, I have a simple question. I'm realitivly new to this program, I'm trying to thread a section cylinder. I do know of the shortcut to thread surfaces but the issue I'm having is that what I do removes material by putting the threads height into the surface. What I'm trying to do is create a threading that is raised, only by the thread height while it will be sandwiched by one raised section of the cylinder and one section having the diameter I specified of the cylinder.

Basically this cylinder is to be threaded onto an additional specified thread pitch tube with a bare shoulder lower than the threads maximum height. It's rather simple, what I am designing is just a tail cap to a flashlight.

So how can I create threads on a surface that add material and not remove them? Do I need to know the height of the threads, and create a cylinder that has a thickness the same as the threads and add threads to this? I am using a metric system. 

[etfrench]

Fusion 360 will automatically make the threads at the specified major diameter size no matter what size cylinder is selected.  The screencast shows making a 6mm thread on a 5mm shaft:

[Anonymous]

Hi! It seems I forgot to mention the threading is inside of the piece, so I'm not sure how to go about this. This link will show an example of the piece I'm trying to design after. http://imgur.com/gallery/2pbOXRs  

[TheCADWhisperer]

Split Face 

or 

2 diameters.

Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply?

[etfrench]

It works the same way on both inside and outside threads.  You can have any diameter to start, then select the major diameter (for outside threads) or minor diameter(inside threads) in the thread dialog.  Deselect "Full Length" in the thread dialog in order to set the begin and end points of the thread.

[Anonymous]

this is a prototype, i will need to add additional threading but that part is unknown right know. IDK why but the threading im after just is not working because i need the top of the threads to have a diameter of 21mm

[etfrench]

It would be best to specify minor diameter and/or major diameter instead of the top when discussing threads.  Top could be interpreted as either the major or the minor diameter.

I think this is what you want:

This was done by:

1. Suppressing current thread.
2. Moving timeline to the thread position.
3. Extruding the step to 5.3mm from the front of the model.
4. Creating 22mm x 1.5 thread 10mm long on the step.
5. Creating a chamfer on the thread start by using the Project/Intersect command and drawing a profile to rotate and cut the chamfer.
6. Moving the timeline to the end.

If you want to make the inner diameter precisely 21mm, use the Press/Pull command on the inner face of the step.