Notch Inside Cylinder

[lpurvin]

I am trying to create a pair of  L shaped notches inside a cylinder that I can use to twist-lock the cylinder on to something.  The something would have a pair of tabs on each side and be inserted into the cylinder and twisted to lock it in place. An example is shown in the attachment.  

I'm new to Fusion 360 and CAD, so keep it simple for the stupid.

Thanks,

Doug

[TheCADWhisperer]

For a simple design - Extrude to offset of cylindrical face..

Or Split Face and Thicken.

[lpurvin]

Thanks for your response. I see how that can get me the base to rest the something on. But I'm having troubles making the notch that the something's lugs lock into.  See the attached.

Thanks again,

Doug

[laughingcreek]

one simple way (see attached model)

[TheCADWhisperer]

See the Attached file demonstration of both techniques.

[chrisplyler · Accepted solution]

https://knowledge.autodesk.com/community/screencast/20a260fd-adb1-460d-9a79-3d65bea1486f

[lpurvin]

Wow.  You taught me so much.  That did the job just fine, but I never, never would have got that on my own.

Thanks,

Doug

[pirwin7WQ6C]

I know this is an old post but I am trying to design something like this but when you close it, it will lock in place with a nice click. What kind of feature could I add to achieve this?

[chrisplyler]

That depends on the size, shape, and material of the tabs and the cap. Are they both plastic, such that they can flex a little bit under the force exerted by hand?

Position the L notch such that the tab will not quite reach the horizontal groove, but round off or ramp the inside corner of the L such that it will guide the tab to flex slightly as you twist. At the far end of the horizontal groove, place a little notch such that when the tab reaches that final position, it will spring back into an unflexed state. Ramp that little notch such that the tab will flex back up when you try to twist the cap back off.