Basically what I am trying to figure out how to do is if you were to run an end mill thru a cylinder perpendicular to its axis and then rotate the mill side to side 23 degrees each way like shown in the pic below. Can anyone figure out an easy way to do this? My brain is just not working on all cylinders today.
Thanks in advance,
Chris
how about this?
Unfortunately I'm still running SW12 so I cannot open the file. Can you explain how you do it? I tried it by doing one cut straight thru then two more at the 23deg angle and then tying to do a revolve to clean up the leftovers with no luck due to zero thickness geometry error. I also forgot to mention that there is a 8deg max draft on it.
Chris
I used this sketch on a plane perpendicular to the cylinder to make an extrude cut to the diameter of the cutter
then added fillets
and I don't know what you need for draft - currently there are faces with down to 0 degrees, but that meets the 8 degree max
Didn't even think about doing it that way. That gets me pretty close but how would I go about adding a 5deg draft to that?
Chris
is it 5 degrees add all around? (making the sides 28 degrees?) Maybe if you could sketch what you expect it to look like with the draft...
Check if this helps (video only)
Basically doing half side cut, adding draft and fillet. Finally mirror.
If you run the end mill all the way through first (so your draft starts at the bottom, not the middle) it would seem easiest to make a plane tangent to the circle perpendicular to one of the 23deg planes.
Then extrude cut that with draft.
Then mirror that to get the other extent.
Then I'd try switching to surfaces to get rid of the in-between (or a loft-cut depending on what the result to this point looks like and what you can use to define the sketches).
(Sorry I can't give you an example file, I've got simulations running on both my machines so I don't want to risk crashing by opening another window.)
chris, try an extrude from the middle plane, up and draft outwards, then mirror
chris, did you try a loft extrude?
I was able to figure it out using the method Jeremy suggested. I noticed on the print that the draft was a max value so it is not needed as we are machining it from a solid rod. Thanks everyone for your suggestions as they were much appreciated!!!
Chris
arnt you glad to get paid to do this
I used this sketch on a plane perpendicular to the cylinder to make an extrude cut to the diameter of the cutter
then added fillets
and I don't know what you need for draft - currently there are faces with down to 0 degrees, but that meets the 8 degree max