Creating a drill angle

jordan_lindsey

Hey guys, quick question. I am working on a drawing for a friend and essentially he has a 19mm hole that is being cut 10mm deep, then he has a 10mm thru hole in the middle of the 19mm hole, so I guess more of a counterbore. He needs a 118 degree angle but I can't figure out how to do it. I attached the picture. Where I'm at is in black, and red is what needs done. Any help is appreciated! Thanks.
 

larry_hawes

Can you revolve that cut/remove area and angle through the area you want cut? Create a plane or sketch line normal to your revolve, set all your angles and depths and revolve/remove that area?

http://www.youtube.com/watch?v=2j_t9f2R-5M

larry_hawes

Or more specifically?

http://www.youtube.com/watch?v=BvemihuchIY

brian_brady

larry_hawes said:

Or more specifically?

http://www.youtube.com/watch?v=BvemihuchIY

Yuck. The feature is no longer a "hole" it's a revolve. When exporting to CAM, the feature will likely need extra work to make it a hole that gets processed by a drill. In a past life I would have used a custom step drill for making that hole (pretty easy to get from good drill suppliers). Therefore, I would like to model it as a "hole" with custom counterbore shape. It would be nice if Onshape can add specialty hole treatments like this, even if the shape has to come from a sketch (Creo does this).

While on the subject of holes, when is Onshape going to allow tapped holes to have custom chamfers or counterbores while retaining tap information?

Brian

mahir

It's a little messy, but you can accomplish the same thing by applying a chamfer to a counterbored hole. You just have to make sure the chamfer length is equal to the difference of the inner and outer radii.

larry_hawes

I should have qualified my answer above as merely an attempt to be helpful as I am no expert in such things. I hope I didn't add to any confusion.

NeilCooke

@larry_hawes you didn’t. Your solution is as good as any. 

If it needs to be kept as a hole feature then why not create 2 holes as per the specified requirements? One hole 10mm thru and one hole 19mm blind?