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Creating a drill angle

jordan_lindsey
jordan_lindsey Member Posts: 3 ✭✭
in Community Support
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.
 
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Answers

  • larry_hawes
    larry_hawes Member Posts: 478 PRO
    edited April 2018
    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
    larry_hawes Member Posts: 478 PRO
    edited April 2018
    Or more specifically?

    http://www.youtube.com/watch?v=BvemihuchIY
  • brian_brady
    brian_brady Member, Developers Posts: 505 EDU
    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
    mahir Member, Developers Posts: 1,324 ✭✭✭✭✭
    edited April 2018
    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
    larry_hawes Member Posts: 478 PRO
    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
    NeilCooke Moderator, Onshape Employees Posts: 6,103 image
    @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?
    Senior Director, Technical Services, EMEA

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