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Help to make a hole through an oblect with a round surface

martin_olesenmartin_olesen Member Posts: 7
Hi,

Is there an easy way to make a hole in an object with curved surface?
Lets say that i create a simple solid cylinder, how do i then make a hole through the cylinder from the side of the cylinder, on the round surface?
Would be great with a little video showing this...:-))

Comments

  • owen_sparksowen_sparks Member, Developers, Configurations EVP Posts: 916 PRO
    edited September 13
    I don't have a video but there are tricks.

    The hole feature is clever little beast.  The sketch point does not have to touch the part you want to cut.  This means you can have a planar surface anywhere you like, put a sketch on that (maybe making use of the "use" function to project the outline of the cylinder) and then make a hole.

    For a through hole all is simple, the clever bit is a counterbore.  OnS will keep projecting towards the part and only start the counterbore when it hits the part.

    EDIT:- It's actually even better than that.  It will make the counterbore a minimum of the required depth as seen in the screen-grab below for the off centre hole.

    I believe there's also a featurescript that will stick you a plane on the face of a cylinder too.

    Owen S.
    Production Engineer
    HWM-Water Ltd
  • owen_sparksowen_sparks Member, Developers, Configurations EVP Posts: 916 PRO
  • martin_olesenmartin_olesen Member Posts: 7
    Hello Owen S,
    Thank you very much for your kind reply.
    I am new to Onshape, and still messing a bit around with planes....i can see that you created a plane and put a sketch on that, but how did you creeate the plane....please excuse me my question.
  • owen_sparksowen_sparks Member, Developers, Configurations EVP Posts: 916 PRO
    Hi @martin_olesen

    No problem.

    In my example I used one of the default planes so no need to create one.

    However if you need a new plane in a different place then the create plane function has many options.  The simplest is the offset plane.  See here for good demonstration:-
    https://cad.onshape.com/help/index.htm#cplane.htm?Highlight=plane

    Regards,
    Owen S.
    Production Engineer
    HWM-Water Ltd
  • owen_sparksowen_sparks Member, Developers, Configurations EVP Posts: 916 PRO
    For creating lots of planes at once this is a great tool:-
    http://https//www.onshape.com/cad-blog/custom-feature-spotlight-multi-plane
    Production Engineer
    HWM-Water Ltd
  • martin_olesenmartin_olesen Member Posts: 7
    Thank you very much Mr Owen S, i think the key if for me right now, to get the fundamental understanding of planes, and how to define them, when i have an extruded part oblect.
  • owen_sparksowen_sparks Member, Developers, Configurations EVP Posts: 916 PRO
    Sounds like a plan.  Shout if you need help.

    Owen S.
    Production Engineer
    HWM-Water Ltd
  • martin_olesenmartin_olesen Member Posts: 7
    Thank you very much :-)
  • Jake_RosenfeldJake_Rosenfeld Onshape Employees, Developers Posts: 404
    This may help: https://cad.onshape.com/help/Content/cplane.htm
    It has lots of examples.
    Jake Rosenfeld - Modeling Team
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