chamfer or swept cut on an elliptical edge ?

Discussion in 'SolidWorks' started by Rocco, Apr 21, 2006.

  1. Rocco

    Rocco Guest

    I have something that should be easy to do, but is not in practice. I
    have a tube cut at an angle. I want to bevel the angled edge (now an
    ellipse) all the way around for weld prep. The chamfer function balks
    at this. A swept cut would seem to be the way to go, but I get all
    kinds of funky cutting geometry. Any ideas? I can email a part if you
    want a look-see.
    I'm using SW2006.
    Rocco, Apr 21, 2006
  2. Rocco

    Dave Nay Guest

    Yep...didn't work.

    What does work though is to place a new plane, parallel to your beveled
    surface, and offset by the length of your chamfer. Then use that plane
    to create a split line on the cylindrical surface. You can then do a
    45deg draft on the resulting surface.

    Let me know if you want me to send the model I just created.

    Dave Nay, Apr 21, 2006
  3. Rocco wrote:
    Any ideas?

    Since it's only a chamfer for a weld, could you just do it as a
    "Distance-Distance?" I know it doesn't make a consistent width chamfer
    all the way around, but how much trouble do you want to go to....

    Steve R.
    Steve Rauenbuehler, Apr 21, 2006
  4. Rocco

    Rocco Guest

    Excellent, hadn't thought of that...BUT what plane are you using for
    the neutral plane when you insert draft? If I use the angled plane I
    get correct draft at one end of the ellips and opposite draft at the
    other end.
    Rocco, Apr 21, 2006
  5. Rocco

    Rocco Guest

    "Since it's only a chamfer for a weld, could you just do it as a

    Nope, chamfer refuses to do it.
    Rocco, Apr 21, 2006
  6. Rocco

    Dave Nay Guest

    I used the new plane (the one also used to create the split line)
    Dave Nay, Apr 21, 2006
  7. I tried it before I posted to your message, and "Distance-Distance
    worked fine. Maybe what I tried is not what you're trying to do.

    Steve R.
    Steve Rauenbuehler, Apr 21, 2006
  8. Rocco

    Rocco Guest

    OK here is the behind the scenes update: many thanks to Dave, his
    method works like a charm on a round end, but the angle cut end won't
    play ball.
    Any other ideas?
    Rocco, Apr 21, 2006
  9. Rocco

    Wim Guest

    I tried it also and chamfer "angle distance" do not work, but chamfer
    "distance distance" do work (2006sp4.0).

    Wim, Apr 21, 2006
  10. Rocco

    Wim Guest

    Correction: it only works for me when both distances are the same!!

    Wim, Apr 21, 2006
  11. Rocco

    Rocco Guest

    okay, a lofted cut with 4 profile sketches (1 at each quadrant) with
    elliptical guide curves seems to work, but there must be an easier way!
    Rocco, Apr 21, 2006
  12. Rocco

    Ben Eadie Guest

    Here is my way

    -On the face of the cut sketch an offset the dist of the chamfer.
    -Offset a plane the distance of the chamfer and create a sketch using
    the 'intersection curve' of the outside of the tube
    -Loft a surface between the sketches
    -'Insert-Cut-With surface' and flip the cut to cut the desired section

    I tried to do a lofted cut but it does not seem to have a flip cut
    direction option...Bummer Dude! Although you could use lofted cut 'thin
    feature' and make a really thin cut if you don't have to be dead
    accurate and then remove the excess body, it takes a couple of steps away.

    Ben Eadie, Apr 21, 2006
  13. That worked! Simpler than four profiles, but still had to add an
    additional sketch to make a guide, as a simple surface loft and cut had
    a slight concavity to it without the guide....probably would not matter
    if simply making a weld chamfer.
    Steve Rauenbuehler, Apr 21, 2006
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