Thanks for the Solid Edge support in this forum. I am trying to cut out a guiding rail in a cylinder and cannot get the right cut or always get an error. The cut out is meant to be a guiding rail for a pen mechanic.
This picture might illustrate further what I want to do:
I created the rail with by wrapping a sketch onto the cylinder and doing normal cut-out. The problem is that the width of the cut-out increases along the radius of the cylinder while the pin does not (and should not).
So, how can I get a good rail into the cylinder?
So far I tried:
- Normal cut on the wrapped sketch (image above), but rail width increases along cylinder radius
- Sweep cut on the wrapped sketch, but I get a non-tangent error
- Loft cut along the wrapped sketch, but getting similar errors
Would be great to find a solution for this and sorry, if this is really a beginner question.
Solved! Go to Solution.
I don't have an answer for you right away, but the first thing I'd like to know is how you're going to produce this part. How you model the slot will depend on if you're going to machine or cast this part. If you're going to machine it, I would try to set up the cut the way a CNC would cut it.
In other software, the way I would do it would be to have a straight line going down the axis of the part, and a curve on the surface of the part, then create a rectangle with a centerline where one end of the centerline follows the line on the axis, and the other end of the centerline follows the curve on the surface. This keeps the "cutter" (rectangle" perpendicular to the surface and perpendicular to the path at the same time.
The only problem would be the area on the upper left of the image.
There are some other ways to do this. Etch the shape onto a cylindrical surface, then thicken the surface, and use ruled surfaces to make the sides of the cut always parallel.
I'm gonna play with this to see if I can come up with something that works in Edge. Cool part.
They are personal screen recordings via "Screencast".....but maybe you won't need them...
The crux of it seems to be,...draw your complete cutout path [ceterline, with "Symmetric Offset"] as a sketch to wrap, wrap the sketch, then use a "Normal - Cutout"
EDIT: upon trying this process myself....it appears NOT to solve your issue, of a tappering cut thickness.
No it's probably not much help....was done to a shallow depth, and the path was not as convoluted as yours.
I'll give it some more thought when I finish work in a couple of hours....no doubt someone will come up with the solution, way before I get to back it.