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Hi all!
There has to has to has to be a more elegant way to create a curved ramp than to futz with the coil tool creation, moving the coil, combine/cut. etc. Anyone have any ideas to create a simple linear ramp around a section of a circle (as in the picture and fusion file below)?
I tried sweep with guides, but that did not work....lofting a small rectangular profile at the minimum edge with rails but that did not work either...ideas? The coil tool has a lot of work to get it to work, and I suspect with all the manual "move" commands to get the coil in the right place that the parametrics will get off at that part of the design.
Nick Kloski
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That's a great technique @JamieGilchrist! I was re-creating a complex object, where the ramp was just part of it, and I was tackling the object one piece at a time...central ring, then ramp, then other pieces, etc. your technique taught me an important thing: to look at the design more holistically, and see what parts might need to be addressed first, before other pieces.
If that "loft with rails" command worked without a bulge, then that would have solved it....unless I wanted a different ramp tangency, in which your method really is the best way to do it.
Thanks very much for the tip! (that applies to everyone, as well! 🙂
Nick Kloski
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I am not sure where there's supposed to be a bulge in @SaeedHamzas method. The draft analysis shows no deviation even with +- .01 deg. when I try it.
The overbuilding in @JamieGilchrist's solution is necessary because it uses a tangent start condition, otherwise the loft would be fine without overbuilding.
@TrippyLighting, @SaeedHamza method works fine. The method I tried using an arc the same length as the ramp causes a bulge but using the whole circle doesn't.
Mark
Mark Hughes
Owner, Hughes Tooling
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I took another look at the bulge problem and it's actually the type of rail that makes the difference, centre line rail doesn't bulge.
Mark
Mark Hughes
Owner, Hughes Tooling
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Hello,
Thanks for the tuto.
I have an additional issue : how to do a ramp with a non linear declinaison?
Because I need a had drop at beginin, and more smooth at the end.
I've tryed to fix it with rail.
But impossible to have 4 rails correct.
The best result I can have:
As you can see, the back line is not fallowing the declinaison required.
I've done it like that
1 - I furst create a block. it's the ramp but without declinaison.
This to project the lines of declinaison I need (one on the front, one at the back).
2 - I create the 2 profiles to create a loft
3 - I try to create the loft. But the back line is impossible to use. Due to the projection that don't touch each corner of the peace.
Do you have a solution?
Patch > Extrude the inside wall of the ramp, (higher - oversize)
Use Plane on two lines both edge lines from the wall,
Sketch Spline profile of ramp.(blue line),
3d Sketch - Project > Intersect Curve makes the purple 3d curve for Split body, is later top edge of the wall
Split Body (Wall) with Cutter, Remove top of the wall portion.
Thicken Wall.
Reading the timeline and browser together should get you going,
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