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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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Ah, another day, a new try. I think I got this to work, though it is not the best-best, it will do:
- Create a perpendicular large profile where you want the ramp to stop
- Create a super tiny/thin profile where you want the ramp to start
- Create a distinct arc between the two outside edges to act as a rail (a projection will not do, since the projection goes all the way around the circle and your arc can only exist between your two profiles)
- Loft between the two, using the outside edge as a rail
Then it works!...the "super thin" profile can then be filleted down to make it smooth.
Nick Kloski
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Hi,
Could you please share a screencast of this
here is my way of doing it
Best regards, Saeed
I tried something similar but it didn't follow a circular path at the ramp height. As you can see it bulges out in the middle of the path. Did your method work better and can you attach your version, my effort is attached.
Mark Hughes
Owner, Hughes Tooling
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Nice and simple, thanks for sharing
Best of luck my friend
Looks like I was typing at the same time as you. It looks like your version suffers with the same problem. You can get rid of the fillet blend if you make both rectangular profiles start below the top face of the disk.
Mark
Mark Hughes
Owner, Hughes Tooling
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Ah, good point about where to start the small profile!
Is that bulging a bug?
Also, for some reason, I am able to do the loft if the starting points form an acute angle, but not an obtuse one?
In the screenshot below, the starting points/rail are past 180 degrees from each other, and I get a "Cannot create Loft - Tangent to Profiles" error. If the angle is under 180 degrees it works but more than 180 degrees and it fails.
Nick Kloski
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It worked fine with me
Here's another idea. First build the ramp oversize then extrude-intersect to trim to the correct size.
Screencast and file's attached.
Mark
Mark Hughes
Owner, Hughes Tooling
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Yep, there was a very slight bulge.
I just created a sketch on the very bottom, offset the existing outer edge by a bit to create a ring, then extrude-cut that ring up to make it perfectly round.
Nick Kloski
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Can you attach your version? When I've tried there's a bulge halfway between the 2 profiles, it shows more if there's a big height difference between the 2.
You can see the bulge in the image below.
Mark
Mark Hughes
Owner, Hughes Tooling
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I'm not having any bulges when I try loft, here is a screencast of what I did
https://knowledge.autodesk.com/community/screencast/3563f5ac-fcdb-476f-9f4d-22bfeb15cf1f
file is attached
Saeed
I'm not having any bulges when I try loft, here is a screencast of what I did
https://knowledge.autodesk.com/community/screencast/3563f5ac-fcdb-476f-9f4d-22bfeb15cf1f
file is attached
Saeed
Hi @SaeedHamza Your overhang is not on the outside, it is on the inside of the ring. This is a bottom view of your file:
Nick Kloski
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lol it's just the camera 😛
this is how it looks like in the orthographic
and this is perspective
@SaeedHamza Thanks, I see you used a full circle as your path and that works a lot better.
@nkloski I think what you're seeing in the image above is because you have perspective view enabled, I have my camera set up as perspective with ortho faces.
Mark
Mark Hughes
Owner, Hughes Tooling
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Hi Nick,
going to offer another approach using a mix of Revolve and Loft. This gives you a bit better control at the bottom of the ramp.
hope this helps,
Jamie Gilchrist
Senior Principal Experience Designer
Jamie Gilchrist
Senior Principal Experience Designer
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