topic Re: Guiding a loft along a curved, angled surface in Fusion Design, Validate & Document Forum

Guiding a loft along a curved, angled surface

Anonymous — Mon, 09 Oct 2017 03:15:21 GMT

Hello! I am relatively new to Fusion 360 but have been enjoying using it so far. My first couple of designs that I have done have gone smoothly but I am really struggling with finding a good way to do my current project: I am trying to make improvements on a tool used for removing corn kernels. The current model is essentially a funnel shape (top is a wider opening then the bottom). Here is the model I made for that: https://imgur.com/1z5VVSe. Now I am trying to change it slightly by angling the internal ridges. I have attempted to do this by generating an angled coil that follows the path of the inner cone but when I try to rearrange the "loft points" fusion 360 crashes on me. Is there a better way to approach this? Additionally, is there a way to delete the auto-generated loft points? On more than one occasion it has generated superfluous ones that I would like to get rid of. Thank you so much! Attached is the file and the screencast.

Re: Guiding a loft along a curved, angled surface

davebYYPCU — Mon, 09 Oct 2017 05:05:23 GMT

The Loft in Modelling probably needs more rails, to direct the shape,

but I have it made with 2 patch centre line Lofts for the long sides,

and 3 patches, for the back, and top / bottom caps, stitched OK.

Might help,

Re: Guiding a loft along a curved, angled surface

laughingcreek — Mon, 09 Oct 2017 05:06:09 GMT

I think what your doing should work. But fussions loft is finiky, and seems to fail a lot when it shouldn't.

strictly as a work around, the loft can be done one surface at a time in the patch environment, like this-

Re: Guiding a loft along a curved, angled surface

laughingcreek — Mon, 09 Oct 2017 05:16:27 GMT

or use a sweep. sweep is probably better, the cross section is maintained.-

Re: Guiding a loft along a curved, angled surface

Anonymous — Mon, 09 Oct 2017 22:48:48 GMT

That looks like a great solution! I will monkey around with it some more when I get a chance. Really appreciate it! Is patch then the only way to control the attachment points on the loft?

Re: Guiding a loft along a curved, angled surface

davebYYPCU — Mon, 09 Oct 2017 23:13:17 GMT

Well, Patch works with smaller segments, that are then stitched together,

Solid loft in your case, with just the centreline, allowed Fusion to make best guesses,

( I did get the mapping points in the right place, but was easier and more productive to Patch Loft the long edges)

if you / I / we had made a rail for each corner, you would not have to ask, it would have been spot on in the first place.

Sweep has no mapping points, so same thing, doesn't allow Fusion to best guess.

Might help....