Trying to create a sweep that changes shape as it follows the path

anders

I am trying to model a wing but when i try to make the profile with a sweep it leaves flat spaces down the wing:
https://cad.onshape.com/documents/84af1ad065c643e68dde8958/w/dfe821d4f0d34ae59f83b4ee/e/ed4e94c7f875463d96654237

I want my curves end point to stretch to the middle line while still keeping the main curvature.

T_Oda

Is this your want?

https://cad.onshape.com/documents/abc237f74dfa4bfb8eff9724/w/8da2c7ba7ed44f2ca1907ea8

Is this airplane ?
It has beautiful curve line, so I want to see whole assemble shape.

I hope my public document help you to make curved surface.

https://cad.onshape.com/documents/0cbfa96e16ca4ec7bc127c3e/w/6af8703ba8844c2b941e00a0

andrew_troup

@anders

What you are wanting is a perfectly valid thing to want, and it's not yet available in Onshape.
It's called "sweep with guide curves", and enables the sweep profile to change dimensionally (but not in 'nature') along the path.

At present, in Onshape, "Sweep" is really no more than Extrude, or a succession of extrudes, along a path which (unlike the Extrude case) does not have to be straight and normal to the sketch.

"Loft", however, as @T_Oda has nicely demonstrated, *will* achieve what you want to do, with (in your case) only about the same amount of work, and it tends to be very useful in aircraft and airframe work.

T_Oda

Is this your want?

https://cad.onshape.com/documents/abc237f74dfa4bfb8eff9724/w/8da2c7ba7ed44f2ca1907ea8

Is this airplane ?
It has beautiful curve line, so I want to see whole assemble shape.

I hope my public document help you to make curved surface.

https://cad.onshape.com/documents/0cbfa96e16ca4ec7bc127c3e/w/6af8703ba8844c2b941e00a0

anders

Thank you very much it was what i wanted to do. I went ahead and tried your method for myself and it thaught me alot about onshape
It is indeed an aircraft, i am trying to model a skeleton of a plane so that i can print the drawings and create a radiocontroller version of it. I haven't come that far yet though only have the one wing

andrew_troup

@anders

What you are wanting is a perfectly valid thing to want, and it's not yet available in Onshape.
It's called "sweep with guide curves", and enables the sweep profile to change dimensionally (but not in 'nature') along the path.

At present, in Onshape, "Sweep" is really no more than Extrude, or a succession of extrudes, along a path which (unlike the Extrude case) does not have to be straight and normal to the sketch.

"Loft", however, as @T_Oda has nicely demonstrated, *will* achieve what you want to do, with (in your case) only about the same amount of work, and it tends to be very useful in aircraft and airframe work.

brucebartlett

@andrew_troup guide curves can be used with the loft. I have been surprised by what can be achieved with this command. Checkout the body on this, a point to point loft with 1 elliptical profile and 2 guide curves.  

edit* this different to the sweep as mentioned above, sweep does not have guide curves, loft however does have guide curves and may be used in some scenarios to achieve the desired result that sweep will not.d

andrew_troup

@brucebartlett

I should perhaps have been more clear in the latter stages of my post:
I guess I thought it was self-evident that lofts (unlike sweeps) DO permit guide curves.

Nice model, BTW!

brucebartlett

@andrew_troup I think I just confused loft and sweep. I will edit my post.

T_Oda

Hi @anders,  I am happy that it is help of you.

Speaking of 'Sweep', it is simple command and make a simple surface.
In Part 'bolt M10' of 'bolt and nut M10'

  https://cad.onshape.com/documents/7d889a653d1c4b3883cb97e8/w/65003e9ea8434b75a7a36ecb

I use 'Sweep1' using 'Sketch 5' and 'Helix 1' and get a spiral solid.
The face outside of screw is merged with cylinder surface which has the same external diameter to be one face.
When I do the same thing in SolidWorks, they remain different faces, not to be one face.