Project to Surface

Stuart_Tod

I've used the search function in the hope of finding an answer, but without any luck. So, can I project a 2-D sketch onto an underlying (curved) surface to provide a 3-D 'path'?

I'm trying to project sketch 5 in this open document onto the curved surface of Part 1 ( https://cad.onshape.com/documents/ef2e97eee4cf47578ba6a15d/w/d3c8a9e635194cf19de53fae )

And, if we can, when are we going to get a 'path' mate to go with the others? Please!

Stuart

nav

Hi @stuart_tod , I believe this feature is not yet available in OS, you can`t project sketches to curved surfaces (yet).

Nico

nav

Hi @stuart_tod , I believe this feature is not yet available in OS, you can`t project sketches to curved surfaces (yet).

Nico

Stuart_Tod

Nico,

Thanks - will have to hope this is on the OS wish list, and somewhere near the top (along with 'Path Mate' !

Stuart

andrew_troup

There are a number of workarounds, though. The only ones which spring immediately to mind are powerful, rather than pretty ...

One possibility:  use same sketches which created the "curved surface" you refer to in your post to make dummy target solid. Now extrude your "2-D sketch" as a surface, use that surface to split the dummy solid, use resulting edges as 3D curves, hide dummy solid (I said it wasn't pretty) ...

Stuart_Tod

andrew_troup said:

There are a number of workarounds, though. The only ones which spring immediately to mind are powerful, rather than pretty ...

One possibility:  use same sketches which created the "curved surface" you refer to in your post to make dummy target solid. Now extrude your "2-D sketch" as a surface, use that surface to split the dummy solid, use resulting edges as 3D curves, hide dummy solid (I said it wasn't pretty) ...

Andrew,
 
.......it's five o'clock on a Friday afternoon here....I think my head just exploded halfway through your workaround. That'll be something for me to try on Monday!

Thanks

Stuart

andrew_troup

Stuart

That's nothing, it's 0400 Saturday morning here (don't ask!)

I shared a model I was looking at for Raino, I hacked it to do a quick proof of concept (not as ugly in practice as my description made it sound)

 it's called "Loft testing - Raino" and the tab which demonstrates the workaround is called "Project Sketch to Solid" The last two features constitute the workaround.

nav

Hi @stuart_tod I was testing a little bit more not sure if it's the same method proposed by @andrew_troup as I did not have to split the part. I basically drew a cylinder, then in an offset plane I drew the curve I wanted to project, I used surface Extrusion Up to Next and in the intersection of both it creates the projected curve, in the intersection plane of the curve and the plane I drew the sketch to sweep (Used the pierced constraint). Below the sequence of images, hope it helps.

Nico

andrew_troup

I can't think of a single thing about my method I like as much as everything about @nav's

zachary_widbin

@nav, I lose you on the last two pictures. Would you mind sharing that document? Thanks.

mahir

@zachary_widbin, in pic 2 @nav created a circular profile sketch on a plane normal to the curve on the cylinder. In pic 3 he generated a swept solid using that circular profile and curved path. In pic 4 he deletes the construction surface.

famadorian

Stuart_Tod said:

andrew_troup said:

There are a number of workarounds, though. The only ones which spring immediately to mind are powerful, rather than pretty ...

One possibility:  use same sketches which created the "curved surface" you refer to in your post to make dummy target solid. Now extrude your "2-D sketch" as a surface, use that surface to split the dummy solid, use resulting edges as 3D curves, hide dummy solid (I said it wasn't pretty) ...

Andrew,
 
.......it's five o'clock on a Friday afternoon here....I think my head just exploded halfway through your workaround. That'll be something for me to try on Monday!

Thanks

Stuart

really funny that I'm reading this five o'clock on a friday afternoon (UTC+1), three years later;)

Anyways, projecting a spline onto a surface; has that gotten anywhere?

konstantin_shiriazdanov

famadorian said:

Anyways, projecting a spline onto a surface; has that gotten anywhere?

which type of projection you need? along direction, to the closest point, from a pole point, from a pole line?

tim_brotherhood

Any news on this being added to Onshape?