The latest info from technical support team, the plan of adding 3D sweep into Creo 4.0 M020 is cancelled, this functionality will be added into Creo 5.0 next year. What a pity for PTC.
3D sweep is a very tough problem to solve in a way that produces accurate geometry. There's a version of it for Solidworks that produces a really ugly result. It's not bad at first glance, but looking closer and it looks like junk.
Solid Edge ST9 has it,NX 11 has it...they have solved it.
As far as solidworks is concerned we are using ...and it works fine !
I've looked and the examples are simple, only working on revolved cutting bodies. ST9 forces cuts to be done with calculated revolutes, aka 'spun bodies'; says so right in the menu pick. Solid Edge ST9 - Solid Sweep - YouTube
Solidworks cautions about making such cuts with any revolute that is not completely convex, though a user showed that one can escape that test by redefining the cutter body after the path is selected but before the cut is complete.
As far as I can tell all three products are Parasolid based and it looks it, so it's not three companies that have figured this out, only one. They depend on being able to make independent bodies within a single part, which Creo doesn't support. This suggests they won't be able to do this trick in the context of an assembly and therefore no chance at all of controlling the swept solid using a mechanism, which would be very handy for back-driving cam creation based on required output.
If PTC does implement it in the assembly mode it would be nice to allow the addition of material to a component part.
inventor has a plugin that does this as well https://www.youtube.com/watch?v=Tn5OMml4eDg&t=602s
but the main point is PTC has failed to deliver on a promise...
so don't make excuses for them. maybe it's good that they don't release something that is "sub-optimal", but maybe sub-optimal works just fine for 99% of the cases...
I suppose I just don't get it - isn't this the kind of thing that the cnc machining module has already solved? Or are their nc simulations just gross approximations? In which case, just how are people actually using this to produce real parts?
CNC machining simulation is usually for revolute bodies that are convex. I expect the CNC simulation results to be faceted rather than analytical surfaces.
The Inventor add-in only does feed screws and is not a general purpose tool. Here's a different plug-in result showing the chopped surface it produces SolidSweep Feed Srcew - YouTube
I'm still disappointed that Microsoft failed to deliver their Cairo WinFS file system; companies make projections and sometimes determine that things are more difficult than originally estimated.
Are you already using some technique to generate such surfaces? For the simple cases it seems not too difficult to generate the same results with a couple more steps.
PTC stated that convex-body solid sweeps would be included in Creo 4.0. And now - it's pushed to the next major release. And so seeing what other CAD software delivered, I am disappointed (again).