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PTC Creo Parametric 6.0 does not have volume sweep?But Why?

rohit_rajan
Amethyst

PTC Creo Parametric 6.0 does not have volume sweep?But Why?

PTC Creo Parametric 6.0 does not have volume sweep?But Why?

25 REPLIES 25

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

It DOESN'T?  Well, that's a total bummer if not.

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

well it does not show in any of their what's new videos.They have introduced an option to make helix curve directly from helical sweep.But no mention of Volume Sweep.

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

Yes, this is frustrating.  3D sweep was supposed to be delivered in Creo 4.0 F000, then pushed back to Creo 4.0 M020, then half delivered in Creo 5 with the 'Helical Volume Sweep'.  While Creo 6 does have some improvements to this helical feature, the full blown (non-helical) 3D Sweep is still not available.  Maybe Creo 7...

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

Not available even after 3 years, now its doubtful will they ever deliver it.I hope they do understand that its an important enhancement with all the mid-range CAD software's already having the complete capability.

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

It does have Volume Sweeps

https://support.ptc.com/help/creo/creo_pma/r6.0/usascii/#page/part_modeling%2Fpart_modeling%2Fpart_s...

 

More interesting is the fact they removed Creo Parametric 6.0 from the downloads section.  I got it last week but it's not showing for me now.

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

Volume Sweep is not the same as Volume Helical Sweep.

 

The download is still showing up for me:

Creo 6 Download.PNG

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

Odd I that I can't see 6.0 in the downloads section.  Is there a reference for exactly what is considered a "volume sweep"?  I understand where I was mistaken pointing out the helical type but am confused at to what a regular volume sweep is (say when compared to at standard sweep).

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

Imagine moving a square end mill through a piece of material in a straight line, but getting progressively deeper.  The tail end of the cutter will cause the slot to be slightly concave while the cutter is descending.  This can't be properly captured with a (planar) sweep today.

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

I understand now.  Thank you for the clarification.  I could approximate the form you're describing but it wouldn't be easy nor as accurate as have a true volume sweep.

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

Mmmmmm, maybe it CAN, at least in this instance now that I think about it.  I'm 99.999% positive it would work with a non-planar trajectory, although I'm sure there are limits, and might not work for the barrel cam we discussed.  Just did this quick to test a movement in X and plunge in Z (from left to right).  I measured it at a number of different points along the trajectory and that cutter edge follows the surface perfectly.  For fun!  Who needs a solid body sweep?  🙂

2019-03-28_ENDMILL_CUT_TEST-01_VIEW1.jpg

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

... but how many features did it take?

 

Here's another example where having the entire cutter geometry remove material would be helpful in achieving the desired end result:  https://community.ptc.com/t5/Part-Modeling/Uniform-cross-section-twist-feature/m-p/603734/highlight/...

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

'Afternoon Tom!

 

Not many, as it turns out.  It was my off Friday last week but I sent you the file Thursday, and I'll be in tomorrow (if we don't have a weather closure).

 

Yeah, there are sometimes when getting the geometry an actual cutter would make is easy....and sometimes when it's d@mn near impossible.

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

I have come across 3 or 4 different times I couldn't reasonably model what a end mill or ball end mill would create. It was always a mess when there was a direction change.

One of the times was just a cut for keeping a harness in place. I just got something close enough with that one, nobody cared about perfection.

The one other was a j-slot for a lock/unlock feature. Uggghhh, that one needed to be dimensionally accurate. I think me and another guy worked on it for a good long while and came up with some cluster of features that got reasonable geometry. That's the one that convinced me a 3D solid body sweep was a necessary feature. We used a surface pattern of the ball end mill along a path to verify we had something that was workable.


Steve Williams
Pro/E Version 15/16 (Circa 1995/1996)

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

Agreed.  Sometimes they can be a complete pain....for something that (mistakenly) looks so simple.  I agree, we NEED a 3D solid body cut, where we have infinite control of the actual path the axis takes, AND the variable speed/proportions at which both ends of the cutter axis move.  The actual shape of the removed material can vary greatly if the axis is meant to tilt at certain speeds, where it may not be normal to the "ribbon" that the axis path takes.

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

STEP file

 

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

I believe the example they show in the "Volume Helical Sweep" could be done already using the helical sweep cut or sweep cut command, with the section normal to trajectory.  The trajectory they show and resultant material removal should be exactly the same as what a ball endmill would give.  I'm not seeing anything different here....unless I'm totally missing something.

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

FYI, it looks like the full blown volume sweep (not just helical) will finally be in Creo Parametric 7.0.

 

https://www.ptc.com/en/support/article?source=subscription&n=CS313656

 

clipboard_image_0.png

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

Hmmm, I HOPE so, but I ain't holding my breath...

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

Good thing you didn't hold your breath.  Volume sweep has been tentatively planned for Creo Parametric 8.0

 

https://www.ptc.com/en/support/article?n=CS313656

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

LOL  Right Tom?  Man, I'd be purple and dead LONG before that.  H3ll, we're only on Creo 3...

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

Creo Parametric 8.0 should be dropping in March of 2021.  I certainly hope you don't die before then...  😉

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

StephenWilliams_0-1579124735390.png

 


Steve Williams
Pro/E Version 15/16 (Circa 1995/1996)

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

Now I think Elon Musk would have his Starship land on Mars much before PTC brings  Volume Sweep in PTC Creo Parametric.😎

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

very very bad news! very very very disappointed, volume sweep is not still available in Creo 8.0 yet, also not plan for Creo 9.0, why? PTC ? 

Re: PTC Creo Parametric 6.0 does not have volume sweep?But Why?

Winds of winter by GRR or Volume Sweep by Creo first?

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