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rohit_rajan15-Moonstone
15-Moonstone
March 26, 2019
Question

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

  • March 26, 2019
  • 8 replies
  • 19573 views

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

8 replies

Patriot_1776
Patriot_177622-Sapphire II
22-Sapphire II
March 26, 2019

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

R
rohit_rajan15-MoonstoneAuthor
15-Moonstone
March 26, 2019

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.

T
23-Emerald IV
TomU23-Emerald IV
23-Emerald IV
March 26, 2019

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...

R
rohit_rajan15-MoonstoneAuthor
15-Moonstone
March 26, 2019

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.

    B
    BrianSnyder11-Garnet
    11-Garnet
    March 26, 2019

    It does have Volume Sweeps

    https://support.ptc.com/help/creo/creo_pma/r6.0/usascii/#page/part_modeling%2Fpart_modeling%2Fpart_seven_sub%2FAbout_Volume_Helical_Sweeps.html%23

     

    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.

    T
    23-Emerald IV
    TomU23-Emerald IV
    23-Emerald IV
    March 26, 2019

    Volume Sweep is not the same as Volume Helical Sweep.

     

    The download is still showing up for me:

    Creo 6 Download.PNG

      B
      BrianSnyder11-Garnet
      11-Garnet
      March 26, 2019

      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).

      T
      23-Emerald IV
      TomU23-Emerald IV
      23-Emerald IV
      September 26, 2019

      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

      Patriot_1776
      Patriot_177622-Sapphire II
      22-Sapphire II
      September 26, 2019

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

      T
      23-Emerald IV
      TomU23-Emerald IV
      23-Emerald IV
      January 15, 2020

      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

        M
        MR_100648354-Participant
        4-Participant
        November 16, 2021

        Does anyone know if this is yet available? It's **bleep** well frustrating that Creo doesn't have this simple function. Every other CAD out there has it, and Creo is dragging it's feet. I mean really. Inventor sucks and it even has this function.

        T
        23-Emerald IV
        TomU23-Emerald IV
        23-Emerald IV
        November 17, 2021

        It is still not available.  3D sweep was supposed to be delivered in Creo 4.0 F000, pushed back to Creo 4.0 M020, then half delivered in Creo 5 with the 'Helical Volume Sweep'.  CS313656 used to say that volume sweep would be delivered in Creo 8.0, but after that release came and went the article was changed to say, "A change in functionality is being considered for a future release by Product Management but no timeline can be committed to at this time."

        Patriot_1776
        Patriot_177622-Sapphire II
        22-Sapphire II
        November 17, 2021

        I'm wondering if it's not an issue with the basic Creo functionality (kernel?).  I mean, they STILL haven't fixed the issue of Creo cutting cylinders and circles in half!  That issue, which has caused an endless number of geometry failures for me in the past, STILL hasn't been fixed.  This has been an issue since at least the V15 I started on back in early '96.

         

        Then there's the "chain" issue that I worked on the other day.  Dunno if the Solidquirks solution is CORRECT, but they have one that's a lot easier for the user.  Oh, and they also have a solid volume sweep.

        T
        23-Emerald IV
        TomU23-Emerald IV
        23-Emerald IV
        November 17, 2021

        I don't believe there is any plan to stop splitting circular curves and cylindrical surfaces in half.  From CS19238:

         

        • This is how cylindrical surface are created in Pro/ENGINEER & Creo Parametric
          • Creo Parametric does not create full periodic surfaces; it always splits them in two (i.e. for cylinders, spheres, cones, torii, surfaces of revolution, etc)

        Also from that same article:

         

        • If you find a workflow in Creo that is impacted by this behavior, please open a case with technical support
        Patriot_1776
        Patriot_177622-Sapphire II
        22-Sapphire II
        November 18, 2021

        LOL  Yeah, open a case....so they can tell you that your geometry failure is "core functionality".  That was a huge mistake made at the beginning, I guess I was foolish to think they'd actually fix it...my bad.

         

        From the article:  "This behavior should not impact any workflows within Creo"  🤣🤣🤣   Ahhh, we wouldn't complain about it if it DIDN'T FUBAR "workflow".  I had a perfect example early in my Pro/E career where I saw what was happening, rebuilt the model so that it was 45deg from where I started, and it worked fine.  The feature failed every time it tried to cross that split boundary.  Yeah, "should not impact..."  LOL

        M
        MR_100648354-Participant
        4-Participant
        December 6, 2021

        This is a reply to all those who are beyond frustrated that Creo does not have a "solid sweep" function like every OTHER CAD out there does. I share your pain. I can't even ever get the volume helical sweep to do what I want. It never generates when i try to do 4th axis end mill cuts. Very frustrating!

         

        I have, however found a workaround for the volume/solid sweeps, as I had to model this part for a customer, and couldn't take no for an answer. What's frustrating is that it quite literally takes 15 steps to do what could be done in 3 steps in any other CAD. The basic steps are as follows (I tried attaching the .prt file, but ptc.com is not letting me attach it. IF YOU WANT IT, SEND ME A MESSAGE, AND I'LL SEND IT TO YOU VIA EMAIL).

         

        • I revolved the end mill cuts on each end
        • Then I made surface copies of the exterior of the end mill profile (may not be necessary. You might be able to use the revolved surfaces)
        • I created points on the centerline of the end mill, where the corner radius starts (at the full diameter of end mill), and I sketched two points where the corner radius was tangent to the “sweep profile” (also on the end mill center line plane).
        • I created a plane between the two points on each end mill, and made it normal to the direction of the sweep trajectory.
        • Then I did a surface intersection feature of the end mill surfaces I copied earlier and the plane I created on the left end mill cut. This creates a curve through that plane.
        • Then, using a midpoint plane, I projected that intersected curve onto it, and extruded it to the two intersection planes on each end mill.
        • Then I cleaned the top part up with an extrude between two planes tangent to each side of the end mills.

        This will get the concaved floor correctly. I asked a PTC vendor for help on this and they recommended hand sketching a spline that matches the angled end mill profile, but no matter how long you spend tweaking it, it would never be perfect. This is mathematically perfect, since creo has generated it via intersections.

        I reckon the same thing could be done along a curved sweep trajectory, but rather than extrude the intersected curve, you would need to sweep that curve, on the angle of the intersection plane (not normal to the trajectory curve). Likewise, you would need to 'clean up' the top portion of the end mill cut with a sweep as well, but it should work.

         

        Hope this helps anyone else who has been as frustrated as I was!

          S
          23-Emerald III
          StephenW23-Emerald III
          23-Emerald III
          December 6, 2021

          @MR_10064835 

          I think if you zip the file, you will be able to attach the file. 

          Otherwise for years and years, community members will message or post  requests for you to send the file.

            M
            MR_100648354-Participant
            4-Participant
            December 8, 2021
            Thats a good point. Didn't think about zipping it. I will try that tonight.
            U
            udyna1-Visitor
            1-Visitor
            January 5, 2022

            PTC promised to add a new volume sweep tool when Creo 4.0 was released in Dec 2016.

            I was very surprised that this tool is still not available in Creo 8.0.

            I heard that the upcoming Creo 9.0 also does not have this tool.

            What happened to PTC?

            Is it technically a big problem that cannot be overcome?

              T
              23-Emerald IV
              TomU23-Emerald IV
              23-Emerald IV
              January 5, 2022

              If Solidworks was capable of delivering this back in 2012, then I have to believe PTC's software developers are still capable of accomplishing the same thing.  I think the delay is simply one of priority.  Someone inside PTC has apparently decided that other things are more important, so adding a (non-helical) volume sweep feature continues to remain unfinished.

                B
                23-Emerald III
                BenLoosli23-Emerald III
                23-Emerald III
                January 5, 2022

                It maybe something fundamental in the Granite kernel that cannot handle the geometry creation that a volume sweep creates. Solidworks and NX both use the Parasolid kernel and its architecture may be more robust in this area. CATIA uses its own kernel, but it too may have the needed design characteristics to handle the helical volume sweep. Not sure about Inventor and the ASICS kernel.

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