Showing results for 
Search instead for 
Did you mean: 

Synchronous and Associativity


After two years, I'm still just a student of Solid Edge. I'm very often amazed at the power that's in there. Of course there's no way to learn something like just diving in and doing it, which is exactly what I've been doing recently. I've had help, of course. I don't think I could have done any of this without Art Patrick and Dan Vinson.


As similar as this software seems at first glance to other Solid modelers out there, the details of how it gets things done are entirely different. This often means that some of the real power in there is stuff that old Edgers take for granted, but it doesn't seem to see the light of day outside of that group.


On top of that is the fact that Synchronous Technology is still adding functionality, and the user community really hasn't had time to develop the canon of wisdom that we have for history-based modeling.


With that in mind, I've got a couple of things I'd like to share here. Please forgive me if these are not completely novel ideas, but I ran into both of these concepts while working on modeling projects, and they seemed useful enough to warrant passing on in case there were others who hadn't seen them or hadn't seen the value before.


Synchronous Sketches and Ordered Features


The first idea is to use Synchronous sketches in conjunction with ordered features. In particular I've used this with surface features. Here I've got a little video of using synchronous spline curves to drive a Bluesurf, with the splines being edited live, and the bluesurf morphing as I drag the points of the spline.


Inter-Part Copy


The second idea is that there is actually one feature in Solid Edge that combines Synchronous Technology and the idea of associativity. Generally, you would use Synchronous specifically to avoid the links between files that come along with associativity, but in the case of the Inter-Part Copy, when inserted as a feature into a Synchronous part, it will update.


This is handy, and means that you don't have to create a part in Ordered mode if it starts with an associative feature. In my case, I just copied a portion of a surface from another part as the basis for a new synchronous part. Now if my original part changes, my new part will also update.


Blurring the lines between complete associativity and link-free modeling allows you to manage your model better, and only take the hit of performance latency when you really need to. In other words - associativity is powerful, but it comes at a cost. This feature allows you to manage when you are willing to pay the (speed/performance) price to get the added functionality.


Ordered Mirrored Part Copy of Synchronous Parts


The model I've been working on recently has a lot of symmetry, so there are plenty of mirrored parts. I'm working in Synchronous where I can, so at first I was making Synchronous mirrored parts. Until I made my first change.




So in this situation, when the Synchronous part changes, it will update the Ordered part.


The more you use Solid Edge, you see that the innovation here is not Synchronous instead of Ordered, but Synchronous complementing Ordered. Ordered modeling still has value, but if the last 30 years have taught us anything, it is that Ordered modeling has many weaknesses. Synchronous gives you tools to use that don't have those weaknesses.


Don't sell short associativity in Sync.  There is still the "Create Inter-part Relationships" command at the assembly.


This looks for relational faces.  Not faces have relationships between them, but faces that could.  Mates and Axial aligns specfically...  Then this creates the inter-part copy of one face into the other part and also creates the sync persisted relationship to the inter-part copy face to maintain associativity between the 2 parts. 


Helpful so that you don't have to worry about selecting a part and all the "relational" faces when you want to move the part.  With the inter-part relationships created, you simply move the part and these "relational" faces then update auto-magically via the inter-part relationships.


Great for linking a purchased parts bolt hole pattern to a manufacture part.  The purchased part is the driving part and the manufacture part is Driven via inter-part relationhips to the purchased driving part.




I wish I had done that with some doors recently. I moved the latch and the strike didn't follow.




I would really like to see some examples of Sync and Associativity using imported parts from other systems.

I feel there are still a lot of tools that get demo'ed to customers that are great examples of what can be done with legacy solid parts and legacy 2D-3D functionality. If people had more examples of this on YouTube they could see the true power behind these tools. Examples like this would make the competitors look like the kid on the corner that the bus passes by..staring as the bus goes around the corner with his jaw dropped.mega_jaw_drop_colored__by_tiasworld-d5rftde.jpg


Ryan, yeah, good point. That's something I should be able to work into my list of stuff to do. To make sure I understand you, to basically use imported geometry as the driving side of an in-context relationship.


Great idea. Thanks.


I would like to see the "repurposing" of legacy data. Whether that is 2D to 3D functions or 3D to 3D parametric/ST solids.

  1. Show how easy it is to use 2D ACAD files to quickly generate 3D models and assemblies.
  2. Show how easy it is to take an imported solid from another system and apply the real design intent parameters. The rest can be driven by converting to sheet metal or using ST functions.

Those are the things that will make the competitors scramble back under their rock and those potential viewing customers want to know more.


I deal with a lot of sheet metal parts- mainly straight break with some custom punches. If I am able to bring designs from my current systems into a newer system like SE (that in my opinion has a future) and I am able to make changes to the design quicker than I can in my legacy system then I have a legitimate business reason to present. If I can have an assy and stretch mulitple components at one time..I'd be thrilled. So would all those people that have to build test equipment and tublar frames of any sort!