topic Re: Automatic Constraints in 3D Part & Assembly Design

Automatic Constraints

ptc-5122510 — Sat, 12 Dec 2020 18:13:52 GMT

I've been having an issue since installing Creo 2.0 where I'm trying to create an assembly and pull in parts, but they're not constraining correctly. I was watching a Creo Primer video, and the speaker said that Creo is smart and will automatically learn the constraints

Re: Automatic Constraints

TomD.inPDX — Mon, 24 Jun 2013 21:51:41 GMT

I think those videos are half educational and the other half propaganda. There is such a thing as Component Interfaces, but I don't know anything about "automatic". I don't use these so I am not sure what the video might be referring to.

Re: Automatic Constraints

ptc-5122510 — Tue, 25 Jun 2013 13:59:51 GMT

You wouldn't know anything about creating threads, would you?

Re: Automatic Constraints

ptc-5008082 — Tue, 25 Jun 2013 16:18:40 GMT

is your config option 'create_temp_interfaces' set to yes?

Re: Automatic Constraints

TomD.inPDX — Tue, 25 Jun 2013 17:09:59 GMT

Sure, care to start a new thread?

Re: Automatic Constraints

TomD.inPDX — Tue, 25 Jun 2013 17:12:19 GMT

Nice find, Charlotte. Why would that be "no" by default?

Re: Automatic Constraints

vzak — Tue, 25 Jun 2013 22:54:34 GMT

Antonius, would you expect this to be a default ? This will result user in entering with-interface type placement by default if there is at least one similar compoinent already assembled somewhere, not having explicit interface created anywhere ... on the other hand this is clear automation.

Re: Automatic Constraints

TomD.inPDX — Wed, 26 Jun 2013 00:36:01 GMT

Oooohhhh... Hmmmm... that always makes it a touch choice as to whether I want to remember an option or add it to the config.pro file.

Ideally, the UI would be friendly about giving you the choice. Either with prompts or a checkbox dialog like "would you like to re-use these constraints in this session?".

Re: Automatic Constraints

ptc-5122510 — Wed, 26 Jun 2013 02:29:06 GMT

How do I check this?

Re: Automatic Constraints

ptc-5122510 — Wed, 26 Jun 2013 02:29:27 GMT

No pun intended?

Re: Automatic Constraints

TomD.inPDX — Wed, 26 Jun 2013 02:40:03 GMT

D'OH! I missed that one

Re: Automatic Constraints

ptc-5122510 — Wed, 26 Jun 2013 02:47:37 GMT

I created the thread. It's called 'Creating threads?'

Re: Automatic Constraints

ptc-5008082 — Wed, 26 Jun 2013 07:08:35 GMT

File > Options > Configuration Editor

Re: Automatic Constraints

ptc-4314565 — Wed, 26 Jun 2013 16:46:17 GMT

I'm having this issue as well. Just switched to Creo 2.0 from WF5, and immediately noticed that I have to go and reconstrain a repeated part every single time I place it. In WF5, the references window would retain the part features that were selected before, and you would only have to select the corresponding features of the assembly to constrain to. Needless to say, my productivity in asm mode has gone down as a result. Hoping soemone comes up with the answer, and thanks to Christopher West for starting the thread!

Re: Automatic Constraints

TomD.inPDX — Wed, 26 Jun 2013 17:08:52 GMT

This brings up the question:

When you have create-temp_interfaces set to yes, do the interface features need to be written back the sub-component or is this always maintained within the using assembly?

Aleksey, are you referring to patterned components tied to a reference pattern when you say "repeated"?

Re: Automatic Constraints

ptc-4314565 — Wed, 26 Jun 2013 18:28:19 GMT

Antonius,

If I'm interpereting "patterned components tied to a reference pattern" correctly, then no. For example, when I constrain a fastener to a patterned hole, I can press the pattern button and Creo properly places that fastener into every hole of the pattern.

What I'm talking about is the situation where I may need to put a given fastener into a few different holes on the assembly, some of which may be in independent patterns on different parts of the assembly and some of which may just be individual holes.

What I'm missing from WF5 is the fact that I used to be able to take my fastener, mate its axis to the axis of the hole it's going into and mate the underside of its head to the surface of the part that the hole is in. Then, every time I needed to place the same fastener in a different hole that did not belong to the pattern of the original hole, all I needed to do was click on the axis of the new hole and the corresponding surface and the fastener would be placed correctly.

So really, my issue is that when I try to constrain multiple instances of a given component to a few non-patterned features of the assembly, Creo does not remember the features of that component that were used to constrain it to the assembly the first time. As such, I find myself having to reselect the features of the component that I want to constrain to the assembly every single time I place a new instance of it, which is what I thought the OP's issue was. I figured there must be some default setting that has changed between the two releases, and the fix would be to simply enable it.

Hope that made some sense, and that I interpereted your reply correctly. Eagerly awaiting your reply!

Re: Automatic Constraints

TomD.inPDX — Wed, 26 Jun 2013 18:38:22 GMT

I see. Yes, this very much sounds like the setting of this discussion. Maybe in WF5, it was set to yes by default and in Creo 2, it was set to no. I haven't done this so I cannot comment on the how the setting is performing.

Re: Automatic Constraints

ptc-4314565 — Wed, 26 Jun 2013 18:46:19 GMT

Excellent, then that is what I will try. I'll give it a shot when I retrieve my work laptop, and report back whether it works out for me or not. Thanks for the confirmation!

Re: Automatic Constraints

ptc-4314565 — Wed, 26 Jun 2013 21:03:05 GMT

Yep, fixed! Thanks, everyone!

Re: Automatic Constraints

TomD.inPDX — Thu, 27 Jun 2013 07:27:44 GMT

Gotta love this forum... learn something new every day!