I have to replace a box of the existing large unit assembly. After using replace component, all my mates were broken. Is there a way to avoid this from happening? Thank you (sorry I can't show the file)
Are you sure the replaced part have the same features which were used for mating with the old part
Nope. not sure. But the size of the box is the same. there might be a couple studs with different distance. :\
It doesn't matter if the size is the same as long as the features you used to mate them together are not the same, the mates will be broken after replacing the part. As Vladimir suggested, you can use the datum features such as original planes to avoid broken mates
Use the same datum planes instead of features/faces/etc. to mate components and everything will be fine.
Datum planes? Is there a video point me to your suggestion? Thank you
Datum planes = those 3 planes that are at the start of new part ->
Mate your components through those planes.
From time to time I have to replace part in my assembly because parts get discontinued from suppliers. You don't actually use Datum planes on every components in your assembly right? I use plane mate rarely. The thing scares me is when I turn on planes using mates, all planes shown in the assembly and I get lost.
IT's time to learn how to use a master sketch to build your models and say good bye to mates
Are you refer to Top down assembly?
As shown on Wojciech Paterski post: datum planes are planes which serves as a reference or base for the measurement of other quantities.
Datum planes are always fixed no matter what you are doing with 3d model.
You should have seen a window pop up while you were replacing the part/assy that shows you what was picked on the old part and you were then given a chance to select new faces on the new part so that it fits the same way.
Maybe it's just me, but I never get that to work right. I usually do as John suggests and just delete and recreate the mates.
The problem with that is if the component is used in an explode, it won't work. Take the time to learn, it isn't all that hard...
I usually let the mates be broken and then edit them after I have the new part in. I will often isolate the part I just brought in as the replacement since it is usually that side of the mate that is failing.
When that happens - you're not replacing with a similarly modeled component, faces or edges used in the original part are not the same etc..- Just re-mate...
Unfortunately, that isn't always true. In several instances, I've opened an assembly, created a copy of a part within the assembly, worked on the duplicate part, then replaced the original with the duplicate and had the mates fail. Usually, if I experiment with suppressing stuff, I can stumble upon the necessary combination of commands that causes the mates to fix themselves, but it is really bad behavior for no apparent reason.
SW assigns unique ID's for all elements (except datum planes) in a model and uses ID's for mates.
Users can't control internal ID's. This is the source of broken mates after replacement.
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