topic Re: Strange behaviour when moving component. in Fusion Support Forum

Strange behaviour when moving component.

DutchPainter — Sun, 08 Sep 2019 18:57:46 GMT

Hi,

I have some strange behaviour in my model. When I move the cover in the model up, the left (and back) side change position.

When I use the timeline to check of I used the wrong parameter to duplicate the left(or front) side component, the rendering looks ok. But as soon as I hit the OK button the sides move to the wrong position. Any idea what might cause this?

Thank you,

Yolanda

Re: Strange behaviour when moving component.

davebYYPCU — Sun, 08 Sep 2019 20:47:06 GMT

There are too many possibles, we will need to see how the model is made.

File > Export and attach to a reply.

Of course, don’t move it - would not be a proper answer.

Re: Strange behaviour when moving component.

DutchPainter — Sat, 14 Sep 2019 09:34:27 GMT

Hi, thanks for your reaction. I am new to Fusion, so I wasn't aware of the fact I could actually download and attach the model to the question. But here it is.

I probably made a lot of mistakes in the model, It is one of my first models, so don't judge me on that ;).

I hope you can help me with this question.

Yolanda

Re: Strange behaviour when moving component.

davebYYPCU — Sat, 14 Sep 2019 10:52:21 GMT

I have started on a travelling holiday, I have Internet, but no desktop, so will see if others chime in.

Re: Strange behaviour when moving component.

DutchPainter — Sat, 14 Sep 2019 11:22:20 GMT

Thank you ,

not in any hurry so enjoy your holidays

Yolanda

Re: Strange behaviour when moving component.

g-andresen — Sat, 14 Sep 2019 11:38:37 GMT

Hi Yolanda,

I corrected the wrong position of LR 2 by a rigid joint to BF 1.

change position

günther

Re: Strange behaviour when moving component.

DutchPainter — Sat, 14 Sep 2019 12:12:29 GMT

Hi Gunther,

Thank you very much, that is the solution.

Very happy with it.

Yolanda

Re: Strange behaviour when moving component.

HughesTooling — Sat, 14 Sep 2019 12:23:54 GMT

How did you make the move? In the screencast I undo your move then use the move tool set to components, select the cover and it moves fine. You will be better off creating a rigid group for the box and lid then they'll move as subassemblies. Then just add 2 joint to position. You might find the help on assemblies helpful. One final note, you should avoid Capture Positions as they are not efficient and hit overall performance and for most assemblies not needed.

At first look you've done quite a good job following Rule #1 but I'd usually create a component then all it features then create the next rather than create a lot of components then add features.

Here's a timeline from one of my designs, note I create a component then all features then create the next. Fusions seems a lot more stable and better performing like this.

Mark

Re: Strange behaviour when moving component.

TrippyLighting — Sat, 14 Sep 2019 12:45:46 GMT

@DutchPainter wrote:

I probably made a lot of mistakes in the model, It is one of my first models, so don't judge me on that ;).

Too late! LOL 😉

But honestly, there's nothing wrong with you design. Pretty solid effort for a first design!

Due to the design being symmetric in the X and Y axis it would have been easier to design it with the main origin in the center.

You basically mix a top down design workflow with a bottom up design workflow.

Top down means that you design the individual components in their final location. And you do that with each of the Box and Cover assembly.

However each of these assemblies you start at the main origin of the design, meaning that they have to be assembled into he correct place after they re created. That's more of a bottom up approach.

At the moment in your design, while the individual assemblies appear to be assembled, they really aren't. You can drag each component around in the viewport. Then you'll get two additional icons in the menu bar. If that happens, click the revert icon. You don not want to store that location in this case.

The first thing to do is to ground one assembly meaning it is fixed in it's location.

Grounding the assembly means that the the assembly is grounded in essence it's origin is locked to the top level origin. However, that dos not mean that all the components in that assembly also are locked. Those components have their individual origins. To do that you can create a rigid group joint for that assembly by right clicking on the Box assembly and selecting "rigid group" from the menu.

The Cover assembly also needs to be rigid grouped, so all the components in it are "locked" together and to the assemblies origin.

Now you need to assemble the Cover assembly to the Box assembly.

There are many ways to accomplish his. Cam creating an auxiliary sketch in the box component which helps define the center point on top of the box where I would the Cover to be assembled to.

Then I assemble the cover to that sketch point.

Re: Strange behaviour when moving component.

TrippyLighting — Sat, 14 Sep 2019 12:51:22 GMT

@g-andresen I've unmarked your post as being the solution. The "wrong position" can be corrected by simply clicking on revert. The rest is explained in my post.

Re: Strange behaviour when moving component.

DutchPainter — Sat, 14 Sep 2019 17:34:18 GMT

Thank you all for your comprehensive comments. i will probably need some time to understand it all and will look into it next week.

Yolanda