Model preparation

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Model preparation.

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In this video we'll use delete, derive and will edit a feature.

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In Fusion 360, we want to carry on with our motorcycle rear set model prep dataset.

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In this video, we're going to talk about some of the tools in order to extrapolate data from an assembly,

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and how we can use that to our advantage when we're working on larger datasets.

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The dataset that we have here is a simplified version of a motorcycle rear set.

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This is obviously a portion of a much larger assembly, one that contains an engine that has many moving parts,

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a lot of hardware for the chassis and many other components that we simply just don't need for what we're trying to do.

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So we're going to take a look at this smaller assembly and how we can pull out pieces of it,

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and we could reuse the same process when we're working on larger assemblies.

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The reason that we might do this is to simplify the overhead calculations needed,

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when we're talking about making modifications or setting up our designs altogether.

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The first step in this process is to understand what tools we have available.

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So first, when we go to our Create dropdown menu, you'll notice that we have something called Derive.

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Derive is a tool that allows us to take elements out of the design we're working on in this case the body or a component,

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but it could also include other things such as flat patterns from sheet metal components,

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and even parameters that are used to derive an existing design.

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So what we want to talk about is how we can use derive to our advantage when we begin simplifying a design.

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So let's select Derive.

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And the first thing we'll notice the dialogue on the right hand side has create new design or add to an existing design.

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If you already have an assembly where you've pulled components out of,

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you can use this add to existing if we needed to bring in for example the pivot bracket in addition to the frame mount.

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We're going to focus on just a single component.

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So we want to select the frame mount and notice that now we have one selected and inside the bodies folder shows that's body one.

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We can make some adjustments such as placing it at the origin or leaving exactly where it is in relation to the coordinate system that's defined as,

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and then we can also go down into the parameters and we can bring along any favorites or from component parameters that were used to define it.

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None of these exist in this design.

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So we'll leave those unchecked for now and select Ok.

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Fusion 360 brings that design out of its current assembly and it starts a new untitled document.

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You'll notice that we no longer have a component but simply a body and there's an icon with an arrow pointing that body back to the original design.

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In the timeline at the bottom, you'll note that we have a component that's telling us it's derived from an existing external design.

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Currently our design is unsaved and that's okay because we don't really need to save this design to understand the process.

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What we do want to understand is the flow of data, how it works with the Derive and what that really means for our process.

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So the first thing that I want to do is I want to take a look at this chamfer.

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The small chamfer we're going to select, go to Modify and select Delete.

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Even though we didn't have the chamfer inside of our timeline, we were able to select it and delete it using direct modeling tools.

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If we go back to the original design, there are no changes here.

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Let's activate the frame mount, let's right click on it and let's also isolate it.

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So we're just focusing on one element of this design.

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Let's use our direct modeling tools inside of here to remove the hole in the center of this design by selecting Modify and Delete.

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From here, if we go back to the untitled document, nothing has happened yet because nothing has been saved.

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But if instead we save the new document, we get a new version in this case, version three.

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When we go back to our derive, it now tells us that it's out of date.

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We get a warning at the top of our browser and also at the top of the design in Fusion 360,

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telling us that one of the components needs to be updated because it's now out of date.

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When we select this icon, it's going to bring in all those design elements.

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You can see that we now have the hole filled in in this design and the chamfer has still been removed.

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So whenever we're working on a derive,

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it's important to understand that any changes made at the top level or the original assembly will go down along the pipeline to that derive.

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But any changes we make in the derived will not come back up to the original design.

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For this design in this example, we're going to go back to the timeline,

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we're going to select that delete, right click and simply delete it from our timeline because we don't actually want to remove that whole.

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It's going to be an important feature.

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We want to have it in the design.

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Then let's say this one more time which will update our version,

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and let's go back to our untitled document and once again it's telling us that it's out of date, let's update it and bring that whole back.

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Now that we can see the derived workflow.

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It's also important to understand that if we want to we can break the link.

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Just like when we're creating a distributed design where we bring a component from an external source into our current design,

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we can also break the link here severing the tie to the original assembly.

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We can do that by right clicking on the body and selecting break link.

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It's important to note, however, if we break this link, we cannot reconnect it.

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The source design features will no longer affect the derive.

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This is a great option if you want to make many different unique versions of this design and you don't want the original to have any effect at all.

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Now, if we look at the timeline, we simply see a base feature as well as the delete face that we used to remove our chamfer.

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Once again, this process can be helpful if you have a rather large design and you need to isolate a small section of it,

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maybe a handful of components or even just one single body.

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We can then do some additional work to make a unique version of it and then we can take a look at it in simulation.

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Because simulation also possesses a very powerful tool called Simplify,

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we're going to be exploring simplify throughout our process of setting up a linear static stress.

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So for our examples, we don't need to keep this bracket and I'm simply going to close it without saving.

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However, if you want to continue to play around with this derive workflow, go ahead and save that bracket on your own inside of your data panel,

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wherever you're storing your project data sets.

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I also want to go back to my frame mount and I want to unisolate to bring all the rest of those components back.

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You'll note that their opacity has still changed because our frame mount is active.

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So let's also make sure that we activate the top level of the design to bring everything back.

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From here, I'm going to go back to Home view to make sure everything centered and fit the screen and save one more time before moving on.