Reviewing a design for 3 axis CNC milling

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In this video, will review a design for 3-axis CNC milling.

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After completing this step, you'll be able to use, measure, accessibility analysis and minimum radius analysis.

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In fusion 360, we're going to get started with the gear housing front housing only.

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In this design, we first want to start by changing the document units to inch.

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Since we're going to be taking a look at inch sized stock and tools, when we're machining this part,

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we're going to make sure that the units at the document level or inch, so it helps us when we're measuring.

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The first thing that I want to do is I want to figure out what size stock will fit around this part.

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So I'm going to go to my select, selection tools and you select by boundary.

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While this isn't strictly needed, it does help us get a good idea of what size stock is needed in order to fit this part.

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So when we take a look at this we're at close to over half inch.

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And then in the X-axis were at 5.2-6.

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So in this case we need a fairly large piece of stock in order to machine this part but that helps us understand exactly what size were starting with.

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So we can identify this.

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The next thing that I'm going to do is use some of my measure tools,

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under inspect I first I'm going to start with measure and I want to take a look at some of the various values of the different features.

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This will help me identify what size tools I might need.

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For example, the diameter of this whole is .267 depending on its requirements, it might be a tapped hole or it might be a through hole.

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If it's a through hole, I can use a quarter inch drill and then come back and machine the final size.

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Let's go ahead and left click in the canvas and select some of the other geometry.

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This one is .236. And the smaller hole here is

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Let's go ahead and rotate this around a little bit.

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I want to see the overall height of the design, .51 to which we got from the select by boundary.

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And when we take a look at the geometry, you can see that there is a smaller portion.

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In this case, it's .197 on this bottom side and then the rest of the material laptop.

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There are a lot of different features in this part and we want to make sure that we can access them all when we're machining.

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So I'm going to go up to inspect and I'm going to take a look at two other inspection tools.

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Accessibility analysis and minimum radius analysis.

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First with accessibility will select the body and then the direction going to select the top of my part,

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and as long as everything is green, that means that we can access it from that side.

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This tells me that none of the walls are tapered and there are no overhangs that I have to worry about.

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The next thing I'm going to do is take a look at minimum radius analysis.

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Once again, I'll select the body and we can see in the dialogue,

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the maximum tool radius 0.984 the minimum is set to zero and the optimum minimum radius is 00.991.

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So this is telling me that this is the size tool that I'm needing, if I'm going to get into some of the smaller areas.

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Remember that this is really only indicating an internal radii .

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So if we use inspect and measure and we take a look at these corners, for example.

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You can see that the diameter is .394 and the radius is .197.

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But there must be some area where we have a relatively small section that we need that size tool,

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but for the most part it looks like we'll be able to use a quarter inch tool to finish off this geometry.

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Any time we accept an accessibility analysis or minimum radius analysis, they'll get placed in this analysis folder.

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We can hide or show the entire folder but if you have multiple things such as a section view, you want to go in and hide individual ones.

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At this point, let's go ahead and navigate back to a home view, and let's save this design before we move on.