Learn how to measure to and from various objects.
- [Instructor] Here I want to discuss how to perform some basic measurements, analysis of the part. We have a toolbar, let me bring this up, called measure. And on that toolbar we have measure between, measure item, and measure inertia. Now I'm going to select the measure between icon. And as you can see I have several options here. I have simply measure between, measure between in chain mode, and measure between in fan mode. Now with the standard measure between, you want to come in and be very specific about the type of element you want to measure.
Now what I want you to notice is the cursor changes as you hover across different element types. So if I come in and pick this face, you'll notice the cursor changes and it shows a plane next to the cursor. If I come up to an edge, you'll notice that it's showing a line indicating that this is a linear edge. If I select this edge off of that foot, you'll see that it is circular, shows a circle.
And up here, same thing, that's circular, that's planar, et cetera. What I also want you to notice is that when I pick a cylindrical face or iconical face, you'll see it wants to, by default, select the axis of that face, and the same thing for edges that are circular, as such, it wants to go to the center point, in this case this is a counter sync or basically a cone, and it wants to go to the, again, center axis.
This is what I mean by being very specific about what type of filter you're using and what you're selecting with the measure, otherwise you'll get a measure that's incorrect. Now you'll see selection mode one, selection mode two, so for the first selection mode, you have quite a few items you can use. Any geometry, any geometry infinite, picking point, point only, edge only, we'll cover these first several. With any geometry, I'm going to go ahead and pick this edge and I'm going to go ahead and pick this edge.
You'll notice it gives me that measurement, 91 millimeters from edge to edge. You look in the window, it'll also tell you that you have 91 millimeter minimum distance, angle zero degrees and it tells you calculation mode is exact. If I click on the customize, you'll notice that I can also show within the 3D panel, additional components. I can also show, within the actual measure menu, additional items, .1 and .2, I'm going to select okay.
By doing so, you can see here, this is my measurement, this is what's being measured, and you can see basically the deltas. So here is where my .1 is located, this is where my .2 is located, you can see my delta, my component, so if you want direct X, direct Y, direct Z between those two points, you have that here as well. Now I'm going to go in and I'm going to measure from this top face to this face.
We know that's five millimeters. Now what if I wanted to measure to this outer edge? Again I'll pick, go ahead and cancel out of this and restart the menu, go back into my measure, I'm going to pick this top face, if I wanted to measure to this edge, you'll notice by default it wants to pick to the center, you can see the little dot that appears here at the center when I hover over that edge. So I have to be very specific, I'm going to come in here and for selection mode two, say edge only. Now you'll notice that dot at the center is no longer there, I can pick that edge, so that measurement now goes between this top face to this outer edge.
I'm going to come in once again, say measure between here I can also pick surface only. So rather than just picking the edge, I may want to pick this actual surface, so I can pick from surface two, you'll notice that when I try to pick this top face it won't allow me to select it and the reason behind it is because selection two is set to edge only. Now I can change that, I'm going to come in and specify any geometry, pick this top face, and I get that measurement once again.
So being very specific about what you're picking is very important. Now as far as these measure between with chain mode and fan mode, these are actually very nice. With chain mode, I'm going to pick this edge, I'm going to go to this edge, and you'll notice that it measures from here to here, yeah my 7.185, now I'm going to come all the way across over to this edge, and what you'll see is that it's chaining from this edge, it went to this edge, now from here to here, so if you have several measurements that you need to do but you don't want to have to measure back to the previous element you use chain mode.
You can use fan mode, the first element you select is going to be your base element, so off of this base element, here we go, and I go to the next element, you'll see that it measures to this first element, I'm going to come back over to this edge, and you'll see now that base element is the same and it just goes to the next element and to the next element and so on.
If you want to see all of those measurements remain, you just turn on keep measure, and I'll just leave fan mode turned on. Go from here to here, to here to here, and what you'll see are all the measurements based off of my fan mode going back to the original face that I had selected. So these very powerful tools are very, very, very specific, I can't stress that enough, because I've seen people do things in the past where they think they're getting the accurate dimension but it's actually measuring to something out in space and they end up in trouble, so just be wary, be very cautious, make sure that you come in and get very comfortable determining the selection mode, what you are picking and why you're picking that.
- Working with the CATIA v5 UI
- Understanding the menus
- Part visualizations
- Part design workflow
- Creating a sketch
- Basic editing
- Creating and editing sketch curves
- Part design
- Measures and analysis
- Building a project