Views and projections

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Blueprint, reading views and projections.

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After completing this video, you'll be able to

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review a blueprint, identify areas of a blueprint,

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identify drawing views and recall 1st and 3rd angle projections.

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In this video,

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we'll get started by referencing two supplied pdfs and then

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we're going to open up a fusion 360 design.

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Let's begin by taking a look at projections,

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drawing first angle and third angle PDF S.

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When we think about detailed drawings,

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we have to understand that these drawings

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are conveying information from the person who designed

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the part to the person who's going to manufacture the part or assemble the part.

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In this case,

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the basics that we want to understand are going to

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come down to different projections and different drawing views.

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These detailed drawings are intentionally simplified removing

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extra information such as the dimensions,

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tolerances and additional views to make sure that

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we understand the foundational concepts of a detailed drawing

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to get started. We're going to begin looking at our first angle projection.

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First angle projection information can often be found in the title

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block area in the bottom right hand corner of a drawing.

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We can see this by the symbol that we see in the title block.

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First angle projection will show the side view on the left hand side

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and it will show the front view on the right hand side.

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In this case,

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you'll note that there's a lot of different areas of

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this title block which have intentionally been left empty.

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And we're going to review those areas later.

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As we look at this detailed drawing.

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It's important to note that in Fusion 3

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the I O or I S O standard and the A sme

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when you're creating a first angle projection drawing,

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you need to use the ISO standard as this will set it as a first angle projection.

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But what does first angle projection actually mean?

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Well, in this case, our front view is gonna be located in the upper right

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hand section.

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Our top view will be located below the front view

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and our right view will be located to the left of the front view.

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Also note in the bottom left hand corner, we're going to see the isometric

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view

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while not all drawings will have these exact views.

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It's important that we represent our 3D models in these two D views as needed.

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In this case, these are going to be our standard views.

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Let's go ahead and take a look at the third angle projection drawing

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while this is a different standard.

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And it's also on a different sheet size it still contains the same information

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again in the title block area which now takes

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up the entire bottom of our drawing sheet.

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We can see a different symbol.

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This is going to be the symbol for third angle projection.

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Again in fusion 360 the A SME standard is

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going to be our third angle projection drawing type.

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When we have a third angle projection,

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our front view is gonna be located in the bottom left

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just above. That will be our top view to the right of it will be our right view.

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And in the upper right hand corner, we can see our isometric

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view.

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Now,

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it's important to note again that this

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detailed drawing contains very little information.

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And it's also important to note that the edges are all shown with full tang agency.

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This is typically not the case for detailed drawings, but for right now,

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it's important that we identify the types of drawing views and

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we don't focus on the specifics of a detailed drawing.

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Now that we've seen two samples, let's go ahead and hop into Fusion 3 60.

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If you've never used Fusion 3 60 before, once you get the program loaded and opened,

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you'll see an untitled document.

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This is default. Every time you open Fusion 3 60

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you want to make sure that you go to the

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upper left hand corner and expand what's called your data panel

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inside of here.

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At the very top level,

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you'll want to create yourself a new project to store all your data.

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In this case, I'm gonna be using a project called 22 Precision Machining Caliper.

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Inside of here,

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I like to create sub folders for different areas of

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the courses that way I can help organize my designs.

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So I created a new folder called S one.

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This is going to be the first section that we're working on

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inside of here.

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I've already uploaded some PDF drawings which can be

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placed inside of the Fusion 3 60 data panel.

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And I also have a design called Caliper Piston programmed.

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There are a couple of different ways that we can get our designs into Fusion 3 60.

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You can use the upload button and then you can either drag and

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drop it in this area or select it from your local machine.

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In this case, what I'm going to do is go to my file menu and select open

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again.

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We can navigate to any of our projects on

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the cloud or we can select open from computer.

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I want to select the drawing projections file.

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In this case, it's a dot F 3D which is a fusion archive file.

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We'll select open and this opens it in Fusion 3 60.

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This design isn't saved yet. So it's important that we save it at this time.

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We'll select save and make sure that the location

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is the project and sub folder that you created.

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In this case, mine is correct.

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But if yours isn't,

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you can use this drop down arrow to navigate to

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your project or create a new project and sub folder.

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I'm gonna select save and note that it's now inside of my data panel,

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inside of my project and sub folder.

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It also tells me the design is currently open

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by myself and I'm gonna hide my data panel.

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Typically, when you're designing in CAD,

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you don't have multiple versions of the same part.

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However, in this case,

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we're going to be taking a look at multiple versions of the same part

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so that we can identify the difference between 1st and 3rd angle projections.

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If we expand our bodies folder,

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note that we have a body for first projection and third projection,

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we also have cubes that represent the bounding boxes for each of these objects.

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These aren't going to be needed for right now.

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So let's make sure that the I icons are deselected

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inside of our sketches folder.

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There's a handful of sketches that we want to take a look at

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to get started. I want to show the right and top sketches.

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When we think about 1st and 3rd angle projections,

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we want to imagine that our objects are in a quadrant.

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Now, in this case,

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our first angle projection is in the first quadrant or the upper right hand.

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If you think about this as starting from zero or 12 o'clock on a clock,

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this 1st 90 degrees is going to represent the quadrant one

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in the Cartesian coordinate system.

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This is actually the opposite orientation than looking at a clock.

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So as we move down into the next 90 degrees, this is gonna be quadrant four.

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And finally over to quadrant three, you might be thinking, why is this important?

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This is the basis for the difference between our view layout.

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When we're in a first projection view.

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This means that our object is to the right of our right plane.

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It's above our top plane and it's in front of our front plane.

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When we're in a third angle projection view,

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it means our object is to the left of our right plane and it's below our top plane.

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It also is going to be placed behind our front plane

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to better represent this. Let's go ahead and hide our right and top sketches

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and let's hide our third projection body and go

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ahead and simply move this to the center.

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We have three sketches, first, front, first, top and first, right.

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And these are going to help us better understand the projections.

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If we rotate our object just slightly using our middle mouse wheel and the shift key,

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you can see that our object is in front of our front view,

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it's to the right of our right view and it's above our top view.

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This is exactly what we saw when we looked at our detailed drawing.

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If you want to remind yourself, go ahead and reopen your first projection view.

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You can see here that our front view is located in the upper right hand corner

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and it's just to the right of our right plane.

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So when we project our view onto that plane, it's shown on the left,

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it's above our top plane. So when projected, it's shown above the top view,

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when we take a look at our third angle projection,

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let's go ahead and hide our first angle projection and bring back our third,

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let's hide our first sketches and show our third sketches

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and then move it into the middle of our screen.

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As mentioned previously,

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this puts our object below the top plane

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to the left of our right plane and behind our front plane,

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we see this. When we look at a drawing view that has third angle projection,

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our top plane will be above the front view and our

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right plane will be to the right of our front view.

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Once again to remind ourselves,

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let's go ahead and open our third angle projection drawing.

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Our front is located in the bottom left.

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Our right view is to the right and our top view is above.

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You can think about this again in that third quadrant.

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So our views are going to be above and to the right.

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When we look at our first angle projection, we're in the first quadrant.

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So our views are gonna be below and to the left.

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Once you understand the basic concept of how our 1st

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and 3rd angle projections are laid out on detailed drawings.

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This will help you better understand 3d geometry.

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If you don't have access to the 3D model,

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understanding the orientation of the part and the drawing views

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is going to be an important aspect of manufacturing the parts

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at this point. Let's make sure that everything we've done is saved before moving on.