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SolidWorks 2014 Essential Training

Creating general dimension notations


From:

SolidWorks 2014 Essential Training

with Gabriel Corbett

Video: Creating general dimension notations

In SolidWorks, the size and features are defined in the model.
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  1. 1m 51s
    1. Welcome
      1m 7s
    2. Using the exercise files
      44s
  2. 31m 13s
    1. Launching SolidWorks for the first time
      3m 55s
    2. Accessing and customizing the Ribbon
      4m 14s
    3. Touring the shortcut bar and identifying essential keys
      7m 27s
    4. Saving, renaming, and managing files
      10m 28s
    5. Working with the new view cube, or View Selector
      2m 36s
    6. New features in SolidWorks 2013 and 2014
      2m 33s
  3. 14m 11s
    1. Understanding the 3D world
      2m 31s
    2. Creating your first part
      3m 15s
    3. The virtual, parametric prototyping environment
      1m 56s
    4. The FeatureManager and feature-based modeling
      3m 43s
    5. History-based modeling and the rollback bar
      2m 46s
  4. 28m 32s
    1. Starting a new sketch
      6m 50s
    2. The six steps used in almost all modeling features
      52s
    3. The Line and Centerline tools
      3m 25s
    4. Using the Circle tool
      1m 51s
    5. Adding and removing relationships and dimensions
      6m 56s
    6. Understanding relationship types
      3m 58s
    7. System options, units, and templates
      4m 40s
  5. 18m 28s
    1. Drawing rectangles
      5m 31s
    2. Creating arcs in a sketch
      4m 8s
    3. Drawing splines in a sketch
      4m 57s
    4. Sketching polygons
      3m 52s
  6. 36m 5s
    1. Trimming and extending portions of a sketch
      3m 54s
    2. Creating offset geometry
      3m 13s
    3. Moving, copying, rotating, and scaling elements
      3m 13s
    4. Erasing, undoing, and redoing actions
      2m 24s
    5. Using the mirror tools
      2m 24s
    6. Creating repeating patterns in a sketch
      4m 55s
    7. Using construction lines to build robust sketches
      3m 25s
    8. Applying fillets and chamfers to a sketch
      2m 32s
    9. Working with slots
      3m 46s
    10. Adding text to parts
      4m 1s
    11. Using the Convert Entities command
      2m 18s
  7. 9m 33s
    1. Working with planes
      5m 28s
    2. Placing and using axes
      2m 22s
    3. Placing a coordinate system
      1m 43s
  8. 17m 50s
    1. Extruding a sketch into a 3D object
      4m 36s
    2. Using Revolve to create 3D parts
      2m 42s
    3. Using Loft to create complex shapes
      4m 40s
    4. Refining a loft shape with guide curves
      2m 22s
    5. Using the sweep to create wire and pipe shapes
      3m 30s
  9. 20m 23s
    1. Modifying parts using the Extruded Cut tool
      5m 42s
    2. Working with the Revolved Cut tool
      6m 19s
    3. Using the Lofted Cut tool
      3m 32s
    4. Cutting holes and grooves with the Swept Cut tool
      4m 50s
  10. 21m 5s
    1. Using fillets and chamfers to smooth corners
      5m 58s
    2. Creating repeating rectangular patterns
      3m 16s
    3. Creating a circular pattern
      2m 27s
    4. Mirroring objects
      4m 0s
    5. Using the Shell and Draft tools
      3m 52s
    6. Scaling parts
      1m 32s
  11. 9m 39s
    1. Working with reusable sketches and blocks
      2m 47s
    2. Creating blocks
      3m 51s
    3. Designing with blocks
      3m 1s
  12. 29m 45s
    1. Understanding the tools for beginning a new assembly
      4m 46s
    2. The basic steps in creating an assembly
      3m 18s
    3. Mating parts together in an assembly
      6m 43s
    4. Working with subassemblies
      2m 9s
    5. Linear and circular assembly patterns
      4m 56s
    6. Downloading premade parts from the Internet
      3m 32s
    7. Using Toolbox
      4m 21s
  13. 15m 8s
    1. Mating parts with coincident, parallel, and distance mates
      4m 35s
    2. Mating parts with width mates
      5m 53s
    3. Mating parts with path mates
      2m 5s
    4. Mating parts by aligning planes
      2m 35s
  14. 10m 20s
    1. Getting started with the Hole Wizard
      4m 38s
    2. Positioning holes in layout sketches
      5m 42s
  15. 15m 27s
    1. Linking sketches to other parts
      4m 28s
    2. Linking to layout sketches
      6m 48s
    3. Using the Hole Wizard in context
      4m 11s
  16. 17m 15s
    1. Understanding threading concepts
      7m 17s
    2. Using a helix and Swept Path to create a thread
      4m 2s
    3. Understanding internal threads
      5m 56s
  17. 17m 25s
    1. Using equations to drive a sketch
      5m 5s
    2. Working with complex calculations
      2m 6s
    3. Integrating Microsoft Excel to manage design tables
      7m 10s
    4. Building assemblies using part configurations
      3m 4s
  18. 23m 17s
    1. Working with drawing templates
      6m 49s
    2. Setting up drawing options and sheet properties
      3m 43s
    3. Choosing the correct projection angle
      2m 21s
    4. Adding model views to a drawing
      10m 24s
  19. 16m 8s
    1. Creating general dimension notations
      6m 37s
    2. Creating ordinate and running dimensions
      3m 0s
    3. Dimensioning holes and curved features
      3m 8s
    4. Using the autodimension tools
      3m 23s
  20. 14m 38s
    1. Creating holes and callouts
      5m 8s
    2. Adding center marks and centerlines to a drawing
      3m 46s
    3. Adding item notes
      2m 57s
    4. Making drawing revisions
      2m 47s
  21. 11m 42s
    1. Adding assemblies to drawings
      2m 10s
    2. Including a bill of materials
      1m 42s
    3. Adding balloons to specify parts on an assembly drawing
      1m 39s
    4. Adding a title block and sheet properties
      2m 8s
    5. Building an exploded view for an assembly drawing
      4m 3s
  22. 1m 2s
    1. Next steps
      1m 2s

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SolidWorks 2014 Essential Training
6h 20m Beginner Dec 09, 2013

Viewers: in countries Watching now:

SolidWorks is the world leader in 3D software for product development and design. Start creating manufacturing-ready parts and assemblies, as well as detailed drawings and bills of materials. In this course, author Gabriel Corbett shows how to create 2D sketches that will become the basis for your 3D models. You'll use the Extrude and Revolve tools to turn 2D sketches into 3D parts, then create more complex geometry with sweep and lofts. Then learn how to use the cut features to remove material and shape parts, and use mirroring, patterning, and scaling to modify parts. Next, you'll combine parts into movable assemblies and subassemblies. Finally, you'll create accurately annotated drawings, complete with itemized bills of materials that relate the final parts and assemblies to a manufacturer.

Topics include:
  • Creating your first part
  • Starting a new sketch
  • Adding and removing relationships and dimensions
  • Sketching polygons
  • Creating offset geometry
  • Moving, copying, and rotating elements
  • Working with planes, axes, and the coordinate system
  • Using Revolve and Loft to create 3D objects
  • Trimming with the Revolve, Loft, and Sweep cuts
  • Creating smooth and angled corners with fillets and chamfers
  • Designing with sketch blocks
  • Working with subassemblies
  • Creating threaded parts
  • Integrating Excel to manage design tables
  • Adding dimension notations to a drawing
  • Rendering an image of a part or assembly
Subjects:
Product Design CAD 3D Drawing
Software:
SolidWorks
Author:
Gabriel Corbett

Creating general dimension notations

In SolidWorks, the size and features are defined in the model. Therefore to add dimensions, we just need to define what values, and where to show them. SolidWorks has an autodimension command as well, that can do a lot of this for us. The tools are straightforward. However, what is not straightforward is understanding what and where to tolerance. There's a lot that goes into this, and we'll cover the basics. To get started, notice, I've got 18.1-1 opened up, the drawing of that part. And you can see here, I'm looking at the top view. And first thing's first, I want to get started with using the regular Smart Dimensioning tool.

I also want to point out, before we get started, if you click on this little drop-down arrow on the Smart Dimensioning tool, we have a whole bunch of different dimensioning things we can use here. The Smart Dimension kind of just automatically picks one of these for us, so I'm going to go ahead and use that. But you can specifically choose, for instance, a horizontal dimension or a vertical dimension or a baseline ordinate. And we're going to be getting into a lot of these. Starting off, smart dimension. Let's get started. Okay. The first scheme we're going to be using is called a baseline dimensioning scheme. And what that means is we're going to have to choose a baseline. A baseline's just a choose a line in the part. In this case here, this is going to be my baseline for the horizontal.

And this is my baseline here for the vertical. So starting off, pick this line here. Come over here and pick one of the features like this circle here. And then I'm going to come down and place where I want that dimension to be. Pretty simple. The dimension is already defined from the solid model. So I don't have to go and type anything in here. It's just referencing the solid model, and putting the dimension on my drawing. Pretty easy. Select this line again. This time select anywhere on the outside edge of the hole. Or the inside hole. Doesn't really matter. Again, place the dimension. Over here, this next hole from there to there, dimension, great.

From this line to this arc, which will then show us the center point of that arc. Go ahead place the dimension. If you want to dimension these lines up here at the top, you can still choose that same baseline and then just place the dimension on the upper side of the model. Again, choose a line, to the leather line, place the dimension. Start from this line here, dimension of this line here, place the dimension. So everything is always starting from that same baseline. That's the key. We always have to go back to the original line, and every dimension has to start from there. Start from here, dimension to a hole. Place the dimension.

Start from here, go to the end of the part, place the dimension. You can see this dimension scheme is quite easy to work with. However, if we have a lot of features, you can really stack up quite a few dimensions and sometimes it can get a little bit unwieldy, when you have a hundred dimensions in a row underneath a part or above a part. So we might want to look at some other dimension schemes in that situation. The next one I'm going to work on is doing that vertical baseline. So back to the Smart Dimensioning tool. Click on this bottom line here and then again to maybe the first hole. There's my first dimension from that line to this second hole.

From that line to the third hole. And once you have them, obviously you can move these things around, make them look a little nicer, right? I can place the dimensions here. I can align them so it looks a little more clean and you can place dimensions below the parts if you need to. You can place them inside the parts. You can move everything around getting so it's looking nice and uniform. And that's the key. Now if I want to change the tolerance or the amount of decimal places I'm showing, I can easily do that by clicking on a dimension. Coming over here to the dimensioning tool bar and I can choose what type of precision I'd like to add. So I can add like a basic or bilateral or symmetric.

So, for instance if I use a bilateral it'll change and add that to this dimension right away and I can type in oh, I want to have this to be plus ten, but minus nothing. And I can determine how many decimal places I'd like to add so I could say I want, two decimal places. And that will round that down or I can add more if you want but, in general you don't want to add more decimal places than you need to fully define the part the way it needs to be. You don't want to add, oh I can add this many decimal places. Sure you can, but you don't want to do that 'cause it's going to make the cost of your part much, much higher if somebody's tryna actually manufacture this to that level of precision.

So you want to make it as loose as you can in order to fully satisfy the requirements of the part. That's kind of the key there. So cut this back to two place decimals. Looks great and you probably change the other ones. Anyways, that's what we call baseline dimension scheme. The next one I'm going to do is what we call a chain dimension. So I'll just go ahead and delete these dimensions here. I'm just deleting them by running a box around them and hitting delete on my keyboard. And you can just pick individual ones as well. Just delete, delete, delete. Okay, now we're going to jump into what we call the chain dimension.

The chain dimension back up here, is just really how you choose the entities. So from the first entity here, I'm going to dimension to this first hole. From the bottom line here, I'm going to dimension to this first hole. Again, same hole. Now, instead of dimensioning this way or that way, I'm going to dimension from that hole to the next hole. And then from that hole to the next hole, and again from that hole again to the next hole. So what you see here is one is reliant on the previous dimension, so what happens is is As we start stacking these up, we get what's called a tolerant stack up.

So if these are plus or minus five thousandth of an inch, each one, and when you get down to the end we've added five thousandths, ten thousandths, fifteen thousandths of tolerance between the first hole and the last hole. Where as if you were to use a regular baseline dimension, like from here to the last hole, that would by control plus or minus five thousands of an inch from this line to that hole. So you have to really choose and see what's important in your design. In this care here, if it's more important to have a 0.6 between these holes than it is to have the dimension from the edge than this might make sense.

But a lot of times, chain dimensions can get you in trouble because that last hole can be way out of tolerance from where the first hole is, and so on. So, keep in mind how your part will be used at the end of the day, what's important to the design. And a lot of times, you'll end up coming with some type of dimension scheme that uses a combination of both baseline and chain dimensions. And that's what I'm going to show you next. Go ahead and delete these, and what we're going to do here is, we're going to dimension from the bottom edge to this first hole. So that's a baseline dimension. Then we'll do a chain dimension from here up to the next, and then I'm going to continue going back to this first hole.

So then that will become my new baseline. So I'm going to dimension each one of these holes based upon that first hole. And the reason I want to do that is, I wa-, I want to make sure that these holes are tightly held in tolerance. However, I might want to loosen up what that tolerance is to the edge of the part. So over here, instead of 0.350, let's change that to maybe 0.35. So I have a little bit looser tolerance, plus or minus ten thousandths from the first hole to the edge, but then from that first hole I'm holding plus or minus five to all the other holes. It's a nice way to use a combination of both, and gives, it's a nice space saver as well.

Dimensioning and Tolerancing is a class in itself. We touch on the basics in this movie, however, this is definitely an area that will require a bit more study to be great.

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