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Mastering AutoCAD Design Testing Strategies

Learn systematic testing in AutoCAD design, record results, and use them to enhance your creations. Explore CAD accuracy, drawings, and modification commands for efficient design processes.

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Mastering AutoCAD Design Testing Strategies

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  1. Class11_2 Today’s topics: • More on AutoCAD

  2. DP…questions?

  3. Reminder: Testing • Your design report requires test results. • Testing should be systematic and based on a clear plan. • Result should be recorded and evaluated, and should be connected to how the results were used to improve the design.

  4. CAD • Can be highly accurate • Allows easy repetition and revision • Provides input to other analyses and manufacturing programs

  5. CAD • Drawings are full scale (true size units) • Objects (such as lines) have numerically defined properties, such as end-point coordinates

  6. CAD Bottom line…. A CAD file is a NUMERICAL DATABASE describing your part. It is not a picture. Need to adopt this mindset when making a CAD drawing.

  7. AutoCAD • Ways to specify coordinate points: • Pick (interactive with mouse) • Absolute X,Y • Relative rectangular @X,Y • Relative polar @distance<angle • Direct distance

  8. AutoCAD • Modify commands • Selection sets • Oops • Undo

  9. AutoCAD • Setting up drawings • Limits • Zoom window, zoom previous • Zoom all

  10. Drawing aids • ORTHO to restrict only horz/vert lines • OBJECT SNAP enables the cursor to “snap” to existing object features, such as end points • Types of object features to snap to • Running OSNAP • Command line OSNAP

  11. More AutoCAD functionality • Construction line type • More Modify commands: Fillet, Offset • More Modify commands: Mirror

  12. Exercise • Draw top item on the handout • Do not include dimensions • If you already know how to do this, help a person sitting near you.

  13. More AutoCAD: Layers • Layers • Tip: the availability of layers is a great feature of CAD…learn to use layers effectively (use lots of them) • Do not draw on the 0 layer or the defpoints layers. These have special properties and should be reserved for that use.

  14. Example of using layers • Set up layers in preparation for drawing Layers: • Part, black, continuous • Construction, light grey, continuous • Center line, black, centerline style

  15. More AutoCAD functionality • LTSCALE • Layer properties (setting, by layer, override) • Change properties • Lineweight

  16. More AutoCAD functionality • Modify command: Trim • Recall: circles can be drawn (TTR)

  17. Exercise • Draw bottom item on handout • Do not include dimensions • Be sure to set up your layers first • If you already know how to do this, help a person sitting near you.

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