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Basic 3D Drawings

Faculty of Electrical Engineering. Lecture : En. Syahrom Bin Zakaria. Basic 3D Drawings. X - a positive value pointing to the right on the screen; Y - a positive value pointing up on the screen; and Z - a positive value pointing straight at the user in 3D space.

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Basic 3D Drawings

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  1. EC202 COMPUTER AIDED DESIGN Faculty of Electrical Engineering Lecture : En. Syahrom Bin Zakaria Basic 3D Drawings

  2. X - a positive value pointing to the right on the screen; Y - a positive value pointing up on the screen; and Z - a positive value pointing straight at the user in 3D space. IMPORTANT 3D TERMINOLOGY

  3. Horizontal plane; Frontal plane; Profile plane; Oblique plane; and Inclined plane. The possible planes use in CAD drawings

  4. Position of UCS in 3D

  5. UCS Toolbar

  6. Wireframe; surface; and Solid TYPE OF 3D MODELS

  7. Wireframe Modeling

  8. SURFACE MODELING

  9. SOLID MODELS

  10. Methods Of Creating 3D Solid Models • Extruding a 2D Object Object in 2D view Object after Extrude

  11. Revolving an Object about a Cylindrical Axes • From the pull down menu select Draw – surface – revolved surface as shown

  12. Select the object to be revolve and define the axis of revolution

  13. Full Revolve

  14. 1800 Revolve

  15. Using the Basic Primitives Can you name these primitive shapes?

  16. Drawing of 3D Primitives • BOX UCS at X rotate 900 At World UCS

  17. Box at UCS Y rotate 900

  18. Wedge • UCS World

  19. Wedge • UCS X rotate 900

  20. Wedge UCS at Y 900 rotate

  21. Cylinder • UCS World

  22. Cylinder UCS X 900 rotate

  23. Cylinder at UCS Y 900 rotate

  24. 3D EDITING COMMANDS • BOOLEAN OPERATION UNION

  25. SUBTRACT

  26. INTERSECT

  27. INTERFERE INTERFERE is an identifier command. It identifies (highlights) the area where two selections of 3D solids overlap and gives you the option to create a new 3D solid from the overlapping volume. 3D Editing Commands

  28. Is similar to the command for 2D drawings. FILLET and CHAMFER

  29. Chamfering an object • For chamfering an object as shown below, you must enter command “Chamfer”. • Select the distance of chamfering or angle in the command prompt (the example to you is a distance). • Select edge to be chamfer

  30. Enter distance of chamfering in this example: The 1st dist. is 20mm, 2nd dist is 30 mm

  31. Fillet an object • First enter the command “fillet”, • Enter the radius (20mm in example), • Select the the edge to be fillet,

  32. 3DARRAY

  33. 3D Draw Commands • SECTION

  34. SLICE

  35. USER COORDINATE SYSTEM (UCS) in 3D • UCS toolbar WCS 3 point

  36. Using UCS 3 point • To draw a circle in an inclined surface Y.

  37. Specify new origin point; • Specify point on positive X-portion; • Specify point on positive Y- portion

  38. A circle is drawn on surface Y.

  39. Solview is a command provide another method of setting up orthographic views and it is superior to some of the options because it setup layers according to your named view. To implement solview, work in the multistep process: 1. Create a 3D solid modeling, What is SOLVIEW

  40. Create the 3d as follow:

  41. Choose layout 1 from the bottom of drawing window as shown Layout1 (layout tab)

  42. Page setup dialog box will appear Change paper size if necessary Then, Click ok

  43. A 3d view will appear like as follow: Delete this view first

  44. Command : solview (enter) Enter an option [Ucs/Ortho/Auxialiary/Section]: Ucs (enter) [Named/World/?/Current]<Current>: (press Enter) Specify view center<specify viewport>: (pick any point, the top view will appear, then press Enter) Specify first corner of viewpoint: (use window to pick the points.) Enter view name: top (press Enter) From here, enter “solview” at commnad prompt.

  45. Top view will appear first

  46. Enter an option [Ucs/Ortho/Auxialiary/Section]: ortho [Named/World/?/Current]<Current>: (press Enter) Specify view center<specify viewport>: (pick any point, the top view will appear, then press Enter) Specify first corner of viewpoint: (use window to pick the points.) Enter view name: front (press Enter) To create the front view

  47. Pick from midpoint as shown Midpoint of border

  48. Drag it down as shown

  49. The front view will appear as shown below:

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