2. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 1Autumn Quarter Design Review, Isometric Drawings and Introduction to AutoCAD Lecture 4

3. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 2Autumn Quarter Topics For Today Using the Engineering Design Process (Review - Preparation for Lab) More Freehand Sketching –Isometric Sketches Introduction to AutoCAD 2002 –(You should have read Lesson 1 by now!)

4. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 3Autumn Quarter Topics For Today Suggestions For Leisure Reading –“All Corvettes Are Red” –“The Soul Of A New Machine” –“To Engineer Is Human” Hands-on Lab Tomorrow – HI 208 –READ TWTW, pp. 8-23 (or pp. 10-27 in 1st Ed.)

5. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 4Autumn Quarter FEH Program Web Page The FEH program web page may be found at: http:// feh.eng.ohio-state.edu Read lab write-up Tonight! –Click on Labs Link on FEH Homepage

6. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 5Autumn Quarter FEH Homepage Labs

7. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 6Autumn Quarter Engineering Design Process AS DEFINED BY BERTOLINE ET. AL. IDEATION REFINEMENT IMPLEMENTATION You will do it all in Lab this week

8. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 7Autumn Quarter Design What is design? –PROCESS OF CONCEIVING OR INVENTING IDEAS – Start w/ brainstorming for this lab The Art of Design –DESIGN FOR FUNCTION AND PURPOSE The Practice of Engineering Design –PRODUCT DESIGN

9. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 8Autumn Quarter Isometric Sketching – Example & Ellipses Goals A process for creating isometric drawings A process for sketching ellipses for isometric drawings Reference BTG Chapter 5

10. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 9Autumn Quarter 30 o 60 o Isometric Axis Making an Isometric Sketch - Defining The Axis

11. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 10Autumn Quarter Depth Width Height Isometric Axis Convention Making an Isometric Sketch - Axis Convention

12. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 11Autumn Quarter Object for Practice How would you sketch this object?

13. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 12Autumn Quarter Front Face Height Width Blocking in the Object – Begin with Front Face Start with Isometric Axis

14. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 13Autumn Quarter Height Depth Side Face Blocking in the Object – Add Side Face

15. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 14Autumn Quarter Top Face Blocking in the Object – Add Top Face

16. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 15Autumn Quarter Adding Detail – Cut Outs – Part 1

17. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 16Autumn Quarter Adding Detail – Cut Outs – Part 2

18. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 17Autumn Quarter Adding Detail – Cut Outs – Part 3

19. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 18Autumn Quarter Darken Final Lines

20. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 19Autumn Quarter Isometric ellipses In an isometric drawing, the object is viewed at an angle, which makes circles appear as ellipses. Holes Cylinders

21. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 20Autumn Quarter Ellipses can be in any plane

22. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 21Autumn Quarter Sketching an Isometric of a Hollow Pipe

23. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 22Autumn Quarter Step 1 - Creating the Base Box Diameter Length

24. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 23Autumn Quarter Step 2 – Ellipse on Front Face Lines to Tangent Points - lines to tangent points - corner to corner to get center Tangent Points

25. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 24Autumn Quarter Step 3 – Ellipse on Front Face Tangent Points Sketch in Arcs

26. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 25Autumn Quarter Step 4 – Ellipse on Back Face and Profile Draw Tangent Lines for Profile Complete Visible Part of Back Ellipse Repeat for ellipse on rear face

27. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 26Autumn Quarter Step 5 – Ellipse for Hole on Front Face Create Box for Hole Sketch Ellipse

28. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 27Autumn Quarter Isometric of Hollow Pipe

29. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 28Autumn Quarter Defining Hidden and Center Lines Hidden Line – used to represent features that cannot be seen in the current view Centerlines – used to represent symmetry and to mark the center of circles and the axes of cylinders, and the axes of symmetrical parts, such as cylinders and bolts

30. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 29Autumn Quarter Example Visible Line Center Line Hidden Line

31. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 30Autumn Quarter Precedence of Lines VISIBLE LINE takes precedence over all other lines HIDDEN LINE and CUTTING PLANE LINE take precedence over center lines CENTER LINE does not have precedence

32. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 31Autumn Quarter Example Application of Precedence

33. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 32Autumn Quarter Engineering Drawings Drawing Borderline and Title Block –Borderline – Space outside left blank so details are not lost if the edge of the drawing is torn –Title Block – Information about who did the drawing, when it was done, where it was saved

34. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 33Autumn Quarter AutoCAD 2002 A 2D drawing and 3D modeling package Will learn to use the software through a variety of guided exercises and homework assignments Today's Lesson –Geometric Construction Basics

35. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 34Autumn Quarter AutoCAD Startup Screen This is the opening screen for AutoCAD 2002

36. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 35Autumn Quarter AutoCAD Toolbars Object Properties Toolbar Standard Toolbar Pull-down Menus Draw Toolbar Modify Toolbar Graphics Cursor Graphics Window Command Line Cursor Coordinate Display

37. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 36Autumn Quarter Today’s Drawing This is object that will be drawn today

38. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 37Autumn Quarter AutoCAD Title Block For each drawing that you turn in, you will need to insert a title block STEPS –Complete the drawing –Go to Layout 1 Click OK when the window pops up –Use the Insert Command [INSERT] Select the file “TITLE BLOCK” Select Explode the Title Block (so you can edit) –Use the Edit Command to change the text [ED]

39. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 38Autumn Quarter TB – Step 1 Drawing is Complete Layout1

40. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 39Autumn Quarter TB – Step 2 Select OK

41. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 40Autumn Quarter TB – Step 3TITLEBLOCK Select OK Explode - Yes INSERT Command

42. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 41Autumn Quarter TB – Step 4 Enter Title EDIT Command Click on Text * Repeat for each Field *

43. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 42Autumn Quarter TB - Complete Completed Drawing Print Preview

44. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 43Autumn Quarter AutoCAD 2002 – Lesson 2 Work through the lesson at your own pace Ask questions as they come up Once the Guide Plate is drawn and has a Title Block, print it and turn it in. Draw Exercise 2 – this will be Drawing 7 Think about what you are doing while you follow the steps. Goal - be able to draw without the book!!

45. Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 4P. 44Autumn Quarter Assignments Dwg 7 – Lesson 2, Exercise 2 (page 2-23) –Save as MOUNT BLOCK –Due at end of class today Dwg 8 – G15 –Sketch a pictorial view of each object –Due at the beginning of the next lecture