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Design Process Isometric Drawings

Design Process Isometric Drawings. Lecture 6. Topics For Today. Using the Engineering Design Process More Freehand Sketching Isometric Sketches. Engineering Design Process. AS SHOWN IN TOOLS AND TACTICS FOR DESIGN DEFINING THE PROBLEM FORMULATING SOLUTIONS

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Design Process Isometric Drawings

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  1. Design Process Isometric Drawings Lecture 6 Autumn Quarter

  2. Topics For Today • Using the Engineering Design Process • More Freehand Sketching • Isometric Sketches Autumn Quarter

  3. Engineering Design Process • AS SHOWN IN TOOLS AND TACTICS FOR DESIGN • DEFINING THE PROBLEM • FORMULATING SOLUTIONS • DEVELOPING MODELS AND PROTOTYPES • PRESENTING AND IMPLEMENTING THE DESIGN • You will do 1 & 2 in Homework this week Autumn Quarter

  4. 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 Autumn Quarter

  5. Isometric Sketching – Example & Ellipses Goals • A process for creating isometric drawings • A process for sketching ellipses for isometric drawings Reference • Earle, Section 13.7 & 13.8 and Chapter 25 Autumn Quarter

  6. 60o 60o 30o 30o Isometric Axis Making an Isometric Sketch- Defining The Axis Autumn Quarter

  7. Height Width Depth Isometric Axis Convention Making an Isometric Sketch- Axis Convention Autumn Quarter

  8. Object for Practice How would you sketch this object? Autumn Quarter

  9. Front Face Height Width Blocking in the Object– Begin with Front Face Start with Isometric Axis Autumn Quarter

  10. Side Face Height Depth Blocking in the Object– Add Side Face Autumn Quarter

  11. Top Face Blocking in the Object– Add Top Face Autumn Quarter

  12. Adding Detail – Cut Outs – Part 1 Autumn Quarter

  13. Adding Detail – Cut Outs– Part 2 Autumn Quarter

  14. Adding Detail – Cut Outs– Part 3 Autumn Quarter

  15. Darken Final Lines Autumn Quarter

  16. Isometric ellipses • In an isometric drawing, the object is viewed at an angle, which makes circles appear as ellipses. • Holes • Cylinders Autumn Quarter

  17. Ellipses can be in any plane Autumn Quarter

  18. Sketching an Isometric of a Hollow Pipe Autumn Quarter

  19. Diameter Diameter Length Step 1 - Creating the Base Box Autumn Quarter

  20. - corner to corner to get center - lines to tangent points Tangent Points Lines to Tangent Points Step 2 – Ellipse on Front Face Autumn Quarter

  21. Sketch in Arcs Tangent Points Step 3 – Ellipse on Front Face Autumn Quarter

  22. Repeat for ellipse on rear face Draw Tangent Lines for Profile Complete Visible Part of Back Ellipse Step 4 – Finish Ellipse on Back Face, Profile Autumn Quarter

  23. Create Box for Hole Sketch Ellipse Step 5 – Ellipse for Hole on Front Face Autumn Quarter

  24. Isometric of Hollow Pipe Autumn Quarter

  25. 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 Autumn Quarter

  26. Center Line Visible Line Hidden Line Example Autumn Quarter

  27. 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 Autumn Quarter

  28. Example Application of Precedence Autumn Quarter

  29. 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 Autumn Quarter

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