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Given This! . Draw this! . Types of Axonometric Projection. Isometric
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1. Chapter 14 Axonometric Projection (Pictorial Drawing)
2. Given This!
3. Draw this!
4. Types of Axonometric Projection Isometric has equal foreshortening along each of the three axis directions
Dimetric has equal foreshortening along two axis directions and a different amount on the third axis
Trimetric has different foreshortening along all three axis directions
5. Types of Axonometric Projection
6. Isometric Projection The projections of the edges of a cube in isometric projection make angles of 120 degrees with each other
7. Isometric Projection Lines of an isometric drawing that are not parallel to the isometric axes are called nonisometric lines
These lines are not equally foreshortened
8. Isometric Projection Isometric scales can be used to draw correct isometric projections
All distances are approximately 80% of true size
9. Isometric Drawings Isometric drawings, unlike isometric projections, are drawn using the full length measurements of the actual drawing and lacks foreshortening
The isometric drawing is about 25% larger than the isometric projection
10. Iso Paper
11. Making an Isometric Drawing
12. Sketch an Isometric Drawing
13. Iso Paper
14. SOLUTION
15. Sketch an Isometric Drawing
16. Iso Paper
17. SOLUTION
18. Hidden Lines and Centerlines Hidden lines are omitted unless they are needed to make the drawing clear
Center lines are shown if they are needed to indicate symmetry or if they are needed for dimensioning
19. Angles in Isometric Angles project true size only when the plane containing the angle is parallel to the plane of projection
An angle may project to appear larger or smaller than the true angle depending on its position
20. Circles in Isometric If a circle lies in a plane that is not parallel to the plane of projection, the circle projects as an ellipse
Ellipses can be constructed using offset measurements
21. Ellipses in Isometric Approximate ellipses can be constructed from arcs
22. Drawing Ellipses
23. Drawing Isometric Cylinders
24. Irregular Objects
25. Irregular Objects
26. Curves in Isometric
27. Screw Threads in Isometric Parallel partial ellipses equally spaced at the symbolic thread pitch can be used to represent screw threads
28. Arcs in Isometric
29. Intersections
30. Spheres in Isometric
31. Isometric Sectioning Isometric sectioning is useful in drawing open or irregularly shaped objects
32. Isometric Dimensioning Isometric dimensions are similar to dimensions on multiview drawings but should match the pictorial style
33. Exploded Assemblies
34. Piping Diagrams
35. Sketch an Isometric Drawing
36. Iso Paper
37. Solution
38. Sketch an Isometric Drawing
39. Iso Paper
40. Solution