1. Axonometric & Oblique Drawings
Chapter 11
Axonometric & Oblique Drawings
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2. Pictorial Drawings Show several faces of an object at once
Uses? Selling- Sales Literature Manufacturing- (CNC paths exported or CAM) Installation (IKEA step by step instructions) Maintenance- Maintenance manuals Design- Visualization to untrained eye
What is someone’s passion? (Add on Google)

3. Axonometric Projection: Greek term Axon = Axis Greek term metric = measure Axonometric means: parallel projection around an axis or axes All 3 actual measurements are visible in one view Width, height, depth

4. 4 projection types:

5. Isometric vs. Non-isometric lines/ planes
True length/ size & shape represented

6. Sketch This in Isometric View
Isometric Planes vs.
Non-Isometric Planes
Exercise
Sketch This in Isometric View

7. Classified by angles between the lines comprising the axonometric axes
Up to this point we have used Axonometric synonymously with Isometric, but there are actually three division of Axonometric projections
Classified by angles between the lines comprising the axonometric axes

8. Dimetric Drawing- Angle between 2 axes same for 2 Surfaces
Other Surface is Foreshortened

9. Angle between 2 axes different for all Surfaces
Trimetric Drawing-
Angle between 2 axes different for all Surfaces

10. Isometric Drawing- Angle between all axes equal
No Surface has more emphasis than any other

11. Steps involved in rotating about 2 axes to get
Isometric Projection

12. Isometric Plane- contains isometric lines
(any line parallel to one of legs of isometric axes)
Rotation about 2 axis results in foreshortened projection of lines and faces and therefore we must increase the projection by approximately 20% to get full scale

13. Standards for Isometric Drawings:
Hidden lines omitted unless absolutely necessary to completely describe part and not show in multi-view projection
(where only isometric is being shown)
Centerlines omitted unless showing symmetry or for dimensioning

14. Section Views in Isometric Drawings:
Only used when necessary to clearly define internal features
2 Types
__________ and ____________

15. Oblique Drawing- 3D Axonometric representation
Where front is show in true size and shape
Common for Illustration purposes for furniture

16. Oblique Drawing and scales: 3 Types:
Cavalier- Full scale in height and depth
Cabinet- Half scale in depth, full scale in height
General- >half & < full scale in depth, full in height

17. Oblique Rules: Longest Dimension parallel to frontal plane
Cylinder Rule- Overrides dimensional rule for clarity

18. Dimensioning Oblique Drawings:
Where only oblique drawing is given for illustration purposes
Everything on frontal plan and limited dimensions in profile plane
Dimension only in true shape or Cavalier projection

19. 3 Classifications of Axonometric
Summary:
3 classifications of Pictorials
Axonometric
Oblique
Perspective
3 Classifications of Axonometric
Isometric
Dimetric
Trimetric
If you do not create your part on the right plane and you have to rotate it to where it is close to isometric view what are you really portraying?

20. Homework Figure (66) Create a solid model of the part in solid works and place in one of the axonometric projections that show the most detail