Blueprint Reading for the Machine Trades, Sixth Edition Unit 5: Orthographic Projection of Inclined Planes. Russ Schultz and Larry Smith PowerPoint presentation created by LaVonne Vichlach. Foreshortened Views. Inclined angles are at right angles to two of six principal views

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Russ Schultz and Larry Smith PowerPoint presentation created by LaVonne Vichlach

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Foreshortened Views • Inclined angles are at right angles to two of six principal views • Appears as an edge on those two views • Remaining views are foreshortened

Foreshortened Views • Plane a appears as edge in top and bottom views • Foreshortened in other four-twice visible and twice hidden • Always study adjacent views to determine true shape

Foreshortened Views • Line “E” is created by the edge of principal plane “V” • Both surfaces in the right hand view represent the true shape

Foreshortened Views • Line “I” is created by the intersection of inclined plane “W” and the principal plane “X” • The right hand view represents one foreshortened and one true shape

Foreshortened Views • No line is created when curved surface “Y” runs tangent with the principal plane “Z” • Combines foreshortening and true shape

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #1. T

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #2. E

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #3. T

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #4. E

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #5. E

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #6. T

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #7. E

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #8. T

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #9. T

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #10. T

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #11. F

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #12. I

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #13. E

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #14. T

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #15. E

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #16. I

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #17. F

Surface Identification 4 E: Edge view of surface I: Intersection of surfaces F: Foreshortened surface T: True shape Identify the condition for circle #18. T

Surface Identification 5 L Enter the letters into the balloons. J H L B A D G F J D E A L K M C N

Surface Identification 6 Place the letters from the pictorial views onto their respective surfaces in the orthographic views.

Surface Identification 6 Place the letters from the pictorial views onto their respective surfaces in the orthographic views. A B B D C

Surface Identification 6 Place the letters from the pictorial views onto their respective surfaces in the orthographic views. B D E D A C

Surface Identification 6 Place the letters from the pictorial views onto their respective surfaces in the orthographic views. B C C A D

Surface Identification 6 Place the letters from the pictorial views onto their respective surfaces in the orthographic views. F A D E H C B G

Surface Identification 6 Place the letters from the pictorial views onto their respective surfaces in the orthographic views. C A C B D E F

Surface Identification 6 Place the letters from the pictorial views onto their respective surfaces in the orthographic views. E B C D A B

Surface Identification 6 Place the letters from the pictorial views onto their respective surfaces in the orthographic views. B A B D E E C

Angular Dimensions • Inclined planes dimensioned two ways • Coordinate method • Angular method • Angular method uses one linear and one angular dimension-allows variation to increase with distance from vertex • Coordinate controls accuracy more than angular

Angular Dimensions • Most angular dimensions held from vertical or horizontal centerline • Easy to calculate other angle from 90 • All triangles have 180

Angular Dimensions • Right triangle always has 90 angle • Other two angles add up to 90 • 180 total in triangle

Angular Dimensions • Isosceles triangle has 2 sides equal • Two angles are also equal

Angular Dimensions • Equilateral triangle has three equal sides • Also has three equal angles