1. A UXILIARY V IEWS! N O, R ICHARDS! C ADD STUDENTS MUST NEVER LEARN THE TRUTH ABOUT A UXILIARY V IEWS! F ORGET IT D OOM! T HEY WILL LEARN….EVEN IF I HAVE TO TEACH IT TOTHEM MYSELF!! T HEY MUST LEARN WHY AUXILIARY VIEWS ARE USED. T HE FATE OF THEIR GRADES MAY DEPEND UPON IT!! W ILL DR. DOOM SUCCEED IN KEEPING YOU FROM LEARNING THE TRUTH??

3. distorted All of the other pictures showed him stretching into a form that is distorted from his true-size or length.

4. HOLE APPEARS ELIPTICAL RADII APPEAR ELIPTICAL TRUE-LENGTH NCLINED ON A DETAIL DRAWING, THE TRUE-LENGTH OR SHAPE OF FEATURES ON AN INCLINED (OR ANGLED) SURFACE MAY, ALSO, APPEAR DISTORTED... AND CANNOT BE DETERMINED BY STANDARD MULTI-VIEW PROJECTION DRAWINGS AS SHOWN BELOW.

5. Objectives X X

6. TRUE RADIUS TRUE HOLE DIAMETER Auxiliary Views Auxiliary Views allow you to view the TRUE-LENGTH or shape of features on INCLINED surfaces by projecting the view perpendicular (90 degrees) to the inclined surface. NOW, BECAUSE OF CREATING THE AUXILIARY VIEW, THE HOLE AND THE RADIUS APPEAR AS THEY TRULY ARE.

7. A TYPICAL MULTI-VIEW DRAWING WILL NOT SHOW THE TRUE LENGTH AND SHAPE OF FEATURES BECAUSE THE SURFACE IS INCLINED (OR ANGLED). EVEN THE HOLES ARE DISTORTED TO LOOK LIKE ELLIPSES. AUXILIARY VIEWS HERE IS ANOTHER EXAMPLE. LOOK AT THE SPACING BETWEEN THE TWO HOLES IN THIS DRAWING. THE CENTER-TO-CENTER DISTANCE APPEARS CLOSER THAN IT ACTUALLY IS.

8. AUXILIARY VIEWS AUXILIARY VIEW o 90 ONCE AGAIN WE SHALL CREATE AN AUXILIARY VIEW SO THAT THE SPACING OF THE TWO HOLES IS AT ITS “TRUE-LENGTH” AND THE HOLES NO LONGER APPEAR AS ELIPSES.

10. PARTIAL AUXILIARY VIEWS

11. In this typical auxiliary view too much unnecessary detail is included, wasting time and effort, and making the drawing more difficult to read.

12. partial Using a partial auxiliary view the unnecessary background details are eliminated, simplifying the view and making the drawing easier to read.

13. AUXILIARY SECTION VIEWS

14. SECONDARY AUXILIARY

15. DEPTH AUXILIARY VIEW

16. HEIGHT AUXILIARY VIEW

17. WIDTH AUXILIARY VIEW

18. The Unit Organizer LAST UNIT/ Experience Section Views CURRENT UNIT PRODUCE AUXILIARY VIEW DRAWINGS NEXT UNIT/ Experience Threads and Fasteners Drawing Auxiliary Views Techniques used on Working Detail Drawings The Big Picture 1.Why do we need to show the true shape and size of inclined surfaces and features? 2.When would you use an auxiliary view on a drawing? 3.What is the difference between a primary and a secondary auxiliary view? 4.Why is accurate projection important to an auxiliary view? UNIT SELF-TEST QUESTIONS UNIT RELATIONSHIPS Is about… Requires that you know the… When are they needed… How they are constructed… Terms & Vocabulary Theory of Auxiliary projection Techniques used in Auxiliary projection

19. The Unit Organizer LAST UNIT/ Experience Section Views CURRENT UNIT PRODUCE AUXILIARY VIEW DRAWINGS NEXT UNIT/ Experience Threads and Fasteners Drawing Auxiliary Views Techniques used on Working Detail Drawings The Big Picture 1.Why do we need to show the true shape and size of inclined surfaces and features? 2.When would you use an auxiliary view on a drawing? 3.What is the difference between a primary and a secondary auxiliary view? 4.Why is accurate projection important to an auxiliary view? UNIT SELF-TEST QUESTIONS UNIT RELATIONSHIPS Is about… Requires that you know the… When are they needed… How they are constructed… Terms & Vocabulary Theory of Auxiliary projection Techniques used in Auxiliary projection

20. The Unit Organizer LAST UNIT/ Experience Section Views CURRENT UNIT PRODUCE AUXILIARY VIEW DRAWINGS NEXT UNIT/ Experience Threads and Fasteners Drawing Auxiliary Views Techniques used on Working Detail Drawings The Big Picture 1.Why do we need to show the true shape and size of inclined surfaces and features? 2.When would you use an auxiliary view on a drawing? 3.What is the difference between a primary and a secondary auxiliary view? 4.Why is accurate projection important to an auxiliary view? UNIT SELF-TEST QUESTIONS UNIT RELATIONSHIPS Is about… Requires that you know the… When are they needed… How they are constructed… Terms & Vocabulary Theory of Auxiliary projection Techniques used in Auxiliary projection

21. The Unit Organizer LAST UNIT/ Experience Section Views CURRENT UNIT PRODUCE AUXILIARY VIEW DRAWINGS NEXT UNIT/ Experience Threads and Fasteners Pre-Test Vocabulary Drawings Self-test questions Goal Assessment UNIT SCHEDULE Drawing Auxiliary Views Techniques used on Working Detail Drawings The Big Picture 1.Why do we need to show the true shape and size of inclined surfaces and features? 2.When would you use an auxiliary view on a drawing? 3.What is the difference between a primary and a secondary auxiliary view? 4.Why is accurate projection important to an auxiliary view? UNIT SELF-TEST QUESTIONS UNIT RELATIONSHIPS Is about… Requires that you know the… When are they needed… How they are constructed… Terms & Vocabulary Theory of Auxiliary projection Techniques used in Auxiliary projection

22. The Unit Organizer LAST UNIT/ Experience Section Views CURRENT UNIT PRODUCE AUXILIARY VIEW DRAWINGS NEXT UNIT/ Experience Threads and Fasteners Pre-Test Vocabulary Drawings Self-test questions Goal Assessment UNIT SCHEDULE Drawing Auxiliary Views Techniques used on Working Detail Drawings The Big Picture 1.Why do we need to show the true shape and size of inclined surfaces and features? 2.When would you use an auxiliary view on a drawing? 3.What is the difference between a primary and a secondary auxiliary view? 4.Why is accurate projection important to an auxiliary view? UNIT SELF-TEST QUESTIONS UNIT RELATIONSHIPS Is about… Requires that you know the… When are they needed… How they are constructed… Terms & Vocabulary Theory of Auxiliary projection Techniques used in Auxiliary projection True length Oblique surface Inclined surfaces Section auxiliary Partial auxiliary Reference plane

23. The Unit Organizer LAST UNIT/ Experience Section Views CURRENT UNIT PRODUCE AUXILIARY VIEW DRAWINGS NEXT UNIT/ Experience Threads and Fasteners Pre-Test Vocabulary Drawings Self-test questions Goal Assessment UNIT SCHEDULE Drawing Auxiliary Views Techniques used on Working Detail Drawings The Big Picture 1.Why do we need to show the true shape and size of inclined surfaces and features? 2.When would you use an auxiliary view on a drawing? 3.What is the difference between a primary and a secondary auxiliary view? 4.Why is accurate projection important to an auxiliary view? UNIT SELF-TEST QUESTIONS UNIT RELATIONSHIPS Is about… Requires that you know the… When are they needed… How they are constructed… Terms & Vocabulary Theory of Auxiliary projection Techniques used in Auxiliary projection True length Oblique surface Inclined surfaces Section auxiliary Partial auxiliary Reference plane Primary auxiliary view Secondary auxiliary view Depth auxiliary view Height auxiliary view Width auxiliary view

24. The Unit Organizer LAST UNIT/ Experience Section Views CURRENT UNIT PRODUCE AUXILIARY VIEW DRAWINGS NEXT UNIT/ Experience Threads and Fasteners Pre-Test Vocabulary Drawings Self-test questions Goal Assessment UNIT SCHEDULE Drawing Auxiliary Views Techniques used on Working Detail Drawings The Big Picture 1.Why do we need to show the true shape and size of inclined surfaces and features? 2.When would you use an auxiliary view on a drawing? 3.What is the difference between a primary and a secondary auxiliary view? 4.Why is accurate projection important to an auxiliary view? UNIT SELF-TEST QUESTIONS UNIT RELATIONSHIPS Is about… Requires that you know the… When are they needed… How they are constructed… Terms & Vocabulary Theory of Auxiliary projection Techniques used in Auxiliary projection True length Oblique surface Inclined surfaces Section auxiliary Partial auxiliary Reference plane Primary auxiliary view Secondary auxiliary view Depth auxiliary view Height auxiliary view Width auxiliary view Partial view Half view Auxiliary Section

25. The Unit Organizer LAST UNIT/ Experience Section Views CURRENT UNIT PRODUCE AUXILIARY VIEW DRAWINGS NEXT UNIT/ Experience Threads and Fasteners Pre-Test Vocabulary Drawings Self-test questions Goal Assessment UNIT SCHEDULE Drawing Auxiliary Views Techniques used on Working Detail Drawings The Big Picture 1.Why do we need to show the true shape and size of inclined surfaces and features? 2.When would you use an auxiliary view on a drawing? 3.What is the difference between a primary and a secondary auxiliary view? 4.Why is accurate projection important to an auxiliary view? UNIT SELF-TEST QUESTIONS UNIT RELATIONSHIPS Is about… Requires that you know the… When are they needed… How they are constructed… Terms & Vocabulary Theory of Auxiliary projection Techniques used in Auxiliary projection True length Oblique surface Inclined surfaces Section auxiliary Partial auxiliary Reference plane Primary auxiliary view Secondary auxiliary view Depth auxiliary view Height auxiliary view Width auxiliary view Partial view Half view Auxiliary Section Using reference plane/line Direction of sight (orthographic principle)