NO, RICHARDS! CADD STUDENTS MUST NEVER LEARN THE TRUTH ABOUT AAUXILIARY UXILIARY VVIEWS!IEWS!

FORGET IT DOOM! THEY WILL LEARN….EVEN IF I HAVE TO TEACH IT TOTHEM MYSELF!!

THEY MUST LEARN WHY AUXILIARY VIEWS ARE USED. THE FATE OF THEIR GRADES MAY DEPEND UPON IT!!

WILL DR. DOOM SUCCEED IN KEEPING YOU FROM LEARNING THE TRUTH??

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

HOLE APPEARS ELIPTICAL

RADII APPEAR ELIPTICAL

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

ObjectivesObjectives• X

• X

TRUE RADIUS

TRUE HOLE DIAMETER

Auxiliary ViewsAuxiliary 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.

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 VIEWSAUXILIARY 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.

AUXILIARY VIEWSAUXILIARY VIEWS

AUXILIARY VIEWo90

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.

PARTIAL AUXILIARY VIEWSPARTIAL AUXILIARY VIEWS

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

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

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

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

AUXILIARY SECTION VIEWSAUXILIARY SECTION VIEWS

SECONDARY SECONDARY AUXILIARY AUXILIARY

DEPTHDEPTH AUXILIARY AUXILIARY

VIEWVIEW

HEIGHTHEIGHT AUXILIARY AUXILIARY

VIEW VIEW

WIDTHWIDTH AUXILIARYAUXILIARY

VIEW VIEW

The Unit Organizer

LAST UNIT/ Experience

Section ViewsCURRENT UNIT

PRODUCE AUXILIARY VIEW DRAWINGSNEXT UNIT/ Experience

Threads and Fasteners

Drawing Auxiliary Views

Techniques used on Working Detail DrawingsThe 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?U

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Is about…

Requires that you know the…

When are they needed…

How they are constructed…

Terms & Vocabulary

Techniques used in Auxiliary projection

The Unit Organizer

LAST UNIT/ Experience

Section ViewsCURRENT UNIT

PRODUCE AUXILIARY VIEW DRAWINGSNEXT UNIT/ Experience

Threads and Fasteners

Drawing Auxiliary Views

Techniques used on Working Detail DrawingsThe 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?U

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RELATION

SHIPS

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

The Unit Organizer

LAST UNIT/ Experience

Section ViewsCURRENT UNIT

PRODUCE AUXILIARY VIEW DRAWINGSNEXT UNIT/ Experience

Threads and Fasteners

Drawing Auxiliary Views

Techniques used on Working Detail DrawingsThe 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?U

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SEL

F-TE

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RELATION

SHIPS

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

The Unit OrganizerLAST UNIT/ Experience

Section ViewsCURRENT UNIT

PRODUCE AUXILIARY VIEW DRAWINGSNEXT 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?U

NIT

SEL

F-TE

ST

QU

ESTI

ON

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RELATION

SHIPS

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

The Unit OrganizerLAST UNIT/ Experience

Section ViewsCURRENT UNIT

PRODUCE AUXILIARY VIEW DRAWINGSNEXT 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?U

NIT

SEL

F-TE

ST

QU

ESTI

ON

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NIT

RELATION

SHIPS

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

The Unit OrganizerLAST UNIT/ Experience

Section ViewsCURRENT UNIT

PRODUCE AUXILIARY VIEW DRAWINGSNEXT 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?U

NIT

SEL

F-TE

ST

QU

ESTI

ON

SU

NIT

RELATION

SHIPS

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

The Unit OrganizerLAST UNIT/ Experience

Section ViewsCURRENT UNIT

PRODUCE AUXILIARY VIEW DRAWINGSNEXT 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?U

NIT

SEL

F-TE

ST

QU

ESTI

ON

SU

NIT

RELATION

SHIPS

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

The Unit OrganizerLAST UNIT/ Experience

Section ViewsCURRENT UNIT

PRODUCE AUXILIARY VIEW DRAWINGSNEXT 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?U

NIT

SEL

F-TE

ST

QU

ESTI

ON

SU

NIT

RELATION

SHIPS

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)