auxiliary views part 1

8/13/2019 Auxiliary Views Part 1

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Fall2005- ENGR 3200U 1

Auxiliary Views Part 1


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Projection Theory and

Inclined/Oblique Planes

No True Size


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Auxiliary View

Auxiliary view

is an

orthographic

view that is

projected onto

any plane other

than on of the

six principle

views

Auxiliary views are created by positioning a new line

of sight relative to the object


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Fold-Line Method

Glass box and six principle views


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Fold-Line Method

Glass box with special

auxiliary view


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Fold-Line Method

Phantom lines

between the views is

called fold lines


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Fold-Line Method

Changing the position of object in the glass box


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Reference Plane Method

This single plane is then used

to take the measurements to

create the auxiliary view

Reference Plane method is a

technique that locates a planerelative to the object, instead

of suspending the object in

the glass box


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Reference

Plane Method

Transferring the

distance from the

normal views to

the auxiliary view

Reference Plane can

be positioned

anywhere relative tothe object


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Reference

Plane Method

1- Reference plane or the fold line is always drawn perpendicular

to the projection lines

2- Transfer measurements are always taken perpendicular to the

reference or the fold line

3-Refrence planes always appear on edge in the views adjacent

to the central view but never in two adjacent views

4-Distances from the object to the reference or fold lines in the

auxiliary view and the measuring view are same

Remember the Following:

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Auxiliary View Classification

It is possible to create any number of successive auxiliary views,

including a new AV from an existing AV.

Auxiliary Views (AVs) are created by positioning a

new line of sight relative to the object

Therefore AVs are classified as:

1- Primary2-Secondary

3-Tertiary

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Primary Auxiliary View is a single view projected from one of thesix principle views

Secondary Auxiliary View is a single view projected from aprimary auxiliary views

Tertiary Auxiliary View is a single view projected from a

secondary or another tertiary auxiliary view

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1) Depth Auxiliary View

(Projected from the front view)

Auxiliary Views are also classified by the space

dimension shown in the true size

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2) Height Auxiliary View

(Projected from the top view)



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2) Width Auxiliary View

(Projected from the profile view)

Labelling Convention


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Labelling ConventionLabels normally describe the nature of the fold line or the reference plane

Based on the views name



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Or based on the projection plane

Partial Auxiliary View


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Partial Auxiliary View

When only the feature of interest is drawn in anauxiliary view and not the whole object , the view is

called a partial auxiliary view

auxiliary views part 1

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