Lecture Autodesk inventor Finding an auxiliary view

For some objects, an auxiliary view must be created before a principal view can be drawn, using a technique called reverse construction. Auxiliary views can be used to draw a view in a specified direction. To create a view of an object in a specified direction, find the point view of the line of sight.

Finding an Auxiliary View

Finding an Auxiliary View

Given: A multiview set of an object with an

inclined surface Find: An auxiliary view showing the true size

and shape of the inclined surface

Step 1

Draw a reference line parallel to the edge view of the inclined surface to be projected

Step 2

Draw perpendicular projection lines from the inclined surface

Step 3

Draw a second reference line at a “convenient” location between the view being projected from and an adjacent principal view

Step 4

Label the vertices of the inclined surface in the adjacent view

Transfer the vertex labels to the edge view

Step 5

Measure, then transfer the vertex distances from the principal-principal reference line (H-F) in the adjacent view to the principal-auxiliary (F-1)

reference line

Step 6

Label the vertices in the auxiliary view, then connect the vertices This view gives the true size and shape of the inclined surface

Finding an Auxiliary View

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