Auxiliary Views
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Auxiliary Views Used to show the true shape and size of inclined surfaces
Auxiliary Views We have already seen how the principle views of an object can be represented when using the glass box approach to surface identification. However, this object has a surface that is not parallel to any side of the glass box. How can we represent that surface in its true shape and size?
Auxiliary Views
Here, surface ABCD is shown in all 3 views. In which view is it true shape and size?
Auxiliary Views
None. An auxiliary view is required.
Auxiliary Views We can also use the glass box technique by adding another plane and project this surface onto it. By doing so, we can show the slanted surface’s true shape and size. NOTE: The new glass plane is parallel to the surface it describes just like the other glass projection planes.
Auxiliary Views Just the way we unfold the glass box to expose all of the principle views…..
Auxiliary Views …we can unfold the projection plane that is parallel to the slanted surface we wish to show as true shape and size.
Auxiliary Views An auxiliary view is a view obtained by a projection on any plane other than the horizontal, frontal and profile projection planes. We see that the new auxiliary view will be projected from the front view where the surface appears as an edge. Here’s why we do this…….
Auxiliary Views Between each view are imaginary lines that represent the edge view of the planes of projection. You can consider these “fold lines”. Fold lines represent the hinge lines joining the planes. These planes allows us to use the character-istics of the lines that make up each view. For example…..
Auxiliary Views Rule #1:
If a line is parallel to the Plane of Projection (PP), it will always be true length in the adjacent view. You see that Line AD in the TOP view is parallel to PP H. It is also parallel to PP P in the RIGHT SIDE view. Therefore, it will show its true length in the FRONT view.
Auxiliary Views Rule #2:
If a line appears as a point in any view, it will be true length in the adjacent view. You can see that line DC appears as a point in the FRONT view. Therefore, it is true length in both the TOP and RIGHT SIDE views.
Auxiliary Views Two Kinds of Auxiliary Views Partial Auxiliary View – An auxiliary view that shows only the true size and shape of the inclined surface. Full Auxiliary View – An auxiliary view that shows all the other features of the object projected onto the auxiliary plane.
Auxiliary Views Full Auxiliary View – An auxiliary view that shows all the other features of the object projected onto the auxiliary plane.
Auxiliary Views Partial Auxiliary View – An auxiliary view that shows only the true size and shape of the inclined surface.
Auxiliary Views We have already seen how the principle views of an object can be represented when using the glass box approach to surface identification. However, this object has a surface that is not parallel to any side of the glass box. How can we represent that surface in its true shape and size?
Auxiliary Views
Here, surface ABCD is shown in all 3 views. In which view is it true shape and size?
Auxiliary Views
None. An auxiliary view is required.
Auxiliary Views We can also use the glass box technique by adding another plane and project this surface onto it. By doing so, we can show the slanted surface’s true shape and size. NOTE: The new glass plane is parallel to the surface it describes just like the other glass projection planes.
Auxiliary Views Just the way we unfold the glass box to expose all of the principle views…..
Auxiliary Views …we can unfold the projection plane that is parallel to the slanted surface we wish to show as true shape and size.
Auxiliary Views An auxiliary view is a view obtained by a projection on any plane other than the horizontal, frontal and profile projection planes. We see that the new auxiliary view will be projected from the front view where the surface appears as an edge. Here’s why we do this…….
Auxiliary Views Between each view are imaginary lines that represent the edge view of the planes of projection. You can consider these “fold lines”. Fold lines represent the hinge lines joining the planes. These planes allows us to use the character-istics of the lines that make up each view. For example…..
Auxiliary Views Rule #1:
If a line is parallel to the Plane of Projection (PP), it will always be true length in the adjacent view. You see that Line AD in the TOP view is parallel to PP H. It is also parallel to PP P in the RIGHT SIDE view. Therefore, it will show its true length in the FRONT view.
Auxiliary Views Rule #2:
If a line appears as a point in any view, it will be true length in the adjacent view. You can see that line DC appears as a point in the FRONT view. Therefore, it is true length in both the TOP and RIGHT SIDE views.
Auxiliary Views Two Kinds of Auxiliary Views Partial Auxiliary View – An auxiliary view that shows only the true size and shape of the inclined surface. Full Auxiliary View – An auxiliary view that shows all the other features of the object projected onto the auxiliary plane.
Auxiliary Views Full Auxiliary View – An auxiliary view that shows all the other features of the object projected onto the auxiliary plane.
Auxiliary Views Partial Auxiliary View – An auxiliary view that shows only the true size and shape of the inclined surface.
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