Chapter 8: Multivew
If a surface with a hole in it is slanted 30°, then the angle of ellipse in the adjacent view is ____.
30°
What happens when there is a view which cannot be dimensioned clearly?
A view enlargement is used.
Orthographic Projection
Any projection of the features of an object onto an imaginary plane.
Chamfer
Cutting away of the sharp external or internal corner of an edge.
Removed Views
Establishes by placing viewing planes lines where the view is taken.
Multiview Projection
Establishes view of an object projected on two or more planes of projection.
A drawing with a single view is always an inadequate way to describe an object. True or false?
False
Always use three views to adequately describe an object. True or false?
False
____is used when an object has a uniform shape and thickness, more than one view is normally necessary.
One-view drawings
______is any projection of the features of an object onto an imaginary plane called a plane of projection and a projection of the features of an object which is made by lines of sight that are perpendicular to the plane of projection.
Orthographic projection
Third Angle Projection
Principal multiview projection used in the US.
Multiview Drawing
Represents the shape of an object using two or more views.
Pictoral
Shows an object represented by a 3D drawing.
Runouts
The characteristics of the intersecting features.
Break Corner
The slight relief of a sharp corner.
A hole through a slanted surface in the front view appears as an ellipse in the side view from which the slanted surface is projected. True or false?
True
A multiview drawing represents the shape of an object using two or more views, but using one view is an option for some objects. True or false?
True
If possible in a multiview drawing, all surfaces should be shown true size. True or false?
True
When a surface of an object is parallel to the plane of projection the surface appears in its true size and shape on the plane of projection. True or false?
True
Detail View
Used when a part of a view has a detail that cannot be clearly dimensioned due to the drawing scale or complexity.
True Geometry View
View that shows the actual shape of the object.
Partial View
When symmetrical object are drawn in limited space or when there is a desire to simply complex views.
When the line of sight in a multview is perpendicular to a hole, the hole appears as a _____.
ellipse
In situations where the plane of projection is not parallel to the surface of the object, the resulting orthographic view is ____.
foreshortened
Fold/Reference Lines
Hinge lines.
Depth dimensions are the same between top views and side views. True or false?
True
A____is used as a slight angle relieve a sharp edge or to assist the entry of a pin or thread into the mating feature.
chamfer
An outside or inside slightly rounded corner of an object is represented in multiview as a ____only.
contour
_____should be kept to a minimum in front views and should not be shown in partial views.
hidden lines
When the line of sight in a multiview is perpendicular to a hole, the hole appears ____.
round
If you have the depth dimensions and height dimensions of an object that you are going to draw in a third-angle projection, which views of the multiview drawing can you create?
the right side view
When drawing a circle which appears in a multiview on a slanted surface, the angle of ellipse is ____.
the size that matches the degree slant of the surface
The depth of an object shown in a multiview drawing is common between ____.
the top view and the right side view
A______is used primarily when a detail that needs to be dimensioned is too small to show the dimensions clearly and has a thick phantom line circle around the area to be enlarged with a detail view identification letter.
view enlargment
If a centerline, a hidden line, and an visible line all occur at the same space in a multiview drawing, which line takes precedence?
visible line
