1. Create auxiliary views of
inclined planes. pp. 343-346
2. Use reference planes and
fold lines when creating auxiliary views. p. 340
3. Explain auxiliary view
projection theory. p. 340
4. Define primary, secondary,
and tertiary auxiliary views. pp. 342-343
5. Define width, height, and
depth auxiliary views. p. 343
6. Create successive
auxiliary views. p. 352
7. Solve
dihedral angle problems. p. 351
8. Create a
partial auxiliary view. p. 347
9. Plot
curves in auxiliary views. p. 347
10. Use
auxiliary views for reverse construction. p. 350
11. Create a
view in a specified direction using auxiliary views. p. 350
12. Understand
the difference between 2-D methods and 3-D CAD in creating auxiliary views. p. 348
1. Define auxiliary views.
An orthographic view that is projected onto a plane
other than one of the six principal planes of projection. This technique is used to show inclined and
oblique surfaces and features in their true size and shape. p312
2. Define primary, secondary, and tertiary
auxiliary views.
An auxiliary view is created by defining a new line
of sight relative to the object. This
creates the possibility of a series of successive views, each defined with a
line of sight relative to the last view.
The first view created in this manner is the primary auxiliary view, the
next, the secondary view, and so on. p315
3. Define width, height, and depth auxiliary
views.
Views are also named by the primary dimension taken
from the measuring view, perpendicular to the fold or reference line. p316-318
4. Explain how to find a view in a specified
direction.
The point of view of the line of sight must be
found. This done by first creating an
auxiliary view with a fold line parallel to the projected oblique line of sight
in one of the views. A secondary
auxiliary view is then created with a fold line perpendicular to the line of
sight. This creates a point view of the
line of sight and the desired view of the object. p323
5. What is a partial auxiliary view?
When only the details of the inclined (or oblique)
surface are projected and drawn in the auxiliary view, the view is called a
partial auxiliary view. p320
6. List the five applications for auxiliary
views.
Reverse construction, true length of a line, point
view of a line, edge view of a line, and true size of a plane. p322-323
7. Describe how to find the true angular
measurement for a dihedral angle.
The
point view of the line of intersection between the two planes creating the
angle must be found. The steps described
in question 4 are then taken to create the secondary auxiliary view. p324
没有评论:
发表评论