|
auxiliary view |
A view drawn at a right angle to an angled
feature of the part. Auxiliary views best illustrate angled
surfaces. |
|
blueprint |
A document containing all the instructions
necessary to manufacture a part. The key sections of a blueprint are
the drawing, dimensions, and notes. |
|
break line |
A line used to define the boundary of an
imaginary broken-out section or to shorten dimensions that are
excessively long. Break lines are wavy and irregular. |
|
broken-out section |
A section view resulting from an imagined
cut that removes a small portion of the part exterior. |
|
center line |
A line used to define the center of a
symmetrical part. Center lines consist of alternating long and short
dashes. |
|
change block |
The area of the blueprint indicating any
changes or revisions made to the part drawing or dimensions. |
|
cutting plane |
A line used to define the location of the
imaginary cut that creates the matching section view. Cutting plane
lines consist of two short dashes alternating with a longer dash. |
|
dimension |
The desired measurement of a feature on a
part. |
|
dimension line |
A line used to define the measurement of a
part feature. Dimension lines consist of a solid line with arrows at
both ends and a dimension in the center. |
|
drawing |
The collection of lines illustrating the
shape and features of a part. |
|
extension line |
A line used to visually connect the ends
of a dimension line to the relevant feature on the part. Extension
lines are solid and are drawn perpendicular to the dimension line. |
|
full
section |
A section view resulting from an imagined
cut down the entire length of the part. |
|
half
section |
A section view resulting from an imagined
cut that removes only a portion of the part length. |
|
hidden line |
A line used to define a part feature that
is not visible in a specific view. Hidden lines consist of a series
of short dashes. |
|
leader line |
A thin line with an arrow head that is
often positioned at an angle and is used to tie a dimension to a
feature, especially when there are space limitations. |
|
note
|
An additional instruction or general
comment added to a blueprint. Notes contain information about the
material, finish, tooling, tolerances, etc. |
|
object line |
A line used to define the shape and size
of a part feature. Object lines are solid. |
|
offset section |
A section view resulting from an imagined
cut that does not follow a straight line. Offset sections are used
to include features that do not reside on a straight line. |
|
orthographic drawing |
A drawing that communicates the shape and
size of an object through a series of related two-dimensional views. |
|
reference dimension |
A dimension that is not crucial for the
effective use of the part. Reference dimensions are not inspected. |
|
repetitive dimension |
A dimension that is marked to indicate the
number of locations for the particular measurement. |
|
revolved section
|
A section view resulting from an imagined
cut that removes and rotates a wafer taken from the middle of a part
feature. |
|
scale
|
The area of the blueprint indicating the
relationship between the drawing size and the actual part size. |
|
section line |
A line used to identify the imagined cut
portion of a part in a section view. Section lines appear as a
series of diagonal lines drawn close together. |
|
section view |
A view illustrating a rotated section
resulting from an imagined cut in the part. Blueprints may contain a
variety of different section views. |
|
title block |
The area of the blueprint containing
company name, address, part number, etc. Title blocks are unique to
each manufacturer. |
|
tolerance |
The acceptable variation from a specified
dimension. |
|
typical dimension |
A dimension that is assumed to be the same
for similar features of the part. |
