Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
32 Cards in this Set
- Front
- Back
|
Name the line that shows where a measurement begins and ends
|
Dimension line
|
|
|
The dimensioning system in which the numerals are placed in line with the dimensions lines is called the _____ system
|
aligned dimensioning
|
|
|
Angles may be dimensioned by degrees, minutes, and seconds or by _________ angles
|
decimal
|
|
|
Diameter
|
O with slash/line through it
|
|
|
Inch
|
IN or "
|
|
|
Centerline
|
CL
|
|
|
Millimeter
|
MM
|
|
|
Radius
|
R
|
|
|
Tolerance
|
TOL
|
|
|
Outside diameter
|
OD
|
|
|
Countersink
|
CSK
V |
|
|
The amounty by which the accuracy of a part may vary from the absolute measurement is called_______
|
tolerance
|
|
|
Explain the differences between datum feature and a simulated datum.
|
simulates mating parts in assembly
|
|
|
The dimesnion ".500 drill" would be more accurately shown as______.
|
o .50
|
|
|
On machine drawings, dimesnions should be given in ______ inches or in ______ ( metric sizes)
|
decimal .. mm
|
|
|
When a hole is to be made in a piece after assembly with its mating piece, the words ______ are added to the note.
|
at assembly
|
|
|
Aligned system
|
a system of dimensioning in which the dimensions are placed in line with the dimension lines.
|
|
|
assembly drawing
|
a drawing, usually three-dimensional, in which allthe parts of a machine are shown together in their relative positions
|
|
|
basic hole system
|
a system of specifying dimensions and tolerances of close-fitting cylindrical parts in which the design size of the hole is the basic size and the allowance is applied to the shaft
|
|
|
basic shaft system
|
a system of specifying dimensions and tolerances of close-fitting cylindrical parts in which the design size of the shaft is the basic size and the allowance is applied to the hole.
|
|
|
bilateral tolerances
|
a tolerance that allows variations in both directions from a design size. bilateral variations are usually given with locating dimensions and with any other dimensions that can vary in either direction
|
|
|
datums
|
a point, line, or surface that is assumed to be exact, and from which other dimensions can be computed or located.
|
|
|
dual dimensioning system
|
a dimensioning system in which the size description is given in both decimal inches and millimeters
|
|
|
finish mark
|
a surface texture symbol which shows that a surface is to be machined, or finished
|
|
|
tolerance
|
the amount by which a machined part is allowed to vary from absolute measurements
|
|
|
unidirectional system
|
a system of dimensioning in which all the dimensions read from the bottom of the sheet, no matter where they appear on the drawing
|
|
|
unilateral tolerance
|
a tolerance that allows variation on only one side of teh design size of a part
|
|
|
another name for dimension is
|
size description
|
|
|
the exact position of a specific detail on a drawing is given by a _______ dimension
|
.
|
|
|
a point on a part that is assumed to be exact is an.
|
.
|
|
|
a _______ dimensioning system is sometimes used in industries involved in international trade
|
dual?
|
|
|
to modify the standard dimension in autocad, the _______ command is used
|
DIMSTYLE
|
