Sketches Drawing And Prints - Part A Flashcards
The six different planes of orthographic projection
- Front
- Right side
- Left side
- Top (plan)
- Bottom
- Rear
What view is is considered the key view of orthographic projection
The front view
The 2 types of orthographic projection drawings are
1st angle and 3rd angle projection
What Angle of orthographic projection is rare in North America
1st Angle
What type of orthographic projection is most common in North America
3rd angle
3rd angle orthographic projection can be shown by what is sometimes called the
Glass box theory, look into the windows of the box, what you see is drawn directly on that face
CW means what
Clockwise
CCW means what
Counter clockwise
1st angle orthographic projection can be described with
A dice rolling, what number you see is the side you draw
How many views of an object does one need to fully understand the objects shape
3 views of an object I required
What does ISO Stand for
International organization for standardization
3 types of pictorial views are
- perspective
- oblique
- isometric
What type of pictorial view is used in mechanical trades
Isometric
The object or visible line is the most important line On a print and should be drawn as
A thick dark line
A center line shows the center of objects or features and is drawn as
A thin broken line made up of alternating long and short dashes
—-—-—-—-—
A hidden line is drawn as
A series of medium dark short dashes
What is a dimension line used for
The placement of dimensions
What line has an arrow on each end to indicate the distance being dimensions
Dimension line
Extension lines are used along with dimension lines and show what
They extend the information further from the drawing for clearer information
What is a leader line
A thin line that leads you to information and terminates with an arrow, a dot or a tilde
Cutting plane lines are
Thick, dark lines, either broken or continuous with arrows at right angles on each end
Cutting plane lines indicate
Where a sectional view was taken
Phantom lines are drawn
Thick broken line made up of a long dash followed by two short dashes.
— – — –
Text on drawings should be in
Upper case Gothic (can be italized)
BC
Bolt Circle
BHC
Bolt Hole Circle
BCD
Bolt Circle Diameter
C to C
Centre to centre
CTRS
Centres
D or O or DIA
Diameter
TYP
Typical
What is an arc
Segment of a circle and is dimensioned by the radius
An internal radius is called a
Fillet
A fillet increases the work pieces ______
Strength
An external radius is called a
Round
What’s the purpose of a round
Aids in safety, removes sharp edges
CBORE
Counter bore
A counter bore is made to accommodate what
The head of a screw or bolt
CSK
Counter Sink
A counter sunk hole is used to
Keep the screw flush with the work piece
SFACE
Spot face
Spot face provides
A flat seat for the head of a bolt or a washer
CH or CHAM
Chamfers
A chamfer is a
Slight angle to relive a sharp edge
(3) types of keys
Woodruff
Square
Rectangular
Anti friction bearings have some type of _______ _______ between the inner and outer ring
Rolling element
Plain bearings are basically a
Sleeve or liner placed between a moving shaft and a housing to eliminate wear between these parts
