Definitions Flashcards
A chamfer of 2mm thick and angle 45˚ inclination is dimensioned as
2 x 45°
Circular shapes appear ? when viewed at an angle other than 90 degrees
Elliptical
What are the three types of Lines
Dimension Line
Extension Line
Leader Line
What is the diameter symbol
Ø
A pictoral view can be oblique, define it
In oblique views, one face of the object is shown in its true size and shape, while the other faces are receding at an angle. This creates a skewed perspective.
Define an isometric drawing
in an isometric drawing of a cube, all of the parallel edges of the cube are projected as parallel lines, the horizontal edges are drawn at an angle (usually 30°) from the normal horizontal axes, and the vertical edges, which are parallel to the principal axes, appear in their true proportions.
define pictoral view: perspective
Perspective drawing is a drawing technique that allows the artist to project three-dimensional objects as a human would actually see them. This method always includes lines converging into one or up to six vanishing points.
what are the two types of oblique views
Cavalier and Cabinet
Define Cavalier projection
In a cavalier projection, the depth or receding lines are true length and at 45 degrees without any reduction in size.
This creates a more accurate representation of the object’s proportions but can result in a distorted appearance due to the lack of foreshortening.
Define Cabinet view
In cabinet projection, the receding lines are foreshortened by half.
This leads to a more realistic representation by accounting for the way our eyes naturally perceive depth. Used in technical drawings and illustrations to balance accuracy and visual appeal.
A screw thread has 12mm diameter and 1.3mm pitch between thread crests. How would you label this?
M12 x 1.3.
What should a typical part list include
part number, manufacturing material, number of parts
Why would you use an auxiliary view
The principle reason for using an auxiliary view is to create a true projection plane from an inclined plane in one of the primary views
Why are sections used
Are used to clarify the interior construction of a part that can not be clearly described by hidden lines in exterior views
What is AS1100
is the drawing standard that is used within Australia. It defines every aspect of the drawing. IF followed by companies, it allows for a clarity, understanding and uniformity across all drawings generated nation wide.
