Basic Drafting Section 2-4; Pg 17-42 Flashcards
How many views are usually in an orthographic projection. Label them and where to find them.
Three views: Top, Front, and Right Side.
Top view belongs on the top
Front view belongs on the bottom left
Right Side view belongs on the bottom right
In orthographic projection, what view/ face shows the most detail of that part?
The front view usually shows the most detail of the part, and the other two views are based on the front view.
In an orthographic projection, it in noted the lines in one view will have what in common with the other views?
Every line will have a corresponding line with the others.
What is an “Isometric Circle?”
An Isometric Circle, also known as an ellipses, is a circle (Duh). But considering the word isometric, the said circle is warped based on how the image is drawn, think of perspective. The once circle is now laid slanted and is now transformed into an ellipses.
How many steps are used in producing an isometric drawing?
Four steps.
What method is most preferred for converting inches to millimetres?
The Conversion Chart Method.
What method is most widely used for dimensioning?
Conventional Dimensioning Method.
Describe the Conventional Dimensioning Method.
Conventional Dimensioning is when the blueprint has several overall measurements apposed to reference dimensions. Reference dimensions can then be found by adding or subtracting other dimensions.
It is common practice on shop drawings to include a note that all metric dimensions are in what?
Millimeters.
What is “tolerance” in shop drawings.
ie. Bilateral Tolerance.
Tolerance is the amount of material one can be off when manufacturing an object.
ie. Cutting sheet metal. The drawing says the sheet should be 40mm in length. With a tolerance of +0.1 and -0.2. This means the length can differ as 39.8mm to 40.1mm and still be acceptable for the project.
