Working Drawings Flashcards
(24 cards)
What is the colour of the front of a component in an orthographic drawing
Red
What is the colour of the right side of a component in an orthographic drawing
Blue
What colour is the top view of a component in an orthographic drawing
Green
What’s does a cone and circles symbol show
That the drawing is third angle projection
What dimensions are orthographic drawings in
Millimetres
What does a title block of an orthographic drawing show
Drawing number
Title
Scale
Material
What is the uk standard for engineering drawings
BS 8888
What does the BS 8888 standard show
What types of lines should be used, how to represent dimensions, and how to indicate certain mechanical features
What are examples of mechanical feature uk standard show
Holes, chamfers and screw threads
What is a dashed line used for
Show hidden features within an object
What are centre lines
Drawn to indicate the exact centre part. Always drawn using a series of shorter and longer dashes
What are projection lines
Used to extend existing lines in a drawing and used to help create new geometry
What is linear measurement
Measurement indicated in a straight line
What is a leader line
Points to a significant feature on a drawing
What is surface finish
Nature of a surface
Defined in terms of its roughness, lay and waviness
What is a tolerance
The permitted difference in a dimension that is allowed
What is the abbreviation of across flats
AF
What are across flats
The distance between two parallel surfaces on the head of a screw, blot or nut
What is the abbreviation of a centre line
CL
C/L
What is the abbreviation of drawing
DWG
DRG
What is the abbreviation for material
MATL
Matl
What is a chamfer
A transitional edge between two faces of an object
What is a countersink
A conical hole cut into an object so that a bolt or screw can be sunk below the surface
What is knurling
Process of machining a series of criss-cross ridges around the edge of something so that it is easier to grip
