Final review Flashcards
dimension lines can be given from extension lines, dimension lines, leaders, figures, notes and symbols
true
what needs to be dimensioned
lengths, diameters/radius, angles and locations
should dimensions be duplicated?
never
how should a diameter/radius dimension look like?
extension line pointing towards the centre of the hole
can the arrows look different on the drawing?
NO
which dimension is in the correct imperial form: 0.214 or .214
.214
do you dimension hidden lines?
no only in the view(s) where it’s not a hidden dimension
what is the purpose of general notes?
simplify/complement dimensioning, indicate rounds/fillets, indicate sharp edges, dimensioning system (imperial or metric)
which is correct form? 24”, 2”-0, 2”-3
2”-0 and 2”-3 (values can’y exceed 12”
can you dimension in metric and in imperial at the same time?
yes write it like a fraction + metric over inch always
how to draw reference dimension
put value in brackets
how to identify a not-to-scale dimension
it will be underlined
if you have rounded ends do you need to identify the radius?
no just overall dimensions are necessary (length x width)
do plain round holes need notes next to dimension?
yes indicate manufacturing requirements
how to avoid drawing repeated features
use a phantom line + EQSP + #features
what angle to use if chamfer angle isn’t specified
45°
what is a full section view
cutting plane passes fully through the part
what is a half section view
two cutting planes perpendicular to each other where one-half of the view is in section and one quarter of full object is removed
what is an offset section
cutting plane can be bent to include several surfaces
what is a broken-out section view
specific section so not necessarily 1/2 or 1/4
what is an aligned revolved section view
what is a detailed removed section view
slope symbol
right angle triangle with ratio
what is chain dimensioning
dimensions are right next to each other in a line
