dimensioning - wiroj.me.engr.tu.ac.th
Post on 26-Mar-2022
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1
DIMENSIONING
PLACEMENT OF DIMENSION AND EXTENSION LINES
Arrowhead
(mm.)
xxx
xxx
xxx
xxx
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Grouped dimensions.
3
Crossing lines.
Arrowhead.
Leaders.
xxx
4
Dimension figures.
Directions of dimension figures.
5
Dimension angles.
Dimension arcs.
6
Hole symbol.
Square symbol.
Hole symbol.
xxx
xxx
7
Hole symbol.
Counterbore and spotface symbols.
xxx
xxx
xxx
xxx
xxx
xxx
xxx
xxx
xxx
8
Countersink and counterdrilled symbols.
Drilled depth
Finish mark symbol.
Traditional symbol General symbol New symbol
xxx
xxx
xxx
xxx
xxx
xxx
9
Surface texture symbol.
Surface texture symbol.
10
Surface texture symbol.
L
Surface roughness, Ra.
( ) ( )L
B...BBA...AAR N21N21a
+++++=
xxx
xxx
xxx
A
xxx
xxx
xxx
xxx
xxx
xxx
xxx
xxx
11
Geometric tolerancing symbol.
Geometric tolerancing symbol.
12
Geometric tolerancing symbol.
(related to machingprocesses)
Geometric tolerancing symbol.
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