Machine Drawing

(avery) #1

Computer Aided Draughting 421


dharm
d:\N-Design\Des21-1.pm5


6

150

f 20
9

10

7 120

11

f^60

10

8

80

130 1

2260

3 25

(^1020)


4 75

5

Fig. 21.21

9. Dim: leader


Leader start: pick


To point: pick


To point: ↵


Dimension text <20>: φ 20


Dim: exit


10. Command: Dim


Select arc or circle: pick


Select arc or circle; pick


Select arc or circle: pick


Select arc or circle: ↵


11. Dim: diameter


Select arc or circle: pick


Dimension text <60>: φ 60


21.17 POLYLINE (PLINE)


Polyline is basically a composite curve which is a combination of linear and arc segments in


AutoCAD. The other property that can be varied is the thickness of the line drawn. Special


properties of the polyline are:


(a) All the connected segments are treated as single entity.


(b) Width of line of any or all segments can be varied.


(c) It can also be a closed curve.


(d) Line type can be varied as required along various segments of the line.

Free download pdf