A Text Book on Engineering Graphics - Central Board of Secondary ...
A Text Book on Engineering Graphics - Central Board of Secondary ...
A Text Book on Engineering Graphics - Central Board of Secondary ...
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MACHINE DRAWING<br />
Steps Involved<br />
Example 14:<br />
Soluti<strong>on</strong>:<br />
(i) Start with the Fr<strong>on</strong>t View, which comprises two circles with diameter D+1 = 26mm,<br />
2D+3 = 53mm.<br />
(ii) Project the fr<strong>on</strong>t view to get the Top View which is a rectangle <strong>of</strong> size,[(2D+3) x<br />
D/8], 53x3 mm. Complete the Top View as shown in the Fig 2.27<br />
2.8 COMBINATION OF BOLT, NUT AND WASHER FOR ASSEMBLING TWO<br />
PARTS TOGETHER<br />
In comm<strong>on</strong> machineries used at home, we might have observed the assembly <strong>of</strong> bolt, nut and<br />
washer to c<strong>on</strong>nect two parts together. See Fig 2.28<br />
Nut<br />
Fig 2.28<br />
In the earlier topics, we learnt how to draw the views <strong>of</strong> bolt, nut and washer separately. Here,<br />
we expect to understand the views <strong>of</strong> the assembly <strong>of</strong> bolt, nut and washer.<br />
Draw to scale 1:1, the Fr<strong>on</strong>t View, Top View and side view <strong>of</strong> a hexag<strong>on</strong>al headed<br />
bolt <strong>of</strong> diameter 25mm with hexag<strong>on</strong>al nut and washer, keeping the axis parallel to<br />
V.P and H.P<br />
Refer Fig 2.29<br />
NUT, BOLT AND WASHER<br />
ENGINEERING GRAPHICS 65<br />
Bolt<br />
Washer
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