Page 158 - CITS - ED - Mechanical

ENGINEERING DRAWING - CITS

• Draw the shank with short break.

• Draw firm lines of the edges of the rivet.
• Show the dimensions in terms of dia of shank. (Fig 1)

Exercise 8.26
Pan head rivet
Draw a pan head rivet of shank diameter 30 mm. (Fig 2)
• Follow the procedure of Ex.15.25

Fig 2

Exercise 8.27
Conical head rivet
Draw a conical head rivet of shows diameter 25 mm. (Fig 3)
• Draw a horizontal thin line.
• Draw a vertical centre line.
• Mark the diameter of rivet head and shank as per proportion.
• Set off 0.8d on the centre line as shown in Fig 3 from the horizontal line.
• 0.25d as radius, draw an arc as shown in Fig 3.
• 1.5d as radius, draw another arc, tangential to the previous arc of radius 0.25d.
• Draw the firm lines of the edges of the rivet.
• Show the dimensions in terms of diameter of shank.

Fig 3

Exercise 8.28
Countersunk head rivet

Draw a countersunk head rivet of shank diameter 25 mm.
• Draw a horizontal line.

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CITS :Engineering Drawing (Mechanical) - Exercise 8