Page 126 - CITS - ED - Mechanical

ENGINEERING DRAWING - CITS

Exercise 7.17

A thin cylinder of dia 80 mm resting vertically is joined to a 40° branch pipe of dia 40 mm as shown in Fig 18. Draw
the intersection curve of the cylinders. The axes of both the cylinders are 15 mm apart.
• Draw outlines of the pipes as shown in Fig 18.

• Divide branch pipe surface into a number of equal parts by drawing semi-circle and mark as 1' ,2' ,3' ....6' as
1
1
1
1
shown in Fig 18.
• Mark the corresponding points on the top view of the branch pipe projected from the front view as 1,2,3....7
• Draw horizontal projectors from these points to meet the dia 80 mm circle and number them in the top view.
• Draw vertical projectors from these points on to the front view intersecting the projection lines from the semi-cir-
cle.
• Mark the intersecting points and join with smooth curve.

Fig 18

Exercise 7.18

The axis of two cylinders A & B intersect on the centre line at 45° are positioned as shown in Fig 19. Draw the
plan, elevation and the intersection curve.
• Draw the given front view of the cylinders as stated in position. (Fig 20)

• Draw the plan for the given elevation.
• Draw the semi-circle of the branch cylinder, divide it into 6 equal parts and number them.
• Draw the projectors from these points parallel to the inclined axis of cylinder `B'.
• Mark the corresponding points on the top view of the cylinder `A' by drawing horizontal projectors from the top
view of cylinder `B'.
• Draw vertical projectors from these point to meet the inclined projectors drawn from the semi-circle of cylinder
`B'.

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CITS : Engineering Drawing (Mechanical) - Exercise 7