The modification of 3D models - Introduction to AutoCAD 2011: 2D and 3D Design - page 274

axis

R50 Hole Ø80

5

Ø140

R15

Ø110

Holes Ø10

R15

R10

30 40

Fig. 14.8 Example
of constructing a 3D
model - outline for
solid of revolution

Ø90

Hole Ø50

Ø60

R15

Fig. 14.7 Orthographic drawing for the example of constructing a 3D model

3. Set the View/Views/Top view and with the Cylinder tool, construct
cylinders as follows:
In the centre of the solid - radius 50 and height 50 .
With the same centre - radius 40 and height 40 . Subtract this cylinder
from that of radius 50 .
At the correct centre - radius 10 and height 25 .
At the same centre - radius 5 and height 25 . Subtract this cylinder
from that of radius 10 .
4. With the Array tool, form a polar 6 times array of the last two
cylinders based on the centre of the 3D model.
5. Set the View/Views/Front view.
6. With the Move tool, move the array and the other two cylinders to
their correct positions relative to the solid of revolution so far
formed.
7. With the Union tool form a union of the array and other two
solids.
8. Set the View/Views/Right view.
9. Construct a cylinder of radius 30 and height 25 and another of radius
25 and height 60 central to the lower part of the 3D solid so far
formed.

10. Set the View/Views/Top view and with the Move tool move the two

cylinders into their correct position.