Solids.. Revolve

REVOLVE command creates 3D solids by revolving closed polylines, circles, ellipses, closed splines, or regions about an axis in 3D space.

Create the shape as shown in Figure 1 using the POLYLINE

 

Figure 1

Figure 2

Click on the SW Isometric view in the view tool bar as shown in Figure 2

REVOLVE the object as shown in Figure 3
Invoke REVOLVE( (Draw menu > Solids > Revolve)
Command: _revolve
Current wire frame density: ISOLINES=30
Select objects: Select the object
Select objects: Enter
Specify start point for axis of revolution or define axis by [Object/X (axis)/Y (axis)]: Pick point 1
Specify endpoint of axis: Pick point 2
Specify angle of revolution <360>:360

Figure 3

Figure 4

Alter the shade mode to GOURAUD SHADED from the Shade Toolbar as shown in Figure 4

Creating a hollow object using the REVOLVE command

Click on the FRONT VIEW in the view tool bar and using a POLYLINE to create the shape as shown in Figure 5.

Figure 5

Figure 6

Draw a construction line a distance away from the main object and name endspoints as 1 and 2 as shown in Figure 6

Click on the SW Isometric view in the view tool bar as shown in Figure 7

 

Figure 7

Figure 8

REVOLVE the object as shown in Figure 8
Invoke REVOLVE( (Draw menu > Solids > Revolve)
Command: _revolve
Current wire frame density: ISOLINES=30
Select objects: Select the object
Select objects: Enter
Specify start point for axis of revolution or define axis by [Object/X (axis)/Y (axis)]: Pick point 1
Specify endpoint of axis: Pick point 2
Specify angle of revolution <360>:360

REVOLVE object about it X Axis Line at 270°

Use a POLYLINE to create the shape as shown in Figure 9 by selecting the proper UCS.
Invoke a POLYLINE(Draw menu > Polyline)
Command: _pline
Specify start point: Pick a point
Current line-width is 0.00000
Specify next point or [Arc/Halfwidth/Length/Undo/Width]: Staring point is where the UCS is located. Draw a straight line to the right
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: Draw a straight line down
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: A
Specify endpoint of arc or[Angle/CEnter/CLose/Direction/Halfwidth/Line/Radius/Second pt/Undo/Width]: S
Specify second point on arc: Pick a second point in the middle of the arc
Specify end point of arc: Pick a third point where the arc ends
Specify endpoint of arc or[Angle/CEnter/CLose/Direction/Halfwidth/Line/Radius/Second pt/Undo/Width]: L
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: Draw a straight line towards the left
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: A
Specify endpoint of arc or[Angle/CEnter/CLose/Direction/Halfwidth/Line/Radius/Second pt/Undo/Width]: S
Specify second point on arc: Create the bigger arc by picking on second point in the middle of the arc
Specify end point of arc: Pick the third point where arc end
Specify endpoint of arc or[Angle/CEnter/CLose/Direction/Halfwidth/Line/Radius/Second pt/Undo/Width]: L
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: Draw a straight line
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: C (close the polyline)
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: Enter
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: Enter

 

Figure 9

Figure 10

REVOLVE the object around the X Axis as shown in Figure 10
Invoke REVOLVE (Draw menu > Solids > Revolve)
Command: _revolve
Current wire frame density: ISOLINES=30
Select objects: Select the object
Select objects: Enter
Specify start point for axis of revolution or define axis by [Object/X (axis)/Y (axis)]: X
Specify angle of revolution <360>: 270

Use a POLYLINE to create the shape as shown in Figure 9 by selecting the proper UCS
Invoke a POLYLINE(Draw menu > Polyline) .
Command: _pline
Specify start point: Pick a point
Current line-width is 0.00000
Specify next point or [Arc/Halfwidth/Length/Undo/Width]: Staring point is where the UCS is located. Draw a straight line to the right
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: Draw a straight line going in the Y Axis Direction
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: Draw a small straight line in -X direction
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: Draw a small straight line in -Y direction
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: Draw a small straight line in -X direction
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: A
Specify endpoint of arc or[Angle/CEnter/CLose/Direction/Halfwidth/Line/Radius/Second pt/Undo/Width]: S
Specify second point on arc: Pick a second point in the middle of the arc
Specify end point of arc: Pick the third point where arc end
Specify endpoint of arc or[Angle/CEnter/CLose/Direction/Halfwidth/Line/Radius/Second pt/Undo/Width]: L
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: Draw a straight line in -X direction
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]: C (Close the polyline)

 

Figure 11

Figure 12

REVOLVE the object around the Y Axis as shown in Figure 12
Invoke REVOLVE (Draw menu > Solids > Revolve)
Command: _revolve
Current wire frame density: ISOLINES=30
Select objects: Click on the object
Select objects: Enter
Specify start point for axis of revolution or define axis by [Object/X (axis)/Y (axis)]: Y
Specify angle of revolution <360>: 360