Rev command – Revolve command in AutoCAD – Create the revolution 3D solid

1. The way to call Rev command in AutoCAD

Scroll down menu	Screen menu	Type command	Tool bar
Draw » Modeling » Revolve	Draw2 » Solids » Revolve	Revolve	Modeling

Revolve command is to create open or close revolution 3D solid model by revolving 2D object around an axis belonging to the plane of the object. The number of wireframes covering on the surface of solid model are defined ISOLINES system variable; the default value of this variable is 4.

The system variable DELOBJ controlling revolution object is automatically deleted when solid or surface is created or you are reminded to delete the object.

Note

The following objects can be used to revolve:
Lines, Arcs, Elliptical arcs, 2D polylines, 2D splines, Circles, Ellipses, Planar 3D faces, 2D solids, Traces, Regions, Planar faces on solids or surfaces
You cannot revolve the objects including block, Polylines with self-interference segments.

Revolve command ignores the width of Polyline and revolve from the center of the path of Polyme.

Right-hand rule defines the plus direction of revolution axis.

Revolve

Specify axis start point or define axis by [Object/X/Y/Z] <Object>: Select the first point (1) of revolution axis or enter an option.

Rev command – Revolve command in AutoCAD – Create the revolution 3D solid

2. The options with Rev command.

Axis Start Point

Select the first point and the second point of revolution axis. The plus direction of revolution axis is defined from the first point to the second point. When you select the first point, the following prompt line appears:

Revolve

Current wire frame density: ISOLINES=10
Select objects to revolve: Select objects to revolve (1).

Select objects to revolve:

Specify axis start point or define axis by [Object/X/Y/Z] <Object>: Select the first point (A) of revolution axis.

Specify axis endpoint: Select the second point of revolution axis (B)

Specify angle of revolution or [STart angle] <360>: Enter the revolution angle. The plus angle revolves the object following to counter-clockwise; the minus angle revolves the object following to clockwise.

Start Angle

Define the revolving copy start angle matching with the plane of revolved object and revolution angle.

Specify start angle <0>: Enter the start angle or press ENTER.

Specify angle of revolution <360>: Enter the revolution angle or press ENTER.

Object

Select an object on drawing as revolution axis. The plus direction of revolution axis is from the nearest end point to the furthest end point of the object.

The following objects can be used to be revolution axis: The straight segments of line, of polyline, the edges of Solid object or of surfaces. When you enter the option O of (Object) the next prompt line appears as follows:

Revolve

Current wire frame density: ISOLINES=10
Select objects to revolve: Select objects to revolve (1)
Select objects to revolve:
Specify axis start point or define axis by [Object/X/Y/Z] <Object>: O
Select an object: Select straight segment (2) to be revolution axis
Specify angle of revolution or [STart angle] <360>: 180 Enter revolution angle.

X (Axis)

Use the plus X axis of current UCS to be plus direction of revolution axis. When you enter the option X, the next prompt line appears as follows:
Specify angle of revolution or [STart angle] <360>: Enter revolution angle

Rev command – Revolve command in AutoCAD – Create the revolution 3D solid

Y (Axis)

Use the plus Y axis of current UCS to be plus direction of revolution axis. When you enter the option Y, the next prompt line appears as follows:
Specify angle of revolution or [STart angle] <360>: 360 Enter revolution angle

Z (Axis)

Use the plus Z axis of current UCS to be plus direction of revolution axis. When you enter the option Z, the next prompt line appears as follows:
Specify angle of revolution or [STart angle] <360>: Enter revolution angle

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