Revolving a Profile

In this Task

• The profile of the wheel will be revolved about an offset axis to produce a 3D part.

Associated Tasks

• Using a Parallel Line to offset a Polyline.

Before you Start

• Use your drawing which was saved in the previous Session or make use of the sample drawing for this Session. The previous Task/Tasks must be completed in order to continue with this Task.
• The view is set to Isometric South East; Workplane is displayed and set to Plane by World.
• Layer ‘Part 3 Model’ is used for this Part.

 

The sketch of Part 3 should be the only object remaining in the editor, shown below. Parts 3 has been isolated and Parts 1 and 2 will remain hidden until the isolation is ended.

 

Parallel Line

Ribbon : Draw | Draw 2D | Line | Parallel

Default Menu : Draw > Line > Parallel

Palette : Sketch | Line | Parallel

Creates a parallel line at a specified offset distance from an existing line.The distance is input into the Offset field of the Inspector Bar.The Offset data field can be locked when a fixed offset distance is required.The newly created line is inserted onto the current layer.

Select the Parallel tool from the menu options above then activate the Layer for Part 3 Model.

Create an offset from the base of the profile at a distance of 13, shown below. Dimension is shown for clarity only.

Activate

 

Edge offset by 13

Producing a part using the Revolve tool

Ribbon | Draw | Draw 3D | Revolve

Default : Draw | 3D Object | 3D Profile Based | Revolve

Palette : 3D Model | 3D Object | Revolve

A 2D polyline can be used to create a suitable profile which can be revolved about an axis to produce a part.If the start and end point of the polylines are collinear, then the resulting part will be a closed, filled area.After the revolve function has been completed, the profile can be modified using the Edit Tool. A new 3D shape will be produced after the profile has been modified.The degree of rotation of the part can be controlled by adjusting the revolved shape properties. This can be modified using the Properties sheet or the Selection Info palette.

An axis is required for this profile to be revolved. For this task, a parallel line has been offset from the base of the profile at a distance of 13.

Select the Revolve tool from the menu options above.

Make sure the layer is set to Part 3 Model.

Select the profile, then indicate a nearest snap point on the line by positioning the cursor over the construction line and inputting N. This is shown by the arrow below.

 

Selecting a nearest point on the construction line using the keyboard N

Hold down the SHIFT keyboard key and drag the cursor in the direction shown below.

Defining the second point of the revolve axis

The result is shown below. The profile has been highlighted for illustrative clarity to indicate the original sketch profile.

3D object produced by revolving the profile, shown in bold above

Use the Design Director to display all the layers of the parts in the model, shown below.

Parts 1 -3 shown in the editor

---

Take Note

Revolution Shape

The revolution shape of the revolved profile can be changed by selecting the part, then using the Selection Info palette to change the properties, such as the angle of rotation etc, shown below.

Shape of object changed by adjusting the revolution angle in the Selection Info palette

Save Drawing

This drawing is continued in the next Task.