Compound Profile Extrusion

In this Task 

• This is a small exercise in adjusting dimensional constraints when the profile has been extruded to produce a 3D model.

Associated Tasks 

• Compound profile extrusion.
• 3D Views
• Using the Draft Render tool.

Before you Start 

• The 3D drawing environment differs from that of 2D. Only the minimum of 3D tools are used in this task.

Take Note 

• Session 8 contains more information on extruding objects to create a 3D solid.
• Menu options for the Default menu and workspace, the Ribbon and Palettes are provided directly under the Command Name heading.

Compound Profile Extrusion

Ribbon : Draw } Draw 3D | Simple Extrude | Use compound profile (at the base of the editor or right click and select from context menu)

Default Menu : Draw | 3D Object | 3D Profile Based | Simple Extrude |

Palette : 3D Model | Simple Extrude | Use compound profile (at the base of the editor or right click and select from context menu)

When the compound profile of a constrained sketch is extruded to produce a 3D model, the dimensional constraints can still be used to update and modify the new 3D Model.

 

Switch off all layers other than the sketch profile. This includes the layers for Dimensions, Constraints and Center Lines.

Right click and select Isometric South East from the local menu then reduce the zoom slightly so the result is similar to the illustration below.

Profile shown from Isometric South East view

From the menu options above select Simple Extrude tool. Right click and select Use Compound Profile option from the local menu.

Select the outer sketch profile, then hold down the SHIFT key to select the 2 inner circles shown below.

Selecting the profile, removing the inner circle regions

TAB to the height field and input 50 or similar. The height of the extrusion can be changed later using the Selection Info palette. The result is shown below.

Profile extruded with circle regions excluded

Use the Calculator palette to update the available variables. Make sure the values input are possible from a design integrity point of view.

Variables changed, 3D Model updated

Variables changed, extrusion height changed to 80 in Selection Info palette

Updates done in both Variables and Selection Info Palette

Constraint Animation

Ribbon : Insert | Constraints | Animation

Default : Constraints | Animation

Palette : Sketch | Constraints | Animation

This constraint tool animates in real-time, the consequences of updating constrained features within a sketch and is a useful tool for anticipating design possibilities without bypassing constraint conditions.The animation sequence can be defined by the currentand anticipated distance, the number of incremental steps between these values and the time delay between each animated step.

In the example below, the Length dimensional constraint of 120 will be increased to 180 by using 6 steps at a 1 second interval. The constraint relationship defined as var5 will be maintained, implying that the value of 40 will be increased to 60, thereby maintaining its distance to 1/3 the overall value of the new Length.

From the Insert menu, select Animation from the Constraints menu then select the dimension shown by the left arrow above. Input the information shown above, then click Play.

The increments (Steps) of 6 will appear as ‘frames’ which can be paused at any stage. In the example below, the animation was paused at the last stage. From the example below, it can be observed how the constraint has updated in the Calculator palette and all associated constraints have been simultaneously updated.

Animation paused at Step 6 of the increments

Forward/Rewind

In the example below, the process was rolled back 3 steps by clicking onto the rewind button 3 times, shown by the arrow below.

Rolled back by 3 steps by clicking onto the Rewind button