DesignModeler-Catalytic Converter

Goals:

– Create the catalytic converter model shown below as 3 separate bodies

– Create separate sketches and perform a skin/loft operation to make the converter body

Starting Workbench

-Start Workbench. Double click on Geometry under Component Systems.

-This will create a ‘Geometry component’ in the Project Schematic area.

-Double clickto launch DM (use millimeter as the length unit)

Step 1

Create the flange sketch #1

-[Modeling] > A: Geometry > XYPlane

Toolbar: New Sketch

Sketch1 will be created on XYPlane

In the Details view, rename Sketch1 to “BaseCircle”.

Toolbar: “Look At” icon

-[Sketching] > Draw > Circle

Move the cursor over the sketch origin, then when the “P” is displayed (auto-constraint), click on the left mouse button. Click again to define the radius.

-[Sketching] > Dimensions > Radius

Click on the circle to select it, then click again on the screen to define where to place the dimension.

In the Details view, define Dimensions > R1 as “2.5”.

Create the flange sketch #1 (cont’d)

-On the Selection Toolbar, select the “New Selection” icon.

-Click on the “Select Mode” icon and choose “Box Select”

-Left click and drag to draw a box, selecting the entire circle.

[Sketching] > Modify > Move

-In the text boxes next to the Move tool, change r= to “22.5” and f= to “1”.

-Right-click on the Model View and select “Use Plane Origin as Handle”. This will make the moving reference point as the original, relative location of the sketch origin.

Create the flange sketch #1 (cont’d)

-Right click anywhere on the Model View and select “Rotate by r Degrees”. This makes the moving operation include a rotation, as specified by the value of “22.5” degrees entered earlier.

-Right click anywhere on the Model View and select “Paste at Plane Origin”. This completes the move operation by moving the model to the origin. Since the reference point was the origin, this results in no translation but only a rotation, specified by r=22.5.

-Right click anywhere on the Model View and select and left-click End. This completes the Move operation.

Create the flange sketch #1 (cont’d)

-You should see that the segments have been rotated by 22.5 degrees.

-Click on the “Select Mode” icon and choose “Box Select”

-Left click and drag to draw a box, selecting the entire circle.

[Sketching] > Modify > Copy

-Click on the Copy tool to copy this profile.

-Right-click anywhere on the Model View and select “Use Plane Origin as Paste Handle” to -make the paste operation use the original, relative location of the sketch origin as the pasting point.

Step 2

Create the flange sketch #2

– [Modeling] > Toolbar: XYPlane

– Toolbar: New Plane

Select the New Plane icon from the Active Plane/Sketch Toolbar. This creates Plane4 based on XYPlane.

In the Details view, set Transform 1 to Offset Z, change FD1, Value to be “1”.

– Toolbar: Generate

– [Sketching] > Modify > Paste

Enter “0” for r= and “1.05” for f=.

Right-click anywhere on the Model View and select “Scale by factor f”. This will scale the original sketch profile by a factor of 1.05 for our new sketch.

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