In this activity, you orient the part with a 3+2 machining setup and use a 3D Adaptive Roughing strategy (previously known as Adaptive Clearing) to create the elliptical shaped feature.

Before machining the part (left), after using 3D Adaptive Roughing (right).
On the Manufacture toolbar, Milling tab, select 3D > 3D Adaptive Roughing
.
In the 3D Adaptive Roughing dialog, set the tool to #12 – Ø8 R1 mm bullnose.
Select
, Tool tab, on the 3D Adaptive Roughing dialog, if not already selected.
Click the Select button.
In the Select Tool dialog, in the left panel, scroll to the bottom and select Tutorial Tools (Metric).
In the list of tools, click the tool #12 – Ø8 R1 mm (Bull nose end mill).

The Tutorial Tools (Metric) library is selected, then the specific tool is selected.
Click Select to select the tool and close the Select Tool dialog.
Define the orientation and the elliptical geometry to machine.

Pick the outer elliptical edge as the machining boundary.
Choose Selection in the Machining boundary perimeter.
Ensure the Machining boundary selection is active.
Click on the outer elliptical edge.
Select Tool center on boundary from the Tool Containment drop-down.
Click OK on the 3D Adaptive Roughing dialog to start calculating the toolpath.

In this activity, you used a 3+2 machining technique to orient the part so the plane containing the ellipse is normal to the machine’s Z-axis. Then, you used 3D Adaptive Roughing to rough cut the elliptical pocket.

Before machining the part (left), after using 3D Adaptive Roughing (right).