To Machine Shallow Areas Using Scallop

Next, create a constant Scallop toolpath on the shallow areas of the boss.

1. On the ribbon, click CAM tab 3D Milling panel Scallop .

Tool tab

The previous tool #20 - Ø10 mm ball should still be selected. Leave all other settings on this tab unchanged.

Geometry tab

We want to confine the machining to shallow areas with this operation. This can be achieved by limiting the slope range.

1. Click the Geometry tab.
2. Enable the Slope check box.
3. Change From slope angle: to: 0 deg
4. Change To slope angle: to: 65 deg
Note: Machining from 0 degrees (horizontal) to 65 degrees from horizontal ensures that there is no excess material in the transition zone between this operation and the previous operation on steep areas, and that the tool starts in areas that are already machined.

The set slope angle also includes the flat face at the base of the part, but this is finished later with 0 stock to leave using a Horizontal finishing strategy.

To avoid machining the flat base of the part we can select it as an avoid surface. To learn more, please refer to the Inventor HSM Help topic: About Avoid Surfaces.

5. Enable the Avoid/Touch Surfaces check box.
6. Activate the Avoid/touch surfaces button and select the flat face at the base of the part:
   
   
   
   

Passes tab

1. Click the Passes tab.
2. Set Tolerance: to: 0.02 mm
3. Set Stepover: to: 1 mm
4. Enable the Stock to Leave check box. Once again, use the default values of 0.1 mm.

Start the Calculation

1. Click at the bottom of the Operation dialog box, or right-click in the graphics window and select OK from the marking menu, to automatically start calculating the toolpath.

The toolpath is now calculated and a preview appears in the graphics window.

Continue to To Use Scallop for a Finishing Operation...