Introduction to Rotary Milling with engraving example
Rotary Milling Basics
Rules of Rotary Milling:
- All geometry must be drawn in the XY plane
- Only OD Rotary Milling is supported
- No off-center rotary milling is supported
The part in this example shows two examples of engraving on an OD of a 2" cylinder. Download the part HERE.
Steps to recreate this part:
- Create a new GibbsCAM part file
- Set the machine type to 4 Axis Vertical Mill.
- Define your stock as X+ = 2, X- = -2, Y+ = 4, Y- = -4, Z+ = 2, Z- = -2
- Open the Workgroup window and right-click WG#1
- Set workgroup to Rotary Milling
- Create a new workgroup.
- Right-click on WG#2 and set it to Part Stock extruded along the Y axis
- Draw a 2" circle in WG #2
- Change to WG #1
- Using the Text Creation tool generate the text you wish to machine. Be sure to define the geometry at the correct Z-level. When drawing geometry for Rotary Milling it should always be drawn at the OD of the stock...This means all your geometry used for Rotary Milling will be drawn at a POSITIVE Z position.
- Apply a roughing or contouring toolpath to your geometry. Be sure to go to the Rotate tab and select Rotary Mill.
Special notes: Be sure to pay special attention to your depths and clearances. This is the #1 cause of problems when performing a rotary milling operation.