3+1 machining is a 4-axis CNC process that adds a rotational axis to a standard 3-axis machine, allowing a workpiece to be indexed or rotated for machining on multiple sides in a single setup.
The "3" refers to the standard X, Y, and Z axes of motion, while the "1" refers to the additional axis, which rotates around the X or Y axis. This machining mode minimizes setup time and increases accuracy compared to traditional 3-axis machining, which would require multiple repositioning steps.
Using 3+1 - Defined axis mode
In the Prepare phase in CAM Assist, select 3+1 - Defined axis in the Mode menu
- In the Setup panel, select the workholding and avoidance geometry if needed, and define the Axis of rotation (X or Y-axis)
3. Finish defining other fields in the Prepare phase (Machine, Material and Toolset) as needed, and select Run CAM Assist.