What is 3-axis CNC milling?

3-axis CNC milling refers to a machining process performed by a computer numerical control (CNC) milling machine that operates along three different axes to cut and shape materials into precise three-dimensional objects. The three axes are typically labeled as X, Y, and Z.
X-axis: The X-axis represents the horizontal movement of the milling tool along the machine's table from left to right or vice versa.
Y-axis: The Y-axis represents the horizontal movement of the milling tool along the machine's table from front to back or vice versa.
Z-axis: The Z-axis represents the vertical movement of the milling tool up and down.
In 3-axis CNC milling, the milling tool can move simultaneously along the X, Y, and Z axes, allowing it to cut and carve complex shapes and features in three dimensions. However, the tool's orientation is usually fixed, meaning it can only approach the workpiece from a specific angle.