Final answer:
The surface being machined is parallel with the periphery of the cutter in face milling. This process uses a cutter with teeth on the periphery and bottom face for machining flat surfaces parallel to the cutter's axis.
Step-by-step explanation:
In face milling, the surface being machined is parallel with the periphery of the cutter. This type of milling operation involves a cutting tool with a flat bottom that rotates around an axis perpendicular to the workpiece surface. As the cutter rotates, the cutting edges or teeth remove material from the workpiece to create a flat surface. The orientation of the cutter's axis allows for the face or the end of the cutter to engage in the cutting process. In contrast, end milling would engage the workpiece with the cutter's side, slot milling involves cutting grooves or slots into the workpiece, and profile milling is concerned with machining the contour of the workpiece.