The cutting tool moves vertically along which axis?

The cutting tool moves vertically along which axis?

• A. X axis movement on a vertical mill
• B. Z axis movement on a lathe
• C. Y axis movement on a horizontal mill
• D. A axis movement on a 5-axis mill

Answer: (C)

In milling machine coordinate systems, the direction that counts as “vertical” depends on the machine’s orientation. On a horizontal mill, the spindle is oriented left-to-right, and the vertical motion of the cutting action relative to the work is produced by moving the table in the vertical sense of that machine’s axes, which is the Y axis. So the tool’s vertical travel corresponds to the Y axis. The other options mix directions: the X axis controls left-right table movement, not up-down; the Z axis is the vertical direction on a vertical mill (not the horizontal setup described here); and a 5‑axis mill uses additional rotational axes (A, B, C) that aren’t the straight vertical feed.

In milling machine coordinate systems, the direction that counts as “vertical” depends on the machine’s orientation. On a horizontal mill, the spindle is oriented left-to-right, and the vertical motion of the cutting action relative to the work is produced by moving the table in the vertical sense of that machine’s axes, which is the Y axis. So the tool’s vertical travel corresponds to the Y axis.

The other options mix directions: the X axis controls left-right table movement, not up-down; the Z axis is the vertical direction on a vertical mill (not the horizontal setup described here); and a 5‑axis mill uses additional rotational axes (A, B, C) that aren’t the straight vertical feed.