Final answer:
Climb milling is a milling method where the cutter rotates with the direction of the feed, while conventional milling is a method where the cutter rotates against the direction of the feed.
Step-by-step explanation:
In milling operations, climb milling and conventional (up) milling refer to the two main methods of feeding the workpiece against the rotating milling cutter. The main difference between the two is the direction in which the cutter and the workpiece move relative to each other.
In conventional milling, the cutter rotates against the direction of the feed, meaning the cutter cuts against the feed. This results in a cutting action that tends to lift the workpiece and may cause chatter or a rough surface finish.
In climb milling, also known as down milling, the cutter rotates with the direction of the feed, meaning the cutter cuts with the feed. This results in a cutting action that tends to press the workpiece down onto the table, providing better stability and reducing the chance of chatter. It also produces a smoother surface finish.