Question

Question 3 in which milling process the chip formed by each cutter tooth starts out very thin and increases in thickness during the sweep of the cutter? Up milling Down milling Peripheral milling Face milling

Answer 1

1.There are two distinct ways to cut materials when milling: Up Milling and Down Milling. The difference between these two techniques is the relationship of the rotation of the cutter to the direction of feed. In Conventional Milling or Up milling, the cutter rotates against the direction of the feed. During Climb Milling or Down milling, the cutter rotates with the feed.

2. In Up milling ,the chip formed by each cutter tooth starts out very thin and increases in thickness during the sweep of the cutter.

• Tool rubs more at the beginning of the cut, leading to faster tool wear and decreases tool life.
• Chips are carried upward by the tooth and fall in front of cutter creating a marred finish and re-cutting of chips.

Here, option (a) Upmilling is correct

: Rotation : clip thickness begins at Zero and increases