What is the primary purpose of climb milling, and what surface finish benefits does it provide compared to conventional milling?

The primary purpose of climb milling is to improve surface finish and reduce tool wear by cutting from the thickest part of the chip to the thinnest. In climb milling, the cutting tool's rotation direction is the same as the feed direction, meaning the cutter engages the material with the full chip thickness at the start of the cut. This contrasts with conventional milling, where the cutter engages the material with a gradually increasing chip ....