Special milling tools for improving productivity

During the milling operations a reduction in cutting forces combined with having stable cutting process conditions improves efficiency, productivity, and part quality. At this point, milling tools with special geometries such as variable pitch or/and variable helix tools, end mills with serrated or crest-cut edge forms can provide significant advantages to reach these goals. For this purpose, it is important to be able to design the cutting tool geometry considering process mechanics and dynamics. In this chapter, we aim to explore various aspects related to the design and performance of these special milling tools in a comparative manner. Our discussion will cover topics such as the tools' geometry, design, and performance, along with the underlying principles that govern their behavior in the milling process.