What should be considered when selecting cutting tools for a CNC mill?

When selecting cutting tools for a CNC mill, material compatibility and tool geometry are foundational aspects to consider. The compatibility of the tool material with the workpiece material directly affects the efficiency and effectiveness of the machining process. For instance, using a high-speed steel (HSS) tool with softer materials may yield acceptable results, while harder materials might require carbide tools designed to withstand higher temperatures and wear rates.

Tool geometry, which encompasses aspects such as the cutting edge angle, rake angle, and overall shape, significantly influences cutting performance. For example, a tool designed with a specific rake angle can improve chip removal and reduce cutting forces, while a specific edge configuration can help achieve the desired surface finish and dimensional accuracy.

By focusing on these elements, machinists can optimize the tool selection process to enhance productivity, tool life, and the quality of the machined parts.