Today, the mechanical processing industry is moving towards a technology that ensures machining accuracy and surface quality of parts is increasingly demanding. Therefore, NC and CNC numerical control machine tools are the top choice, but how to use the machine? Choosing the appropriate cutting mode range during the machining process is an urgent issue. Therefore, the study of applying matlab 7.9 software to process experimental data and draw graphs is to provide recommendations for lecturers and students practicing on the machine to correctly choose appropriate cutting parameters. To process products (student assignments) is a necessary issue.