Theory of Metal Cutting Birla Institute of （贝拉的金属切削理论研究所）.pdf

Theory of Metal Cutting Chapter 4 © rkm2003 Typical Metal Cutting Operation © rkm2003 Machining or Metal Cutting Removing unwanted material Cutting/chipping/machining/ metal cutting To get desired Shape Size Surface finish © rkm2003 Machining Changing shape/size/finish (a) Raw Material (b) Finished Product Unwanted material to be removed © rkm2003 Metal Cutting: features Closer dimensional accurac Surface texture/finish Economical Complex shape Size © rkm2003 Metal Cutting: features Material loss (~50%) Scarcity of materials Special equipment Skilled operators Time required All materials cannot be machined © rkm2003 Essentials of Metal Cutting Operation • Machine Tool • Cutting Tool • Method • Operator A typical Cutting Tool © rkm2003 Machine Tool Machine used for metal cutting provision for holding workpiece provision for holding tool relative motion between them providing power/energ © rkm2003 Typical Machine tool Ram v Tool head d or f Tool Workpiece Vise Table Column f or d Base © rkm2003 Different Ma