ENB331 Lecture Notes - Lecture 2: Thermal Expansion, Dynamometer, Angle
Document Summary
A family of shaping operations wherein material is removed from a starting work piece to impart the final desired geometry. Involves material removal by a sharp cutting tool (turning, milling drilling) Involve material removal by hard, abrasive particles (grinding) Various energy forms other than sharp cutting tools to remove material. Cutting actions involves shear deformation of work material to form a chip which is subsequently separated from the work. As chip is removed, new surface is exposed. Variety of part shapes and special geometric features possible such as. Chips generated in machining are wasted material, at least in the unit operation. Time consuming (e. g. round holes and chamfers etc) Roughness value (i. e. ra) less than 0. 4 micron) Most frequently used to cut metals and alloys. time to shape a given part than alternative shaping processes such as casting, rolling or forming.
