TAILIEUCHUNG - Ebook Fundamentals of modern manufacturing (4th edition): Part 2

(BQ) Part 2 book "Fundamentals of modern manufacturing" has contents: Material removal processes, property enhancing and surface processing operations, joining and assembly processes, special processing and assembly technologies, manufacturing systems, manufacturing support systems. | E1C21 11/11/2009 15:44:1 Page 483 Part VI Material Removal Processes 21 THEORY OF METAL MACHINING Chapter Contents Overview of Machining Technology Theory of Chip Formation in Metal Machining The Orthogonal Cutting Model Actual Chip Formation Force Relationships and the Merchant Equation Forces in Metal Cutting The Merchant Equation Power and Energy Relationships in Machining Cutting Temperature Analytical Methods to Compute Cutting Temperatures Measurement of Cutting Temperature The material removal processes are a family of shaping operations (Figure ) in which excess material is removed from a starting workpart so that what remains is the desired final geometry. The ‘‘family tree’’ is shown in Figure . The most important branch of the family is conventional machining, in which a sharp cutting tool is used to mechanically cut the material to achieve the desired geometry. The three principal machining processes are turning, drilling, and milling. The ‘‘other machining operations’’ in Figure include shaping, planing, broaching, and sawing. This chapter begins our coverage of machining, which runs through Chapter 24. Another group of material removal processes is the abrasive processes, which mechanically remove material by the action of hard, abrasive particles. This process group, which includes grinding, is covered in Chapter 25. The ‘‘other abrasive processes’’ in Figure include honing, lapping, and superfinishing. Finally, there are the nontraditional processes, which use various energy forms other than a sharp cutting tool or abrasive particles to remove material. The energy forms include mechanical, electrochemical, thermal, and The nontraditional processes are discussed in Chapter 26. Machining is a manufacturing process in which a sharp cutting tool is used to cut away material to leave the 1 Some of the mechanical energy forms in the nontraditional .

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