TAILIEUCHUNG - Manufacturing Design, Production, Automation, and Integration Part 6

Tham khảo tài liệu 'manufacturing design, production, automation, and integration part 6', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Part II Discrete-Parts Manufacturing Manufacturing in its broadest form refers to the design fabrication production and when needed assembly of a product. In its narrower form however the term has been frequently used to refer to the actual physical creation of the product. In this latter context the manufacturing of a product based on its design specifications is carried out in a discrete-parts mode . car engines or a continuous-production mode . powderform ceramic . In this part of the book our focus is on the manufacturing . fabrication and assembly of discrete parts. Continuous-production processes used in some metal chemical petroleum and pharmaceutical industries will not be addressed herein. In Chap. 6 three distinct fusion-based production processes are described for the net-shape fabrication of three primary engineering materials casting for metals powder processing for ceramics and high-melting-point metals and their alloys . cermets and molding for plastics. In Chap. 7 several forming processes such as forging and sheet forming are discussed as net-shape fabrication techniques alternative to casting and powder processing of metals. One must note however that it is the manufacturing engineer s task to evaluate and choose the optimal fabrication process among all alternatives based on the specifications of the product at hand. Copyright 2003 by Marcel Dekker Inc. All Rights Reserved. In Chap. 8 several traditional material-removal techniques such as turning milling and grinding collectively termed as machining are described. These techniques can yield parts that are dimensionally more accurate than those achievable by net-shape-fabrication methods. In practice for mass-production cases it is common to fabricate rough-shaped blank parts using casting or forming prior to their machining. In Chap. 9 the emphasis is on nontraditional fabrication methods such as electrical-discharge machining lithography and laser cutting for part geometries and .

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