WORK (S) IN PROGRESS

book, 2007

2011

Instructional objectives By the end of this lecture, the student will learn what are the different types of manufacturing processes and manufacturability of engineering materials. Manufacturing Processes and Classification Manufacturing processes are the steps through which raw materials are transformed into a product. The manufacturing processes can be broadly classified into three categories viz. shaping, joining and finishing processes as shown schematically in Fig 1. The selection of a particular process from a wide range of choices for a given application requires a hierarchical classification of the processes. For example, Fig 2 depicts how the shaping family can be expanded in different classes such as casting, deformation, moulding, composite and powder processing, and prototyping. Next, moulding as a class can be enlarged into a number of member processes such as compression, rotational, transfer, injection moulding, etc. Lastly, each member process can be identified with a number of attributes, which would facilitate the selection of a member process for a given material, dimension, level of requisite tolerances and so on. Similarly, Fig 3 depicts how the joining and machining family can be expanded in different classes and actual processes. A brief description of the three broad categories of the manufacturing processes and the corresponding classifications are outlined in the following: [1] and [2].

Prosthetics and Orthotics International, 2011