Page 451 - 04. Subyek Engineering Materials - Manufacturing, Engineering and Technology SI 6th Edition - Serope Kalpakjian, Stephen Schmid (2009)

Section 16.15 Economics of Sheet forming Operations
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FIGURE |6.60 (a) through (f) Schematic illustrations of types of press frames for sheet-
forming operations. Each type has its own characteristics of stiffness, capacity, and
accessibility. (g) A large stamping press. Source: (a) through (f) Engineers Handbook, VEB
Fachbuchverlag, 1965; (g) Verson Allsteel Company.

Because a press is a major capital investment, its present and future use for a
broad variety of parts and applications should be investigated. Versatility and
multiple use are important factors in press selection, particularly for product modi-
fications and for making new products to respond to continually changing global
markets.

l6.l5 Economics of Sheet-forming Operations

Sheet-metal forming involves economic considerations similar to those for the other
processes that have been described. Sheet-forming operations are very versatile, and
a number of different processes can be used to produce the same part. The costs in-
volved (see also Chapter 40) depend on the particular operations (such as die and
equipment costs and labor), For small and simple sheet-metal parts, die costs and