Metal Machining - Theory and Applications 2008 Part 12 pps

... Oh, S-I. and Altan, T. (1989) Metal Forming and the Finite Element Method. New York: Oxford University Press. Kudo, H. (1965) Some new slip-line solutions for two-dimentional steady state machining. ... 43–55. Johnson, W. and Mellor, P. B. (1973) Engineering Plasticity. London: van Nostrand. Johnson, W., Sowerby, R. and Venter, R. D. (1982) Plane-Strain Slip-Line Fields for Metal-...

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... 15 15 15 Fig. 1.28 Times and costs to remove metal by milling, for the conditions i and ii of Table 1.7 compared with remov- ing the same metal by turning (- - -) Childs Part 1 28:3:2000 2:35 pm ... that the orga- nizational gains of cell-oriented and FMS organization bring real benefit. 1.4.3 Milling and drilling times and costs Equations (1.7) and (1.8) for machi...

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... removal. Naerheim and Trent (1977) have proposed that the wear rates of both WC-Co (K-grade) and WC-(Ti,Ta,W)C-Co (P-grade) cemented carbides are controlled by the rate of diffusion of tungsten (and Ti and ... Ohio: ASM. Anon (1994) Modern Metal Cutting – A Practical Handbook. Sandviken: AB Sandvik Coromant. Brookes, K. J. A. (1992) World Directory and Handbook of Hardmetals and...

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... yields the D 3 and D 2 relations derived in the previous paragraph. Machine tool technology 13 Fig. 1.13 A traditional – column and knee – design and (right and below) partly-built and complete ... mechanical engineering of machining: mechanics, heat conduc- tion and tribology (friction, lubrication and wear). Chapters 3 and 4 focus on materials’ performance in machining, Ch...

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... the EMF generated. Standard material combinations are copper-constantan (60%Cu–40%Ni), chromel (10%Cr–90%Ni)–alumel (2%Al–90%Ni-Si-Mn) and platinum–rhodium. In metal machining applications, it is possible ... between the parts is a slip-line. Thus, in machining, the boundaries between the primary shear zone and the work and chip and between the secondary shear zone and the chi...

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... feeds (mm) of 0.5 (•), 0.25 (+) and 0 .125 (o); and (b) replotted to compare with theory (see text) Childs Part 2 28:3:2000 3 :12 pm Page 175 complexity of three-dimensional geometry in a more ... 6.4.8. Non-orthogonal (three-dimensional) machining 181 Fig. 6.15 Uncut chip cross-sections in single point turning: (a) case 1, (b) case 2, (c) case 3 and (d) case 4 (a) Childs Part...

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... built-up-edge formation (Usui et al., 1981) and more recently in studies of low alloy semi free -machining steels (Childs and Maekawa, 1990). It is given further consideration in Section 7.3 and ... steel (the 0.36C-Cr-Mo-Ni material of Table A4.4). The Hopkinson bar equipment has established different laws for non-ferrous face centred cubic metals such as aluminium and a-brass. A mu...

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... for design and control of machining processes: (a) CAD assisted milling process simu- lator and planner (Spence and Altintas, 1994) and (b) machining- scenario assisted intelligent machining system (Takata, ... E., Smart, E. F. and Milner, D. (1970) The metallurgy of machining, Part 2. Metallurgia 81, 51–59. Yamaguchi, K. and Kato, T. (1980) Friction reduction actions of i...

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... flank, notch and nose wear (VB, VN and VS) and operation variables to current forces. The levels of VB, VN and VS, V, f and d were the inputs and F d , F f and F c were outputs of the net; and equation ... detailed and reli- able recognition of cutting states in the future. 9.5 Model-based systems for simulation and control of machining processes In this final section, t...

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... – α , α – β , β alloys 5.5–8 8 12 10–17 12. 5–21 15–25 Ti-6Al-4V 6.6–6.8 8.5–9.1 10.5 12. 5 13–16 16–19 *: high and commercial purity; **: including cobalt- and ferrous-base superalloys. Table A4.2 ... 0.57, b = 0.2 Other forms have been given for a Ti-6Al-4V alloy (Usui et al. 1984) and a Ti-6Al-6V-2Sn alloy (Maekawa et al. 1994b). For the Ti-6Al-4V alloy: s — = A(e — ˘ /1000) M e aT...

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