Metal Machining - Theory and Applications Episode 1 Part 3 pot

... 2 .12 A range of possible rake face contact pressure distributions σ n / k , for α = 0º, φ = 10 º and λ = 35 º and n = (a) 1/ 2, (b) 1/ 3 and (c) 1/ 6 Childs Part 1 28 :3: 2000 2 :36 pm Page 52 2 .1( b)). ... (19 79) Manufacturing Systems Engineering. London: Taylor & Francis. Trent, E. M. (19 91) Metal Cutting, 3rd edn. Oxford: Butterworth-Heinemann. 34 Introduct...

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... Carbide CVD coated 0.2–0.5 3 7 1. 2 1. 9 2.8 1. 8 Ground 0 .1 0.25 2–4 1. 2 1. 9 2.8 1. 8 Super-finished 0. 03 0.4 1. 2 1. 9 2.8 1. 8 Childs Part 1 28 :3: 2000 2 :38 pm Page 73 2.4 .3 Wear in metal cutting Finally, ... 405– 4 13 . Mallock, A. (18 81 82) The action of cutting tools. Proc. Roy. Soc. Lond. 33 , 12 7 13 9. Merchant, M. E. (19 45) Mechanics of the metal cut...

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... [MJ/m 3 ] ≈ 3. 5 ≈ 3. 5 ≈ 2.5 ≈ 4.0 ≈ 2.2 k/ ρ C 11 0–220 85 14 0 50 16 0 12 0–200 220 32 0 ∆T 1 [°C] a 230 –470 18 0 30 0 11 0 34 0 250– 430 470–680 K work [W/m K] 25–45 10 0–400 10 0 30 0 15 –20 6 15 K tool b [W/m ... 50 0.2 13 0 1. 4 0.95 Kato et al. (19 72) Cu/HSS 20 50 0.2 33 5 0.9 0.75 Kato et al. (19 72) Brass/carbide 30 48 0 .3 450 0.9 0.95 Shirakashi and Usui (1...

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... 0.000 016 T N = 0 .19 e –0.0005T + 0.085e –0.000 015 (T– 430 ) 2 a = 0.00 032 , m = 0.0 018 Steel L A = 910 e –0.0 011 T + 19 0e –0.00 011 (T 13 5) 2 + 15 0e –0.00002(T 33 0) 2 + 10 0e –0.00 01( T–650) 2 M = 0. 032 5 ... 0.000 014 T N = 0 .18 e –0.0005T + 0.1e –0.000 015 (T– 430 ) 2 a = 0.00020, m = 0.0052 Steel Y A = 920e –0.0 011 T + 12 0e –0.000 03( T 16 0) 2 + 11 0e –0.0...

Ngày tải lên: 21/07/2014, 17:20

... h c Non-orthogonal (three-dimensional) machining 18 7 Childs Part 2 28 :3: 2000 3 : 13 pm Page 18 7 18 2 Advances in mechanics (b) (c) Fig. 6 .15 continued Childs Part 2 28 :3: 2000 3 : 13 pm Page 18 2 is ... 6.4.8. Non-orthogonal (three-dimensional) machining 18 1 Fig. 6 .15 Uncut chip cross-sections in single point turning: (a) case 1, (b) case 2, (c) case 3 and (d) c...

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... Smart, E. F. and Milner, D. (19 70) The metallurgy of machining, Part 1. Metallurgia 81, 3 10 . 15 8 Experimental methods Childs Part 2 28 :3: 2000 3 :11 pm Page 15 8 Over the exit boundaries BD and DA′, ... (Reichenbach, 19 58), on the tool flank Temperatures in machining 15 3 Fig. 5.20 Radiation from a black body Childs Part 2 28 :3: 2000 3 :11 pm Page 15 3 (Cha...

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... sintered steel and Inconel 718 0.05 0.02 0 .1 0.2 0.5 1. 0 2.0 5 10 20 40 60 80 99 85 Flank wear VB (mm) P10 Sintered steel P10 B 111 2 TiC-Al 2 O 3 ceramic Inconel 718 VB max B 112 - P10, V = 200m/min, ... (19 93) High-speed machining of Inconel 718 with ceramic tools. Annals CIRP 42 (1) , 10 3 10 6. Takeyama, H. and Murata, R. (19 63) Basic investigation of tool wear. Tr...

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... (min) 15 0 m min -1 15 0 m min -1 236 m min -1 Turning Milling 236 m min -1 Crater depth ( µm) Depth of cut :1. 0mm Feed rate: 0.2 mm rev -1 Flank wear (mm) Fig. 4.8 Comparisons of wear when milling and ... tools and has been studied over many years, by Dawihl (19 41) , Trent (19 52), Trigger and Chao (19 56), Takeyama and Murata (19 63) , Gregory (19 65), Cook...

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... 39 0–925 P-carbide 25–55 4.0–4 .1 5.8–6.8 490–560 39 0–840 Cermet 11 35 2.4–2.7 6.7–7.8 39 0–420 480–740 Al 2 O 3 10 35 3. 2 3. 6 7.9–8.0 38 0 39 0 14 5 33 0 Al 2 O 3 /TiC 10 –22 3. 8–4.0 7.6–8.0 37 0 39 5 18 0 33 0 Al 2 O 3 /SiC(wh.) ... 7.6–8.0 37 0 39 5 18 0 33 0 Al 2 O 3 /SiC(wh.) 10 35 3. 4* 7.0–7.5 34 5–425 30 0–500 Si 3 N 4 /Sialon 15 30 2 .1 2 .3 3.2 3. 6...

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... 9 14 7–8 Machine dependent, for ∅25 30 –60 13 –20 example 10 min for 10 0 10 0–250 30 –60 mechanical machine; 5 min solid carbide ∅6 18 33 14 17 for simple CNC mill; 2 min 12 40–80 23 31 for machining ... Figure 1. 16 (milling machine costs), Table 1. 1 (cutting tool data) and equations (1. 10) and (1. 11) for cost rates. 30 Introduction Childs Part 1 28 :3: 2000 2 :...

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