Metal Machining - Theory and Applications Episode 1 Part 6 pdf

... [°C] Diamond 60 0–2000 2.0 3 .1 960 –990 – PCD 10 0–550 2.0** 3.8–4.2 62 0–840 14 0–540 PcBN 10 0* 1. 9–2 .1 4.7–4.9 68 0– 710 15 0–340 K-carbide 75 12 0 3.0–3.4 4.5 6. 0 550 65 0 390–925 P-carbide 25–55 4.0–4 .1 5.8 6. 8 ... [10 6 K 1 ] modulus [GPa] 10 0°C 10 00°C TiC 7.4–7.7 ≈ 450 24–33 38– 41 TiN 9.4 ≈ 250 19 – 21 25– 26 Al 2 O 3 8.4–9.0 ≈ 400 20–28 6 7.5 WC-Co* 4.5...

Ngày tải lên: 21/07/2014, 17:20

... integra- tion. For case 1 192 Advances in mechanics Table 6 .1 Particular values of coefficients and variables in equation (6. 41) Case i dS / i lim 1, i lim 2,i A θ ,i t 1e,i f cos ψ 11 dx′ x′ 1 x′ 2 A major ——— cos ... Section 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...

Ngày tải lên: 21/07/2014, 17:20

... 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′, ... Emission 3, 10 8 11 6. Miwa, Y., Inasaki, I. and Yonetsu, S. (19 81) In-process detection of tool failure by acoustic emission signal. Trans JSME 47, 16 80 16 89. Reiche...

Ngày tải lên: 21/07/2014, 17:20

... 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, ... 10 (3), 95 10 0. Narutaki, N. and Yamane, Y. (19 93) High-speed machining of Inconel 718 with ceramic tools. Annals CIRP 42 (1) , 10 3 10 6. Takeyama, H. and Murat...

Ngày tải lên: 21/07/2014, 17:20

... 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 (19 73), Uehara (19 76) , Narutaki and Yamane (19 76) , ... (min) 15 0 m min -1 15 0 m min -1 2 36 m min -1 Turning Milling 2 36 m min -1 Crater depth ( µm) Depth of cut :1. 0mm Feed rate: 0.2 mm rev -1...

Ngày tải lên: 21/07/2014, 17:20

... 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, ... in metal cutting. Trans ASME J. Eng. Ind. 81B, 2 51 262 . Lee, E. H. and Shaffer, B. W. (19 51) The theory of plasticity applied to a problem of machining. Tr...

Ngày tải lên: 21/07/2014, 17:20

... 2.2 k/ ρ C 11 0–220 85 14 0 50 16 0 12 0–200 220–320 ∆T 1 [°C] a 230–470 18 0–300 11 0–340 250–430 470 68 0 K work [W/m K] 25–45 10 0–400 10 0–300 15 –20 6 15 K tool b [W/m K] 20–50 80 12 0 10 0–500 80 12 0 50 12 0 K* ... al. (19 72) Brass/carbide 30 48 0.3 450 0.9 0.95 Shirakashi and Usui (19 73) C steel/carbide 10 46 0.3 60 0 1. 3 0.8 Shirakashi and Usui (19 73) Low all...

Ngày tải lên: 21/07/2014, 17:20

... 2 .12 A range of possible rake face contact pressure distributions σ n / k , for α = 0º, φ = 10 º and λ = 35º 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)). ... in air and CCl 4 atmos- pheres at cutting speeds from 1 to 10 0 m/min, at feeds between 0 .1 and 0.25 mm and with cutting tools of rake angle 6 to 40˚. At...

Ngày tải lên: 21/07/2014, 17:20

... 3 Mechanical 1 kW 60 00 0.028 Simple CNC 1 kW 20000 0.092 0. 060 5 kW 28000 0 .13 0.0 86 15 kW 50000 0.23 0 .15 Turning centre 5 kW 60 000 0 .18 0 . 16 0 .11 15 kW 12 0000 0.37 0.33 0.22 Table 1. 5 Range of ... 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...

Ngày tải lên: 21/07/2014, 17:20

... emission 15 5 References 15 7 6 Advances in mechanics 15 9 6 .1 Introduction 15 9 6. 2 Slip-line field modelling 15 9 6. 3 Introducing variable flow stress behaviour 16 8 6. 4 Non-orthogonal (three-dimensional) ... in machining 82 3.2 Tool materials 97 References 11 7 4 Tool damage 11 8 4 .1 Tool damage and its classification 11 8 4.2 Tool life 13 0 4.3 Summary 13 4 Re...

Ngày tải lên: 21/07/2014, 17:20