Metal Machining - Theory and Applications Episode 2 Part 4 pptx

... h B =0 .4 mm Childs Part 2 28:3 :20 00 3:18 pm Page 25 5 Vyas, A. and Shaw, M. C. (1999) Mechanics of saw-tooth chip formation in metal cutting. Trans ASME J. Manuf. Sci. and Engng. 121 , 163–1 72. Williams, ... conventional, (b) and (c) type I and II tools, K = 1 .2 Childs Part 2 28:3 :20 00 3:19 pm Page 26 2 where F* t , F* r and F* z are the specific cutting forc...

Ngày tải lên: 21/07/2014, 17:20

... 3(s xx ′ 2 + s yy ′ 2 + s zz ′ 2 ) + 6(s 2 xy + s 2 yz + s 2 zy ) ≡ (s xx – s yy ) 2 + (s yy – s zz ) 2 + (s zz – s xx ) 2 + 6(s 2 xy + s 2 yz + s 2 zy ) = 6k 2 or 2Y 2 (A1 .26 b) which is the same ... s r 2 . So s r is also a stress invariant (it is known as the second stress invariant). From equation (A1 .25 ) s r 2 = s 2 xx + s 2 yy + s 2 zz +2( s 2...

Ngày tải lên: 21/07/2014, 17:20

... [W/mK] P01–10 50 16 20 6 8 < 2 6900 16 .2 1 .2 20 P05 25 49 16 15 8 12 < 2 7000 14 .2 1.8 20 P01–15 48 16 20 5 11 –* 7000 15.7 –* 20 P05 Total carbide: 94 Total metal: 6 –* 6100 17 .2 1.8 –* P10 Total ... Logic and Neural Network Handbook. New York: McGraw-Hill, pp. 22 .1 22 .8. Zimmermann, H. J. (1991) Fuzzy Set Theory and Applications. Boston: Kluwer. 40 0...

Ngày tải lên: 21/07/2014, 17:20

... 30 45 32 40 30–35 27 –30 ferritic stainless 21 24 22 25 23 26 24 27 25 29 austenitic stainless 14 17 15–18 17 21 22 25 26 29 high manganese 14 16 19 21 22 Aluminium pure, 1000 series 20 0 24 0 20 0 23 0 ... 20 0 40 0 600 800 Iron and steel pure iron* 85 64 50 38 31 0. 04 0 .25 C 52 60 48 – 54 42 45 35–37 29 –30 0 .25 –0.8C 51– 52 46 48 39– 42 33–35 29 –30 0.8–1....

Ngày tải lên: 21/07/2014, 17:20

... u˘ z d l hD ikj 21 10 + —— [ 121 0 ] 12 1 120 0000 (A2 .26 ) and 11 1 q*V e 1 qD ikj 1 hT 0 D ikj 1 {F} e = ——— {} – ——— {} – ——— {} (A2 .27 ) 4 1 3 1 3 1 10 0 Global assembly of equations (A2 .20 a), with ... (p r / τ max )(p r / τ max )/c Spherical 0. 42 2.6 6 .2 Cylindrical 0.39 2. 2 5.6 Conical 0.50 1.6 3 .2 Wedge-like 0.50 1.0 2. 0 Childs Part 3 31:3 :20 00 10 :43 am P...

Ngày tải lên: 21/07/2014, 17:20

... addition s r ′ 2 = s r 2 –3s m 2 =(s 1 2 + s 2 2 + s 3 2 ) – 3s m 2 (A1.5) After substituting for s m from equation (A1.1), 3s r ′ 2 =(s 1 – s 2 ) 2 +(s 2 – s 3 ) 2 +(s 3 – s 1 ) 2 (A1.6) The yield ... stresses: 1 s – 2 =— [ (s 1 – s 2 ) 2 +(s 2 – s 3 ) 2 +(s 3 – s 1 ) 2 ] = Y 2 or 3k 2 (A1.7) 2 330 Appendix 1 Fig. A1 .2 Geometrical representation...

Ngày tải lên: 21/07/2014, 17:20

... [mm] SVVBN2 525 M16 VBMM16 040 4 53 P10 49 0.10 0.33 5 12 17 35 0 .4 MVVNN2 020 M16 VNMG16 040 4 53 P10 45 0 .20 0 .48 4 11 17 35 0 .4 MVVNN2 020 M16 VNMG16 040 8 53 P10 38 0 .40 0.70 4 11 17 35 0.8 Childs Part 3 ... Applicability 1 C** 5 4 3 0.7856 2* K 16 04 08 0.75 34 3 C** 5 4 3 0.7 027 4 C** 5 4 3 0.7 027 *: this is coded in ISO standard; **: types of chip are diff...

Ngày tải lên: 21/07/2014, 17:20

... of Figure 9 .4, for a concave surface (r w – d R ) 2 – (r w – d e ) 2 = R 2 – (R – d e ) 2 } (9.9a) for a convex survace (r w + d R ) 2 – (r w + d e ) 2 = R 2 – (R – d e ) 2 Hence d e 2r w – d R for ... requirements. 27 4 Process selection, improvement and control Fig. 9.5 Milling of scroll surfaces Childs Part 3 31:3 :20 00 10:37 am Page 27 4 Optimization of machi...

Ngày tải lên: 21/07/2014, 17:20

... –0.000015(T–370) 2 a = 0.00 028 , m = 0.0016 Childs Part 2 28:3 :20 00 3:17 pm Page 24 2 24 6 Applications of finite element analysis Fig. 8.16 continued Childs Part 2 28:3 :20 00 3:17 pm Page 24 6 Figure 8.16. ... (2. 24d) V=100 m/min V =20 0 m/min m µ n* m µ n* Steel P 1.0 2. 31 3.89 1.0 2. 48 3 .22 Steel X 0.99 1 .25 3.05 0.96 1 .43 2. 06 Steel Y 0.97 0.76 5.98 0.99 1...

Ngày tải lên: 21/07/2014, 17:20

... (ICM) 21 3 Fig. 7. 12 Developed flow-chart of the iterative convergence method Childs Part 2 28:3 :20 00 3:15 pm Page 21 3 22 8 Applications of finite element analysis Fig. 8.1 continued Childs Part 2 28:3 :20 00 ... condi- tions as Figure 7. 14 Childs Part 2 28:3 :20 00 3:15 pm Page 21 6 s — = (C 1 + C 5 e — n )(G T /G 29 3 ) + C 2 exp[(–C 3 + C 4 1ne — ˘ )T] (7.19)...

Ngày tải lên: 21/07/2014, 17:20