Drilling and Associated Technologies Part 1 pptx

... diameter. 11 ‘Deep-hole drilling and ‘Gun -drilling operations are virtu- ally the same, with the term Deep-hole drilling being the pre- ferred term in this text.  Chapter  3 .1 Drilling Technology ... typically ground twist drill points. Drilling and Associated Technologies  Figure 43. The principal technical drill performance criteria and factors associated with...

Ngày tải lên: 05/08/2014, 20:22

... 48. Symmetrical twist drill cross-sectional proles [After: Spur and Masuha, 19 81] . Drilling and Associated Technologies  • Land, or margin – via a rubbing, or frictional ac- tion. NB  e latter ... force (F) – lips (50%), land (10 %) and chisel point (40%), • Torque (M) – lips (80%), land (12 %) and chisel point (8%). NB ese contributing factors to axial force and...

Ngày tải lên: 05/08/2014, 20:22

... at 16 .8 m min 1 with a 0.2 mm rev 1 feed would produce 280 rpm at 57 mm min 1 , • Solid carbide twist drill – can be run at 61 m min 1 with a 0 .1 mm rev 1 feed would produce 1, 019 ... and trepanning. [Courtesy of Sandvik Coromant]. Drilling and Associated Technologies  Figure 56. Special-purpose multi-functional tooling can be designed and manufactured to...

Ngày tải lên: 05/08/2014, 20:22

... failure’. [Aer: Kalpakjian, 19 84]. Drilling and Associated Technologies  Figure 63. Twin-edged boring tooling. [Courtesy of Sandvik Coromant]. Drilling and Associated Technologies  ... nose radius and the inuence it has on the D OC . For Figure 62. Interchangeable cutting heads for machining internal features. [Courtesy of Sandvik Coromant]. Drilling and As...

Ngày tải lên: 05/08/2014, 20:22

... 7.5 9.4 12 .4 18 .3 25.2 IT10 5.7 7.6 12 .1 20.0 29.8 40.5 IT 11 8.6 11 .8 19 .1 31. 4 46.2 63.8 [Source: Sandvik Coromant (19 95)] . Drilling and Associated Technologies  Figure 66. Hard -part boring, ... to 3 /10 Over/up to 10 /50 Over/up to 50 /18 0 Over/up to 18 0/400 Over/up to 400/800 IT5 0.6 0.8 1. 3 2.2 3.2 4.5 IT6 0.9 1. 2 1. 9 3 .1 4.6 6.4 IT7 1. 4 1. 9...

Ngày tải lên: 05/08/2014, 21:20

... Vol. 11 4, 393–399, Nov. 19 92. Drilling and Associated Technologies  Table 6: Potential reaming problems and their possible causes, with some remedies Reaming problem: Possible causes and some ... Tools and Manufact., 477–484, Vol. 43, 2003. Benedict, B.W. and Lukens, W.P. An Investigation of Twist Drills; Part 1. Bull. Univ. o Illinois Eng’g Exp. Station, No. 10 3...

Ngày tải lên: 05/08/2014, 21:20

Ngày tải lên: 05/08/2014, 21:20

... land present, this helps to avoid fracture during the intermittent cutting action associated with a milling operation. A helix angle is present on many milling cutters 11 , be it a: side -and- 11 ... succesfully machined. [Courtesy of Sandvik Coromant] . Milling Cutters and Associated Technologies  .. Milling Cutter – Approach Angles Although cutting insert axial and rad...

Ngày tải lên: 05/08/2014, 21:20

... integrand in a nonlinear version of equation (18 .0 .1) or (18 .0.6) would be K(t, s, f(s)) instead of K(t, s)f(s); a nonlinear version of equation (18 .0.4) or (18 .0.8) would have an integrand K(t, ... 790 Chapter 18 . Integral Equations and Inverse Theory Sample page from NUMERICAL RECIPES IN C: THE ART OF SCIENTIFIC COMPUTING (ISBN 0-5 21- 4 310 8-5) Copyright (C) 19 88 -19 92 by Cam...

Ngày tải lên: 21/01/2014, 18:20

... equations : ( ) () {} () 15 15 42 12 0 60 352 10 13 2 2 opt dd d d U L ZZ θθ θ φθ = ⎡ ⎤ −+ + + +− ⎣ ⎦ (10 3a) () ()() () () {} () 2 35 2 0 35 42 12 0 12 11 60 352 10 13 2 2 ddd opt dd d d bU Q ZZ θξϕθ ... 34 00 2 233 0 21 1 4 4 31 1 2 61 21 3 2 21 2 12 0 dd d d ddd dd d d di bL bRLU θθ ξϕθϕ θ θθθ θθ ξϕθ θ θ ⎡⎤ −++ − − − − + − ⎢⎥ ⎣⎦ ⎡⎤ + −++ +− − + − = ⎢⎥ ⎣⎦ (70) Pa...

Ngày tải lên: 20/06/2014, 01:20