loop free link metrics for proactive link state routing in wireless ad hoc networks
MICROMACHINING TECHNIQUES FOR FABRICATION OF MICRO AND NANO STRUCTURES pptx
... decades, fiber gratings including fiber Bragg gratings (FBGs) and long-period gratings (LPGs) have been manufactured mainly by modifying the core refractive index using interferometric or pointby-point ... dimensions of more than in the range of micrometer or above centimetre scale are being used for the machining process A best example for the bulk machining process is that the thread forming process on ... micromachining Lithography or etching methods are not capable of making true 3D structures e.g free form surfaces and also limited in range of materials Mechanical machining is capable of making free...
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formulas and calculations for drilling production and workover 2e
... three strings of tubing: Dh = casing-9-98 i n lb/ft TI = tubing No 1-3-1/ 2in T2 = tubing No 2-3-1/ 2in T3 = tubing No 3-3-1/ 2in ID = 8.68 1in OD = 3. 5in OD = 3. 5in OD = 3. 5in + 3S2 + 3S2) 183.35 ... Determine volumes and strokes for the following: Drill pipe-5. 0in. -l9.5 Inside diameter Length lb/ft = 4.27 6in = 9400ft Drill collars 8,Oin OD Inside diameter Length = 3. 0in = 600ft Casing-l3-3/8 in. -54.5 ... + (T212] Example: Using three strings tubing of same size: Dh = casing-9-5/8 i n l b l f t ID TI = tubing No 1-3-1/ 2in OD TI = tubing No 2-3-1/ 2in OD T, = tubing No 3-3-1/ 2in OD - Annular capacity...
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Tài liệu Neural Networks and Neural-Fuzzy Approaches in an In-Process Surface Roughness Recognition System for End Milling Operations pptx
... review, in addition to communication with leading private industrial research and development laboratories in the state of Iowa (including Winnebago Co in Forest City; Delavan Inc in Des Moines; ... cutting industries to reduce manufacturing costs by eliminating the relatively inefficient off-line quality control aspect of surface roughness inspection Therefore, reductions in manufacturing ... representation of the training data set Therefore, a total of 492 data sets were available for training In this research, 92 data sets were selected randomly from the 492 training data In addition, 36 experimental...
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Tài liệu Drilling Down: The Gulf Oil Debacle and Our Energy Dilemma pot
... any rationale for drilling in these inhospitable environments must take into account the amount of oil (or energy in some form) that is needed to build and maintain an offshore drilling rig such ... equilibrium, including living organisms and societies We must breathe, drink, and eat for energy to flow continuously through our living bodies and maintain their highly complex, organized structures Unfortunately, ... Published in the United States by Copernicus Books, an imprint of Springer Science+Business Media Copernicus Books Springer Science+Business Media 233 Spring Street New York, NY 10013 www.springer.com...
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Drilling and Associated Cutting Tool Technology Industrial Handbook_1 pdf
... responsible for inducing chip flow in a direction normal to the lips in accordance with Stabler’s Law The increasing chip flow obliquity can be seen in Fig 45a, by observing the flow lines emanating ... they intermingle with the main cutting edge chips This fact has been substantiated by force and energy analysis, based on a combination of cutting and extruding behaviour under the chisel point, ... established: firstly, the main cutting edge, or lips; secondly at the intersection of the clearance and main cutting edge – termed the chisel edge In fact for a twist drill, the cutting process can be...
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Drilling and Associated Cutting Tool Technology Industrial Handbook_3 ppt
... by the single insert variety The multi-insert counter-boring heads, can have their inserts finely diametricallyadjusted by means of precision wedge and radial adjusting screws A trepanning operation ... diameter22, which in reality, amounts to a ‘fine-boring’ operation, giv- NB Double-sided cutting inserts are available, but are mainly used for milling operations One major advantage that indexable ... is undertaken in one operation, but instead of machining the complete hole, only part of the hole is cut, leaving a core (Fig 55b) For large workpiece dimension machining, a trepanning operation...
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Drilling and Associated Cutting Tool Technology Industrial Handbook_4 pot
... For more information concerning boring bar selection, see Appendix 1b, for the ISO ‘code key’ for ‘solid’ boring bars Insert Selection – Decisions Apart form the boring bar’s lead angle, an insert’s ... setting-up times In Fig 62a and b, are illustrated single-point interchangeable boring insert tooling, with Fig 62a giving typical length-to-diameter (i.e L/D) ratios for actual boring and clamping ... Later boring bar versions, utilised indexable cutting inserts, or replaceable heads (Fig 61) Boring bars having replaceable heads are versatile, with the same bar allowing different cutting head designs...
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Drilling and Associated Cutting Tool Technology Industrial Handbook_5 potx
... workpiece and insert, resulting in lower tangential and radial cutting forces For fine-boring applications, a good start point is to choose an insert with a 0.4 mm nose radius, with a 0.5 mm DOC ... engineering problems, and more specifically, in the performance and robustness of certain types of ‘Neural networks , the goal of obtaining some form of real-time monitoring and control in the ... stability, alleviating many of the potential problematic in- service machining conditions 3.2.3 Multiple-Boring Tools Twin cutting insert tooling, usually consists of a cylindrical shank with...
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Drilling and Associated Cutting Tool Technology Industrial Handbook_6 pdf
... Floating Reaming 139 • Cylinder head tappet rail drill-reaming – in a single operation, • Cylinder head valve seats and guides – machining both features, in the parent bore and finish machining, ... line boring tool‘, for the machining of quite long crankshaft bearing housings on both automotive engine blocks and bored cam-seatings for cylinder heads This uniquely-designed ‘Telescopic line-boring ... this latter feature requiring controlled ‘radial infeed’ of the cutting/reaming insert NB The special-purpose ‘radial-infeed’ tooling necessary for the satisfactory machining of the cheek faces...
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Drilling and Associated Cutting Tool Technology Industrial Handbook_7 docx
... dividing the machining process into either, roughing, or finishing reaming operations Low cutting speed together with high feedrates, in association with good lubrication agents offering adequate ... Kaczmarek, J Principles of Machining by Cutting Abrasion and Erosion Peter Pregrinus Pub (Warsaw), 1976 Kalpakjian, S Manufacturing Processes for Engineering Materials Addison-Wesley Longman, Inc., 1997 ... Feb 1955 Oxford Jr., C.J Fundamentals of Drilling, Tapping and Reaming In: Influence of Metallurgy in Hole-making Operations, ASM Pub., 1–18, 1978 Patterson, H Strictly Boring Cutting Tool Eng’g,...
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Associated Technologies And Milling Cutter by J Smith_2 doc
... of utilising button-style milling inserts, is the spindle power requirement is greater With increasing insert inclination of the approach angles the chip thins, causing the cutting forces to ... action could result in over-loading the cutting inserts and breaking their edges 19 ‘Radial chip-thinning’ , is the effect of taking a radial DOC (ae) of less than 25% of the milling cutter’s diameter ... edge inclination increases, the chip becomes both longer and thinner for the same DOC, or ‘ae’ (Fig 83b), with the load being spread over longer edge length – resulting in smoother cutting Larger...
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Associated Technologies And Milling Cutter by J Smith_4 pptx
... Manufacturing Eng’rs., Tool and Manufacturing Engineers Handbook – Vol – Machining 4th Ed., SME Pub., Dearborn, Mich., 1983 Smith, G.T Advanced Machining – The Handbook of Cutting Technology, IFS/Springer ... 1989 Smith, G.T CNC Machining Technology Springer Verlag, 1993 Tlusty, G Manufacturing Processes and Equipment Prentice Hall, 2000 Usui, E Modern Machining Theory [i.e In Japanese] Kyoritu-shuppan ... Modern Metal Cutting – A Practical Handbook AB Sandvik Coromant Pub., 1994 Oxley, P.L.B Mechanics of Machining Ellis Horwood Pub., 1989 Shaw, M.C Metal Cutting Principles Oxford Univ Press, 1989...
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Báo cáo hóa học: " Preparation and Characterization of Nano structured Materials from Fly Ash: A Waste from Thermal Power Stations, by High Energy Ball Milling" potx
... present [11], in various fields including landfills, cement making and concrete product making such as bricks, blocks and tiles, in road making, in filling of the mines Attempts have been made earlier ... fly ash thus obtained may be characterized using sophisticated analytical techniques Thus, nano level mineral filler can be used as reinforcing filler in making polymer composites, in particular rubber ... using ASTM meshes ranging in size from 72 to 350 Fly ash fractions after passing through 200 mesh has been taken for ball milling since it gave 45% by weight of the total fly ash taken for sieving,...
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Drilling and Associated Technologies pot
... nose radius and DOC is used This smaller boring insert nose radius, minimises contact between the workpiece and insert, resulting in lower tangential and radial cutting forces For fine-boring applications, ... For more information concerning boring bar selection, see Appendix 1b, for the ISO ‘code key’ for ‘solid’ boring bars Insert Selection – Decisions Apart form the boring bar’s lead angle, an insert’s ... line boring tool‘, for the machining of quite long crankshaft bearing housings on both automotive engine blocks and bored cam-seatings for cylinder heads This uniquely-designed ‘Telescopic line-boring...
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Drilling and Associated Technologies docx
... For more information concerning boring bar selection, see Appendix 1b, for the ISO ‘code key’ for ‘solid’ boring bars Insert Selection – Decisions Apart form the boring bar’s lead angle, an insert’s ... line boring tool‘, for the machining of quite long crankshaft bearing housings on both automotive engine blocks and bored cam-seatings for cylinder heads This uniquely-designed ‘Telescopic line-boring ... setting-up times In Fig 62a and b, are illustrated single-point interchangeable boring insert tooling, with Fig 62a giving typical length-to-diameter (i.e L/D) ratios for actual boring and clamping...
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Milling/Drilling machine pps
... In order to use mill cutters you will need a R-8 collet holder You can order this from Harbor Freight...
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Drilling and Associated Technologies Part 1 pptx
... responsible for inducing chip flow in a direction normal to the lips in accordance with Stabler’s Law The increasing chip flow obliquity can be seen in Fig 45a, by observing the flow lines emanating ... of Twist Drilling Holes Introduction The term ‘drilling’ refers to all production techniques for the manufacture of cylindrical holes in workpieces using chip-making cutting tools, for short-hole10 ... twist drill points 95 96 Chapter • Web-thinning – as its name implies, the chisel point edges of the drill, increasing both tool life and improvis web-thinned/notched, by regrinding to reduce...
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Drilling and Associated Technologies Part 2 ppt
... example when machining free- cutting steel grades cutting speeds of up to 400 m min–1 are possible, whereas when drilling low-silicon aluminium grades cutting speeds of 600 m min–1 can be achieved ... toughened grade is used for the inner insert and a wear-resistant grade for the outer insert However, some discretion should be used when utilising indexable drills with mixed cutting inserts, so ... Remaining cutting force (∆Fc) – generated through greater wear rates at the periphery of the outer cutting insert, • Passive force (Fp) – generated by the corner radius of the outer cutting insert...
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Drilling and Associated Technologies Part 3 potx
... radial cutting forces generated while drilling deep holes By locating the cutting inserts on both sides of the drill head, the greater percentage of radial forces are negated at these pads 36 Drill ... important for workpieces having very long length-to-diameter ratios, • Facilitates tool clamping – enabling the tool to be held in a three-jaw chuck for convenient regrinding on a suitable cutter-grinder ... cutting fluid is fed forward to the drill head, while the remainder is forced through a groove in the rear section of the inner tube A ‘negative pressure’ occurs in the front portion of the inner...
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