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 |  موضوع: كتاب The Elements of Machine Design Part I الأحد 19 ديسمبر 2021, 11:13 pm | |
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The Elements of Machine Design Part I
General Principles, Fastenings, and Transmissive Machinery
By
W. Cawthorne Unwin, F.r.s.
B.sc., Mbm. Inst. Civil Engineers, Hon. Mem. Inst. Mechanical Engineers
Hon. Mem. Am. Soc. Mechanical Engineers
Foreign Hon. Mem. Am. Academy Op Arts and Sciences
Professor Op Engineering at the Central Technical College
Kensington ; Formerly Professor Op Hydraulic and
Mechanical Engineering at the Royal Indian
Engineering College
و المحتوى كما يلي :
New Impression
(New Edition, Revised and Enlarged Xgox)
L O N G M a N S, G R E E N, a N D C O.
39 Paternoster Row, London
New York and Bombay
Text-books of Science
F. D.
Abney’s Photography. 134 Illustrations
Anderson’s the Strength of Materials and Struc
-
Tures. 66 Ihostratians
Ball's Elements of Astronomy. 130 Illustration*
Barry’s Railway Appliances. Az8 Illustrations
Bauerman's Systematic Mineralogy. 373 Illustrations 6 O
Bauerman’s Descriptive Mineralogy. 936 Illustrations 6 O
Glazebrook Ft Shaw’s Practical Physics. 134
Illustrations 7 6
Glazebrook’s Physical Optics. X83 Illustrations
Gore’s Art of Electro-metallurgy. 56 Illustrations... 6 O
Gribble’s Preliminary Survey. X33 Illustrations
Notas and Solutions 3 6
Griffin’s Algebra and Trigonometry
Holmes’s the Steam Engine, Axa Illustrations
Huntington Ft Mcmillan’s Metals: Their Proprrtirs
And Treatment. Xaa Illustrations
Jenkin's Electricity and Magnetism. X77 Illustrations 3 6
Maxwell’s Theory of Heat. 38 Illustrations
Merrifield’s Arithmetic and Mensuration
Miller’s Introduction to the Study of Inorganic
Chemistry. 7a Illustrations 3 *
Preece Ft Sivewrights Telegraphy. 967 Illustrations 6 O
Rutley’s the Study of Rocks. 6 Plates And88 Illustrations 4 6
Shelley’s Workshop Appliances. 3*3 Illustrations ... 5 O
Thomfi Ft Bennett’s Structural and Physiological Botany. 600 Illustrations
Thorpe’s Quantitative Chemical Analysis. 88
Illustrations
Thorpe Ft Muir’s Qualitative Chemical Analysis. 57 Illustrations
Tilden’s Chemical Philosophy, Xx Illustrations
With Answers to Problems
Unwin’s Elements of Machine Design:
Part I. General Principles. 345 Illustrations
Part Ii. Chiefly on Engine Details. 959 Illustrations
Watson’s Plane and Solid Geometry
Longmans, Green, Ft Co. 39 Paternoster Row, London
New York and Bombay.
Iindex
ACC
A CCELERATION curve, 41
Achard, 506, 520, 524
Adamson, 103, 256
Allen, 502
Alloys, 20
Aluminium, 18; bronze, 19
Angle iron, moment of inertia, 71 ;
proportions, 153
Angus Smith's process, 22
Annealing, 39
Arc of contact, 368
Areas, table of, 66
Arms of wheels, 416 ; of pulleys,
483
Axle-boxes, 320
Axles, 258, 263 ; journals of, 323
CAR
471; cotton, 475 ; chain, 476 ;
twisted, 478 ; guide pulleys for,
479
Bending, 56; table of bending
moments, 62 ; distribution of, 79 ;
of crank shafts, 281
Bevil gearing, 391; cutting teeth
of, 393 ; strength of, 411
Boiler flues, 100, 104 ; stays, 163
|
Boilers, strength of, 140, 159 ; plating, 155 ; taper of plates, 161 ;
staying, 167 ; bridge stays, 168
Bolted joints, 206 ; steam tight. T93
Bolts and nuts, 172 ; straining action
on, 182 ; friction of, 184 ; strain
due to tightening, 188 ; strength,
189 ; strength of screw thread,
; proportions, 197 ; table of,
; forms of, 201 ; locking ar-
1
195
ABBITT metal, 18 198 ;
Bach, 145 rangements, 204
Ball bearings, 334 , Box couplings, 286
Band. (See Belt.) , Brackets for shafts, 315
BarfFs process, 22 Brass, 17
Bauschinger, 37 Breaking strength, 27, 33, 45 ; table
Beams, symmetrical and unsym- of, 46
metrical sections, 76 ; of uniform Bridge stays, 168
strength, 85 Briggs, 439
Bearing resistance of rivets, 131 BritishAssociation screw thread, 178
Bearings, 227 Bronze, 15
Belt gearing, velocity ratio, 451 Bullivant, 503
Belts, material of, 4« ; endless, Butt riveting, 120
453; resistance to slipping, 459 ;
strength of, 465; working tension,
466 ; horse-power, 467 ; centri- ABLE (See Chain) ;
fugal tension, 470 ; single, double, 532
and combined, 471; joints of, Carboid bearings, 331
B
of hemp,552 Machine Design
CAS
Case-hardening, 11
Cast iron, 3, 4, 6
Catenary, £12
Caulking riveted joints, 118
Centrifugal tension in belts, 470 ;
in pulley rims, 482 ; of ropes,
GKA
Delta metal, 17
Diagram, stress strain, 30
Drawing, 23
Ductility of wrought iron, u ; of
steel, is
Dunkerley, 278
'
pCONOMICAL beam sections.
cl Clarke ^^, D, KT.. 488 ' 8 1 E•,1.|“}?“c* s,frength of maleria,s' 45 •
C^tifon4722 fenfofeSlicity o°frigidity' 90, 971 45 ;°ffric table- sssrr 350
Collapse Collar HoldSfcW bearings , resistance , 255.*to 3*.8100 ; rings, II Ex I^,LSon _ _'fi <^uplings ^, 294 P-ure. 43 ;
Columns, strength of, 94 ! pACTOR of safety, 27. 33
Compound stress, compression and Fairbaim, on repetition of
bending, 92 ; tension and bend- stress, 35 ; on collapse, 101
ing, 109 ; twisting and bending, Fastener for belts, 474
IIO Fatigue of materials, 39, 262
Compression, resistance to, 53 , Fencing of shafts, 279
Cone keys, 214 1 Fitting, 24
Cone vice coupling, 290 1 Flange coupling, 288
Continuous beams, 73 Hanged beam sections, 71, 73, 75
Copper Contraction , 15 ;ofeffect castings of ,temperature 5, 6 I|Flint '^at ,plates 435 , strength of, m
on strength, 19 I Hues, collapseof, tco; rules for, 105
Corrosion, 22 Fluidity, pressure of, 54
Corrugated flues, 107 I Footsteps. 320. 323; of glass, 327
Cotters, 217 ; strength of, 220 ; ar- Forging, 24
rangement of, 223 Foundation bolt, 219
Cotton belting, 475 Fox. furnace tubes, 107
Couplings for shafting, 286 ; dis- Friction coupling, 298; gearing,
engaging, 295 337. 35» : f°r variable speed, 357
Crane hook, 534 Friction, of riveted joints, 117, 141 ;
Cranked shafts, 269, 280; diagram of screw threads, 184; of journals,
of stress, 281 «8 ; of toothed gearing, 413; of.
Crank-pin journals, 254 screw gearing, 433 ; of lu lls, 460,
Crank-shaft journals, 253 J 4^9 1 ropes, 493
Cutting wheel teeth, 360, 393, 447 j
Cycloidal teeth, 374 ALVANISING, 22
Cylinders, strength of, 55, 140, 159 [ V_I Gam, 327
Gas threads, 178
T'\EFI.F.CTION, tableof, 62 ; of I Gearing chains, 539; strength of,
springs, 97
1
i I
54»Index 553
OTT
T ANG system of laying ropes,
JL* 501
Lap riveting, 120
Last's method, 372, 383, 447
Leather, 475
Leather belts, strength of, 465 ;
working tension, 466 ; horsepower of, 467 ; limits of stress,
468
Lewis, W., 413, 435, 465, 468
Lignum vitae bearings, 322, 325
Links, forms of eyes, 538
Load, live and -dead 28, 33 ; impulsive, 42
Lobed wheels,
Locking arrangements for bolts,
204 ; for cotters, 225
Longridge, 360, 407, 423
Lubrication, 234 ; forced, 238, 327
GEE
Gee’s gearing, 380
Geyclin, 327
Gib and cotter, 225
Gibson, 396, 448
Gordon, 93, 96
Goss, 352
Grashof, na
Guest, on compound stress, 108
Guide pulleys, 479
Gunmetal, 15
Gusset stays, 166
Gyration, radius of, table, 66
I TANGERS, 316
JL 1 Hardness of metals, 51 349
Hartnell, 99
Heaviness of materials, 52
Helical gearing, 420
Hildebrand’s coupling, 297
Hindiey worm, 436
Him, C. F., 230, 504, 523
Hodgkinson, 93
Hooke's joint, 300
Hopkinson, 546
Horse - power of belts, 467 ; of
rope gearing, 495 ; of wire ropes,
Ti /T ACBR1DE, 188
1V1 Malleable cast iron, 9
Manganese bronze, 17
Margin of riveted joints, 120, 130
Meneely bearing, 333
Metric screw threads, 177
1 Mill shafting, 273
| Milton, 268, 269, 281
Modulus of section, 60 ; table of,
66 ; of flanged beams, 76 ; for
torsion, 92
Moment of inertia, 60; table of, 66 ;
about parallel axes, 72
Morcom, 238
Morin, 228
Mortice wheels, 360
Moulding cast iron, 5, 24
526
Hyperboloidal gearing, 341
T NDENTATION, 51
X India-rubber, elasticity of, 295
Inertia, stress due to, 40
Involute teeth, 384
ENKIN. Fleeming, 356
Joint pins, 210
Journals, 227 ; friction of, 230 ;
pressure of seizing, 237 ; proportions, 240 ; strength, 243; limitg bearing pressure, 246, 248 ;
subjected to bending and torsion, 252 ; for carnage axles,
323
Junctions of riveted plates, 150
j
AVE of pulley, 487 ; of wheel,
Naville, 506
Nest gearing, 356
Neutral axis, 59
Newall, 393
Nuts, 199
in
JX ELLER, 516, 518, 543
Jtv. Kennedy, A. B. W.,
Keys, 2x 2 ; proportions, 216
Knuckle gearing, 391
Kynoch, roller bearing, 333
/''"VIL bath lubrication. 232
Oil tempering, 14, 262
Oldham coupling, 294
Ott, Karl von, 549
. 37i554 Machine Design
PAT STA
ous rope, 497 ; relative merits of
rope and toothed gearing, 500
Ropes, strength of, 492 ; weight of,
493 ; friction of, 493; comparison
of hemp and chain cables, 532
Ropes, wire. (See Wire Ropes, )
Rymering, 116
O CREW gearing, velocity ratio,
O 424, 427 ; efficiency of, 430,
434 ; power transmitted, 432 ;
proportions, 433; form erf teeth
and threads, 437 ; worm and
rack, 448 ; strength, 450
Screw threads, 172 ; special forms,
181 ; straining action on, 182 ;
friction of, 184 ; strain due to
screwing up, 188 ; strength, 189 ;
bearing pressure on,190; strength
of, 195
Screws transmitting motion. 190
Sections, table of areas, moments
of inertia and moduli, 66
Sellers, it6, 243, 413, 434 ; screwthread, 175; coupling, 290 ;
pedestal, 310 ; hanger, 316 ;
collar bearing, 330 ; worm and
rack, 448
Redtenbacher, 276 Set screw, 203
Renold, Hans, 546, 547 Shading, sectional, 25
Repetition of stress, 33 Shafting, 258; angle of twist, 259;
Resilience, 42 working stress, 260 ; examples
Reuleaux, 257, 512, 518 of designing, 263; transmitting
Reynolds, Osborne, 231 power, 266 ; tables of, 270 ; for
Rivets, forms of, 114, 119 ; size of, mills, 273; of varying diameter,
121 275 ; span of, 276
Riveted joints, 114 ; lap and butt, Shearing action, 58 ; distribution
120; proportionsof, 123; double I of, 79; in beams, table of, 62
and treble, 128 ; strength of, 129 ; j Shearing stress, 45, 53 ; table of,
single riveted joints, 142 ; double 1 46 ; in beams, 58 ; resistance to
riveted joints, 143 ; treble riveted 88 ; on planes at right angles,
joints, 144 ; joints designed for , 90 ; of rivets, 133, 136, 139
frictional resistance, 144 ; graphic Shop processes, 23
method of designing, 146 ; junc- Silicium bronze, 16
tions of plates, 152 j Silicon in cast iron, 3
Roller bearings, 332 I Skew bevils, 345
Rolled joists, strength of, 71 Sliding contact , 338, 358
Rolling circle, 377 Slip of belts, 468
Rolling contact, 338 ; variable velo- Spanners, 199
city ratio, 345 Speed cones, 455
Rope gearing, 491 ; centrifugal ten- Split pins, 224
sioti, 494 ; driving tension. 494 ; Springs, strength and deflection o4
horse-power of, 495 ; subdivision 97 ; plate and helical, 98
of power by, 497 ; with continu- Stahl, 506
PATTERNS for casting,
JL Pearce, Brothers, 493
Pedestals, 303; proportions, 308 ;
weight of, 309 ; self-lubricating,
4. 23
311
Phosphor bronze, 16
Physical constants, 44
Pins, 214
Pipe flanges, 207
Pitch, of rivets, iao ; of wheels, 361
Pitch chains, 546 ; table of, 548 ;
wheel for, 548
Pivot, 255 ; bearing, 325; with
discs, 330
Planished shafting, 276
Plasticity, 29
Poisson’s ratio, 54
Propeller shaft coupling, 290
Proportionality, limit of, 31
Pulleys, guide, 479 ; for belts, 482 ;
arms of, 483 ; split, 487 ; wrought
iron, 488 ; for rope gearing, 498 ;
for wire ropes, 523
Punching, 115
TJ AFFARD coupling, 295
± v Rankine, formula for struts,
96Index 555
STA ZIE
Toothed gearing, 358 ; material of,
359 ; limiting velocity, 408 ; wear,
41a ; friction of, 413;
and proportions of, 414
Torsion, resistance to, 90 ; of shafts,
Staking on, 213
Stays, 163 ; diagonal and gusset,
166 ; for tanks, 209
Stayed surfaces, 112
Steel, 12 ; castings, 13 ; tenacity
of, 13, 136; relation of composition and strength, 14 ; forgings,
strength of, 263
Stepped wheels, 420
Steps for journals, 306
Strain and stress, 29
Straining action, 26 ; due to power !
transmitted, 40 ; due to variation 1
of velocity, 40 ; due to change of
direction, 42
Strength, clastic and ultimate, of
materials, 44
Strength, of cast iron, 6 ; of
wrought iron, 11; of steel, 13;
of copper, 15 ; of bronze, 16 ; of
brass, 17 ; of aluminium, 19 ; of
metals at different temperatures,
19 ; general table of, 46 ; of riveted
joints, 129 ; of iron and steel for
riveted work, 135 ; of drilled and
punched plates, 137 ; of boilers,
140, 158, 160 ; of bolts, 189 ; of [
joint pins, 211 ; of keys, 215 ; 1
of wheel teeth, 401 ; of screw j
gearing, 450 ; of leather belts,
465 ; of ropes, 492 ; of chains,
530, 532 ; of pitch chains, 548
Stribeck, 335
Stud, 203
Suspension bearings, 327
Sutclfffe, 317
construction
266
Tower, Beauchamp, 230, 234, 236,
238, 241, 256
Towne, 533, 536
Tullis, 474, 476
Twisting moment, 91
WA
Wear of wheels, 412
Webb, 118, 171
Wedge gearing, 355
Weight of materials,
wheels, 419 ; of pulleys, 488 ; of
ropes, 493 ; of wire ropes, 503,
512 ; of chains, 532
Welds, strength 0C528
Welding, 9, 13
Weston coupling, 300
Weyrauch, 35
Whirling of shafts
White metal alloys, 17
Whitworth screw thread, 173
Willis, 380, 437
Wire, strength of, 21, 502
Wire ropes, 501 ; strength of, 502,
52 ; of toothed
. 277
5°5
Wire rope transmission, 501 ;
stresses in, 507 ; centrifugal tension, 510 ; driving effort, 511
Wohler's experiments, 34, 48
Work of deformation, 42 ; of compression and tension, 54
Working stress, 32, 44, 48 ; tables
of, 49 ; m boilers, 159 ; in shafting, 261
Worm and rack, 448
Worm and wheel, 428 ; efficiency of,
432 ; proportions of, 433 ; thrust
of, 435 ; form of teeth, 437 ; designing, 442 ; strength of, 450
Wrought iron, 9; qualities and
forms of, 10 ; strength of, 11, 136
T'
'AYLOR, 468, 469
JL Teeth of wheels, proportions,
363 ; form, 366 ; obliquity of
action, 371 ; cycloidal, 374 ; in- j
volute, 385 ; summary of curves,
396
Telodynamic transmission, 504 ; deflection, 519 ; simpler equations,
520 ; efficiency, 522 ; cost of , 527
Temperature, expansion due to, 43;
effect on strehgth of metals, 19
Tempering steel, 13
Tension, resistance to, 53
Tests of cast iron, 6
Thomeycroft, 239
Thrust bearings, 255
Thwaite, 489 2IfcGLER, 522, 526
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