Page 447 - Analysis and Design of Machine Elements
P. 447
lapping 203 flame hardening 20 Index 425
milling 204 induction hardening 20
shaping 204 nitriding 20
shaving 204 normalizing 20
Gear drive 171–225 quenching 20
centre distance 176 tempering 20
contact ratio 178, 191 through-hardening 20
efficiency 225 Helicalcoilsprings see Springs, helical coil
enclosed gearing 175 Helical compression springs see Springs,
lubrication 225 helical compression
open gearing 175 Helical extension springs see Springs, helical
pitch line velocity 178 extension
speed ratio 178 Helical gears see Gear, helical
standard installation 175 Helical torsion springs see Springs, helical
types of 173 torsion
Gearing see Gear drive Helix angle 190
Gear ratio 199, 239 Helix angle factor 243
Gear train 173 Herringbone gear 174
gear reducer 173 Hertz formula 51, 184, 194, 242
Geometrical discontinuities 32 Hertzian contact stress 50
German Institute for Standardization (DIN) Hexagonal nuts 65
22 High cycle fatigue 33
Gib-head keys 93 Hooke’s law 395
Goodman line 34 Hydrodynamically lubricated bearings
Gray cast irons 17, 350 332, 341
Grease 315, 352 axial pressure distribution 346
circumferential pressure distribution
h 345
Hardness 19 coefficient of friction variable 347
Brinell hardness (HBW or HB) 19 coefficient of load carrying capacity
Rockwell hardness (HRC) 19 345
Vickers hardness (HV) 19 coefficient of oil flow 347
Hardness conversion 19 diametrical clearance 344
Hard tooth surface 175 eccentricity 344
Hastelloy 17 eccentricity radio 344
Heat balance analysis 244, 347 film thickness 344
Heat dissipation of frictional energy 353
sliding bearing 347 frictional power rate 347
wormgear drive 246 mean temperature 348
Heat generation of minimum film thickness 344
sliding bearing 347 radial clearance 344
wormgear drive 246 relative clearance 344
Heat transfer coefficient 246, 347 safety factor 346
Heat treatment 19 Sommerfeld number 345
annealing 20 temperature rise 348
carburizing 20 width to diameter ratio 346
case hardening 20 wrap angle 346
