Page 450 - Analysis and Design of Machine Elements

Index
428
Overlap ratio see Face contact ratio Preload 66, 314, 396
Overload clutches see Safety clutches Press fit 149, 253, 275
Overrunning clutch 382 Pressure angle 177, 236
Overturning moment 70 Pretension see Preload
Principal stresses 31
p Product development process 7
Parallel offset 366 Profile shift coefficient 177, 237
Permanent joints 60, 105–115 Proof load 66
Phosphor bronze 18 Proof strength 66
Pinion 173 Pulleys 121
Pinion and rack drive 174
Pins 97 q
clevis pins 98 Quality number, gear 180
cylindrical pins 97 Quenching 20
dowel pins 97
shear pins 98 r
split cotter pins 98 Rack 174
taper pins 97 Radial bearings 299
Pitch Reference circle 175
chain 150 Reference diameter 175, 236
screw threads 62 Relative stiffness 74
springs 393 Reliability 305
Pitch circle 175 Repeated stress 29
Pitch cone 197 Residual stresses 33, 110
Pitch diameter 175, 190, 198 Resonance 264, 396, 403
Pitch line velocity 178 Resultant force 74
Pitch point 175 Retaining ring 275
Pitting 52 Reynolds equation 341
Plain bearing see Sliding bearings Right or left hand rule 193, 241
Plastics 18, 76, 203 Rigid couplings
Poisson’s ratio 18, 51, 186 flanged coupling 367
Polar moment of inertia 270, 401 ribbed coupling 368
Polar section modulus 265 sleeve coupling 368
Polymers 18 Rigidity 12, 263
thermoplastics 18 Rigidity analysis
thermosets 18 shaft 268
Power 26 worm shaft 243
design 26, 136 Riveted joints 105
nominal 26 assembly 105
Power sources 3, 26 rivet pitch 107
prime mover 3 strength 107
secondary mover 3 Riveting 105
Power transmission 119 Rivets 105
by belt drives 119 allowable stress 107
by chain drives 147 crushing strength 107
by gear drives 171 failure modes 106
by wormgear drive 233 materials 107