Page 16 - Shigley's Mechanical Engineering Design

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Contents xiii
11–11 Lubrication 603 13–17 Force Analysis—Worm Gearing 714
11–12 Mounting and Enclosure 604 Problems 720
Problems 608
14 Spur and Helical Gears 733
12 Lubrication and Journal 14–1 The Lewis Bending Equation 734
Bearings 617 14–2 Surface Durability 743
14–3 AGMA Stress Equations 745
12–1 Types of Lubrication 618
14–4 AGMA Strength Equations 747
12–2 Viscosity 619
14–5 Geometry Factors I and J (Z I and Y J ) 751
12–3 Petroff’s Equation 621
14–6 The Elastic Coefficient C p (Z E ) 756
12–4 Stable Lubrication 623
14–7 756
12–5 Thick-Film Lubrication 624 Dynamic Factor K v
14–8 758
12–6 Hydrodynamic Theory 625 Overload Factor K o
14–9 Surface Condition Factor C f (Z R ) 758
12–7 Design Considerations 629
14–10 759
12–8 The Relations of the Variables 631 Size Factor K s
14–11 Load-Distribution Factor K m (K H ) 759
12–9 Steady-State Conditions in Self-Contained
14–12 761
Bearings 645 Hardness-Ratio Factor C H
12–10 Clearance 648 14–13 Stress Cycle Life Factors Y N and Z N 762
12–11 Pressure-Fed Bearings 650 14–14 Reliability Factor K R (Y Z ) 763
12–12 Loads and Materials 656 14–15 Temperature Factor K T (Y θ ) 764
12–13 Bearing Types 658 14–16 Rim-Thickness Factor K B 764
12–14 Thrust Bearings 659 14–17 Safety Factors S F and S H 765
12–15 Boundary-Lubricated Bearings 660 14–18 Analysis 765
Problems 669 14–19 Design of a Gear Mesh 775
Problems 780
13 Gears—General 673
15 Bevel and Worm Gears 785
13–1 Types of Gear 674
15–1 Bevel Gearing—General 786
13–2 Nomenclature 675
15–2 Bevel-Gear Stresses and Strengths 788
13–3 Conjugate Action 677
15–3 AGMA Equation Factors 791
13–4 Involute Properties 678
15–4 Straight-Bevel Gear Analysis 803
13–5 Fundamentals 678
15–5 Design of a Straight-Bevel Gear Mesh 806
13–6 Contact Ratio 684
15–6 Worm Gearing—AGMA Equation 809
13–7 Interference 685
15–7 Worm-Gear Analysis 813
13–8 The Forming of Gear Teeth 687
15–8 Designing a Worm-Gear Mesh 817
13–9 Straight Bevel Gears 690
15–9 Buckingham Wear Load 820
13–10 Parallel Helical Gears 691
Problems 821
13–11 Worm Gears 695
13–12 Tooth Systems 696 16 Clutches, Brakes, Couplings,
13–13 Gear Trains 698
13–14 Force Analysis—Spur Gearing 705 and Flywheels 825
13–15 Force Analysis—Bevel Gearing 709 16–1 Static Analysis of Clutches and Brakes 827
13–16 Force Analysis—Helical 16–2 Internal Expanding Rim Clutches and
Gearing 712 Brakes 832