65配2 Budynas-Nisbett:Shigley's I Design of Mechanical 13.Gears-General T©The McGraw-Hfll Mechanical Engineering Elements Companies,2008 Design,Eighth Edition 13 Gears-General Chapter Outline 13-1 Types of Gears 654 13-2 Nomenclature 655 13-3 Conjugate Action 657 13-4 Involute Properties 658 13-5 Fundamentals 658 13-6 Contact Ratio 664 13-7 Interference 665 13-8 The Forming of Gear Teeth 667 13-9 Straight Bevel Gears 670 13-10 Parallel Helical Gears 671 13-11 Worm Gears 675 13-12 Tooth Systems 676 13-13 Gear Trains 678 13-14 Force Analysis-Spur Gearing 685 13-15 Force Analysis-Bevel Gearing 689 13-16 Force Analysis-Helical Gearing 692 13-17 Force Analysis-Worm Gearing 694 653Budynas−Nisbett: Shigley’s Mechanical Engineering Design, Eighth Edition III. Design of Mechanical Elements 13. Gears — General 652 © The McGraw−Hill Companies, 2008 Chapter Outline 13–1 Types of Gears 654 13–2 Nomenclature 655 13–3 Conjugate Action 657 13–4 Involute Properties 658 13–5 Fundamentals 658 13–6 Contact Ratio 664 13–7 Interference 665 13–8 The Forming of Gear Teeth 667 13–9 Straight Bevel Gears 670 13–10 Parallel Helical Gears 671 13–11 Worm Gears 675 13–12 Tooth Systems 676 13–13 Gear Trains 678 13–14 Force Analysis—Spur Gearing 685 13–15 Force Analysis—Bevel Gearing 689 13–16 Force Analysis—Helical Gearing 692 13–17 Force Analysis—Worm Gearing 694 13Gears—General 653