The study manual is intended for students of bachelor degree studying at the petroleum engineering department. It meets the requirements of general teaching and studying trends of the machine mechanics courses in a foreign language. The study manual is aimed to create a systematic knowledge of the problems connected with parts machine designing. CONTENS 1. INTRODUCTION 8 1.1 The nature of mechanical design 8 1.2 Skills needed in mechanical design 12 1.3 Manufacturingstages 13 1.4 Designconsideration 13 2. MATERIALS IN MECHANICAL DESIGN 15 2.1 Summary 15 2.2 Propertiesofmaterials 16 2.3 Carbon and alloy steel and heat treatment 22 2.4 Cast iron 26 2.5 Aluminum 27 2.6 Zinc alloys 27 2.7 Copper, brass and bronze 28 3. TYPES OF LOADING AND STRESS RATIO 30 3.1 Static stress 30 3.2 Repeated and reversed stress 30 3.3 Fluctuating stress 32 3.4 Shock or impact loading 34 3.5 Endurance strength 35 3.6 Loading factors 36 4. KINDS OF TRANSMISSIONS. KINEMATIC AND POWER PARAMETERS 40 4.1 Kinds of gears and flexible power transmission elements 40 4.2 Transmission kinematic parameters and velocity ratio 47 4.3 Power flow and efficiency 49 4.4 Common velocity ratio (train value) for complex transmission 52 5. MANUFACTURING, MATERIALS AND ALLOWABLE STRESS FOR GEARS 55 5.1 Gearmanufactoring 55 5.2 Materials of gear 58 5.3 Typesofdestructionofteeth 59 5.4 Selectionofallowablestress 61 6. SPUR AND HELICAL GEARS 66 6.1 Spurgeargeometry 67 6.2 Internal gear 70 6.3 Helical gear geometry 72 6.4 The forces for spur and helical gears 76 6.5 The design calculation of spur and helical gears ... 77 6.6 Checking calculation 79 7. BEVEL GEAR 84 7.1 Types of bevel gear 84 7.2 Basic geometric relationships for straight bevel 87 7.3 The forces in bevel gear engagement 89 7.4 Design calculation of straight bevel gear 90 7.5 Checking calculation 91 8. WORM GEAR 94 8.1 Types of worm gearing geometrical relationships for cylindrical worm 94 8.2 Geometrical relationships for worm gear 97 8.3 Velocityratio 101 8.4 Worm and worm gear materials 101 8.5 Workability criteria. Calculation of allowable stresses 102 8.6 Forces in worm gear 105 8.7 Designofwormgear 106 8.8 Checking calculation 107 9. BELT DRIVES 111 9.1 Overviewandclassification 111 9.2 Typesofbeltdrives 113 9.3 Pulleys 116 9.4 Design of V-belt drive 117 9.5 Design of flat belt drive 121 10. CHAIN DRIVE 124 10.1 Chaindrivefeatures 124 10.2 Types and geometrical parameters of chains 125 10.3 Sprockets and geometrical parameters of chain drive 129 10.4 Design calculation of chain drive 130 10.5 Lubrication of chain draive 133 11. SHAFT DESIGN 135 11.1 Shafts and axles features 135 11.2 Shaft loading in transmission 137 11.3 Shaft design calculation 138 11.4 Fatigue strength checking calculation of the shafts 139 11.5 Stiffness checking calculation for shafts 141 12. ROLLING CONTACT BEARINGS 142 12.1 Construction of rolling contact bearings 142 12.2 Static and dynamic durability calculation of rolling contact bearings 149 12.3 Lubrication 153 13. COUPLING 159 13.1 Generalinformation 159 13.2 Types of coupling 161 14. KEYS, SPLINES AND PINNING 169 14.1 Typesofkeys 169 14.2 Checking calculation for key set 173 14.3 Splines 175 14.4 Pinning 177 15. FIT, LIMIT AND TOLERANCE 178 15.1 Generalinformation 178 15.2 Typesoffit 180 15.3 Geometric dimensioning and tolerancing 184 15.4 Surfacefinish 187 REFERENCES 189