Mechanical Design of Machine Elements by Graphical Methods

Mechanical Design of Machine Elements by Graphical Methods
اسم المؤلف
Majid Yaghoubi · Hamed Tavakoli
التاريخ
22 سبتمبر 2024
المشاهدات
104
التقييم
(لا توجد تقييمات)
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Mechanical Design of Machine Elements by Graphical Methods
Majid Yaghoubi · Hamed Tavakoli
Contents
1 Torque . 1
1.1 Introduction . 1
1.2 Design Method 1
1.3 Equations . 3
2 Hertzian Contact Stress 5
2.1 Introduction . 5
2.2 Design Method 6
2.3 Equations . 8
Reference . 8
3 Press-Connect Joints 9
3.1 Introduction . 9
3.2 Design Methods 10
3.2.1 Estimation of the Minimum Interference (Δmin) . 10
3.2.2 Estimation of the Maximum Interference (Δmax) 12
3.2.3 Standard Interferencen . 14
3.2.4 Heating Elements for the Assembly . 16
3.2.5 M.Y Method (The Proposed Method in This Book) 17
3.3 Equations . 19
References 19
4 Welded Joints . 21
4.1 Introduction . 21
4.2 Design Methods 22
4.2.1 Axial Loading 23
4.2.2 Bending Loading . 25
4.2.3 Torsional Loading (Welded Shaft) . 30
4.2.4 Combined Loading 32
4.3 Equations . 33
References 33
ixx Contents
5 Bolts . 35
5.1 Introduction . 35
5.2 Design Methods 36
5.2.1 Method I 36
5.2.2 Method II 41
5.2.3 Method III (M.Y Method) 48
5.3 Equations . 49
References 51
6 Power Screws . 53
6.1 Introduction . 53
6.2 Design Methods 54
6.2.1 Method I 54
6.2.2 Method II (M.Y Method) 60
6.3 Equations . 62
References 63
7 Shafts 65
7.1 Introduction . 65
7.2 Design Methods 66
7.2.1 Rough Estimation (M.Y Method) . 66
7.2.2 Precise Design (Checking) . 70
7.3 Equations . 75
References 76
8 Rectangular Keys . 77
8.1 Introduction . 77
8.2 Design Methods 78
8.2.1 Method I 78
8.2.2 Method II 80
8.2.3 Method III (M.Y Method) 82
8.3 Supplementary Material . 84
8.4 Equations . 84
References 85
9 Splines . 87
9.1 Introduction . 87
9.2 Design Method 88
9.3 Equations . 92
References 93
10 Conical Joints . 95
10.1 Introduction . 95
10.2 Design Methods 96
10.2.1 Method I 96
10.2.2 Method II 98
10.3 Equations . 101Contents xi
References 101
11 Couplings 103
11.1 Introduction . 103
11.2 Design Method 103
12 Flanged Couplings 107
12.1 Introduction . 107
12.2 Design Methods 108
12.2.1 Method I 108
12.2.2 Method II (M.Y Method) 111
12.3 Equations . 112
13 Universal Joints . 113
13.1 Introduction . 113
13.2 Design Methods 114
13.2.1 Relationship Between Torque and U-joint Width 114
13.2.2 Estimation of the Bearing Life 115
13.3 Equations . 117
References 117
14 Pin Joints . 119
14.1 Introduction . 120
14.2 Design Methods 120
14.2.1 Shear Pin 120
14.2.2 Clevis Joint 125
14.2.3 Dowel Pin . 131
14.3 Equations . 138
References 139
15 Shafts and Their Associated Elements All Together . 141
15.1 Introduction . 141
15.2 Design Method (M.Y Method) . 142
15.3 Equations . 149
Reference . 152
16 V-Belts . 153
16.1 Introduction . 153
16.2 Design Methods 154
16.2.1 Method I 154
16.2.2 Method II (M.Y Method) 161
16.3 Belt Tensioning 161
16.4 Equations . 163
References 164xii Contents
17 Timing Belts 165
17.1 Introduction . 165
17.2 Design Methods 166
17.2.1 Initial Estimate . 166
17.2.2 Checking Estimations . 172
17.2.3 Belt Installation 175
17.3 Equations . 176
References 177
18 Chain Drives 179
18.1 Introduction . 180
18.2 Design Methods 180
18.2.1 Rough Design 181
18.2.2 Accurate Design 183
18.2.3 Sag Adjustment for Roller Chains . 187
18.2.4 Design Based on the Tensile Strength of Chains . 188
18.2.5 Lubrication Method . 190
18.2.6 M.Y Method . 191
18.2.7 Estimating the Minimum Center Distance 192
18.3 Supplementary Graphs and Equations . 193
18.4 Equations . 194
References 196
19 Spur and Helical Gear Drives 197
19.1 Introduction . 198
19.2 Design Methods 199
19.2.1 Estimating the Width and Pitch Circle Diameter
of Pinion 201
19.2.2 Estimating the Teeth Number of Pinion,
and Module 206
19.2.3 Specifying the Gear Quality 208
19.2.4 Specifying the Helix Angle . 209
19.2.5 Determining the Center Distance 211
19.2.6 M.Y Method . 213
19.3 Supplementary Material . 214
19.3.1 The Material Properties of Gears 214
19.3.2 The Module and Center Distance for Automobile
Gearboxes . 216
19.3.3 The Transmission Ratio in Multi-Stage Gearboxes . 216
19.4 Equations . 219
References 221Contents xiii
20 Bevel Gear Drives . 223
20.1 Introduction . 224
20.2 Design Methods 224
20.2.1 The Pinion Design 224
20.2.2 Specifying the Gear Quality 233
20.2.3 M.Y Method I 234
20.2.4 M.Y Method II . 236
20.3 Equations . 237
References 240
21 Wormgear Drives . 241
21.1 Introduction . 242
21.2 Design Methods 242
21.2.1 Method I 243
21.2.2 Method II (Suggested Method) . 247
21.3 Equations . 251
References 252
22 Rolling Contact Bearings 255
22.1 Introduction . 256
22.2 Design Methods 256
22.2.1 Equivalent Load 256
22.2.2 Bearing Life . 258
22.2.3 Allowable Shaft Speed for Rolling Bearings 262
22.2.4 Tolerances . 264
22.3 Supplementary Material . 264
22.4 Equations . 271
References 271
23 Hydraulic Systems 273
23.1 Introduction . 274
23.2 Design Methods 274
23.2.1 The Piston and Rod Diameters of the Hydraulic
Cylinder . 275
23.2.2 The Maximum Force of the Hydraulic Cylinder . 276
23.2.3 The Hydraulic Pump Flow Rate and the Cylinder
Speed . 277
23.2.4 The Diameter of Hydraulic Pipes and the Required
Power of Pumps 278
23.2.5 The Maximum Allowable Stroke of Hydraulic
Cylinders 280
23.2.6 The Length of Hydraulic Cylinders 281
23.2.7 The Hydraulic Cylinder Thickness 282
23.3 Equations . 284
Reference . 285

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