Manual of engineering drawing. Second edition

Cover......Page 1
Half Title Page......Page 2
Title Page......Page 4
Copyright......Page 5
Contents......Page 6
Preface......Page 8
Acknowledgements......Page 10
1. Drawing office management and organization......Page 12
Drawing practice and the computer (CAD: Computer aided draughting and design)......Page 15
Why introduce BS 8888 and withdraw BS 308?......Page 16
2. Product development and computer aided design......Page 18
Computer aided draughting and design......Page 19
Technical product documentation......Page 21
Quality assurance......Page 22
3. CAD organization and applications......Page 24
Project development......Page 27
Parametric design......Page 28
Sheet metalwork application......Page 30
Pipework systems......Page 31
Typical AutoCAD drawings......Page 32
MechSoft......Page 39
First angle projection......Page 44
Third angle projection......Page 45
Projection symbols......Page 46
Reading engineering drawings......Page 47
Projection exercises......Page 49
Lines and linework......Page 56
Chain lines......Page 57
Lettering......Page 59
Care and storage of original drawings......Page 60
Isometric projection......Page 61
Oblique projection......Page 62
Assembly drawings......Page 65
Combined detail and assembly drawings......Page 67
Simplified drawings......Page 68
Machine drawing......Page 70
Drawing scales......Page 72
Scale used in geometric construction......Page 73
Abbreviations......Page 74
8. Sections and sectional views......Page 75
Revolved sections......Page 76
Local sections......Page 77
Sections in two parallel planes......Page 78
9. Geometrical constructions and tangency......Page 79
Tangency......Page 81
Methods of drawing an ellipse......Page 84
Right-hand cylindrical helix......Page 86
The epicycloid......Page 88
The hypocycloid......Page 89
11. True lengths and auxiliary views......Page 93
To draw a parabola from part of a cone......Page 98
To draw a rectangular hyperbola from part of a cone......Page 99
Interpenetration......Page 100
13. Development of patterns from sheet materials......Page 104
14. Dimensioning principles......Page 111
Dimensioning circles......Page 113
Dimensioning irregular curves......Page 114
Tapers......Page 115
Dimensioning tapers......Page 116
Dimensioning counterbores......Page 117
Dimensioning spotfaces......Page 118
Dimensioning for manufacture......Page 119
Complete graphical symbols......Page 120
Mandatory positions for complementary requirements......Page 121
Screw threads......Page 125
Draughting conventions associated with threads......Page 128
Clearance drill......Page 130
Drawing nuts and bolts......Page 131
Approximate construction for nuts and bolts (Figs 16.2 and 16.3)......Page 132
Machine screws......Page 135
Wing nuts......Page 138
Locking and retaining devices......Page 139
Thread-cutting screws......Page 143
Sunk keys......Page 145
Woodruff keys......Page 146
Dimensioning keyways (parallel keys)......Page 147
18. Worked examples in machine drawing......Page 148
2 Drill table......Page 149
5 Air engine......Page 151
6 Toolbox......Page 156
Solution notes......Page 158
19. Limits and fits......Page 164
Bases of fits......Page 166
Interpretations of limits of size in relation to form......Page 167
Geometrical tolerances......Page 171
Datums......Page 175
Dimensioning and tolerancing non-rigid parts......Page 178
Straightness......Page 179
Circularity (roundness)......Page 180
Profile tolerance of a line......Page 181
Parallelism......Page 182
Perpendicularity (Squareness)......Page 183
Angularity......Page 184
Circular run-out......Page 185
Position......Page 186
Symmetry......Page 188
Maximum material condition related to geometrical form......Page 190
Maximum material condition applied to squareness......Page 191
Maximum material condition applied to coaxiality......Page 192
Maximum material condition and perfect form......Page 193
The application of maximum material condition and its relationship with perfect form and coaxiality......Page 194
The application of maximum material condition to two mating components......Page 195
True-position (theoretical exact) dimensioning......Page 197
Cam follower motions......Page 201
Spur-gear terms (Fig. 24.15)......Page 206
Typical example using Professor Unwin’s approximate construction......Page 207
Helical gears......Page 208
Bevel-gear terms and definitions......Page 209
Worm gearing......Page 211
Copper-base alloys......Page 213
Flat springs......Page 214
Helical extension springs......Page 216
Disc springs......Page 218
Spring specifications......Page 219
Fatigue conditions......Page 220
26. Welding and welding symbols......Page 221
The application of welding symbols to working drawings......Page 222
General engineering graphical symbols......Page 225
Engineered systems......Page 227
Heating, ventilation and air conditioning systems......Page 229
Refrigeration systems and energy-saving applications......Page 243
Pneumatic systems......Page 246
Pneumatics and electronics......Page 254
Plain bearings......Page 260
Ball and roller bearings......Page 262
Application of bearings......Page 268
Seals......Page 271
Lubrication......Page 273
General convention and simplified representation......Page 274
Designing for adhesives......Page 275
Typical bonded joints......Page 276
Engineering applications......Page 278
Instant adhesives......Page 280
Structural applications......Page 281
The British Standards Institution......Page 283
International Organization for Standardization (ISO)......Page 284
31. Production drawings......Page 293
Further Standards for design, project and risk management of interest to engineers and manufacturers......Page 300
32. Drawing solutions......Page 302
Index......Page 307