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Cover
1
Contents
1
Preface
1
Acknowledgements
1
1. Drawing office management and organization
12
Engineering drawing practices
1
Drawing practice and the computer (CAD: Computer aided draughting and design)
1
Why introduce BS 8888 and withdraw BS 308?
1
2. Product development and computer aided design
18
Computer aided draughting and design
1
Technical product documentation
1
Access into the computer network
1
Quality assurance
1
3. CAD organization and applications
24
Computer and software purchase
1
Project development
1
Parametric design
1
Sheet metalwork application
1
Pipework systems
1
Communicating design concepts
1
Typical AutoCAD drawings
1
MechSoft
1
4. Principles of first and third angle orthographic projection
44
First angle projection
1
Third angle projection
1
Projection symbols
1
Drawing procedure
1
Reading engineering drawings
1
Projection exercises
1
5. Linework and lettering
56
Drawing paper sizes
1
Presentation
1
Lines and linework
1
Chain lines
1
Lettering
1
Drawing modifications
1
Care and storage of original drawings
1
6. Three dimensional illustrations using isometric and oblique projection
61
Isometric projection
1
Oblique projection
1
7. Drawing layouts and simplified methods
65
Single-part drawing
1
Collective single-part drawings
1
Assembly drawings
1
Collective assembly drawing
1
Design layout drawings
1
Combined detail and assembly drawings
1
Exploded assembly drawings
1
Simplified drawings
1
Machine drawing
1
Drawing scales
1
Scale used in geometric construction
1
Abbreviations
1
8. Sections and sectional views
75
Half sections
1
Revolved sections
1
Removed sections
1
Sections through thin material
1
Local sections
1
Components not drawn in section
1
Successive sections
1
Sections in two parallel planes
1
9. Geometrical constructions and tangency
79
Tangency
1
10. Loci applications
84
Methods of drawing an ellipse
1
The involute
1
Archimedean spiral
1
Right-hand cylindrical helix
1
Right-hand conical helix
1
The cycloid
1
The epicycloid
1
The hypocycloid
1
11. True lengths and auxiliary views
93
12. Conic sections and interpenetration of solids
98
To draw an ellipse from part of a cone
1
To draw a parabola from part of a cone
1
To draw a rectangular hyperbola from part of a cone
1
Interpenetration
1
13. Development of patterns from sheet materials
104
14. Dimensioning principles
111
Dimensioning of features not drawn to scale
1
Chain dimensioning and auxiliary dimensioning
1
Parallel dimensioning
1
Running dimensioning
1
Staggered dimensions
1
Dimensioning circles
1
Dimensioning radii
1
Dimensioning spherical radii and diameters
1
Dimensioning curves
1
Dimensioning irregular curves
1
Unidirectional and aligned dimensions
1
Angular dimensions
1
Tapers
1
Dimensioning tapers
1
Dimensioning chamfers
1
Dimensioning squares or flats
1
Dimensioning holes
1
Dimensioning counterbores
1
Dimensioning countersunk holes
1
Dimensioning spotfaces
1
Dimensioning for manufacture
1
Graphical symbols to indicate surface texture
1
Expanded graphical symbols
1
Complete graphical symbols
1
‘All surfaces around a workpiece’ graphical symbol
1
Composition of complete graphical symbols for surface texture
1
Mandatory positions for complementary requirements
1
15. Screw threads and conventional representations
125
Screw threads
1
Threads for power transmission
1
Draughting conventions associated with threads
1
Multiple threads
1
The application of thread conventions
1
Tapping drill
1
Clearance drill
1
16. Nuts, bolts, screws and washers
131
Drawing nuts and bolts
1
Approximate construction for nuts and bolts (Figs 16.2 and 16.3)
1
Machine screws
1
Machine screw nuts
1
Wing nuts
1
Locking and retaining devices
1
Thread-cutting screws
1
17. Keys and keyways
145
Sunk keys
1
Woodruff keys
1
Dimensioning keyways (parallel keys)
1
18. Worked examples in machine drawing
148
1 Bushed bearing bracket
1
2 Drill table
1
3 Cam operated clamp
1
4 Plug cock
1
5 Air engine
1
6 Toolbox
1
Solution notes
1
19. Limits and fits
164
Elements of interchangeable systems (Fig. 19.9)
1
Unilateral and bilateral limits
1
Bases of fits
1
Selected ISO fits„hole basis (extracted from BS 4500)
1
Interpretations of limits of size in relation to form
1
20. Geometrical tolerancing and datums
171
Geometrical tolerances
1
Datums
1
Dimensioning and tolerancing non-rigid parts
1
21. Application of geometrical tolerances
179
Straightness
1
Flatness
1
Circularity (roundness)
1
Cylindricity
1
Profile tolerance of a line
1
Profile tolerance of a surface
1
Parallelism
1
Perpendicularity (Squareness)
1
Angularity
1
Circular run-out
1
Total runout
1
Position
1
Concentricity and coaxiality
1
Symmetry
1
22. Maximum material and least material principles
190
Maximum material condition (MMC)
1
Least material condition (LMC)
1
Maximum material condition related to geometrical form
1
Maximum material condition applied to straightness
1
Maximum material condition applied to squareness
1
Maximum material condition applied to position
1
Maximum material condition applied to coaxiality
1
Maximum material condition and perfect form
1
The application of maximum material condition and its relationship with perfect form and squareness
1
The application of maximum material condition and its relationship with perfect form and coaxiality
1
The application of maximum material condition to two mating components
1
23. Positional tolerancing
197
True-position (theoretical exact) dimensioning
1
24. Cams and gears
201
Cam followers
1
Cam follower motions
1
Dimensioning cams
1
Spur gears
1
Spur-gear terms (Fig. 24.15)
1
Involute gear teeth proportions and relationships
1
Typical example using Professor Unwin’s approximate construction
1
Helical gears
1
Bevel gears
1
Bevel-gear terms and definitions
1
Worm gearing
1
25. Springs
213
Plain-carbon steels
1
Alloy steels
1
Stainless steels
1
High-nickel alloys
1
Copper-base alloys
1
Compression springs
1
Flat springs
1
Torsion springs
1
Leaf springs
1
Helical extension springs
1
Disc springs
1
Spring specifications
1
Wire forms
1
Corrosion prevention
1
Fatigue conditions
1
26. Welding and welding symbols
221
The application of welding symbols to working drawings
1
27. Engineering diagrams
225
General engineering graphical symbols
1
Engineered systems
1
Heating, ventilation and air conditioning systems
1
Refrigeration systems and energy-saving applications
1
Pneumatic systems
1
Pneumatics and electronics
1
28. Bearings and applied technology
260
Plain bearings
1
Ball and roller bearings
1
Application of bearings
1
Seals
1
Lubrication
1
General convention and simplified representation
1
29. Engineering adhesives
275
Designing for adhesives
1
The bond line
1
Typical bonded joints
1
Engineering applications
1
Instant adhesives
1
Structural applications
1
30. Related standards
283
The British Standards Institution
1
International Organization for Standardization (ISO)
1
31. Production drawings
293
Further Standards for design, project and risk management of interest to engineers and manufacturers
1
32. Drawing solutions
302
Index
1
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