MECHANICAL ASSEMBLY

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Snap FitsJoining of two parts in which mating elements possessa temporary interference during assembly, but onceassembled they interlockDuring assembly, one or both parts elasticallydeform to accommodate temporary interferenceUsually designed for slight interference afterassembly•Originally conceived as a method ideally suited forindustrial robotsEureka! –it’s easier for humans too©2002 John Wiley & Sons, Inc. M. P. Groover, “Fundamentals of Modern Manufacturing 2/e”
Figure 33.13 - Snap fit assembly, showing cross-sections of twomating parts: (1) before assembly, and (2) parts snapped together©2002 John Wiley & Sons, Inc. M. P. Groover, “Fundamentals of Modern Manufacturing 2/e”
Page 1 and 2: MECHANICAL ASSEMBLY•Threaded Fast
Page 3 and 4: Products of Mechanical Assembly•M
Page 5 and 6: Reasons Why Mechanical Assembly isO
Page 7 and 8: Screws, Bolts, and NutsScrew - exte
Page 9 and 10: Some Facts About Screws and Bolts
Page 11 and 12: Types of Screws•Greater variety t
Page 13 and 14: Self-Tapping Screws•Designed to f
Page 15 and 16: Figure 33.6 - Screw thread inserts:
Page 17 and 18: Figure 33.8 - Types of washers: (a)
Page 19 and 20: Figure 33.9 - Typical stresses acti
Page 21 and 22: Tools and Methods for ThreadedFaste
Page 23 and 24: RivetsUnthreaded, headed pin used t
Page 25 and 26: Rivets -Applications and Advantages
Page 27 and 28: Interference FitsAssembly methods b
Page 29: Shrink and Expansion FitsAssembly o
Page 33 and 34: Figure 33.14 - Retaining ring assem
Page 35 and 36: StaplingPreformed U-shaped staples
Page 37 and 38: Placement of a component into a mol
Page 39 and 40: Integral FastenersComponents are de
Page 41 and 42: SeamingEdges of two separate sheetm
Page 43 and 44: DFA Guidelines•Use modularity in

MECHANICAL ASSEMBLY

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