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AME 324B Engineering Component Design (AME工程组件设计 324 b)
Chapter 14: Screws and Fasteners Screws
Fastening (more complex shapes = better function)
Non-permanent
Bolted
Permanent
Bolted
Welded
with several figures from:
Bonded MACHINE DESIGN - An Integrated Approach, 2ed by Robert L. Norton, Prentice-Hall 2000
Threads
Outline Thread is a helix that casuses the screw to advance into the workpiece
or nut when rotated
General Thread Nomenclature Types Single thread
L = p
Power Screws Double thread
L = 2p
Stresses in Threads
Preloading Fasteners/Joints
Fasteners in Shear
λ
p pitch : the distance between adjacent threads
d diameter (major)
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