Lect 14P. 1

1
Sectioning of Assembly Drawings

• Lecture 14

2
Topics for Today

• QUIZ Tomorrow Sections
• Review - Sectioning of Revolved Solids
• Assembly Drawings
• Wednesday/Thursday Lab 5
• Material Joining Beam Bending
• Read the lab notes and procedures before coming
  to lab

3
Sectioning Solid Revolutions Assembly Drawings

• Tips for sectioning solid revolutions
• What is an assembly drawing
• How to section multiple parts in one drawing
• What parts not to section

4
Review - Tips For Sectioning Solid Revolutions

• Ribs, webs and other thin features are normally
  not sectioned
• Align (rotate into true size shape)
• Ribs
• Bolt holes
• Lugs
• Spokes

5
Assembly Drawing
3
1

• Shows how multiple parts fit together
• Orthographic
• Pictorial (1)
• Exploded (2)
• Bill of Materials (3)

2
6
Orthographic Sectioned Assembly

• Note cross-hatching style of adjacent parts

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Conventions for Standard Parts

• Not Sectioned show all exterior features for
• Shafts
• Bearings, roller or ball
• Gear Teeth
• Threaded Fasteners, Nuts and Bolts
• Rivets
• Ribs, Spokes and Lugs
• Washers
• Keys and Pins

8
Example Sectioned Assembly
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Broken Out Assembly With B.O.M.
10
Assignments

• Dwg 27 T49
• Complete section views
• Due at end of todays lecture
• Dwg 28 B21
• Sectioned Assembly
• Due at beginning of next lecture