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  • 1. ME 123 Full Section Visualization and CAD Hard to visualize. Compare with right side in section for Section Views readability Left side view Front view Right side view in Full Section General Guidelines Lines in Sectioning• Use section lines to indicate “cut” material• Show all edges, not just “cut” material• No hidden lines except as needed for feature• Use object lines, not hidden lines, to outline “cut” material• Section lines same direction on each part• Cutting plane line in adjacent view• Section lines normally at 45o (a) (b) (c) (d) (e) CORRECT INCORRECT INCORRECT INCORRECT Hidden Lines in Section Views Direction of Section Lines CORRECT INCORRECT INCORRECT Normaly the section lines are at 45 degrees, (A) (B) but not if a feature of the part is at 45 degrees.
  • 2. Section Hatch Section Types Section lines at Same part, same varying angles for angle • Full different parts • Offset • Half • Removed • Revolved • Aligned • Broken-Out Three Parts Two Parts Full Section Offset Section Offset Top View Cutting Plane Edge View of Cutting Plane Section Line of Sight Removed Portion Lines Top View Offset Line Not Shown Animation Front View Front ViewReturn to Section Types Return to Section Types Half Section Removed Section B Cutting Plane A Section A-A A Remove One Quarter B Edge View of Cutting Plane Center Line (Hidden lines omitted unless used for dimensioningReturn to Section Types Return to Section Types
  • 3. Revolved Section Aligned Section Top View D Revolved 90o D Pictorial View Front View Broken Around Section in View SectionReturn to Section Types Return to Section Types Section D-D Broken-Out Section Webs in Section Cutting Plane (c) CORRECT A Break Line Broken-Out Portion B B Front View with Broken-Out Section (a) CORRECT (b) INCORRECT AReturn to Section Types Full Section Example Half Section Example
  • 4. Offset Section Example The holes go through

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