4-sectional-views - ME250 Design and Manufacturing I...

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ME250 Design and Manufacturing I Sectional Views
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Outline What? Why? Rules Full Section Half Section Offset section Aligned Section Other Sections Summary 2
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What? An ugly rock? 3
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What? A pretty rock? 4
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What? A view that looks inside an object by taking an imaginary cut 5
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What? Sectional view label cut material cutting plane 6
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Why? Visualizing complex internal features is difficult with external views and hidden lines 7
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Rules Cutting Plane ine Section ines Line Lines Arrows point to e portion being 8 the portion being kept.
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Rules Common Section Line Symbols 9
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Rules Common Section Line Symbols More in course pack 10
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Rules Rule 1: Sectioned area should be bounded by a visible outline 11
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Rules Rule 2: Section lines should be parallel 12
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Rules Rule 3: Visible edges behind the cutting plane should be shown 13
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Rules Rule 4: Hidden features should be omitted, except r threads and broken out for threads and broken out sections 14
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Full Section Cutting plane passes fully through the object 15
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Full Section Used in many cases to avoid having to dimension hidden lines 16
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Exercise Sketch the front view as a full section. Material is steel
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4-sectional-views - ME250 Design and Manufacturing I...

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