engr 111c_09_2_08c_otey

engr 111c_09_2_08c_otey - ENGR 111 Fall 2008 CLASS 9.2...

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CLASS 9.2 OCTOBER 23, 2007 Sections ENGR 111 Fall 2008
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Learning Objectives List and recognize the hatching symbols for Cast Iron, Steel,  Aluminum, Copper, and Zinc Identify a drawing as being a:  full section, half section, offset  section, broken-out section, revolved section, or removed  section Generate the above mentioned sectional views given  complete orthographic views of an object Use revolutions and partial views as conventional practices to  construct sectional views of an object  List the parts of a drawing which do not get crosshatched,  even if the cutting plane passes through them Sketch a cutting plane for any of the sections listed above
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Purpose of Sections Depict assembly of  parts  Show internal detail Replace complex  orthographic views Describe materials in  an assembly
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3 Stage Gear Box
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Sectional view of a Gear Box
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ANSI Material Patterns  ANSI31 -- Cast Iron, General ANSI32 -- Steel ANSI33  -- Brass, Bronze,    Copper ANSI38  -- Magnesium,       Aluminum Earth
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Sectioning Practices Different parts at different angles Hatch spacing of about 1/16”-1/8”  Cutting plane line -- 0.60 mm Section or hatch lines -- 0.20 mm  Visible lines -- 0.50 mm  Not parallel or perpendicular to  boundary
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engr 111c_09_2_08c_otey - ENGR 111 Fall 2008 CLASS 9.2...

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