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Engineering Graphics

EGR 166

Engineering Graphics

EGR 166

Course Description

Prerequisite: MATH LEVEL 4 and one year of high school mechanical drafting with final grade of C (2.0) or higher. Studies the engineering graphic language applied to mechanical design, review of multiview and isometric drafting, and the geometry of drawing. Develops skills in using orthographic projections, sectional views, auxiliary views and revolutions. Applies dimensioning to gears, bearings, fasteners, cams, etc. Uses computer-aided methods in drafting and analysis for all topics studied. Credit can be earning in EGR 166 or EGR 165 but not both. (30-60)

Outcomes and Objectives

Create, record, and communicate design ideas using American National Standards Institute (ANSI) practices.

Objectives:

  • Identify and demonstrate correct use of the drafting standards as they apply to sketches and drawings.
  • Create one view, multiview, and pictorial sketches.
  • Identify and correctly draw conventional line symbols to make sketches and drawings.
  • Neatly place hand-made standard letters and numbers on sketches and drawings.
  • Make free-hand well proportioned sketches of simple machine part shapes to include circle, arc, and polygon plane figures, and polyhedral solids.

Read and describe with standard dimensioning practices the size of objects by using decimal inch and metric scales to place and specify conventional numeric dimensions and notes.

Objectives:

  • Correctly demonstrate the ANSI concepts of contour dimensioning and geometric breakdown for giving size and location of various geometric shapes.
  • Identify the features and parts of dimension information.
  • Distinguish between size and location dimensions.
  • Create and read technical drawings at any specified scale.
  • Use ANSI standard practices to place text information to drawings.

Demonstrate and apply industry standards and best practices applied in engineering graphics.

Objectives:

  • Interpret, read, and draw any or all of the six standard orthographic views using conventional practices.
  • Correctly transfer height, width, and depth distances between views.
  • Display correct conventional representations of standard geometric features.
  • Identify and correctly display hidden, center, and visible lines in all views.
  • Draw and identify normal, inclined, and oblique lines and surfaces in all views.
  • Plan drawing views to fit properly within the sheet area at the intended scale.

Follow ANSI practices to make technical drawings with conventional sectional views.

Objectives:

  • Demonstrate understanding of cutting-plane theory by correctly placing the cutting-plane line within technical drawings.
  • List the names and identify the seven standard types of section views.
  • Demonstrate understanding of standard practices for conventional features.
  • Consistently draw correctly sectioned views when provided two orthographic views.
  • Demonstrate correct hidden line practices for sectioned views.
  • Correctly represent and place conventional break symbols, section-lining and view identification where necessary.

Make primary auxiliary views to correctly display inclined and oblique orthographic geometric features.

Objectives:

  • Explain and demonstrate the method for placing fold lines to project:
  • Define width, height, and depth auxiliary views.

Demonstrate and apply industry standards applied to mechanical components.

Objectives:

  • Demonstrate proper design and modeling of gears, bearings, fasteners, cams, fit tolerances, welds, housings, seals and/or additional mechanical components.
  • Demonstrate proper design and modeling of sub-assemblies and/or assemblies of mechanical components.
  • Demonstrate understanding of standard practices for conventional features.
  • Consistently draw correctly sectioned views when provided two orthographic views.
  • Demonstrate correct hidden line practices for sectioned views.
  • Correctly represent and place conventional break symbols, section-lining, and view identification where necessary.