MFG 121 - Machine Trade Printreading I

1. Explain what a blueprint is and how it is used
2. Define commonly used line types
3. Demonstrate knowledge of the combination of views used to describe an object
   1. Recognize the combination of views
   2. Explain what governs the number of views needed
   3. Explain the value of sketching a part
   4. Sketch horizontal, vertical, slant lines by freehand
   5. Sketch a circle
   6. Sketch top, front, and right side views using third-angle projection
   7. Associate pictorial and orthographic drawings and how they are used
4. Draw an auxiliary view
   1. Identify an auxiliary view
   2. Distinguish between primary and a secondary auxiliary view
   3. Describe how and when auxiliary views are used
5. Illustrate the standards for dimension
   1. Describe two purposes construction dimensions serve
   2. Identify the dimensions which indicate the exact size and location of details on a print
   3. Show the similarities and differences between the aligning method and the unidirectional method of dimensioning
   4. Identify common symbols used on blue prints
   5. Describe how to dimension cylinders, circles, and arcs
   6. Demonstrate how to dimension different types of holes, angles, points, centers and large arcs
   7. Dimension holes by using leaders
   8. Delineate the two common methods of dimensioning angles
   9. Describe linear and angular measurement
   10. Explain the differences between dimensioning methods such as baseline or chain dimensioning.
6. Distinguish between unilateral and bilateral tolerances
   1. Describe unilateral and bilateral tolerances
   2. Demonstrate knowledge of fractional and angular tolerances and dimensions
   3. Describe the limits of accuracy on a drawing
   4. Explain why the decimal system of dimensioning is widely used in the industry
7. Explain what ISO stands for
   1. Describe the ISO Symbols
   2. Explain First-Angle Projection
   3. Make a drawing using Dual Dimension System
8. Describe section views
   1. Describe cutting planes, cross hatching, and section lining
   2. Give an explanation of what an exterior view shows
   3. Describe how to obtain a sectional view
   4. Narrate what a half section view shows
   5. Identify full, half, broken or partial sections and their uses
   6. Describe what a conventional break is
   7. Identify what is included in an assembly drawing
9. Explain what Geometric dimension and tolerances are, and how they are used
   1. Explain what a datum refers to
   2. Describe coordinate dimensioning
   3. Explain the coordinate charts and their uses
   4. Distinguish among the 5 basic types of tolerances
   5. Identify the datum features of cylindrical part(s).
   6. Explain what a reference frame and a feature control frame are
   7. Identify what a datum target symbol refers to