DRF 124 - Blueprint Reading for Machine Tool Operators

1. Interpret dimensional tolerances.
   1. Explains the purpose of tolerance dimension
   2. Describes the techniques of displaying tolerance dimension
   3. Recognizes standard tolerance blocks
2. Interpret common surface finish notations.
   1. Interprets the following surface finish conditions: waviness, roughness height, lay, and roughness width cutoff
3. Recognize standard blueprint machining terms.
   1. Correctly interprets the following terms: fillet, runout, reaming, counterbore, countersink, spotface, chanfer
4. Interpret gear drawings.
   1. Explains the basic gear theory
   2. Explains the meaning of the common gear terms used on industrial prints
   3. Describes how to calculate additional gear data from handbook tables
5. Interpret the properties of ferrous, non-ferrous and plastics.
   1. Names the basic types of materials used in industry
   2. Describes the difference between iron and steels
   3. Lists the different types of steels
   4. Explains the importance of carbon content in steels
   5. Explains the steel classification numbering system
   6. Lists the common types of non-ferrous metals
   7. Lists the common types of plastics
6. Correctly interpret the symbols of geometric dimensioning.
   1. Explains why geometric dimensioning is needed
   2. Defines the common geometric dimensioning terms
   3. Lists the basic rules of geometric dimensioning
   4. Describes how feature control frames (symbols) are displayed on industrial prints
7. Interpret the basics of numerical control and interpret NC blueprints.
   1. Describes the ordinate and tabular dimensioning systems
   2. Discusses the difference between fixed zero and floating zero numerical control systems
   3. Describes the relationship between numerical control (NC) and computer numerical control (CNC)
8. Demonstrate competency in the basics of computer-aided drafting.
   1. Explains the advantages of using CAD in the drafting field
   2. Discusses the functions of CAD hardware
   3. Distinguishes the difference between a hand-drawn print and a CAD-developed print
9. The student will interpret metric dimensioned, and dual-dimensioned blueprints.
   1. Evaluates the linear measuring system
   2. Discusses reasons for using the metric measuring system
   3. Describes the dual dimensioning system used on industrial prints
   4. Explains product liability notations that may appear on prints