CNC 104 - Blueprint Reading for CNC Operators

• Identify common terminology used on blueprints.
• Identify common abbreviations used on blueprints.
• Identify common line styles used on blueprints.
• Identify the different sizes of blueprints.
• List the components found on a title block.
• Explain the notes on the title block and what they pertain to.
• Identify the radii and diameters as depicted on a blueprint.
• Calculate the size of stock the part will be made from.
• Explain the tolerance block.
• Identify the top, front, and right sides in orthographic projections.
• Distinguish the difference between 3rd angle and 1st angle projections.
• Identify where the corresponding surfaces are located on an orthographic projection, when looknig at an isometric drawing.
• Sketch an isometric view of an orthographic projection drawing.
• Identify angle on an orthographic projection blueprint.
• Calculate complementary and supplementary angles when given an orthographic projection of a part having angles.
• Identify included angles.
• Identify four types of dimensioning used in the United States.
• Identify the required depth of a drilled hole.
• Identify the required depth of a chamfer.
• Calculate key seat height.
• Calculate the position of holes on the Cartesian coordinate system.
• Identify how surface finishes are called out on a print.
• Identify what machining operations will have the capability to produce the prescribed surface finish.
• Measure a part and determine whether it is in tolerance.
• Identify a thread call out on a blueprint.

1. Terms and abbreviations
2. Dimensioning systems and tolerances
3. Title blocks and drawing notes
4. Lyne types and usages
5. View types
6. Surface finishes
7. Machined features
8. Seciton and detailed views