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Apr 27, 2024
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PPT 122 - Geometric Dimensioning/Tolerancing/Precision Fit
5.0 Credits
This course introduces apprentice plastic process technicians to principles of geometric dimensioning and tolerancing (GD&T) governed by the ASME Y14.5 standard. Apprentices will learn to identify and interpret each of the GD&T controls for form, profile, orientation, location, and runout. Apprentices will learn to interpret symbols, datums, basic dimensions, material condition modifiers, and other GD&T concepts that are essential for the plastic process technician. Hands-on activities will emphasize interpreting GD&T found on engineering drawings, as well as the setup, measuring, and inspection of a part or features with geometric tolerancing. Note: This class is part of an AJAC apprenticeship program.
Prerequisite PPT 102.
Course-level Learning Objectives (CLOs)
Upon successful completion of this course, students will be able to:
- Define and explain the purpose of geometric tolerancing.
- Interpret geometric tolerances and symbols on drawings, including form, orientation, location, profile, and runout tolerances.
- Describe and interpret the ASME Y14.5 — 2009 standard used for dimensioning and tolerancing.
- Demonstrate use of reference guides, standards books, and other resources to research information about geometric dimensioning and tolerancing.
- Interpret standard limits and fits between mating parts.
- Interpret datum feature and datum target symbols.
- Interpret material condition, material boundary, and other modifying symbols.
- Interpret surface geometric controls and axis geometric controls.
- Determine geometric tolerances for produced sizes at RFS, MMC, and LMC, as well as bonus tolerancing.
- Apply geometric dimensioning and tolerancing information to determine proper setup, manufacturing methods, and inspection of a part.
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