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Dec 26, 2024
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2023-2024 College Catalog [ARCHIVED CATALOG]
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CAD 172 - Geometric Dimensioning and Tolerancing 3 Credits, 3 Contact Hours 3 lecture periods 0 lab periods
Establishing controls on sizes and allowances of mechanical parts. Includes definitions and rules, form tolerances, datums, orientation controls, location controls, runout, and profile.
Prerequisite(s): CAD 117 or CAD 142 . Information: Prerequisites may be waived if equivalent mechanical drawing experience is documented. See CAD instructor or advisor/counselor.
Course Learning Outcomes
- Discuss the importance of geometric dimensioning and tolerancing.
- State definition and rules of geometric dimensioning and tolerancing with symbol identification.
- Define form tolerances and their uses.
- Define datums and their use.
- Define orientation controls and their uses.
- Define location controls and their uses.
- Identify circular and total runout requiring one or two datums.
- Define profile and its uses.
Outline:
- Introduction to Geometric Dimensioning and Tolerancing
- Engineering drawings and part cost impact
- Correct part tolerance
- ASME 14.5
- ISO compatible
- Definitions and Rules
- Terms
- Features versus features-of-size
- Peculiar sizes
- Material condition
- Feature control frames
- Basic dimensions
- Datum identifiers
- Three major rules
- Virtual size, virtual condition
- Form Tolerances
- Shared attributes
- Flatness
- Straightness
- Maximum material condition
- Virtual condition
- Circularity
- Cylindricity
- Datums
- Datum planes
- Surfaces
- Feature-of-size
- Material condition modifiers
- Virtual condition
- Orientation Controls
- Control features and features-of-size
- Perpendicularity
- Parallelism
- Angularity
- Location Control
- Position
- Axis and boundary control equivalency
- Application rules
- Fixed and floating fasteners
- Maximum material condition and bonus tolerance
- Receiver gages
- Regardless of feature size
- Least material condition and application
- Paper gages
- Concentricity
- Runout
- Circular runout
- Total runout
- Profile
- Profile of a line
- Profile of a surface
Effective Term: Fall 2016
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