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Credit- Degree applicable
Effective Quarter: Fall 2020

I. Catalog Information


DMT 52
Geometric Dimensioning and Tolerancing: CAD Applications
2 Unit(s)
 

Advisory: EWRT 200 and READ 200, or ESL 261, 262 and 263.

Lec Hrs: 12.00
Lab Hrs: 36.00
Out of Class Hrs: 24.00
Total Student Learning Hrs: 72.00

This course will focus on geometric dimensioning and tolerancing, utilizing ASME Y14.5M-2009 standards as they apply to engineering and manufacturing drawings. CAD drawings will be completed from solid models using multiple datums, symbols, feature control frames, and other GD&T specifications.


Student Learning Outcome Statements (SLO)

 

Create a document package containing components modeled using CAD design tools in accordance with ASME standards and engineering drawings compliant with ASME Y14.5.


II. Course Objectives

A.Explain the dimensioning and tolerancing concepts and industry practices
B.Identify and interpret standard symbols.
C.Analyze the characteristics and standard practices of dimensioning using feature control frames.
D.Demonstrate tolerancing and specifications.
E.Apply datums to engineering design.
F.Illustrate and identify mating parts requirements and specifications.
G.Analyze and input geometric non-position features.

III. Essential Student Materials

 None

IV. Essential College Facilities

 CAD computer laboratory

V. Expanded Description: Content and Form

A.Explain the dimensioning and tolerancing concepts and industry practices
1.History.
2.Coordinate systems.
3.Y14.5M standards.
4.ISO standards.
B.Identify and interpret standard symbols.
1.Feature control frames.
2.Size.
3.Coordinate.
4.Geometric Y14.5 and ISO symbols.
C.Analyze the characteristics and standard practices of dimensioning using feature control frames.
1.Size.
2.Position.
3.Datums.
4.Features.
D.Demonstrate tolerancing and specifications.
1.Size.
2.Position.
3.Non-position features.
4.Maximum material condition.
5.Regardless of feature size.
6.Least material condition.
7.Use an application of symbols.
E.Apply datums to engineering design.
1.Use.
2.Primary.
3.Secondary.
4.Tertiary.
F.Illustrate and identify mating parts requirements and specifications.
1.Control of features.
2.Limits.
3.Tolerances.
G.Analyze and input geometric non-position features.
1.Flatness.
2.Straightness.
3.Circularity.
4.Cylindricity.
5.Perpendicularity.
6.Angularity.
7.Parallelism.
8.Profile.
9.Run out.

VI. Assignments

A.Reading from GD&T textbook and references.
B.Workbook assignments from GD&T text.
C.Laboratory assignments requiring students to show understanding of GD&T using CAD models and engineering drawings.

VII. Methods of Instruction

 Lecture and visual aids
Discussion of assigned reading
Discussion and problem solving performed in class
Quiz and examination review performed in class
Homework and extended projects
Laboratory discussion sessions and quizzes that evaluate the proceedings weekly laboratory exercises

VIII. Methods of Evaluating Objectives

A.Quizzes to evaluate correctness and proper use of GD&T symbols and concepts as well as application of industry standards.
B.Completion and correctness of text book worksheets demonstrating understanding of GD&T and ISO standards.
C.Midterm and final exam, including modeling and drawing components, that require students to apply concepts examined through the course as stated in the evaluation rubric.

IX. Texts and Supporting References

A.Examples of Primary Texts and References
1.Madsen, David. "Geometric Dimensioning and Tolerancing." Ninth Edition Tinley Park Ill: Goodheart Willcox, 2013.
B.Examples of Supporting Texts and References
1.None

X. Lab Topics

A.Applying Datums
B.Dimensioning
C.Position Tolerancing
D.Features
E.Use of Symbols