DRAF 1200 - Design for Precision (Measurement)

9.0 Credits

This course presents dimensioning techniques that apply to manufactured products. It introduces geometric dimensioning and tolerancing used in the selection and application of dimensions. Students use the micrometer, caliper, and other precise measuring instruments to measure actual manufactured products. They examine fits and allowances and current ANSI standards. Students complete lab assignments using CAD software.

Prerequisites: (1) DRAF 1100

Lecture Hours: 9.0
Lab Hours: 0.0
Internship Hours: 0.0
Clinical or Practicum Hours: 0.0

Course Objectives

Apply basic dimensions on working drawings using extension lines, dimension lines, leaders, arrowheads, figures, notes and symbols.
Understand the purpose and function of limits and tolerances.
Demonstrate the ability to specify and calculate fit and allowance of mating parts.
Correctly identify and apply the basic surface texture symbols.
Define and relate terms associated with dimensioning and tolerancing.
Use three basic geometric tolerances of form, orientation and location.
Define and use datums and datum reference frames.
Apply geometric tolerances that are affected by features of size.
Describe two methods of tolerancing for the location of holes: coordinate tolerancing and positional tolerancing.
Identify precision instruments necessary to measure products randomly selected from the manufacturing industry.
Demonstrate the ability to precisely measure and then draw and dimension parts and assemblies.
List hole and shaft fits for an assembly selected by the instructor.
Explain tolerance as it applies to accurate dimensioning of manufactured components.

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