Explores the making of working drawings using proper dimensioning techniques. Showing necessary views, placement of dimensions, use of different dimensioning styles, and calculation of tolerances are the basis of instruction. The function and relationship of mating parts in an assembly are considered when dimensioning to insure proper fit and function. Threads, fasteners, and common manufacturing operations are applied and dimensioned. Standard and commercial parts are selected from catalogs. Setup and application of CAD dimensioning styles and tolerances are utilized.
Goals, Topics, and Objectives
- Prepare a drawing to be dimensioned.
- Placement and spacing of dimensions on a drawing.
- Dimensioning methods.
- Part geometry, process, and function.
- Use of datums.
- Tolerancing/fit of parts.
- Threads, fasteners, and locators.
- Set up of dimensioning standards in CAD.
- Dimensioning and tolerancing in CAD.
- Geometric Dimensioning, and Tolerancing (GD&T).
- Detail Drawings.
-Draw an object correctly in orthographic projection to show all necessary views.
Properly place dimensions on a drawing according to its geometry and the views drawn.
-Establish and use a datum for dimensioning.
-Use a datum for conventional, chart, and o-line dimensioning.
-Calculate and apply tolerance dimensions to a part.
-Draw and dimension a thread.
-Draw and dimension common machining operations.
-Set-up dimensioning parameters in a CAD drawing.
-Properly dimension a CAD drawing.
-Apply tolerance dimensions to a CAD drawing.
-Demonstrate basic knowledge of geometric dimensioning & tolerancing terms.
-Demonstrate an ability to recognize individual parts of an assembly.
-Create surfaces of a part in relation to others parts in an assembly.
Assessment and Requirements
All students will be required to complete a set of competencies measured through drawings, tests, written assignments, and achieving a cumulative average of 60% or above.