Maricopa Community Colleges  DFT113   19956-99999 
Official Course Description: MCCCD Approval: 12/13/94
DFT113 19956-99999 L+L 3 Credit(s) 6 Period(s)
Technical Drafting IV
Advanced uses of Computer-Aided Drafting (two-dimensional and three dimensional) as a tool for producing working drawings and assembly drawings in weldment design and jig and fixture design. Prerequisites: DFT112 or equivalent.
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MCCCD Official Course Competencies:
 
DFT113   19956-99999 Technical Drafting IV
1. Prepare weldment drawings according to advanced specifications, with emphasis on finished surfaces and weld fabrication procedures. (I)
2. Selection and use of weld symbols emphasizing cost, production procedures and customer specification. (II)
3. Apply dimensioning practices used in weldment drawings, emphasizing welding fabrication and procedures, including welding fixtures for mass production. (III)
4. Calculate weight of weldment assemblies for purposes of cost and shipping. (IV)
5. Design and prepare a tool fixture drawing according to advanced specifications for the performance of one or more machining operations. (V)
6. Select and apply locators and positioners as they relate to finished and unfinished surfaces in fixture design. (VI)
7. Select and apply clamping devices used in fixture design. (VII)
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MCCCD Official Course Outline:
 
DFT113   19956-99999 Technical Drafting IV
    I. Welding Design
        A. Casting conversions
        B. Specification
        C. Finished surfaces
      II. Weld Symbols
          A. Types of weld
          B. Scarfs
          C. Machining and grinding
        III. Weldment Dimensioning
            A. Primary part
            B. Secondary part
            C. Relationship of primary and secondary parts
          IV. Weight Calculations
            V. Tool Fixture Design
                A. Locating surface
                B. Positioning
                C. Machining operation to be performed
                D. Repeatability
                E. Simplicity
              VI. Locators and Positioners
                  A. Positive positioning
                    1. Finished surfaces
                    2. Unfinished surfaces
                VII. Clamping Devices: Positive Lock
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