TECHNICAL DESIGN II (546)

Transcription

1 DESCRIPTION The second in a sequence of courses that prepares individuals with an emphasis in developing technical knowledge and skills to develop working drawings in support of mechanical and industrial engineers, and related professionals. This includes instruction in the use of 3D Computer-Aided Design (CAD) software, manufacturing materials and processes, sectioning, mechanical drafting, basic welding, geometric dimensioning and tolerancing, blueprint reading, and technical communication. Total Test Questions: 43 Levels: Grades Units of Credit:.50 Prerequisites: Technical Design I STANDARDS, OBJECTIVES, AND INDICATORS STANDARD 1 5% of Exam Blueprint STUDENTS WILL BE ABLE TO DEVELOP A TECHNICAL DRAWING USING STANDARD SECTIONAL VIEWS SUCH AS FULL, HALF, OFFSET, BROKEN-OUT, REMOVED, AND REVOLVED. Objective 3: Objective 8: Objective 9: The drawing accurately demonstrates previous competency standards. Section drawings are completed according to ANSI standards. Section lines are drawn at a 45 degree angle unless a more appropriate angle is justified. Section lines are dark and very thin. Cutting plane lines are drawn according to the alphabet of lines. Break lines are drawn according to the alphabet of lines. Section lines are spaced uniformly. Visible edges and contours behind the cutting plane are correctly shown. Hidden lines are omitted. related academic: (m6, m8.9) STANDARD 2 23% of Exam Blueprint STUDENTS WILL DEMONSTRATE THE USE OF AUXILIARY VIEWS. Objective 3: Create a primary auxiliary view from any orthographic projection. Draw folding lines or reference plane lines between any two adjacent views. Construct depth, height, or width auxiliary views. Plot circles and arcs are drawn to conform to the intersection of projection lines and transferred lines. Create auxiliary sectional views. Find the true length of an oblique line by constructing an auxiliary view. Find the true size of an oblique plane by constructing auxiliary views Page 1 of 6

2 STANDARD 3 17% of Exam Blueprint STUDENTS WILL DEMONSTRATE THE USE OF INTERSECTIONS AND DEVELOPMENTS. Parallel lines. Radial. 1. Flat surface pattern development (boxes). 2. Flat surfaced pattern pipe. 3. Pipe patterns with an angle of turn (end cuts). 4. Flat surface pattern prism. 5. Intersections of prisms. 6. Intersections of pipes. 1. True length. 2. Right pyramid development. 3. Conical surface development (cone). 4. Truncated cone development. STANDARD 4 5% of Exam Blueprint STUDENTS WILL UNDERSTAND AND DEMONSTRATE THE USE OF FASTENERS. Objective 3: Objective 8: Objective 9: Objective 10: Define thread terminology. Develop different thread forms. Calculate thread pitch. Write different thread notes. Draw the simplified, schematic, internal and external type threads. Work with American National, Unified, and metric threads. Identify thread difference between national pipe threads and American National Thread Series. Specify different types of cap and machine screw heads, fasteners standard lengths. Identify standard bolt sizes, lengths, different types of heads, and finishes. Correctly draw, locate, and label fasteners on production, assembly drawings, and parts lists. STANDARD 5 5% of Exam Blueprint STUDENTS WILL UNDERSTAND AND DEMONSTRATE THE BASICS OF GEOMETRIC DIMENSIONING AND TOLERANCING (GD&T). Objective 3: Basic tolerancing terminology. GD&T terms and symbols. Create limit dimensions. Describe the nominal size, tolerance, limits, and allowances of two mating parts Page 2 of 6

3 Objective 8: Objective 9: Objective 10: Objective 11: Objective 12: Identify a clearance fit, interference fit, and transition fits. Describe the basic hole and basic shaft systems. Dimension two mating parts using limit dimension, unilateral tolerances, and bilateral tolerances. Specify the classes of fits as required on exercises and drawings. Draw geometric tolerancing symbols. Specify position and geometric tolerances. Draw and place feature control symbols and datum references on a drawing. 1. Specify form tolerances, e.g., straightness, flatness, roundness (circularity), cylindricity, profile, angularity, parallelism, perpendicularity, and concentricity. 2. Specify positional tolerances in reference to maximum material condition (MMC), regardless of feature size (RFS), and least material condition (LMC). Specify and apply the tolerance symbols, tolerances, and datums on various drawings. STANDARD 6 17% of Exam Blueprint STUDENTS WILL UNDERSTAND AND IDENTIFY BASIC WELDING SYMBOLS. Understand, identify, and draw basic weld symbols. Understand and create detail drawings for welded part. Objective 3: Understand and specify weld types on drawings. Understand and specify weld size on a drawing. Understand and specify finish and contour of welds. Understand and indicate field welds on a drawing. Understand and indicate welding process on a drawing. Objective 8: Understand basic welding processes. STANDARD 7 6% of Exam Blueprint STUDENTS WILL UNDERSTAND AND DEMONSTRATE APPLIED MATHEMATICS. Perform basic arithmetic functions. 1. Add, subtract, multiply, and divide whole numbers. 2. Add, subtract, multiply, and divide fractions. 3. Add, subtract, multiply, and divide decimals. Convert fractions/decimals. 1. Convert fractions to decimal equivalents. 2. Convert decimal values to nearest fractional equivalent. 3. Use decimal equivalent chart for conversions. Objective 3: Convert metric/inch measurements. 1. Convert inch dimensions to metric. 2. Convert metric dimensions to inch. 3. Use metric/inch conversion chart Page 3 of 6

4 Perform basic trigonometric functions 1. Solve for unknown angles. 2. Solve for unknown sides. 3. Calculate bolt-hole patterns. STANDARD 8 20% of Exam Blueprint STUDENTS WILL UNDERSTAND AND ASSEMBLE WORKING DRAWINGS. Develop a set of working drawings of six or more parts, of industry assembled parts. 1. Draw all necessary views of each part. 2. Draw only one part per sheet. 3. Dimension parts as per ANSI Y 14.5 standards. 4. Apply appropriate tolerances. 5. Apply necessary notes, material specifications, symbols, and other data. 6. Complete a parts list of the parts, which includes parts number, manufacturer s name, manufacturer s stock number, material specs, quantity of each part, and notes for assembly. 7. Complete an assembly drawing showing the relationship of the parts to each other. 8. Include title block and border on each production drawing sheet. STANDARD 9 2% of Exam Blueprint STUDENTS WILL UNDERSTAND AND IDENTIFY MANUFACTURING PROCESSES. List the traditional manufacturing processes. 1. Casting 2. Forging 3. Extruding 4. Stamping 5. Machining Identify the automated manufacturing processes. 1. CAM 2. CIM/FMS 3. CNC 4. Robotics 5. Just-in-time (JIT) Objective 3: Describe the casting and foundry process. Identify operations that can be performed with an engine lathe, drill press, mill, shaper, grinder, and punch press. Identify various types of machined holes. 1. Drilling 2. Spot surfacing 3. Counterboring 4. Countersinking 5. Counterdrilling 6. Boring 7. Reaming Page 4 of 6

5 8. Knurling 9. Chamfers 10. Tapers Identify common material stock forms. 1. Metals Carbon steel Alloy steel Stainless steel Cast steel Cast iron Aluminum 2. Non-metals Plastics Composites Ceramics Elastomers List the common plastic processing and forming techniques. 1. Injection molding 2. Blow molding 3. Extrusion 4. Thermoforming STANDARD 10 STUDENTS WILL ENHANCE THEIR UNDERSTANDING OF DESIGN TECHNOLOGY AS A PROFESSION AND WILL DEVELOP PROFESSIONAL SKILLS FOR THE WORKPLACE. As a participating member of the SkillsUSA student organization, complete the SkillsUSA Level 2 Professional Development Program. 1. Measure/modify short-term goals. 2. Identify stress sources. 3. Select characteristics of a positive image. 4. Demonstrate government awareness. 5. Demonstrate awareness of professional organizations. 6. Apply team skills to a group project. 7. Observe and critique team skills at a local professional meeting. 8. Demonstrate business meeting skills. 9. Explore workplace ethics: code of conduct. 10. Demonstrate social etiquette. 11. Complete survey for employment opportunities. 12. Review a professional journal and develop a three-to-five-minute speech. 13. Complete a job application. 14. Assemble an employment portfolio 15. Explore supervisory and management roles in an organization. 16. Conduct a worker interview 17. Perform a self-evaluation of proficiency in program competencies. Serve in the school s SkillsUSA chapter as a committee member. Objective 3: Display a professional attitude toward the instructor and peers Page 5 of 6

6 As a participating member of the SkillsUSA student organization, complete the SkillsUSA Level 3 Professional Development program. 1. Evaluate your career and training goals. 2. Market your career choice. 3. Develop personal financial skills. 4. Serve as a volunteer in the community. 5. Plan and develop a business. 6. Conduct a worker interview. 7. Develop a résumé and write a cover letter. 8. Demonstrate interviewing skills. 9. Understand the cost of customer service. 10. Identify and apply conflict resolution skills. 11. Demonstrate evaluation skills. 12. Examine workplace ethics: the role of values in making decisions. 13. Perform a skill demonstration. 14. Learn what is contained in Material Safety Data Sheets (MSDS). 15. Perform a self-evaluation of proficiency in program competencies. Serve as an officer in the school s chapter of SkillsUSA. Participate in an authorized SkillsUSA drafting competition. Display a professional attitude toward the instructor and peers Page 6 of 6

7 PERFORMANCE STANDARD EVALUATION CHECKLIST Student Name Instructor s Name School District Performance Rating Scale: Limited Skills..... Moderate Skills..High Skills Performance assessments may be completed and evaluated at any time during the course. The following performance skills are to be used in connection with the associated written exam. To pass the performance standard the student must attain a performance standard average of 8 or higher on the rating scale. Students may be encouraged to repeat the objectives until they average 8 or higher for the following elements: PERFORMANCE SKILLS STANDARDS STANDARD 1 Develop a technical drawing using standard sectional views: Example: Full, half, broken-out, removed, and revolved. STANDARD 2 Demonstrate the use of auxiliary views. STANDARD 3 Demonstrate the use of intersections and developments P a g e 1

8 PERFORMANCE SKILLS STANDARDS STANDARD 4 Understand and demonstrate the use of fasteners. STANDARD 5 Understand and demonstrate the basics of Geometric Dimensioning and Tolerancing (GD&T). STANDARD 6 Understand and identify basic welding symbols. STANDARD 7 Understand and demonstrate applied mathematics. STANDARD 8 Understand and assemble working drawings. STANDARD 9 Understand and identify manufacturing processes. STANDARD 10 Understand Design Technology as a profession and develop professional skills for the workplace. PERFORMANCE STANDARD AVERAGE Average: P a g e 2