Introduction to CAD

From Wikiversity

Course Title: Graphics-

Lecture Topic: Introduction to CAD

Instructor: Dr. Crown

Institution: University of Texas - Pan American

[edit] Backwards Design

Course Objectives

• Primary Objectives- By the next class period students will be able to:
  • Design parts using a simple CAD tool
  • Create simple multiview and pictorial drawings
  • Document designs with engineering drawings
  • Explain the usefulness of drawing and CAD in the design process

• Sub Objectives- The objectives will require that students be able to:
  • Understand a 3-D cartesian coordinate system
  • Visualize simple 3-D objects
  • Utilize basic computer tools and skills

• Difficulties
  • Students have difficulty visualizing 3-D parts and often get frustrated and give up on this necessary skill. The ability to interpret complex multi-view drawings is a learned skill that requires many hours of practice and can be tedious. Students often come into the course with a wide range of visualization and drawing skills. The course is an entry level course and many students have not learned how to be disciplined and focused in the studies.

• Real-World Contexts
  • Computer aided design is used in almost every area of career interest of the students and is related in some way to leisure activities. It is actually difficult to think of an area of student interest where CAD does not play some role. CAD is also a principle tool used in video games, a popular activity for students.

Model of Knowledge

• Concept Map
  • Engineering Design Process
    • Ideation Phase
      • CAD used to develop and visualize ideas
      • CAD used to understand the design environment
      • CAD used to analyze designs
    • Implemenation Phase
      • CAD used for manufacturing drawings
      • CAD used for assembbly drawings
      • CAD used for communication
  • Computer Aided Design
    • Symbiotic with sketching
      • Multi-view drawings
      • Isometric and oblique pictorials
    • A visualization tool
      • Coordinate systems
      • Right hand rule
    • Useful in design development and documentation
    • Can be used with CNC machines
    • Expected skill for engineers
    • Many different CAD programs

• Content Priorities
  • Enduring Understanding
    • Understand connections between sketching, drawing, and CAD
    • Make and interpret simple multi-view and pictorial drawings
  • Important to Do and Know
    • Make simple parts with a CAD programs
    • Develop visualization skills
    • Develop a systematic approach to design
  • Worth Being Familiar with
    • Familiarity with VRML models
    • Develop and encourage creativity

Assessment of Learning

• Formative Assessment
  • In Class (groups)
    • Worksheet: Identifying surfaces
    • Game: Identifying pictorials
    • Worksheet: Cube puzzle design-new
    • Worksheet: Cube puzzle drawings-example
    • Create a VRML model-Part 1
  • Homework (individual)
    • Worksheet: Creating multiview drawings
    • Worksheet: Creating pictorial drawings
    • Game: Identifying pictorials
• Summative Assessment
  • Worksheet: Multiview and pictorial drawings
  • Completed cube puzzle model and worksheets

[edit] Legacy Cycle

OBJECTIVE

By the next class period, students will be able to:

• Design parts using a simple CAD tool
• Create simple multiview and pictorial drawings
• Document designs with engineering drawings
• Explain the usefulness of drawings and CAD in the design process

The objectives will require that students be able to:

• Understand a 3-D cartesian coordinate system
• Visualize simple 3-D objects
• Utilize basic computer tools and skills

THE CHALLENGE

How do you design and create a challenging and entertaining cube puzzle?

MULTIPLE PERSPECTIVES

RESEARCH & REVISE

TEST YOUR METTLE

GO PUBLIC

[edit] See also

• Computer-aided design