1. MT 293 Parametric
Computer Aided Design

2. Save the Date
Mondays & Wednesdays
2:10 pm – 5:00 pm
S-317

3. Sammy Kupfer Contact Details
Office Hours: Monday after class or by appointment

4. Course Description
An introduction to mechanical design drafting with the use of a parametric, computer aided design and drafting software to allow for increased productivity. The course covers concepts, commands and parameters involved in CAD systems. Students generate working drawings by interacting with the computer using graphics display terminals, parametric software, mouse and plotter.

5. General Ed Objectives
Meet requirements for successful transfer into the junior year of baccalaureate program (transfer program)
Demonstrate mastery of discipline-specific knowledge, skills and tools required for entry into or advancement in the job market of their field
Use analytical reasoning skills and apply logic to solve problems
Use quantitative skills and mathematical reasoning to solve problems
Recognize historical processes in the formation of ideas, cultural movements, political institutions, economic trends and social structures

6. Course Goals Developing Engineering Skills Read engineering drawings
Sketch ideas (by hand)
Draw and/or model using CAD
Generate prints that others can use

7. Computer Knowledge SolidWorks only runs on Windows
You should be comfortable with windows
Basic understanding of file systems, directories, etc.
“Both files must be in the same directory”

8. SolidWorks Version SolidWorks version error
If I can’t open your part, no credit for the assignment.

9. Co-req
MT 111

10. Labs and Recitation
Help practice the material taught in lecture

11. Required Materials By Valentino & DiZinno Textbook:
Solidworks for Technology & Engineering, 2nd edition
By Valentino & DiZinno
Industrial Press, ISBN
USB flash drive ~2GB

12. Grading Scheme
Lab Grade 20%
Quizzes 60%
Final 20%

13. Attendance
Engineering is
NOT
a spectator sport!

14. Academic Misconduct Policy
You must be the
SOLE AUTHOR
of any work submitted

15. Your First Assignment Send an email to me at skupfer00@ccny.cuny.edu
with your name and telling me what kind of CAD experience that you have (if any).

16. How Do I Build This Part?

17. How About This One? 17

18. Technical Drawing A form of graphic communication.
Used in the transforming of an idea into physical form.
A technical drawing differs from a common drawing by how it is interpreted.

21. Types of 3D models Wireframe Models Surface Models Solid models
Collection of geometric elements
Surface Models
Shows the surface of an object
Surface has zero thickness
Solid models
Part is a set of featues

22. Wireframe Simple Only Boundaries
Only flat planes connect each boundary

23. Surface Better representation of part Only surfaces – part is hollow
Does not have history of how part is designed

24. Solid Model Much better representation of part
Every feature is related
Interior is completely filled – requires more memory
Has a history of how part is designed

25. Parametric Design Dimension driven modeling
Change the dimension of one part, the rest of the model adjusts
The change follows through to all uses of the part
Bi-directional associativity

26. Parametric Design

29. Constraints How well the parts/features are defined Too few constrains
Parts won’t move proportionally
Too many constraints
Part will be over-defined
SolidWorks will throw an error