Engineering principals and Introduction to CAD.pdf

and introduction to computer Aid design for fresh student of engineering studying

1. MIT OpenCourseWare
http://ocw.mit.edu
2.007 Design and Manufacturing I
Spring 2009
For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms.

2. Introduction to CAD
- Basic parts 1 - 2.007 Spring 2009
Prof. David Gossard

3. On Splines (a tangent… ) Weights Thin strip

4. On Splines (a tangent…) P
x
y
x
M
x
y
l Flexure
Moment
Displacement
Cubic polynomial in x !

5. On Splines (a tangent… ) y
x
u
r(1)
r(0)
r’(0)
r’(1) Cubic splines
Refinements:
B-splines
Non-Uniform Rational B-splines (NURBS)
Curves and Surfaces !
“Control
Points”

6. Belts & Gears

7. Case Study – Fork Lift

8. Offset Entities, Link Value

9. Mirror Entities

10. Mirror Features

11. Case Study - Grippers

12. Linear & Circular Patterns

13. Revolved Feature

14. END