1. Introduction to CAD/CAM/CAE
CAD Lab.

2. Introduction CAD(Computer Aided Design)
CAM(Computer Aided Manufacturing)
CAE(Computer Aided Engineering)
Memory capacity, processing speed,
Interactive graphics
Quality, Cost, Delivery

3. Product cycle

4. Solid model of example part

5. Finite element analysis model of example part
Finite element meshes
Load condition: case 1
Load condition: case 2

6. Stress distribution on example part
Result for case1
Result for case2

7. Fill time distribution for example part

8. Physical prototype of example part

9. Part drawing of example part

10. Core, cavity, and side cores for example part

11. Completely designed mold base

12. NC tool paths to machine mold

13. Product cycle에서 컴퓨터의 적용
신속한 Design concept의 제공
Computer aided drafting system
Geometric modeling system
Parametric modeling

14. Product cycle에서 컴퓨터의 적용 – cont’

15. Product cycle에서 컴퓨터의 적용 – cont’
강력한 해석기능의 제공
Stress analysis, interference checking
Kinematic analysis, etc.
Analysis model with proper abstraction
Interactive generation of analysis model

16. Product cycle에서 컴퓨터의 적용 – cont’
Design evaluation을 위한 prototype 제공
Rapid Prototyping (RP)
Virtual Prototyping (VP)

17. RP - Stereolithography Process
Cured Plastic
XY Scanning Ultraviolet Laser Beam
Photo-curable
Resin(Liquid)
Top of the Liquid
Elevator
Vat
Platform

18. Virtual Prototyping of Engine

19. Virtual Prototype of Equipment
Construction Equipment from John Deere (Division Inc.)

20. Product cycle에서 컴퓨터의 적용 – cont’
편리한 design documentation 기능 제공
Computer aided drafting system
Automatic drafting program

21. Product cycle에서 컴퓨터의 적용 – cont’

22. Product cycle에서 컴퓨터의 적용 – cont’
Process plan의 자동 생성
NC program의 자동 생성
Robot, CMM 구동 프로그램의 자동 생성

23. Definitions of CAD, CAM and CAE
Creation, modification, analysis, optimization
Computer graphics + design을 위한 application program
Tolerance analysis, mass property calculation
Finite element modeling and analysis

24. Definitions of CAD, CAM and CAE – cont’
CAD – cont’
Design geometry를 정의하는 것이 기본기능
Design geometry가 product development cycle의 핵심
Computer aided drafting system, geometric modeling system이 CAD system의 핵심

25. Definitions of CAD, CAM and CAE – cont’
Plan, manage, control of manufacturing operations
NC가 가장 활용도가 큼
Robot programming for material handling, welding, assembling, etc.

26. Definitions of CAD, CAM and CAE – cont’
CAM – cont’
Process planning의 자동화
Group technology
Feature recognition or feature based modeling
MRP(Material Requirement Planning)

27. Definitions of CAD, CAM and CAE – cont’
Analyze CAD geometry
Simulate, refine and optimize the design
Kinematic program, large-displacement dynamic analysis, etc.

28. Definitions of CAD, CAM and CAE – cont’
FEM이 가장 대표적인 CAE software
Stress, deformation, heat transfer, fluid flow, magnetic field, continuous field problem
Abstract model과 mesh 필요

29. Definitions of CAD, CAM and CAE – cont’
Abstract model은 detail을 없애거나 dimension을 낮춤
Mesh 생성은 preprocessor에 의해
계산 결과는 postprocessor에 의해
Optimization과 FEM의 결합
초기에 설계 결함 확인