MEE430,KIM,ME,NIU

Computer-Aided Design / Computer-Aided

Manufacturing

MEE430,KIM,ME,NIU

Computer-Aided Design and Computer-Aided Manufacturing

and Applications with Pro/E, 4th Edition, Meung J. Kim.,

2013, LuLu Publishing Co.

CAD/CAM: Theory and Practice, Ibrahim Zeid, McGraw-Hill, Inc.,

1991

Computer-Aided Manufacturing, T-C Chang, R. Wysk, and H-P

Wang, Second Edition, Prentice Hall, 1991

Engineering Graphics, F. Giesecke, et al, Fifth Edition, Macmillan

Pub. Co., 1993

Engineering Graphics, William Spence, Second Ed., Prentice Hall,

1988

Reference Books

MEE430,KIM,ME,NIU

Dr. Meung J. Kim, Professor of Mechanical Engineering

Office Hours: MTW 3:00 – 4:00 pm

Class Room: EB211

Contact: Tel: (815)753-9965, Fax: (815)753-0416, Email:

mkim@niu.edu

Teaching/Lab Assistants The teaching/lab assistants are available in cad/cam lab (EB 231) as

posted on the lab door. The lab is available 9:00 am – 6:00 pm on

weekdays. See assistants for weekend availability.

TBA

MEE430,KIM,ME,NIU

The primary goal of engineering transform ideas into products that are

economical and reliable.

The process of designing and introducing a part to manufacturing involves

a sizable investment and draws on various disciplines and resources.

Engineering is an important key to product design, product manufacturing flow, and the ability of a company to produce good products.

Design Manufacturing

Cost of design

changes

Part-cost

commitment

Cost

Product design determines

the function

appearance

cost of production

the ability to plan and control manufacturing operations.

It is known that about 70-80 percent of the resources and cost required to produce a part are committed at its design phase. The further the part in its production, the more costly it is for any design change, as shown in Fig.

MEE430,KIM,ME,NIU

MEE430,KIM,ME,NIU

Design CAD technology and tools

Manufacturing numerically controlled (NC) and computer numerically controlled (CNC) machine tools.

NC and CNC replace conventional machines, thus offering increased flexibility, superior accuracy, and shorter production cycles.

The integration of CAD and CAM is an important aspect of factory automation.

MEE430,KIM,ME,NIU

CAD/CAM integration: based on development of NC technology which have been heavily influenced by development of

NC part programming

Interactive computer graphics

Increasing emphasis on tools and paths for NC machines.

Today’s engineers must understand the influence of engineering design on the manufacturing process and overcome their isolation from the manufacturing process, and appreciate the subtleties facing CAD/CAM integration.

CAD

1. Solid Modeling (Extrude, Revolve, Sweep, and Blend)

2. Assembly and Animation

3. Mechanism Analysis (Kinematics and Dynamics)

4. Numerical Analyses (Stresses, Flows, Heat, and Dynamics)

5. Engineering Drawings (Product

Manufacturing Information)

CAM

1. NC Technology

2. Rapid-prototyping (Layering)

3. Tool-Path Generation and Simulation (Collision and Gauging)

4. NC Post-processing (Standard NC Codes Machine Specific NC Codes)

5. Production with NC Machines

Design Phases

1. Definition and Planning (Gantt Chart)

2. Engineering Specifications (QFD > House of Quality)

3. Concept Generation (Brainstorming, Brain writing, etc.)

4. Concept Generation (Decision Matrix)

5. Product Design (Drawings, Bill of Materials, Analyses, PMI)

Manufacturing Phases

1. Prototyping

2. Production

3. Product Evaluation (Quality, Cost, Time, etc.)

MEE430,KIM,ME,NIU

A. Application of knowledge of mathematics, science and engineering

B. Design and conduct experiments, as well as analyze and interpret data

C. Design of a system, component or process to meet desired needs

D. Ability to function on multi-disciplinary teams

E. Identify, formulate, and solve engineering problems Assessment Measures

F. Understanding of professional and ethical responsibility

G. Communicate effectively

H. Broad education necessary to understand the impact of engineering solutions in a global and societal context

I. Recognition of the need for, and an ability to engage in life-long learning

J. Knowledge of contemporary issues

K. Use of techniques, skills, and modern engineering tools necessary for engineering practice

MEE430,KIM,ME,NIU

1. Review the process of engineering problem solving (Outcome A,C,E,G)

2. Review computer and graphics technologies (Outcome I,J,k)

3. Introduce methodology in design (Outcome A,C,E,K)

4. Learn the geometric description in CAD/CAM (Outcome A,K)

5. Learn the geometric modeling (Outcome A,J,K)

6. Briefly introduce FEA (Outcome A,C,E,J,K)

7. Learn about applications of CAD/CAM technology (Outcome G,I,K)

8. Learn about Computer-Aided Manufacturing with NC and CNC (Outcome C,G,I,K)

9. Learn geometric description by programming and NC part programming (APT) (Outcome C,G,K)

MEE430,KIM,ME,NIU

A,C,E,G,I,J,K

MEE430,KIM,ME,NIU

1. Differential equations

2. None

3. Numerical methods, strength of materials, dynamics, kinematics

4. Linear algebra, engineering graphics

5. Numerical methods, engineering graphics

6. Numerical methods, differential equations

7. Strength of materials, dynamics, kinematics

8. Manufacturing

9. Computer programming, engineering graphics

MEE430,KIM,ME,NIU

1. Ch1,2. Introduction to computers and CAD/CAM (3 hours)

2. Ch.3. Methodology in CAD/CAM (5 hours)

3. Ch.4. Geometric Description (6 hours)

4. Ch.5. Solid Modeling (5 hours)

5. Ch.6. Brief introduction to FEM (2 hour)

6. Mid-Term (1 hour)

7. Ch.7. Application of CAD/CAM Technology (1 hour)

8. Ch.8. CAM ( 5 hours)

9. Ch.9. Geometric Description by Programming (6 hours)

10. Ch.10. NC Part Programming (6 hours)

11. Final Exam. (2 hours)

12. Modeling with ProE (4 hours) and Part Manufacturing with

CAM (3 hours) of Laser Cutting, Milling, Lathe machines

Total (49 hours)

MEE430,KIM,ME,NIU

1. Solid Modeling lab projects. Students will learn the

techniques of computer-aided solid modeling using a

commercial CAD software (Pro/Engineer®).

2. Mechanism Design lab projects. Students will learn the

computer-aided mechanism design and analysis using a

commercial software (Working Model 2D®, Pro/Motion®)

3. Finite Element Analysis and Optimization lab projects.

Students will learn the computer-aided finite element

analysis/design using a commercial software

(Pro/Mechanica®)

4. Linear Programming Optimization lab project. Students will

learn how to optimize a linear objective function subjected to

inequality constraints using a commercial software

(MathCad®)

MEE430,KIM,ME,NIU

1. Solid Modeling. Students will complete 20 lab assignments designed

to teach the basic techniques of computer-aided solid modeling,

which includes extrusion, cut, revolve, sweep, and chamfer/round.

2. Engineering Drawings. Students will complete one lab assignment

designed to teach them how to generate engineering drawings from

the solid models they created using the solid modeling software.

3. Assembly. Students will have two lab assignments designed to teach

them how to assemble the parts created.

4. Finite Element Analysis and Optimization. Students will have two lab

assignments designed to give them how FEA works with CAD

software, which includes meshing effect, design studies, and

optimization.

5. Linear Programming Optimization. Students will have a lab

assignment designed to teach optimization of a linear objective

function subjected to inequality constraints.

6. Part Production by Milling. Students will have one lab to complete a

part by Computer-Aided Milling machine.

7. Part Production by FDM. Students will have one lab to complete a

part by Fusion Deposit Model rapid-prototyping machine.

8. Part Production by Laser. Students will have one lab to complete a

part by CW80 Laser Cutting Machine.

MEE430,KIM,ME,NIU

Wk 1. Ch1,2. Introduction to computers and CAD

Wk 2. Ch.3, Methodology in CAD/CAM

Wk 3.

Wk 4. Ch.4, Geometric Description

Wk 5. Ch.5, Solid Modeling

Wk 6. Ch.6, Brief introduction to FEM

Wk 7.

Wk 8. MID-TERM (TBA)

Wk 9. Ch.7, Application of CAD/CAM Technology

Wk 10.

Wk 11. Ch.8, CAM

Wk 12. Ch.9, Geometric Description by

Programming

Wk 13. NC Part Programming

Wk 14.

Wk 15. Other Issues in CAD/CAM

Wk 16. Final Exam (As scheduled in NIU

schedule book)

Grading Policy

1. Homework: 30 %

2. Exams 70 %

Grade Distribution

A. 90 - 100 C. 70 - 79

B. 80 - 89 D. 60 - 69

MEE430,KIM,ME,NIU

Office Hours:

MTW 3:00 - 4:00 pm