Standard

 

MCA 219 – CAD/CAM Programming

Course Description

Emphasizes the development of skills in computer aided design (CAD) and computer aided manufacturing (CAM). The student will design and program parts to be machined on computer numerical controlled machines. Topics include: hardware and software, digitizer, pen plotter, drawing manipulations, tool path generation, and program uploading and downloading.

 

Competency Areas

Hours

 

Hardware and Software

Class

5

Digitizer

D. Lab

0

Pen Plotter

P. Lab/O.B.I.

6

Drawing Manipulations

Credit

7

Tool Path Generation

 

 

Program Uploading and Downloading

 

 

 

 

 

Prerequisite/Corequisite:

MCA 211

 

Course Guide

 

Competency

After completing this section, the student will:

Hours

Class

D.Lab

P.Lab/

O.B.I.

HARDWARE AND SOFTWARE

 

 

 

Components

Explain the three components of a CAD system.

 

 

 

 

Define the three types of systems.

 

 

 

 

Define CRT, processor, keyboard, graphic display, digitizer, plotter, printer, light pen, and joystick.

 

 

 

Languages

List the computer languages used in CAD/CAM systems.

 

 

 

 

Explain the types of software available (operations, applications and user).

 

 

 

Setup

Identify the parts of a CAD system and setup the system ready to load software.

 

 

 

DIGITIZER

 

 

 

Theory

Describe a digitizer and its function.

 

 

 

 

Identify the parts of a digitizer (graphics tablet) and how they are used.

 

 

 

Application

Demonstrate the ability to use the digitizer and function board in graphics using a light pen.

 

 

 

PEN PLOTTER        

 

 

 

Theory

Explain how to use a pen plotter.

 

 

 

 

Explain the advantages and disadvantages of pen plotters.

 

 

 

 

List types of pens and inks available for plotters.

 

 

 

Application

Demonstrate the use of a pen in producing graphic drawings from the CAD system.

 

 

 

DRAWING MANIPULATIONS

 

 

 

Lines

Define the alphabet of lines and identify how to select a line program from the menu using puck or light pen.

 

 

 

 

Define the alphabet of lines and identify how to select a line program from the menu using puck or light pen.

 

 

 

 

Explain the alphanumeric input method of drawing lines.

 

 

 

 

Demonstrate the methods of entering line information using a puck and function board and light pen.

 

 

 

 

Insert text using all three methods.

 

 

 

 

Explain the text insert abbreviations.

 

 

 

Geometric shapes

Explain how to input circles, ellipses, and arcs using the keyboard, digitizer and light pen.

 

 

 

 

Explain geometric modifiers.

 

 

 

 

Demonstrate how to enter irregular curves or splines using all three methods.

 

 

 

Dimensioning

Dimension drawings using all three methods.

 

 

 

TOOL PATH GENERATION

 

 

 

Theory

Explain tool path and why it may not be a straight line from one specific work point to another.

 

 

 

Application

Demonstrate how the CAD system can check tool path prior to being tested on the machine, part, and fixtures.

 

 

 

PROGRAM UPLOADING AND DOWNLOADING

 

 

 

 

Upload, run and download CAD programs and files.

 

 

 

 

Suggested Resources

 

Books

 

Autodesk, Inc. Staff. (1987). Personal computer-based CAD-CAM, CAE markets and opportunities. Cambridge, MA: Daratech.

Beazley, W. G., & Jenkins, B. L. (1987). CAD-CAM, CAE: Purchase specification templates. Cambridge, MA: Daratech.

Beeby, W., & Collier, P. (1986). New directions through CAD-CAM. Sanibel, FL: Society of Manufacturing Engineers.

Bone, J. (1987). Opportunities in CAD-CAM. Lincolnwood, IL: National Textbook Company.

Bowman, D. J., & Bowman, A. C. (1986). Understanding CAD-CAM. Carmel, IN: Sams.

Chorafas, D. N. (1988). The engineering database: Design normalization and implementation for successful CAD-CAM applications. Stoneham, MA: Butterworth-Heinemann.

Dennis, R. E. (1986). Methods of teaching CAD. New York: McGraw-Hill.

Drozda, T. J. (1989). CAD-CAM for production tooling. Dearborn, MI: Society of Manufacturing Engineers.

Drozda, T. (1989). Personal computers & CAD-CAM. Sanibel, FL: Society of Manufacturing Engineers.

Englke. (1987). How to integrate CAD-CAM systems: Management and technology. New York: Dekker.

Gunasekera, J. S. (1989). CAD-CAM of dies. New York: John Wiley & Sons.

Jensen. (1987). CAM design and manufacture. New York: Dekker.

Le Maistre, C., & El-Sawy, A. (1987). Computer integrated manufacturing: A systems approach. White Plains, NY: Quality Resources.

Mullineux, G. (1987). Computational concepts and methods. New York: Macmillan.

Stark. (1987). Strategic planning for positive CAD-CAM results. New York: Dekker.

Stark, J. (1988). Managing CAD-CAM: Implementation organization, and integration. New York: McGraw-Hill.

Wei. (1987). Developing three-dimensional CAD software for the IBM PC. New York: Dekker.