Manufacturing Engineering

Introduction to Computer-Aided Design (CAD)

Copyright © Texas Education Agency, 2012. All rights reserved.1

Bell Work ActivityDirections: Please take out a sheet of paper

and answer the following questions.

A. Do you agree that sodas of the same brand, taste the

same even though they are manufactured at different

locations? If so, why do you think so?

B. How do you think different shoe makers make shoe sizes that are consistently the same for most of their customers? For example, if you wear a size 8, you can wear size 8 in most other

shoes.

2Copyright © Texas Education Agency, 2012. All rights reserved.

A. There are several important terms and

definitions students need to know.

B. Students will now complete the Matching Definitions handout on Computer-Aided Design.

Students may work in groups.

Warm-Up Activity Computer-Aided Design

Terms

3Copyright © Texas Education Agency, 2012. All rights reserved.

Computer-Aided Design Overview

Throughout the history of manufacturing and building construction, it has been important for engineers and architects to follow precise technical specifications.

Technical drawings have been used since ancient times to communicate the required specifications for product and building construction.

4Copyright © Texas Education Agency, 2012. All rights reserved.

Computer-Aided Design

During the 1980s, the use of CAD software increased dramatically and began to eliminate the use of the manual drafting process.

The use of CAD software is relatively easy to learn and very cost effective. Software allows viewing and modification of images from any angle (2D, 3D, etc.)

5Copyright © Texas Education Agency, 2012. All rights reserved.

Computer-Aided DesignSoftware

There are many CAD software programs available. It is important to purchase or download a version that you will be comfortable using.

Select a CAD/drafting program that can be used to create professional quality mechanical designs, house plans, blueprints, schematics and charts utilizing American National Standards Institute (ANSI) drawing standards.

6Copyright © Texas Education Agency, 2012. All rights reserved.

Computer-Aided DesignSoftware

A wide variety of CAD products can be created with the CAD software. Review a few of the following samples.

7

Castor Wheel Plumbing Layout Automobile Layout

Copyright © Texas Education Agency, 2012. All rights reserved.

8

CAD Software Command ButtonsA B C D E F G H I J K

L M N O

P Q R

S T

U

Copyright © Texas Education Agency, 2012. All rights reserved.

Use of CAD Software Command Buttons

Before getting started you will need to install or download your CAD software program.

Next open a blank drawing screen.

To get started, practice creating several basic shapes using the command buttons.

Left click and draw a circle, line, arrow and rectangle.

Left click a single click on your mouse to capture the image or use the ESC button on your keyboard.

9Copyright © Texas Education Agency, 2012. All rights reserved.

10

CAD Software Shape Project

Copyright © Texas Education Agency, 2012. All rights reserved.

11

CAD Software Automobile Project

Copyright © Texas Education Agency, 2012. All rights reserved.