Technology Interactions ‹ Chapter Title Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Technology Interactions Computer-aided.

Technology Interactions ‹ Chapter Title Copyright © Glencoe/McGraw-HillA Division of The McGraw-Hill Companies, Inc.

Technology InteractionsTechnology Interactions

Computer-aided design uses computer systems to design products and create the drawings needed for the products to be manufactured.

Technology Interactions Chapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-HillA Division of The McGraw-Hill Companies, Inc.

CAD is the process of designing and drafting on a computer.

CAD is quicker and more accurate. It has largely replaced hand drafting.

What Is Computer-Aided Design?What Is Computer-Aided Design?

Technology Interactions Chapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-HillA Division of The McGraw-Hill Companies, Inc.

CAD AdvantagesCAD Advantages

Saves time

Is more accurate

Improves team communications

Can help determine if a design will actually work

Technology Interactions Chapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-HillA Division of The McGraw-Hill Companies, Inc.

The CAD SystemThe CAD System

Hardware

♦ Input devices, such as a keyboard and mouse

♦ Output devices, such as a monitor and a printer or plotter

Software

The computer is the main component. It has these subsystems:

Technology Interactions Chapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-HillA Division of The McGraw-Hill Companies, Inc.

Two-Dimensional (2D) CADTwo-Dimensional (2D) CAD

Can show only two dimensions of an object:

♦ Width and length

♦ Width and height

♦ Length and height

Frequently being replaced by systems that can do both 2D and 3D design.

Technology Interactions Chapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-HillA Division of The McGraw-Hill Companies, Inc.

Three-Dimensional (3D) CAD

Three-Dimensional (3D) CAD

Wireframe models resemble “stick figures.”

Technology Interactions Chapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-HillA Division of The McGraw-Hill Companies, Inc.

Three-Dimensional (3D) CAD

Three-Dimensional (3D) CAD

Surface models can look like the shape of the object.

Technology Interactions Chapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-HillA Division of The McGraw-Hill Companies, Inc.

Three-Dimensional (3D) CAD

Three-Dimensional (3D) CAD

Solid models show the shape, area, and volume of an object.

Technology Interactions Chapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-HillA Division of The McGraw-Hill Companies, Inc.

Using 3D CADUsing 3D CAD

Mechanical design

CAD/CAM

Rapid prototyping

Architectural design

Technology Interactions Chapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-HillA Division of The McGraw-Hill Companies, Inc.

Mechanical DesignMechanical Design

This engineering activity includes design of individual parts, assemblies, and entire devices.

Design often begins with computer 3D sketches that are then refined and modified, and then final details are added.

The final step may be a rendering.

Technology Interactions Chapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-HillA Division of The McGraw-Hill Companies, Inc.

CAD/CAMCAD/CAMThis process combines computer-aided design and computer-aided manufacturing.

Designs go directly from the CAD computer to another computer that controls the machine that makes the actual part.

Technology Interactions Chapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-HillA Division of The McGraw-Hill Companies, Inc.

Rapid PrototypingRapid Prototyping

Uses CAD data to create physical models for communicating ideas or to test designs.

Technology Interactions Chapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-HillA Division of The McGraw-Hill Companies, Inc.

Architectural DesignArchitectural Design

Has commercial and residential applications.

Can provide client(s) with realistic interior and exterior appearances of a planned structure.