Chapter 01

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Transcript of Chapter 01

The Worldwide Graphic Language for DesignChapter 1

Objectives

Describe the role of drawings in the design process Contrast concurrent versus traditional design processes List five professions that use technical drawings

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

2

2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Objectives (cont.)

Describe four creativity techniques Explain why standards are important Identify uses of the graphic language

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

3

2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Understanding the Role of Technical Drawings

Drawings and specifications control details of:

Product manufacture Assembly Maintenance

Technical drawings require use of standards to communicate worldwide4 2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

Understanding the Role of Technical Drawings

Technical drawings can take many forms including:

Idea or concept sketches Computation sketches Design sketches Layout drawings Part drawings 2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

5

Understanding the Role of Technical Drawings

Technical drawing forms (cont.)

Working or construction drawings Electrical drawings Installation drawings Assembly drawings

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

6

2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Understanding the Role of Technical Drawings

Technical drawings typically serve one of three purposes:

Visualization Communication Documentation

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

7

2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Understanding the Role of Technical Drawings

A wide variety of professions use technical drawings to communicate and document designs including:

Civil engineering Mechanical engineering Electrical engineering Landscape design Landscape architecture8 2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

Understanding the Role of Technical Drawings

Professions that use technical drawings (cont.)

Industrial design Construction engineering and technology Patternmaking Project management Fabrication and manufacturing 2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

9

Artistic & Technical Drawings

Graphic representation has developed along two distinct lines:

Artistic Technical

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

10

2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Artistic & Technical Drawings

Before other communication methods developed, people informed themselves through visual means including pictures From earliest recorded history, drawings have been used to represent the design of objects to be built or constructed

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

11

2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Artistic & Technical Drawings

Personal or cultural expression in design is often referred to as aesthetic design Enhancing product development is considered functional design Aesthetics and function can work hand in hand to create appealing and functional products

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

12

2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

The Design Process

The organized and orderly approach to solving problems is known as the design process The engineering design process addresses societys needs, desires, and problems by applying scientific principles, experience and creativity 2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

13

The Design Process

Different types of technical drawings, from hand sketches to CAD models, have specific functions in the engineering design process The procedure for designing products typically follows a process

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

14

2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

The Design Process

Stages of the design process include:

Problem identification Ideation Refinement/analysis Implementation/documentation

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

15

2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

The Design Process

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

16

2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

The Design Process

Ideally, the design moves through these stages but it may be necessary to return to a previous stage and repeat the process

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

17

2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Concurrent Engineering

Traditionally, design and manufacturing activities have taken place in sequential order

Although this is a logical approach, in practice it can often be wasteful

Concurrent engineering is a systematic approach that integrates the design and manufacture of products with the goal of optimizing the process18 2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

Concurrent Engineering

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

19

2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Concurrent Engineering

Life cycle design means that all aspects of a product are considered simultaneously

These aspects include:

Design Development Production Distribution Use Disposal and recycling20 2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

Concurrent Engineering

The basic goals of concurrent engineering are:

Minimize product design and engineering changes Reduce time and cost involved in taking a product from design concept to production then introduction to the marketplace

Communication between disciplines is especially important in this process21 2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

Computer-Aided Design and Product Development

Product design often involves preparing analytical and physical models of the product These models are used to study factors such as forces, stresses, deflections, and optimal part shape

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

22

2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Computer-Aided Design and Product Development

The process of constructing and studying analytical models can be simplified by using:

Computer-aided design (CAD) Computer-aided engineering (CAE) Computer-aided manufacturing (CAM)

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

23

2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Designing Quality Into Products

Quality may be designed into a product in any number of systematic ways including:

DFSS Design for Six Sigma DMAIC Define Measure Analyze Improve Control Six Sigma QFD Quality Function Deployment24 2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

The Digital Database

All the information to manage, design, analyze, simulate, package, market and manufacture a product can be shared with users through a single complex digital database

Technical Drawing 13th Edition

Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart

25

2009 Pearson Education, Upper Saddle River, NJ 07458. All Rights Reserved.

The Digital Database

Systems that electronically store the various types of data associated with design and manufacturin