What is Computer Aided Design?

Use computers and their graphics equipment to assist designers in their design work. Referred to as CAD. In engineering and product design, computers can help designers with tasks such as computing, information storage, and drafting. In the design, a computer is usually used to carry out a large number of calculations, analysis and comparison of different schemes to determine the optimal scheme; various design information, whether digital, text or graphics, can be stored in the computer's memory or external Save and retrieve quickly; designers usually start designing with sketches, and the heavy work of turning sketches into working drawings can be left to a computer to complete; using a computer to perform graphics editing, zooming in, zooming out, translation, and rotation, etc. Graphic data processing work.

Use computers and their graphics equipment to assist designers in their design work. Referred to as CAD. In engineering and product design, computers can help designers with tasks such as computing, information storage, and drafting. In the design, a computer is usually used to carry out a large number of calculations, analysis and comparison of different schemes to determine the optimal scheme; various design information, whether digital, text or graphics, can be stored in the computer's memory or external Save and retrieve quickly; designers usually start designing with sketches, and the heavy work of turning sketches into working drawings can be left to a computer to complete; using a computer to perform graphics editing, zooming in, zooming out, translation, and rotation, etc. Graphic data processing work.
Chinese name
Computer Aided Design
Foreign name
CAD-Computer Aided Design
Appear time
1950s
Location
National Vocational Education Qualification CVEQC Elementary

Development of Computer Aided Design

Computer-aided design (CAD-Computer Aided Design) [1]
20th
Computer Aided Design
The first computer drawing system was born in the United States in the 1950s, and passive computer-aided design technology with simple drawing output functions began to appear. In the early 1960s, CAD surface film technology appeared, and commercial computer drawing equipment was introduced in the middle. In the 1970s, a complete CAD system began to form. Later, a raster scan display capable of producing realistic graphics appeared. Various types of graphic input devices such as manual cursors and graphic input boards were introduced, which promoted the development of CAD technology.
In the 1980s, with the emergence of microprocessors and memory devices made of powerful ultra-large-scale integrated circuits, engineering workstations were introduced, and CAD technology was gradually popularized in small and medium-sized enterprises. Since the mid-1980s, CAD technology has developed toward standardization, integration, and intelligence. Some standard graphics interface software and graphics functions have been introduced successively, which have played an important role in promoting the popularization of CAD technology, software migration, and data sharing; the system structure has changed from a single function in the past to a comprehensive function, and computer-aided design and assistance have emerged. Manufacturing integrated computer integrated manufacturing system; the application of curing technology, network technology, multi-processor and parallel processing technology in CAD has greatly improved the performance of CAD system; artificial intelligence and expert system technology were introduced into CAD, and intelligence appeared CAD technology greatly enhances the problem-solving ability of the CAD system, and the design process becomes more automated.
CAD has been widely used in various fields such as architectural design, electronics and electrical, scientific research, mechanical design, software development, robotics, clothing industry, publishing industry, factory automation, civil engineering, geology, computer art and other fields.
Exam level
(National Vocational Education Qualification CVEQC Elementary), (National Vocational Education Qualification CVEQC Intermediate), (National Vocational Education Qualification CVEQC Advanced)

Computer Aided Design Basic Techniques

Basic technologies include interaction technology, graphic transformation technology, surface modeling and solid modeling.

Computer Aided Design Interaction

In computer-aided design, interaction technology is essential. Interactive cad system, which means that when users use computer systems to design, people and
Computer Aided Design
Machines can exchange information in a timely manner. With an interactive system, people can conceive, proof, and modify while seeing the display results of each step on the screen of the graphical terminal at any time, which is very intuitive.

Computer aided design graphics transformation

The main function of the graphic transformation is to associate the user coordinate system with the coordinate system of the graphic output device; translate, rotate, scale, and perspective transform the graphics; and implement graphic transformation through matrix operations.

Computer aided design solid modeling

Solid modeling is the key technology for establishing 3D solid models in the fields of computer vision, computer animation, and computer virtual reality. Solid modeling technology refers to the technology that describes the shape and attributes of a geometric model and coexists in a computer, and the computer generates a realistic and visible three-dimensional graphic. [2]

Computer Aided Design System

It is usually based on an interactive computer system with graphics functions. The main equipments are: computer host, graphic display terminal, graphics tablet, plotter, scanner, printer, tape drive, and various software.

Computer-aided design engineering workstation

Engineering workstation generally refers to a single-user interactive computer system with super minicomputer functions and three-dimensional graphics processing capabilities. It has strong computing power, uses standard graphics software, has a high-resolution display terminal, and can work on a local area network with shared resources. It has formed the most popular CAD system.

Computer aided design personal computer

Personal computer (pc) systems are inexpensive, easy to operate, and flexible to use. Since the 1980s, PC performance has been constantly renovated, hardware and software have developed rapidly, coupled with the application of graphics cards, high-resolution graphics displays, and the development of PC network technology, CAD systems composed of PCs have emerged in large numbers and are rising trend.

Computer-aided design graphics input-output

effect:
In addition to the computer host and general peripheral equipment, computer-aided design mainly uses graphics input and output devices. Interactive graphics systems are especially important for CAD. The general function of a graphics input device is to send the coordinates of points on a plane to a computer.
Common equipment:
Common input devices are keyboard, light pen, touch screen, joystick, trackball, mouse, graphics tablet, and digitizer.
Equipment classification:
Graphic output devices are divided into two categories: soft copy and hard copy:
Soft copy device refers to various graphic display devices and is essential for human-computer interaction;
Hard copy equipment is often used as an accessory to a graphic display. It copies the image on the screen for storage.
There are three commonly used graphic displays: directed beam display, storage tube display, and raster scan display.
Directed beam display is the earliest application. In order to make the image clear, the electron beam must continuously redraw the graphics, so it is also called refresh display. It is easy to erase and modify graphics, and is suitable for interactive graphics.
The storage tube displays the saved image without refreshing, so it can display a large amount of data and the price is low.
The raster scan system can provide color images. The image information can be stored in the so-called frame buffer memory, and the resolution of the image is high.

CAD CAD software

In addition to the computer's own software such as the operating system and compiler, CAD mainly uses three types of software: interactive graphics display software, CAD application software and data management software.
Interactive graphic display software is used for window opening, editing, viewing, graphic transformation, modification, and corresponding human-computer interaction.
The cad application software provides functions such as geometric modeling, feature calculation, and drawing to complete various specialized designs for various professional fields. The four elements of application software are: algorithm, data structure, user interface, and data management.
Data management software is used to store, retrieve and process large amounts of data, including text and graphical information. To this end, an engineering database system needs to be established. Compared with general database systems, it has the following characteristics: the data types are more diverse, the entity relationships are complex during the design process, the values and data structures in the library often change, and the designer's operation is mainly a real-time interactive process.

Computer-aided design drawing

CAD Computer Aided Design CAD System Function

Features of modern CAD systems include:
(1) Reuse of design components
(2) Ease of design modification and versioning
(3) Automatic generation of standard components of the design
(4) Validation / verification of designs against specifications and design rules
(5) Simulation of designs without building a physical prototype
(6) Automatic design of assembly parts (a bunch of parts or other assembly parts)
(7) Output of engineering documents, such as manufacturing drawings, bill of materials
(8) Direct output from design to production equipment
(9) Direct output to machines for rapid prototyping or rapid manufacturing industrial prototypes

CAD Types of CAD systems

(1) Information retrieval CAD system [3]
It is mainly used to design products with a high degree of standardization and series. Its working principle is to turn the standardized drawings of the finalized products into graphic information and store them in the computer. Enter the necessary information according to the order requirements when designing, and after the computer performs the necessary calculations, it automatically retrieves the best standard graphics.
(2) Human-machine interactive CAD system [3]
The working principle of the human-computer interactive CAD system is generally: the designer determines and describes the design model according to his own knowledge and experience, and then the computer searches a large amount of data related to the product, and performs high-speed data and formula Calculation; through the display of sketches and standard diagrams, the designer uses the experience accumulated in long-term work to analyze them, and uses keyboards or mice and other input devices to directly modify the graphics in real-time in a human-computer dialogue. Reorganize the display, cycle repeatedly, and gradually improve.
(3) Intelligent CAD system [3]
At this stage, the application of artificial intelligence is mainly embodied in the form of expert systems, that is, the expert system is integrated with the original CAD system. Expert system is a computer software system that enables computers to use experts' expertise and reasoning and judgment capabilities for design work. In the intelligent CAD system, the expert system assumes the judgment work that needs to rely on knowledge and experience to make inferences, mainly including design process decisions (solving design ideas and problems), design technology decisions (decisions solving specific technical problems encountered in design) and Evaluation of various results. Some problems that can be described by mathematical models are solved by common CAD-aided design systems. [3]

CAD Introduction of CAD software

AutoCAD is an internationally renowned 2D and 3D CAD design software. It is the first automatic computer-aided design software produced by the American company Autodesk in 1982. It is used for 2D drawing, detailed drawing, design documents, and basic 3D design. Now it has become a popular drawing tool in the world. The .dwg file format became the de facto standard format for 2D drawings.
AutoCAD has a good user interface and its multi-document design environment allows non-computer professionals to learn to use it very quickly. AutoCAD has a wide range of adaptability and good compatibility. It can run on various PC systems and workstations, and supports more than 40 kinds of graphic display devices with resolutions from 320 × 200 to 2048 × 1024, as well as digital instruments and mice. More than 30 types, dozens of plotters and printers, which created conditions for the popularization of AutoCAD.
Haochen CAD is a well-known domestic CAD design software developed by Suzhou Haochen Software Co., Ltd. The latest version is Haochen CAD 2012.
Haochen CAD is perfectly compatible with AutoCAD. It is basically consistent with the interface, functions, operating habits, command methods, file formats, and secondary development interfaces. It also develops a large number of tools according to domestic user needs, which has a higher cost performance. In addition, Haochen CAD It also provides comprehensive solutions for the survey and design industry and manufacturing.
In 2010, Haochen received financial support from the Ministry of Industry and Information Technology to develop three-dimensional building collaborative design software. In 2012, Haochen will launch a complete set of solutions that integrate professional software such as construction, structure, plumbing, sunlight, energy saving, and collaborative design and management systems.
Zhongwang CAD is another kind of domestic CAD design software. It was developed by Guangzhou Zhongwang Longteng Software Co., Ltd. and launched the first version in 2001. The latest version is Zhongwang CAD 2011.
ZWCAD is compatible with commonly used AutoCAD, which is basically the same in terms of interface, function, operating habits, command method, and file format, but has higher cost performance and more considerate localization services. It is welcomed by users and widely used. In the fields of communication, construction, coal, water conservancy and hydropower, electronics, machinery, mold and other survey and design and manufacturing fields.
In 2010, Zhongwang Corporation purchased the well-known American 3D CAD / CAM design software company: VX at a cost of tens of millions of dollars, and launched the Zhongwang 3D2010 version in August 2010. Since then, Zhongwang Corporation has been involved in the field of 3D CAD design software.
MicroStation is an internationally renowned 2D and 3D CAD design software. The first version was developed by the Bentley brothers in 1986. Its special format is DGN, and is compatible with AutoCAD's DWG / DXF and other formats.
MicroStation is the foundation platform for Bentley Engineering Software Systems Ltd. solutions in the fields of construction, civil engineering, transportation, processing plants, discrete manufacturing, government departments, utilities and telecommunications networks.
MicroStation has strong compatibility and scalability, and can achieve many special effects through a series of third-party software. For example, using third-party plug-ins such as TurnTool, you can use MicroStation to publish online 3D display cases directly.

CAD Computer Aided Design CAD Model Data

CAD design software will provide some models, but more models need to be downloaded from the Internet. Some domestic forums and platforms will also provide related model downloads, but the accuracy and richness of the content has yet to be improved.
However, if the enterprise has multiple CAD systems in parallel, then it is necessary to configure a unified component data resource library with cross-platform capabilities, and export the model data in the standard parts library and the purchased parts library to the original CAD data format. Among the three-dimensional configuration systems, such as mainstream Autodesk Inventor, SolidWorks, CATIA, SolidEdge, Pro / E, AutoCAD, UG NX, Onespace, etc., help designers complete design work faster and improve efficiency. The PLM component data resource platform based on the Internet, PARTcommunity, seems to have built a huge and rich three-dimensional model with the power of the cloud. In foreign countries, this kind of network service is called "component library" or "data resource warehouse". Among European, American and Japanese PLM users, the popularity of PARTcommunity (PCOM for short) is no less than that of network platforms such as BLOG and SNS, which we are familiar with today.
At the beginning of 2010, PARTcommunity 2.0 (referred to as PCOM 2.0) was officially launched in Germany, and its simplified Chinese PCOM 2.0 site was officially settled in Beijing (linkable.partcommunity). The platform was co-operated by Beijing Yurui Hongxiang Technology Co., Ltd. and German Cardinas Co., Ltd. Development, which provides product models of hundreds of domestic and foreign manufacturers for free download and use by registered users, which can meet the different needs of users, such as domestic Haochen CAD, ZWCAD, Tianhe CAD, CAXA, etc. For some domestic modeling systems that have been introduced and re-developed, such as Thinkdesign (Think3), VX, etc., PARTsolutions also provides a raw format data interface.

Computer Aided Design Design Automation

The computer's own cad is designed to automate or semi-automate the computer's own design and development process. The research content includes functional design automation and assembly design automation, involving computer hardware description language, system-level simulation, automatic logic synthesis, logic simulation, microprogram design automation, automatic logic division, automatic layout and wiring, and corresponding interactive graphics systems and engineering databases system. Integrated circuit CAD is sometimes included in the scope of computer design automation.

CAD Benefits of CAD

The benefits of CAD include: reduced product development costs, increased productivity, improved product quality, and faster time to market for new products. [4]
  • The use of CAD systems to improve the visualization of final products, subassemblies, and components speeds up the design process.
  • CAD software improves accuracy and reduces errors.
  • CAD systems make designing (including geometry and dimensions, bill of materials, etc.) easier and more stable.
  • With CAD software, it's easy to reuse design data and best practices. [4]

Computer Aided Design Book Information

1 Computer Aided Design Book Information 1

Computer Aided Design--AutoCAD 2009 Practical Tutorial
Computer Aided Design
Author: Sun Jianghong editor
[5] Press: Water Resources and Hydropower Press
Published: 2009-10-1
Folio: 16
ISBN: 9787508468686
Price: $ 32.00
brief introduction
This textbook is based on the "Basic Requirements for Teaching of Engineering Graphics in General Colleges and Universities" and "Basic Requirements for Teaching of Basic Courses in Computer Graphics in General Colleges and Universities" and the national standard "Mechanical Engineering CAD Drawing" The rules are written.
This book is divided into 11 chapters, explaining the basic application technology of AutoCAD 2009 Chinese version from the perspective of entry. The book is step-by-step. From the perspective of mechanical drawing, it explains the relationship between the software and engineering drawing. It manages drawing files, plane and 3D view operations, plane drawing and annotation, and 3D object drawing.
This book is suitable as a teaching material for engineering drawing for undergraduates majoring in mechanical and near-mechanical majors in ordinary colleges and universities, and it can also be used as a reference for related engineering and technical personnel.
table of Contents
sequence
Foreword
Chapter 1 AutoCAD 2009 and Engineering Drawing
1.1 Engineering Drawings and Descriptive Geometry
1.1.1 Basic concepts
Computer aided design CAD textbook
1.1.2 Basic requirements for engineering drawings
1.1.3 International and National Standards for Engineering Drawing
1.1.4 Computer Aided Drawing
1.2 AutoCAD 2009 and Engineering Drawing
1.2.1 Development History of AutoCAD
1.2.2 AutoCAD 2009 Interface
1.2.3 The Relationship between AutoCAD 2009 Tools and Engineering Drawings
1.3 Drawings
1.3.1 Drawing Format and Scale
1.3.2 Setting of drawing format in AutoCAD
1.4 Text, lines and dimensions
1.4.1 Font
1.4.2 Graph line
1.4.3 Dimensions
1.5 Three-dimensional objects and floor plans
1.5.1 Three-dimensional space and two-dimensional projection
1.5.2 AutoCAD 2009 3D Operating Space and 2D Engineering Drawings
Exercise one
Chapter 2 Drawing Document Management
2.1 Drawing files and AutoCAD files
2.1.1 Overview
2.1.2 AutoCAD 2009 File Operations
2.2 AutoCAD 2009 commands
2.2.1 Command input method
2.2.2 Command Type
2.2.3 Entering command parameters
2.3 coordinate system
2.3.1 Cartesian and polar coordinate systems
2.3.2 User coordinate system
2.4 Set layers, line styles, and colors
2.4.1 Basic concepts
2.4.2 Setting layers
2.4.3 Set the line type
2.4.4 Set color
2.4.5 Setting the line width
2.4.6 Use the toolbar settings
Exercise two
Chapter 3 Plan View Operations and Editing
3.1 Plan view operation
3.1.1 Zoom view
3.1.2 Pan view
3.1.3 Aerial view
3.1.4 refresh view
3.2 Object selection and property changes
3.2.1 Multiple selection methods for objects
3.2.2 Selection set mode and grip editing
3.2.3 Edit Object Properties
3.3 General object editing
3.3.1 Object deletion and recovery
3.3.2 Copying objects
Exercise three
Chapter 4 Basics of 3D Drawing
4.1 Workspace and 3D Modeling Space
4.2 Standard 3D coordinate system and user coordinate system
4.2.1 Standard three-dimensional coordinate system
4.2.2 User Coordinate System (UCS)
4.3 Types and Management of 3D Images
4.3.1 Types of 3D images
4.3.2 Visual Style Manager
...
Chapter 5 Drawing of Three Views and Basic Projection Elements
Chapter 6 Basic Drawing Commands
Chapter 7 AutoCAD2009 Object Modification
Chapter 8 Dimensioning
Chapter 9 Technical Requirements and Form Processing
Chapter 10 Assembly Drawings and Auxiliary Tools
Chapter 11 3D Object Drawing and Editing
references

2 Computer Aided Design Book Information 2

Title: computer-aided design (mechanical engineering planning textbooks for colleges and universities) [6]
ISBN: 9787302282877
Author: Yuanze Hu, Guo Jing, Xiao Huimin
Pricing: 25 yuan
Publication date: April 2012
Publisher: Tsinghua University Press
brief introduction
This book more comprehensively introduces the related technology and content of CAD. The book is divided into 11 chapters, including CAD introduction and CAD system, engineering data processing, computer graphics processing basics, two-dimensional graphics rendering, three-dimensional solid rendering, Visual LISP language Programming, AutoCAD secondary development technology, intelligent CAD and design expert system, finite element principle and its application in CAD, mechanical optimization design, computer simulation. Combining the author's years of teaching experience and research results, many programs and examples have been incorporated into this book.
This book is suitable as a textbook for CAD courses in colleges and universities. It can also be used as a training and continuing education book. It can also be used as a reference for engineering and technical personnel.
table of Contents
Chapter 1 Introduction to CAD and CAD SystemOne
1.1 Connotation and Function of CAD 1
1.2 Development of CAD Technology 2
1.3 Application of CAD Technology 4
1.4 CAD system hardware 5
1.4.1 Host 5
1.4.2 External memory 6
1.4.3 Input Device 6
1.4.4 Output Device 7
1.4.5 Graphic display device 8
1.5 CAD system software 8
1.5.1 System Software 9
1.5.2 Support Software 9
1.5.3 Application Software 10
Exercise 11
Chapter 2 Processing of Engineering Data 12
2.1 Programmatic Processing of Number Tables 12
2.1.1 Programmatic Processing of One-Dimensional Tables 13
2.1.2 Programmatic processing of two-dimensional number tables 13
2.2 Documentation of Number Tables 15
2.3 One-dimensional table interpolation
2.4 Processing of Line Graphs 20
2.4.1 Formalization of Line Graphs 21
2.4.2 Formulating Line Graphs 21
2.5 Database Management of Engineering Data 23
2.5.1 Database System and Management 23
2.5.2 Microsoft SQL Server Relational Database
2.5.3 Introduction to Engineering Databases 30
Exercise 31
Chapter 3 Fundamentals of Computer Graphics 32
3.1 Coordinate transformation of two-dimensional graphics 32 3.2 Coordinate transformation of three-dimensional graphics 38
3.2.1 Basic 3D Transformations
3.2.2 Three-dimensional Composite Transformation
3.3 Application of 3D Graphics Transformations 42
3.4 Windowing and Cropping
3.4.1 Basic Concepts and Terminology
3.4.2 Window-View Transformation
3.4.3 Cropping Two-Dimensional Graphics
Exercise 46
Chapter 2 2D Graphic Drawing 47
4.1 Getting Started with AutoCAD 2010 47
4.1.1 Basic Functions of AutoCAD 47
4.1.2 Workspace of AutoCAD 2010 48
4.1.3 Basic Operations of Graphic Files
4.1.4 AutoCAD command input 55
4.1.5 Using the Mouse
4.1.6 Method of Specifying Point Positions
4.1.7 Coordinate System
4.1.8 Drawing Settings 59
4.2 Layer Management
4.2.1 Layer Features
4.2.2 Layer toolbar 61
4.3 Drawing aids
4.3.1 Snap, grid, and orthogonal modes
4.3.2 Auto Tracking
4.3.3 Show / Hide Line Width 70
4.4 Drawing 2D Graphics
4.4.1 Draw Points
4.4.2 Drawing Tectonic Lines and Rays
4.4.3 Drawing Lines
4.4.4 Draw Rectangles
4.4.5 Drawing Regular Polygons
4.4.6 Drawing Curve Objects
4.4.7 Drawing and Editing Multilines 72
4.4.8 Drawing and Editing Polylines 75
4.5 Graphic Editing
4.5.1 Selecting a Method to Modify Objects
4.5.2 Selecting Objects
4.5.3 Deleting Objects
4.5.4 Moving or Rotating Objects
4.5.5 Copying, Offsetting, or Mirroring Objects
4.5.6 Modifying the Shape and Size of an Object 79
4.5.7 Fillet, chamfer, interrupt or merge objects
4.6 Block and pattern fills
4.6.1 Blocks
4.6.2 Pattern Filling
4.7 Text and Forms
4.7.1 Text
4.7.2 Form 89
4.8 Dimensioning
Problem 96
Chapter 3 3D solid rendering 98
5.1 Coordinate System
5.2 Drawing Basic 3D Solids
5.3 Creating Solids by Stretching
5.4 Creating Entities by Rotation 102
5.5 Boolean Operations on 3D Entities
Exercises 106
Chapter 6 Visual LISP Language and Programming 107
6.1 Visual LISP Integrated Development Environment 107
6.2 Application Compilation
6.3 Loading and Running the Application
6.4 Close Visual LISP112
6.5 Visual LISP Data Types
6.6 Numerical Functions of Visual LISP
6.7 Table Processing Functions
6.8 GET Family Input Functions
6.9 Output Functions
6.10 String Processing Functions
6.11 Conditional Branch Functions
6.12 Loop Functions
6.13 Defining Functions
6.14 File manipulation functions
6.15 Calling AutoCAD Standard Functions
6.16 Visual LISP Programming Application Examples 120
Problem 122
Chapter 7 AutoCAD Secondary Development Technology 123
7.1.Parametric drawing using high-level languages
7.1.1 Command Group File
7.1.2 Parametric Drawing
7.2 User Interface Development and Design
7.2.1 Types of menu files
7.2.2 Structure and Format of Menu File
7.2.3 General Approaches to User Interface Development
7.3 Graphics System Exchanges Information with External Programs
7.3.1 Graphics Exchange File
7.3.2 Reading DXF Files in C
Exercises 139
Chapter 8 Intelligent CAD and Design Expert System 140
8.1 Concept and Development of Smart CAD 140
8.1.1 Limitations of Traditional CAD Technology
8.1.2 Concepts of Smart CAD
8.1.3 Development of Intelligent CAD 141
8.2.Smart CAD Methods
8.2.1 A Smart CAD Method Oriented to the Scheme Formation Process
8.2.2 Intelligent CAD Method Based on Design Object Expression
8.3 Representation of Knowledge
8.3.1 Predicate Logic
8.3.2 Frame Structure
8.3.3 Production Notation
8.4 Knowledge Reasoning
8.5 Design Expert System
8.5.1 Basic Structure of Expert System
8.5.2 Features of the Design Expert System
8.5.3 Establishment of Design Expert System
Problem 154
Chapter 9 Finite Element Principles and Their Applications in CAD 155
9.1 What is Finite Element?
9.2 Finite Element Analysis Process
9.2.1 Finite Element Models
9.2.2 Analysis Steps for Finite Element Method Solving
9.3 Finite Element Analysis of Plane Problems
9.3.1 Discretization of Plane Problems
9.3.2 Analysis of Planar Triangular Elements
9.4 Basic Methods of Finite Element Analysis
9.5 Integration of Finite Element Analysis Software with Other Software in CAD Systems
Problem 163
Chapter 10 Optimized Mechanical Design 164
10.1 Basic Concepts of Optimal Mechanical Design
10.2 One-dimensional search methods
10.2.1 The Golden Section
10.2.2 Quadratic Interpolation
Exercises 171
Chapter 11 Computer Simulation
11.1 Computer Simulation Overview
11.2 Computer Simulation Classification
11.3 Development and Application of Computer Simulation Technology
11.4 Computer Simulation Software
11.5 Visualization in Scientific Computing
Problem 183
References 184

3 Computer Aided Design Book Information 3

Title: CAXA Entity Design 2011 Aided Design and Production Skills Basic Tutorial
Author: Zhang Jing Huo Chen Yanhua red ed
Publisher: Printing Industry Press
Publication time: 2012-1
Folio: 16
ISBN: 978-7-5142-0335-6
Price: $ 39.00
brief introduction
"CAXA Entity Design 2011 Aided Design and Production Skills Basics Tutorial" edited by Zhang Jing and others mainly introduces the basic knowledge of cAxA Entity Design 20ll, including work interface, 2D sketch, generation of solid features, feature modification, direct editing and transformation, 3D Curve construction and surface design, rendering design, animation design, etc. to quickly master the basic usage and skills of CAXA solid design 201l. This book explains various knowledge points with a large number of examples. At the end of each chapter, a comprehensive case is arranged to comprehensively use the knowledge points described in this chapter to exercise the practical hands-on ability. The last chapter is a comprehensive case. By designing and drawing a racing model, the basic workflow of actual drawing operations using CAXA Entity Design 2011 is introduced.
"CAXA Entity Design 2011 Aided Design and Production Skills Basics Tutorial" selected the basic knowledge of CAXA Entity Design, the case is typical and practical. The source files and electronic courseware involved in the case can be downloaded from the Printing Industry Press website (www.pprint.cn).
"CAXA Entity Design 2011 Assisted Design and Production Skills Basic Course" can be used as a teaching material for CAXA entity design courses in mechanical, numerical control, industrial design and other related majors of undergraduate and vocational colleges. Beginners learn to use.
table of Contents
Chapter 1 CAXA Entity Design 2011 Application Overview
1.1 CAXA entity design 2011 working interface
1.2 File Management Operations
1.3 3D model display status settings
1.4 Basics of Smart Pixel Application
1.5 Drag and drop operations
1.6 Smart Capture
1.7 3D ball tool
1.8 Reference Frame
1.9 Unconstrained Assembly Tool and Position Constraint Tool
1.10 3D Smart Labeling Tool
1.11 Comprehensive Case-Ring Connection Sleeve
1.12 Exercises
Chapter 2 2D Sketches
2.1 2D sketch overview
2.2 Sketching
2.3 Sketch constraints
2.4 2D sketch modification
2.5 Importing 2D sketches
2.6 Comprehensive Case-Sketch of Sheet Metal Parts
2.7 Exercises
Chapter 3 Entity Feature Generation
3.1 Extruded features
3.2 rotation
3.3 Scan
3.4 Stakeout
3.5 Thread Features
3.6 Thickening Features
3.7 Comprehensive Case-TV Remote Control
3.8 Exercises
Chapter 4 Feature Modification, Direct Editing, and Transformation
4.1 Shelling
4.2 Transition
4.3 Surface Draft
4.4 Boolean operations
4.5 Split Parts
4.6 Delete body
4.7 Direct editing
4.8 Feature Transformation
4.9 Comprehensive Case-Computer Desk
4.10 Exercises
Chapter 5 3D Curve Construction and Surface Design
5.1 Application of 3D space points
5.2 Creating 3D curves
5.3 Editing 3D curves
5.4 Create Surface
5.5 Editing surfaces
5.6 Comprehensive Case-Mouse Outline
5.7 Exercises
Chapter 6 Rendering Design
6.1 Typical method of modifying part appearance properties
6.2 Renderer Tools
6.3 Light source application
6.4 Output image
6.5 Comprehensive Case-Bulb Rendering
6.6 Exercises
Chapter 7 Animation Design
7.1 Create Animation with Smart Animation Wizard
7.2 Smart Animation Editor
7.3 Using Smart Animation Property Sheet
7.4 Output Animation File
7.5 Mechanism simulation animation design
7.6 Comprehensive Case-Bullet Design
7.7 Exercises
Chapter 8 Comprehensive Design of Race Cars
8.1 racing wheels
8.2 Racing body
8.3 Racing deflector
8.4 Racer bumper
8.5 Racing Assembly

Computer Aided Design Books

Computer Aided Design Basic Information

Title:
Computer Aided Design
Computer Aided Design
ISBN: 7-113-10934
Author: Gao Wen-sheng, etc.
Price: 20.00 yuan
Publication date: 2010.03
Applicable major: computer major
Publisher: China Railway Publishing House

Introduction to Computer Aided Design

This book combines the powerful functions of AutoCAD 2009, led by interior design examples. The content is from shallow to deep, and the whole design process runs through the book. It explains the basic knowledge of AutoCAD, operation methods, drawing tools, editing commands, and the design process. Applied drawing commands and drawing techniques, etc. The language is concise and focused, and it is equipped with indoor elevations, indoor floor plans, clothing store layouts and architectural floor plans in the theory of indoor and outdoor architecture design. While explaining various functions and usage methods, it will lead the readers to learn while practicing Combining learning with practice, and gradually learn design and drawing methods in actual combat, so that readers can quickly improve design skills and comprehensive application ability.

Computer Aided Design Book Catalog

Part I Basics
Chapter 1 Basic Overview of New Features in AutoCAD 2009 Chinese Edition 3
1.1 AutoCAD 2009 Overview 3
1.2 AutoCAD 2009 new features3
1.3 Understanding AutoCAD 2009 7
1.3.1 Opening Multiple Scene Files 7
1.3.2 Converting "People" File Views 7
1.4 Basic Calling Method of AutoCAD Commands 8
1.4.1 Entering Commands 8
1.4.2 Command Prompt 8
1.4.3 Exit Commands and Transparent Commands 9
1.4.4 Repeating Command Execution 9
1.4.5 AutoCAD text windowTen
1.5 Other Function Operations 10
1.5.1 View Function 10
1.5.2 Opening Multiple Graphic Files Simultaneously 10
Think about it 11
Chapter 2 AutoCAD 2009 Basic Knowledge and Basic Operations 12
2.1 AutoCAD 2009 Basics 12
2.1.1 AutoCAD 2009 start and work interface 12
2.1.2 Title bar and menu bar 13
2.1.3 Toolbar and Status Bar 13
2.1.4 Drawing window and command line window 15
2.1.5 Cursors and Coordinates 15
2.1.6 Model Tags and Layout Tags 15
2.2 Processing of AutoCAD File Commands 15
2.2.1 Creating and Opening Graphic Files 15
2.2.2 Saving and Exiting Graphic Files 16
2.2.3 Setting the Password 18
2.3 Coordinate systems and coordinates 18
2.3.1 Application and Setting of WCS and UCS Coordinate System 18
2.3.2 Entering Coordinates 19
2.4 Output and Printing 20
2.4.1 Model Space and Paper Space 20
2.4.2 Floating Viewports and Model Space 21
2.5 Setting the Insert Block 22
Think about 24
Chapter 3 AutoCAD 2009 Auxiliary Tools Use and Skills 25
3.1 Layer Use 25
3.1.1 Layer Overview 25
3.1.2 Creating New Layers and Changing Layer Properties 25
3.1.3 Setting the Line Style 27
3.1.4 Setting Colors 28
3.2 Drawing Environment 28
3.2.1 Drawing Unit Setting 28
3.2.2 Graphical Boundaries
3.2.3 Drawing Environment Setting 30
Think about 33
Chapter 4 Application of AutoCAD 2009 Drawing Tools 34
4.1 Overview of 2D Modeling 34
4.2 Drawing Tools
4.2.1 Mouse and Keyboard Input Commands
4.2.2 Using Drawing Tools 35
4.2.3 Drawing Tool Use Tips 37
4.3 Comprehensive Cases of 2D Floor Plan Making 39
4.3.1 Making a sink 39
4.3.2 Making Double Beds 41
Think about it and practice it 45
Chapter 5 AutoCAD 2009 Editing Commands 46
5.1 Editing Commands
5.2 How to Use Edit Commands
5.2.1 "Abandon" and "Redo" Commands
5.2.2 The "Delete" Command 47
5.2.3 The Copy Command
5.2.4 The "Mirror" Command
5.2.5 The Offset Command
5.2.6 The Array Command
5.2.7 The Move Command
5.2.8 The Rotate Command
5.2.9 The Zoom Command
5.2.10 The Stretch command 50
5.2.11 The Trim command 51
5.2.12 "Extend" command 51
5.2.13 "Break at Point" Command 51
5.2.14 "Interrupt" command 52
5.2.15 "Merge" command 52
5.2.16 "Chamfer" command 52
5.2.17 Fillet Command 53
5.2.18 The Decompose Command 53
5.3 Comprehensive Case of Drawing 2D Graphics 53
5.3.1 Drawing Roman Columns
5.3.2 Drawing a Screwdriver
Think about it and practice it 59
Chapter 6 Drawing Common Legends 60
6.1 Design Center Management 60
6.2 AutoCAD 2009 Design Center Legend 61
6.2.1 Calling AutoCAD's own block 62
6.2.2 Deleting Tiles
6.2.3 Creating Tiles
6.3 Making Common Legends 64
6.3.1 Making a Gear Legend 64
6.3.2 Making a Double Door Legend 68
Think about practice 72
Chapter 7 Dimensioning and Editing 73
7.1 Dimensioning methods 73
7.1.1 Linear Labeling
7.1.2 Alignment
7.1.3 Arc Length Labeling
7.1.4 Coordinate Annotation
7.1.5 Radius Labeling
7.1.6 Bend callouts
7.1.7 Diameter Marking
7.1.8 Angle Labeling
7.1.9 Quick Annotation
7.1.10 Baseline labeling
7.1.11 Continuous labeling 80
7.1.12 Isometric Calling 81
7.1.13 Break callouts 81
7.1.14 Tolerance labeling
7.1.15 Center Labeling 83
7.1.16 Inspection labeling 83
7.1.17 Bend linear dimensioning 83
7.1.18 Tilt callouts 84
7.2 True Relational Annotations
7.2.1 Geometrically Driven Relational Annotations
7.2.2 Space Beyond Labeling
7.3 Setting callout styles
7.3.1 New dimension styles
7.3.2 Modifying callout styles
7.3.3 Style Substitution
7.3.4 Comparing callout styles
7.4 Editing annotations 92
7.4.1 Editing callout text 92
7.4.2 Label Updates
7.5 Dimensioning Example 93
7.5.1 Marking the size of the construction plan 93
7.5.2 Marking the belt size
Think about practicing 98
Chapter 8 AutoCAD 2009 Creating 3D Models 99
8.1 Overview of 3D Modeling
8.2 Drawing 3D Graphics
8.3 Setting the viewpoint
8.3.1 Set Viewpoint 100 with VPOINT Command
8.3.2 Setting a Viewpoint Using a Dialog Box
8.3.3 Setting Special Viewpoints Quickly
8.3.4 Observing and Drawing Graphics
8.4 Setting the User Coordinate System
8.4.1 User Coordinate System
8.4.2 Setting the User Coordinate System
8.4.3 Using the UCS window
8.5 Creating a 3D Model 105
8.5.1 Drawing Basic Surfaces
8.5.2 Drawing Three-Dimensional Faces
8.5.3 Drawing 3D Solids
8.5.4 Boolean Operations
8.5.5 Visual Style and Rendering
8.6 Comprehensive Training Cases for 3D Model Making 111
8.6.1 Drawing a 3D Model of a Square Table 111
8.6.2 Drawing the Bridge Model
Think about it 116
Part 2 Application
Chapter 9 Drawing Interior Design Elevations 121
9.1 Brief Description of Interior Design Facades 121
9.2 Draw the entrance map
9.2.1 Establishing the entrance elevation area 122
9.2.2 Drawing Auxiliary Lines
9.2.3 Draw the entrance map
9.2.4 Labeling the dimensions of the entrance elevation 127
9.3 Drawing the Study Facade 128
9.3.1 Drawing Computer Desk Combinations
9.3.2 Drawing Bookshelf Combinations
9.3.3 Establishing Study Areas
9.3.4 Finishing the elevation of the study 131
9.4 Drawing a Bedroom Elevation
9.4.1 Establishing Entrance Areas
9.4.2 Drawing Auxiliary Lines
9.4.3 Drawing a Bedroom Elevation 133
9.4.4 Dimensioning Bedroom Elevation 134
9.4.5 Labeling bedroom materials
Practice 137
Chapter 10 Drawing Interior Design Floor Plans 138
10.1 Brief Introduction to Interior Design Floor Plans 138
10.1.1 Floor Plan
10.1.2 Ceiling Plan
10.2 Drawing the Floor Plan of a Hotel Suite
10.2.1 Creating a Hotel Suite Floor Plan Area 139
10.2.2 Drawing Auxiliary Lines
10.2.3 Drawing the Floor Plan of a Hotel Suite
10.2.4 Label hotel suites 143
10.2.5 Decorating Hotel Suite Spaces
10.2.6 Setting the Floor Texture of the Hotel Suite 145
10.3 Drawing a Two-Bedroom Plan
10.3.1 Creating a Two-Bedroom Plan Area
10.3.2 Drawing Auxiliary Lines
10.3.3 Drawing a Two-Bedroom Plan
10.3.4 Dimensioning Two Bedrooms
10.3.5 Marking Two-Bedroom Text
10.3.6 Setting the Two-Bedroom Floor Material 151
10.3.7 Arranging a Two-Bedroom Space
10.3.8 Layout of Two-Bedroom Ceiling
10.3.9 Arranging Two-Bedroom Lighting 155
Practice 157
Chapter 11 Drawing the Layout of the Store 159
11.1 Store Design
11.1.1 Overview of Store Interior Design 159
11.1.2 The Psychology of Stores and Consumers
11.1.3 Store Design 160
11.2 Draw a floor plan of a clothing store 161
11.2.1 Establishing a Floor Plan Area of a Clothing Store 161
11.2.2 Drawing Auxiliary Lines
11.2.3 Drawing a floor plan of a clothing store 162
11.2.4 Labeling the text of clothing stores 164
11.2.5 Arranging Clothing Stores 165
11.2.6 Labeling Clothing Store Sizes 166
11.3 Setting up clothing store materials 167
11.4 Clothing Store Top Layout 168
11.4.1 Drawing the ceiling of a clothing store 168
11.4.2 Top view of a clothing store
11.4.3 Labeling the top view of clothing stores 171
11.5 Drawing the Elevation of a Clothing Store 172
Practice 175
Chapter 12 Drawing Building Plans 177
12.1 Understanding Building Plans
12.1.1 General Graphic Design
12.1.2 Methods of General Graphic Design
12.2 Drawing a Sports Ground Plan
12.2.1 Creating a Sports Ground Plan Area
12.2.2 Drawing Auxiliary Lines
12.2.3 Drawing a Sports Ground Plan
12.2.4 Dimensioning the Sports Ground Plan 185
12.3 Drawing a Kindergarten Plan
12.3.1 Establishing a floor plan area for a kindergarten
12.3.2 Drawing a Kindergarten Plan
12.3.3 Dimensioning the Kindergarten Plan
Practice 192
References 193

IN OTHER LANGUAGES

Was this article helpful? Thanks for the feedback Thanks for the feedback

How can we help? How can we help?

RELATED ARTICLES