CAD技能等级考评大纲(英文终稿).doc

China Engineering Graphics Society (CEGS)International Society for Geometry and Graphics (ISGG)The Program of Exam for CAD Skill GradingByThe Guiding Committee for Exam of CAD Skill GradingJanuary, 2008The Guiding Committee for Exam of CAD Skill GradingAdvisor：TANG Rongxi Kenjiro Suzuki (Japan)Director：SUN JiaguangVice Director：Gunter Weiss (Germany)Members：Emiko Tsutsumi (Japan) Eduardo Toledo Santos(Brazil)Hellmuth Stachel(Austria) Sheryl Sorby(USA)Ted J. Branoff(USA)HE Yuanjun HE Yulin JIA Huanming LI Hua MA Dianfu QIANG Yi TONG Bingshu Sun Linfu TAN Janrong WANG Jing WANG Jianhua WANG TianmiaoWEI Xiaopeng YANG Haicheng ZUO Zongyi Office Director：JIA HuanmingAssociate Office Director：WANG JianhuaStaffer：ZHANG ZhengThe Editorial Committee of “The Program of Exam for CAD Skill Grading”Expert consultants：TANG RongxiEditor-in-chief：TONG BingshuMembers：JIA Huanming LIU Wei LI Xunmei REN AizhuSAHNG Fengwu WANG Jing WANG Janhua XU Guoyu XI Ping YUAN Guoqiang PrefaceComputer aided design (CAD) technology causes a revolution for the design of engineering projects and products, and gets more and more wide applications. Computer aided drafting and 3D modeling as a new working skill is required strongly by the society and now becomes a new kind of job in China. Under this background, the China Engineering Graphics Society (CEGS) joining the International Society for Geometry and Graphics (ISGG) decided to start a program named The program of exam for CAD skill grading (Program for short below). A guiding committee consisting of experts at home and abroad was established to compile this program and guide its realization.1. Aiming at the required CAD skill at present and considering the future progress of economy and technology, evolution of industrial structure, and the variety of job specifics, the required CAD technique skill and knowledge are clearly stipulated.2. Some technique documents are referenced in the process of compiling this program, such as The Draftsman Training Program, and The 3D Modeling Technician Training Program.3. The Program classifies CAD skill into three grades: the first grade is 2D computer aided drafting, the second grade is 3D geometric modeling, and the third grade is complicated 3D modeling and processing. Each grade is subdivided into two categories of design objects, i.e. the industrial products and the civil and architectural engineering projects. The first grade corresponds to the level of computer aided drafting technician; the second grade corresponds to the level of 3D digital modeling technician; and the third grade corresponds to the level of senior 3D digital modeling technician. The contents of the Program consist of four parts: skill introduction, basic knowledge, exam contents, and proportional weights of exam contents.4The Program is the result of common efforts of experts and professionals.5The Program is put into action since March 1st, 2008. The rights of explaining to the Program belong to the office of the Guiding Committee for Exam of CAD skill Grading.1 Skill Introduction1.1 Skill NameThe full name is “Skill of Computer aided Drafting and 3D Modeling”, or “CAD skill” for short. 1.2 Skill DefinitionCAD skill is an ability to make 2D engineering drawing, undertake 3D geometric modeling and generate other related digital graphics, models and documents by using computer and CAD software according to the results of accomplished engineering project or product design.1.3 Skill GradesCAD skill is classified into three grades: the grade 1 deals with 2D computer aided drafting; the grade 2 deals with 3D geometric modeling, and grade 3 deals with complicated 3D modeling and processing. If the exam of grade 1 is passed, the certificate of “Computer aided Drafting Technician” can be obtained; also the certificate of “3D Digital Modeling Technician” can be obtained, if exam of grade 2 is passed; similarly the certificate of “Senior 3D Digital Modeling Technician” can be obtained, if the exam of grade 3 is passed.1.4 Basic Education RequiredPeople to join the Program need to have high school education or above. 1.5 Training Requirements1.5.1 Time for Training For people of full-time school students, the training time would follow the originally established teaching plan. For people not accomplished CAD skill learning or training program before, the training time would be: no less than 300 hr. for grade 1; no less than 300 hr. for grade 2; no less than 250 hr. for grade 3. The training time for the higher grade is the increased time on the basis of the lower grade.1.5.2 The Teachers Teachers for CAD skill training should have qualified certificate. 1.5.3 Training Site and Facility Computers, 3D CAD software, projector, rooms with good day lighting and good illumination.1.6 Exam Items1.6.1 ExamineeThe people who want to have the ability of CAD skill. 1.6.2 Applying for1. grade 1（having one of the following conditions）(1) Finished the training time for grade 1;(2) Have 2 years experience (or more) continuously engaged in 2D computer aided drafting;(3) Obtained the “Job Certificate of Draftsman for grade 2” in the program of “The Draftsman Training Program”.2. grade 2（having one of the following conditions）(1) Finished the training time for grade 2;(2) Have 2 years experience (or more) continuously engaged in 3D geometric modeling for industrial products, or civil and architectural projects;(3) Obtained the certificate of this Program for grade 1.3. grade 3（having one of the following conditions）(1) Finished the training time for grade 3;(2) Have 2 years experience (or more) continuously engaged in 3D geometric modeling for industrial products, or civil and architectural projects;(3) Obtained the certificate of this Program for grade 2.1.6.3 Exam MethodsThrough operating CAD software on the site to do the exam questions, with the score reached 60 or above. 1.6.4 Proportion of Inspector vs. ExamineeThere should be 1:15 and no less than 2 inspectors in each exam room. 1.6.5 Exam Time180 min for exam of all grades.1.6.6 Exam Site and Facility Computers, 3D CAD software, graphics output facilities, rooms with good day lighting and good illumination.2 Basic Knowledge2.1 Basic Knowledge of Making Drawing2.1.1 Knowledge of ProjectionOrthogonal projection, axonometric projection, perspective projection2.1.2 Knowledge of Making Drawing(1) Knowledge of “National Standard for Technical Drawings” (drawing size, scale, lettering, line styles, presentation of drawing, dimensioning, etc.)(2) 2D representation (views, sections, cuts, partial enlargement, etc.)(3) Dimensioning & annotation(4) Professional drawings (part drawing, assembly drawing, architectural construction drawing, structural construction drawing, etc.)2.2 Knowledge of Computer Aided Drafting(1) Basic knowledge of computer aided drafting(2) The national standards about computer aided drafting(3) 2D drawing (4) 2D editing(5) display and controlling(6) Layers and drawing aids(7) Dimensioning, hatching and annotation(8) Professional drawings(9) File management and data exchange2.3 Basic Knowledge of 3D Modeling(1) Basic knowledge of solid modeling(2) Sketching and editing(3) Creation and editing of features(4) Creation and editing of curved surfaces(5) 3D modeling knowledge for professional drawings(6) 2D drawing produced from 3D solid model(7) Parametric and variational design methods(8) Model rendering(9) Making animation(10) File management and data exchange3 Exam Contents3.1 Grade 1 of CAD Skill (computer aided drafting)1. Category of Industrial Products（grade 1，see table 1）Table 1 Exam contents of grade 1 for category of industrial productsExam contentsSkill required Related knowledgesetting up 2Ddrawing environmentSetting up new drawing fileBasic specification of “National Standards for Technical Drawings” (drawing size and format, scale, line styles, lettering, dimensioning, etc.)Basic concepts and operations of 2D CAD software (coordinate system, unit, setting up drawing environment, commands, data input methods)drawing andediting of 2DgraphicsDrawing and editing ofplanar graphicsdrawing commandsediting commandsentity pick upcommands of graphic display andcontrollinglayers, blocks, drawing aidshatchingText anddimensioningMaking text and dimensioningthe specification for text and dimensioning in National Standarddimensioning of assembled partssoftware commands for making text and dimensioningDetail drawingmaking detail drawings2D representation methods of objectslayout of views for detail drawingtext and dimensioningsurface roughness, dimension tolerance, form and location tolerancepresentation of standard parts andcommonly used partsAssembly drawingmaking assembly drawingmethods for making assembly drawingview selection of assembly drawingdimensioning, numbering, bill of material of assembly drawingscomputer aided generation of 2Dassembly drawingGraphic filemanagementrealizing graphic file management and data exchangecommands of graphic file operationgraphic file formats and exchange2. Category of Civil and Architectural Engineering Projects（grade 1，see table 2）Table 2 Exam contents of grade 1 for category of civil and architectural engineering projectsExam contentsSkill required Related knowledgeSetting up drawing environmentSetting up new drawingfileBasic specification of “NationalStandards for Technical Drawings” (drawing size and format, scale, line styles, lettering, dimensioning, etc.)Basic concepts and operations of 2D CAD software (coordinate system, unit, setting up drawing environment, commands, data input methods)drawing andediting of 2DgraphicsMaking drawing andediting of planar graphicsdrawing commandsediting commandsentity pick upcommands of graphic display and controllinglayers, blocks, drawing aidshatchingText and dimensioningMaking text anddimensioningthe specification for text anddimensioning in National Standarddimensioning of assembled partssoftware commands for making text anddimensioningArchitectural workingdrawingMaking architecturalworking drawings(general layout, plan, elevation, section, detaildrawing)representation methods of architectural working drawingdimensioning of architecturalworking drawingStructural workingdrawingMaking structural working drawing (reinforced concretestructure, steel structure,structural components,detail drawing )representation methods of structural working drawingdimensioning of structural working drawingGraphic filemanagementRealizing graphic filemanagement and dataexchangeoperation commands of graphic filegraphic file formats and exchange【Notes】Drawings of grade 1 for civil and architectural engineering projects are specified as follows: (1) Architectural working drawing, such as general layout, plan, elevation, section, detail drawing, etc. ;(2) Structural working drawing, such as reinforced concrete structure, steel structure, structural components, detail drawing, etc. ; (3) Not including building equipment and installation working drawings, such as heating & ventilation, air conditioning, electrical appliance, water-supply & sewerage, etc. 3.2 Grade 2 of CAD Skill (3D geometric modeling)1. Category of Industrial Products（grade 2，see table 3）Table 3 Exam contents of grade 2 for category of industrial productsExam contentsSkill required Related knowledgeSetting up 3Dmodeling environment for parts or assembliesSetting up new 3D model file for parts orassembliesbasic knowledge of solid modeling for parts basic knowledge of 3D assembly modelingsetting up coordinate system and modeling environment in 3D modelingsoftwareSketchingMaking sketchmaking sketchconstraints of sketchediting of sketchsetting up reference plane (customized coordinate system)display controllingFeature basedsolid modelingfor partsRealizing modeling andediting of solid modelsfor partscreating basic and subordinate featuresBoolean operationfeature editingRegular surfacemodelingModeling and editing ofregular surfacescreating 3D curvescreating basic surfacesediting surfacesgenerating solid from surface3D assemblymodelingCreating 3D assemblymodel consisting of 10 30 parts associative editing of assembly model and itsconstituent partsbottom-up assembly methodtop-down assembly methodassembly constraints and positioningediting and associative modification of assembly modelGenerating 2Dpart drawing andassembly drawingGenerating 2D partdrawing from 3D solidmodelGenerating 2Dassembly drawing from3D assembly modelbasic knowledge of making 2D drawinglisted in section 2.1operations of generating 2D partdrawing and 2D assembly drawing from 3D part model and 3D assembly modelediting and dimensioning of 2D part drawing and 2D assembly drawingGraphic filemanagementRealizing graphic filemanagement and dataexchangeoperation commands of graphic file graphic file formats and exchange2. Category of Civil and Architectural Engineering Projects（grade 2，see table 4）Table 4 Exam contents of grade 2 for category of civil and architectural engineering projectsExam contentsSkill required Related knowledgeSetting up 3D modeling environmentSetting up new 3D model filebasic knowledge of solid modelingsetting up coordinate system andmodeling environment in 3D modelingsoftwareModeling of basic primitivesCreating and editing basic primitivesknowledge of basic geometric primitivesparametric method for generating basicprimitivessketching method for generating basicprimitives (sketching, constraints, editing)Boolean operation3D modeling ofarchitectural object 3D modeling and editingof architecture andstructural components 3D modeling of building3D modeling of architectural components (wall, door, window, stair,balcony, etc. )3D modeling of structural components(beam, column, foundation, etc.)3D modeling of building andarchitecture3D modeling of building structureModeling of architectural curved surfaces Realizing curved surfacemodeling and editing ofarchitectural objects3D curve generationcurved surface creationcurved surface editinggenerating solid from curved surfacesRendering andeffect graphicsRealizing rendering andgenerating architecturaleffect graphicstexture editingshading function(surface, high lighting, reflection, refraction, transparency, concave-convexity, etc. )texture mappinglight sourcecamera positioningbasic rendering methodsImage processingUsing image processingsoftware to post processarchitectural effect graphics (color, shadow, clarity, inserting humanand flowers, etc.)application of image processing softwareinserting image fileoutput of effect graphicsGraphic file managementRealizing graphic filemanagement and dataexchangeoperation commands of graphic file graphic file formats and exchange3.3 Grade 3 of CAD Skill (complicated 3D modeling and processing)1. Category of Industrial Products（grade 3，see table 5）Table 5 Exam contents of grade 3 for category of industrial productsExam contentsSkill required Related knowledgeComplicated curved surface modelingRealizing modeling andediting of complicated curved surfacesbasic knowledge of complicated curved surfacescomplicated curved surface modeling methodscomplicated curved surface editing methodsParametric andvariational design of partsRealizing parametric andvariational design of partsknowledge of parametric and variational design for parts implementation of parametric andvariational design for partsRendering ofmodels andscenesPasting texturesRendering 3D modelsRendering scenesknowledge of surface texture and pasting rendering attributes and operations forobjectsrendering attributes and operations forscenesuse of lighting for scenesimage processing and outputAnimation creationCreating and playing animationsmaking animations considering light source and view directionmaking an aerial view or walk-through animationsaving and output of animationsAssembly andkinematics simulation Implementing assemblyand kinematics simulationmaking exploded assembly drawing andcoordinating assembly sequencemethods of realizing kinematicssimulationrecording and playing of simulationprocessGraphic filemanagementRealizing graphic file management and dataexchangeoperation commands of graphic file graphic file formats and exchange2. Category of Civil and Architectural Engineering Projects（grade 3，see table 6）Table 6 Exam contents of grade 3 for category of civil and architectural engineering projectsExam contentsSkill required Related knowledge3D modeling oflarge complicatedcivil and architectural objectsUndertaking 3D modeling of large complicated civil and architectural objectsbasic knowledge of complicatedarchitectural curved surfacesknowledge of modeling complicatedarchitectural curved surfacesknowled