Application
This unit is suitable for those working within a drafting work environment and may be applied across a range of engineering disciplines. This unit applies to the application of surface modelling techniques using CAD modelling software for computer processing and presentation purposes.
This unit includes applications in CAD, computer graphics and part geometric design, finite element mesh generation, rapid prototyping, medical testing and visualisation of scientific research.
Prerequisites
Elements and Performance Criteria
1 | Determine surface modelling requirements | 1.1 | Check purpose, scope and information requirements for surface modelling task |
1.2 | Interpret available information relevant to project and work requirements, and identify and address further information needs | ||
1.3 | Identify and prepare equipment required to complete work | ||
1.4 | Identify and apply relevant codes, standards and symbols relevant to work | ||
1.5 | Consult appropriate personnel to ensure the work is coordinated effectively with others involved in the project | ||
1.6 | Obtain and apply workplace occupational health and safety (OHS) and environmental procedures for work |
2 | Perform surface modelling | 2.1 | Prepare 3-D environment for drawing work |
2.2 | Identify surface types, analyse surface data and prepare drawing for surface modelling | ||
2.3 | Determine key features of surface modelling software package and select methodology appropriate for task | ||
2.4 | Set up and apply wire frame modelling techniques | ||
2.5 | Set up and apply surface modelling techniques | ||
2.6 | Edit and manipulate surfaces and apply rendering techniques | ||
2.7 | Exploit surface modelling software to optimise productivity |
3 | Prepare views and annotations | 3.1 | Display isometric and orthographic perspectives |
3.2 | Extract properties from the surface model | ||
3.3 | Annotate drawing and complete required documentation |
4 | Complete CAD operations | 4.1 | Confirm drawing accurately reflects specifications, is presented according to work requirements and contains all relevant information |
4.2 | Save and file drawing elements according to organisational procedures | ||
4.3 | Prepare drawings for presentation | ||
4.4 | Evaluate work and identify areas for improvement | ||
4.5 | Close applications, perform CAD housekeeping and maintain organisational filing system |
Required Skills
Required skills |
Required skills include: obtaining relevant job instructions and specifications creating and manipulating surfaces in 3-D space saving drawing files in the appropriate format extracting the physical properties of shapes and surfaces created in 3-D space reading, interpreting and following information on written job instructions, specifications, standard operating procedures, charts, lists, drawings and other applicable reference documents checking and clarifying task-related information checking for conformance to specifications undertaking numerical operations, geometry and calculations/formulae within the scope of this unit applying rendering techniques to a 3-D model using various materials and surface finish options |
Required knowledge |
Required knowledge includes: purpose for which the model is to be used principle tools used in the creation and manipulation of model surfaces terminology associated with surface modelling features and uses of geometric, freeform and derived surfaces features and uses of wire frame and surface modelling techniques surface types features and uses of rendering techniques features and uses of materials and surface finishing options number of views required CAD software features procedures for creating ruled and revolved surfaces in 3-D space applications of ruled and revolved surfaces rendering types and preferences, render lighting techniques, views and scenes procedures for saving drawing files the various formats in which drawing files can be saved reasons for using different formats when saving drawing files procedures for extracting data with respect to the physical properties of shapes and surfaces created in 3-D space hazard and control measures associated with using CAD system, including housekeeping safe work practices and procedures terminology associated with surface modelling |
Evidence Required
The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria required skills and knowledge range statement and the Assessment Guidelines for the Training Package. | |
Overview of assessment | A person who demonstrates competency in this unit must be able to apply surface modelling techniques to 3-D models using CAD systems. |
Critical aspects for assessment and evidence required to demonstrate competency in this unit | Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts. Specifically the candidate must be able to: work within typical site/teamwork structures and methods apply worksite communication procedures comply with organisational policies and procedures, including quality requirements participate in work meetings comply with quality requirements use industry terminology apply appropriate safety procedures select and use 3-D CAD software to apply surface modelling techniques that meet design specifications. |
Context of and specific resources for assessment | This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate. This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with creating 3-D models using CAD systems or other units requiring the exercise of the skills and knowledge covered by this unit. |
Method of assessment | Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways, including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials. |
Range Statement
Wire frame modelling techniques | Wire frame modelling techniques may include: setting and using work planes shifting and working with coordinate system moving through 3-D space changing āZā depth construction techniques wire frame editing |
Surface modelling techniques | Surface modelling techniques may include: definition and use of surface primitives box, cylinder, cone, torus, wedge and editing surface primitives |
Surface types | Surface types may include: geometric, freeform and derived surfaces draft, revolved, ruled, lofted, swept, coons, offset trimmed, fillet, blend, parametric and Non-Uniform Rational B-Spline (NURBS) surfaces surface normals and reversing |
Rendering techniques | Rendering techniques may include: rendering types and preferences render lighting techniques views and scenes |
Appropriate personnel | Appropriate personnel may include: supervisor leading hand foreman manager site engineer trainer mentor teacher team member |
OHS requirements | OHS requirements may include: legislation personal protective equipment material safety management systems hazardous substances and dangerous goods code awards provisions safe work practices |
Environmental requirements | Environmental requirements may refer to: liquid waste solid waste gas, fume, vapour, and smoke emissions, including fugitive emissions excessive energy and water use excessive noise |
Resource requirements | Resource requirements may include: computer software stationary software reference documentation reference texts consumables computer printing equipment |
Sectors
Drawing, drafting and design
Employability Skills
This unit contains employability skills.
Licensing Information
No licensing, legislative, regulatory or certification requirements apply to this unit at the time of publication.