B011130 - CAD

Italian

The course aims to develop knowledge of CAD tools and their role in the product development cycle. At the end of the course, the student acquires both the knowledge necessary to choose the most suitable geometric modelling strategy for the mechanical whole analyzed and the practical ability to correctly use parametric solid modellers based on features. in particular, the following knowledge is provided:cc3: Systematic knowledge of the key aspects of the mechanical design of industrial engineering and the related methods; for the latter, an understanding of which are the most suitable in order to define a product and its characteristics. The mechanical study of parts and assemblies, their sizing, their graphic representation are the areas of knowledge and understanding.cc8: The understanding of the wider multidisciplinary context of engineering with a particular focus on problem solving, which starts from the problem and goes back to the causes and possible measures to deal with them, which are typically multidisciplinary.cc9: knowledge of information technology and its role in supporting design. cc12: knowledge of the most suitable production process for the production of mechanical components.Application Capability:approx. 3: The ability to choose and apply appropriate methods of analysis, modeling, verification to design, analyze and machines and plants including: the interpretation and production of drawings of parts and overall with the use of software systems, the functional design of a mechanical system, applying the principles of kinematics, kinetostatics, statics and dynamics;ca7: the ability to choose and use appropriate tools and methods for the design and production of goods and services, such as software tools for three-dimensional modelling and technical information management. ca8: The ability to combine theory and practice to solve multidisciplinary engineering problems.ca10: The ability to choose the most suitable production process for the production of mechanical components.

Features of currently available CAD software packages and choice criteria;
3D modelling of solid bodies and surface bodies;
Parametric modeling: parametric and variational approaches;
Modeling constraints
2D and 3D sketches
Support geometry
3D functions
Creation and management of configurations
Assembly procedures: bottom-up and top-down
Annotations, GD&T
Toolbox: use of libraries to insert commercial parts into the model/drawing
The Finite Element Method (hints)

Knowledge of technical and industrial drafting standards.
Ability to extract from a technical drawing geometric, functional and technological information.

Frontal lessons and exercises in classroom equipped with PCs and CAD software packages

The final (oral) exam involves the creation, with the help of 3D CAD software, of a machine/device design that is discussed during the examination. Open questions are then asked about basic concepts and IT techniques.The exam includes in particular the discussion of the project carried out by the student (design choices, implementation methods); open questions regarding the methodologies of design and three-dimensional and two-dimensional representation of mechanical components and assemblies.Students must demonstrate good knowledge of basic approaches for 3D modelling; good knowledge and ability to use computer tools for 3D and 2D CAD; sufficient knowledge of standards for technical representation of mechanical components/assemblies; sufficient knowledge of annotation systems for GD&T.

The product development process;
CAD/CAE systems supporting the design process;
CAD as a common tool for design and fabrication;
tools and techinques fo virtual prototyping;
CAD software packages requirements for Mecahnical Design;
Features of currently available CAD software packages and choice criteria;
3D modelling of solid bodies and surface bodies;
Modeling strategies and desgn intent;
Parametric modeling: parametric and variational approaches;
Modeling constraints: geometric, dimensional and algebraic.
2D sketch:basic functions, associativity, automatic, geometric and dimensional constraints.
2D Sketch and its functions;
3D Sketch and its functions;
Support geometry: planes, axes and points;
The spline function;
3D functions from sketch: base extrusion, cut extrusion, etc.
3D direct functions: chamfer, fillet, mirror, etc.
Creation and management of configurations (either manually or by design tables);
Assembly procedures: bottom-up and top-down;
Assembly functions;
Annotations, GD&T;
Toolbox: use of libraries to insert commercial parts into the model/drawing;
Surface modeling and use of surfaces into the solid modeler (hints);
The Finite Element Method (hints)
The concepts will be illustrated and practiced by means of "Solidworks" software package

- Lee K., Principles of CAD/CAM/CAE Systems, Editore: Addison Wesley, Anno edizione: 1999

- Mortenson M.E., Geometric Modeling, Editore: John Wiley & Sons, Anno edizione: 1997


- Foley J.D., Van Dam A., Feiner S.K., Hughnes J.F., Computer Graphics: principle and
practice , Editore: Addison-Wesley Publishing Co., Anno edizione: 1997





Altro materiale di supporto:

- Introduzione a SolidWorks (edizione 2013)


- Tutorials SolidWorks (edizione 2013)


- P. Aspettati, S. Buralli, G. Taddei, "Strumenti e tecniche di prototipazione virtuale per la
piccola e media impresa", Tesi di Laurea A.A. 1997-1998

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