Wednesday, April 13, 2016

basics of catia

CATIA  (Computer  Aided  Three  dimensional  Interactive  Application),  developed  by

Dassault Systems, is one of the world’s leading CAD/CAM/CAE packages. Being a solid modeling tool, it not only unites the 3D parametric features with 2D tools, but also addresses every design-design-through-manufacturing process. Besides providing an insight into the design content, the package promotes collaboration between companies and provides them an edge over their competitors.

In addition to creating solid models, sheet metal components, and assemblies, 2D drawing can also be generated in the Drafting workbench of CATIA. The drawing views that can be generated include orthographic, section, auxiliary, isometric, and detail views. We can also generate model dimension and create reference dimensions in the drawing views. The bi-directionally associative nature of this software ensures that the modifications made in the model are reflected in the drawing views and vice versa.

It is exceptionally easy to use and state of the art user interface, CATIA V5 delivers innovative technologies from maximum productivity and creativity, from the inception concept to the final products. CATIA V5 reduces the learning curve, as it allows the flexibility of using feature based and parametric designs.

CATIA provides three basic platforms: P1, P2, and P3 and P3, P1 is for small and medium sized-process- oriented companies that wish to grow toward the large scale digitized product definition. P2 for the advanced design engineering companies that required product, process, and resources modeling. P3 for the high-end design applications and is basically Automotive and Aerospace industry where high quality surfacing or class-A surfacing is used. The subject of interpretability offered by CATIA V5 includes receiving legacy data from the other CAD systems and from its on product data management modules. The real benefit is that the links remains associative. As a result, any change made to this external data gets notified and the model can be updated quickly.

CATIA V5 WORKBENCHES

CATIA V5 serves the basic design tasks by providing different workbenches as a specified environment consisting of a set of tools that allows the user to perform specific design tasks. The basic workbenches in CATIA V5 are Part design, Wireframe and Surface design,


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Assembly Design, Drafting, Generative Sheet metal Design, DMU Kinematics, and Free

Style.

Part Design Workbench

The part design Workbench is a parametric and feature-based environment in which we can create solid models. Basic requirement for creating a solid model in this workbench is sketch is drawn in the sketcher workbench that can be invoked within the part design workbench we can draw the sketch using the tool in this workbench while drawing the sketch, some constraints are automatically applied to it. We can

Also apply additional constraints and dimensions manually. After drawing the sketch exit the sketcher workbench and convert it into a feature. The tools in the part design workbench can be used to convert the sketch into a sketch-based feature. This workbench also provides other tools to apply the placed features such as fillets, chamfers and so on. These features are called the Dress-up features.


Wireframe and surface Design Workbench

The wireframe and surface design workbench is also a parametric and feature based environment, and is used to create wireframe and surface models.

Assembly Design workbench

The Assembly design workbench is used to assemble the components using the assembly constraints available in the workbench. There are two types of assembly design approaches:

1. Bottom-up                                                                               2. Top-down

In the bottom-up approach of the assembly design, the components are assembled together to maintain their design intent. In the top-down approach, components are created inside the assembly in the Assembly Design workbench.

Drafting Workbench

The Drafting Workbench is used for the documentation of the parts or assemblies created earlier in the form of drawing views and their detailing. There are two types of drafting techniques:

1. Generative drafting                                                               2. Interactive drafting

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The generative drafting technique is used to automatically generate the drawing views of the parts and assemblies. The parametric dimension added to the component in the part design workbench during its creation can be generated and display automatically in the drawing views. The generative drafting is bi-directionally associative in nature. We can also generate the Bill of material (BOM) and balloons in the drawing views.

Generative Sheet metal Design Workbench

The Generative Sheet metal Design workbench is used for the designing of the sheet metal components. Generally, the solid model of the sheet metal components are created to generate the flat pattern of the sheet, study the design of the dies and punches, study the process plan of the designing. The workbench also provides the tools needed for manufacturing the sheet metal components.

DMU Kinematics Workbench

The DMU kinematics workbench is used to design mechanism by adding joints between the components. It also allows we can simulate and analyze the mechanisms dynamically.

GTTING STARTED WITH CATIA V5-R19

Install CATIA V5-R19 on system and then start it with double-clicking on its shortcut icon display on the desktop of computer. After the system has loaded all required file to start CATIA V5-R19, a new product file, with the default name product1 will start.

.............................................................thank you.....................................................................................

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