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CATIA V5 Hybrid Surfacing and Lofting

ADDITIONAL LINKS:

www.watchtower.org- The

only official English web site

of Jehovahs Witnesses.

DJGPP DJ Delories 32-bit

DOS port of the GNU C

complier and utilities

The Free Country news on

public domain software, opensource and otherwise

CATIA has its roots in the aerospace industry, where elaborate and highly-controlled surface quality is a

must.As a rule, the simpler the surface construction method and parent geometry, the better its resulting

quality. And good surface quality means better solid-model construction and change implementation. This is

one reason that we have chosen a circle-segment arc as the basis for our top surface of revolution.

To create our surface of revolution, we will use the `Wireframe and Surface DesignWorkbench found

under the Mechanical design list.

WORKBENCHES TO BE USED:

SketcherWireframe and Surface

Design

Generative Shape

Design

Revolution Extrude

No Show Switch No Show

Quilt (Skin) Trim Surface

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CATIA V5 Hybrid Surfacing and Lofting

1. We wish to create a basic rectangular button face from our wireframe sketch. There would be several ways to do

this, and here a basic hybrid modeling approach will be demonstrated. Our basic shape will be derived from CATIA V5

parametric surfaces, and the final part closed into a solid in the next lesson.

For our button face,

we will use a surface of

revolution. Circles createvery simple and stable

geometry, which is

important later on when

making modifications.

To create a revolution

surface, simply a) select

the arc created in the

previous lesson, b) select

the H-parallel line asrotation axis c) enter

parameters of 10 degrees

and 10 degrees. CATIA

understands that the

second parameter, when

given, runs in the

opposite direction.

2. For the sides of our

button, we will use anextruded surface from a

rectangular profile. Using the Sketcher Workbench, we will create a centered 20 x 12 rectangle on our xy plane,

parallel to the H and V directions. Once leaving the sketcher, we will use the extrude function, available under the

Generative Shape Design Workbench, to create a rectangular surface through our revolution surface that is 10mm long.

Now, using the trim surface function, we will cut the inside of our revolution surface to our rectangular extrusion, and

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CATIA V5 Hybrid Surfacing and Lofting

vice-versa for the bottom half of our

rectangular surface.

The resulting trimmed faces should

then bejoined into a collective `quilt

(similar to V4 `skin entity).

[Homepage] [Engineering] [PythonD] [Webstore] [Forum]

[Resume]

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