exemplu din catia

7/27/2019 Exemplu Din CATIA

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CREATING AN IMPELLER WITH CATIA V5

Before you start, make sure your

units are set to English.

Go to the Generative Shape Design module,under Shape in the Start menu.

Create an Axis system by clicking the

Axis icon and hit OK,

this will default to 0,0,0 for Axis System.1

You will create 3 sets of points using the following process:

Double click the Point icon, this will stay on until you click

it again, or select another command. Select the Point on Plane option.

Key in your H and V values, then select the plane, then hit OK, then

key in your next V and H, plane and enter until done. You can find

the commands in the "Insert" drop down menu if you cannot find the icons.

The first 5 points are on the YZ plane,

(By selecting the ^ on that plane):

H:0 V:2.0 H:0.1 V:1.98 H:0.7 V:1.2 H:1.5 V:0.2 H:2.6 V:0

=PTS.1-5

Use the spline command to create Spline.1,

pick the points in line, top to bottom or bottom to top.

=Spline.1

Create Revolute.1 with the appropriate command

(Surface Revolution), in the command box:

Profile: Spline.1

Axis: Z (It will say Axis system.1\Edge.4)

Angle 1: 360 (leave Angle 2 at 0)

=Revolute.1

(You must hit OK after inputting all the values for each dialog box)

No-Show all but the Axis.

Put a plane at Z=1.5 by selecting the plane command with the dialog box values:

Plane type: Offset plane

Reference: XY Plane

Offset: 1.5

=Plane.1

Create a Spline on Plane.1 from the points:

H:-0.2 V:0.59 H:0.25 V:1.0 H:0.7 V:1.8 H:1.25 V:2.165 =PTS.6-9

=Spline.2


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Curve: Rotate.1

Distance On Curve (on)

Geodesic (on)

Point: Default

Length: 1.0 (this is the only value you have to put in) =Point.13

Use a length of 1.3 for Rotate.2 =Point.14

After selecting the icon, select the lower end

(the side to keep) then the point, dialog box shows:

=Split.1

Point type: On Curve =Split.2

Element to cut: Rotate.1

Cutting elements: Point.13

Support: None

Create a line between the vertices of Split.1 and 2. =Line.2

Create a loft from Split.1 and 2 along Line.2

=Loft.2

Create a Circular Pattern of Loft.2 with the same values used on Loft.1.

=CircPattern.2

No-Show all but Project.1 and Project.2

Rotate Project.1 and 2 again about Z, this time only 5 degrees. =Rotate.3

=Rotate.4

Split with the point at 1.5 for Rotate.3

=Point.15

Split with the point at 1.93 for Rotate.4

=Split.3Connect the curves with a line.

=Point.16

Loft (same as before) =Split.4

Circular Pattern, this time 36 instances, at 10 degrees =Line.3

=Loft.3

The surfaces are made from curves (splines), the

curves are made from points, they are associative.

=CircPattern.3

Now double click on any point (PT.6 is the best)

and put in some new values, it updates quickly.

exemplu din catia

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