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DRAFTING TECHNIQUES I
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Here is a basic shape. From here, we will do some advanced
drafting once we put this shape on a sheet as a drawing.
Select this face,then go to drafting.
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From these simple drawings there are many
things you can do to make your drawing more
descriptive.
Adding a Title Block
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The view you
picked will now
be the front view
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The first thing that needs to be done is tomake the background active by going to
EDIT and then BACKGROUND.
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Once in Background, you will notice that the newtoolbars you have a much more sketcher like, and
one of them is FRAME CREATION. This is the one
that you click on to make a border and title block.
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Once Frame Creation is chosen, the Insert Frame and Title Block
dialog box will pop up. This is where you can add and modify the
border constraints for your drawing, and add a title block size
constraint if one is required.
Once you have chosen what you want and clicked
on OK, dont forget to go back to EDIT and turn the
Working Views back on.
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Now we can add an isometric view of our drawing.
The first to do is click on the ISOMETRIC VIEW icon
and chose the view of the drawing that you wish the
isometric to be of.
Here well use the front view.
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Catia will ask you for a plane on the 3D part for it to draw from. The easiest thing
to do here is click on VIEW and chose TILE HORIZONTALLY. Now you can see all
of your work, and when you pick a plane (as shown) you will see it automatically
update itself into your drawing (as shown). The 3D part in your drawing can be
moved until you click on a place for it to stay, then it will become a line drawing.
Choose a plane here
Move your 3D part to where you want it
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Now we have an ISOMETRIC view of our part. There are many
other drawing features Catia offers. A few are as follows
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Hidden Lines. To add them, pick the view youwish, go to Edit and pick Properties.
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Once in Properties, move
down to the Dressup box
and activate the HIDDEN
LINES box then click OK.
Highlight this box
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Another thing to add is a SECTION VIEW. Choose the Section View icon, draw the line
through the part to be sectioned (as prompted) and place the view by clicking one
more time once it is placed where you want it.
Click
hereto start
Click here
to finish
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A DETAIL can be added by clicking on the Detail icon and making the
circle around the part to be viewed when prompted. Click once to start
the circle and again to end it.
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Place the SCALE circle where the you want the detail
view to be. Click once to place the circle.
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Your detail view is now finished, with the correct balloon indicating and identifying
it. If other details are made on the same drawing, they will be numbered
sequentially.
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Another useful tool is the CLIPPING. It is like the detail view, but in reverse.
Click on the Clipping icon and place the circle the same way as you do a
detail.
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The difference between DETAIL and CLIPPING is what you are left with. Here,
you are left with only what was inside the circle, scale 2:1. The final view is placed
be clicking once where you want it to finally be.
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You may have need to change the hatching on a section view you
have done. This is accomplished by choosing the hatching (as shown)
and going to properties in the edit menu.
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Click PATTERN TABLE
Thenchoose your
pattern
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