Mihaela Radu 2013

CATIA TUTORIAL

Hints for drafting

1. StartMechanical Design Drafting.

2. Select the Empty Sheet, A1-A2, OK.

3. U can either use the toolbars or from Insert:

Insert ViewsProjectionsFront view. You have to go to the assembly window and select a face from

which to make this view. You can rotate using the arrows. Double click outside to finish.

You can right click the dotted line to change scale (Standard scales 1:1, 1:2, 1:5, 1:10), show center lines and

axis.

InsertViewsProjectionsProjected view to make another view from the one before.

Double click the view where you want to make sections (Right view in my case) - border becomes red.

InsertViewsSectionsOffset section View . Click in the middle of the shoulder of shaft, make a horizontal

line, double click to finish. Take the section outside the border and click to position.

For a 3D view of the transmission go to Insert Views Projections Isometric view. Then switch to the window of

the transmission and move/rotate in the viewing position that you want and click on a part. The same, double click

outside to place it. If you want an exploded view, in the Assembly window, click on Enhanced Scene from the toolbar

Mihaela Radu 2013

Scenes (Overload mode: partial). From the Enhanced scenes toolbar, click on Explode. When you select the Isometric

view in the drafting window, take care to select from the tree on the left, in Application, scene1.

Edit Sheet background. Now you work only in the background and cannot modify the views. Click Insert Drawing

Frame and title block. Create a title block which one you like. Edit here the title, your name, date… To exit, double

click Sheet 1 on the left.

To create the bill of materials, first you need to number the parts. For that, go into the assembly, in the Product

Structure Tools toolbar, click on Generate Numbering, and select Integer: 1,2,3. Then go to Analyze Bill of materials,

Define formats and add the following:

In the drafting window, go to Insert Generation Bill of materials Bill of materials. Click to place. You can edit

names, delete columns…

To number the parts, go to Insert Balloon generation. Automatically all parts are listed in the selected view. I prefer

to add them in all the views, and then decide where are best viewed and delete the others.

Sections have some problems, like thicker lines, hatching things that shouldn't be hatched. Better to modify at the end

because sometimes, after numbering, these changes are undone.

Example:

Mihaela Radu 2013

o From Properties, add Center Line, Axis, Thread.

o Some areas have thicker lines because they are hatched in the wrong way. So, select (with a drag box) that

area, click right on Properties and change the hatching with a very small pitch:

o Select the hatch of the shaft and of the screw and delete it: