Draft tutorial/pt

Introduction
Este tutorial destina-se a introduzir o leitor ao fluxo de trabalho básico da Bancada Rascunho, que inclui a criação de perfis, o uso de planos de trabalho, bem como a criação de dimensões, texto e anotações. Este tutorial usa a notação  '(X, Y, Z)'  para denotar as coordenadas necessários para definir os pontos de um objecto.



Requirements

 * FreeCAD versão 0.16 ou superior
 * O leitor sabe como usar as pestanas  'Dados'  e Vistas   para alterar as propriedades de um elemento se desejar

Procedimento
É obrigatório garantir que a ''barra de ferramentas Rascunho"  esteja  disponível para usar este tutorial.


 * 1) Iniciar FreeCAD
 * 2) Se você não tiver aberto um documento novo FreeCAD (a maioria da janela do FreeCAD parece cinzenta-out), a partir do menu, clique em Arquivo > Novo ou clique no botão Criar uma nova Documento [[Image:Document-new.svg | 32px]].
 * 3) Ative o  'Projecto Workbench' 
 * 4) Selecione o menu  'Edit' 
 * 5) Clique em  'Preferências' 
 * 6) Ir para  'Draft'  e selecione o '' 'Grid e encaixando' 'guia'
 * 7) Verifique se o  'Show Projecto snap barra de ferramentas'  está ativa

Note que você pode alterar a visibilidade da Grelha neste menu, no caso de você querer desactivá-la.

Usando Planos
Os planos são usados para restringir o comportamento das ferramentas Rascunho para um plano específico, evitando-se problemas com a localização de pontos e curvas em peças complexas. Os planos podem referenciar os eixos do sistema de coordenadas (XY, YZ, ...), ou podem utilizar uma superfície plana no documento como referência.


 * 1) Seleccione  32px  Definir plano de trabalho. Pode se  localizar dentro das 'ferramentas da Bancada Rascunho" ou dentro do  Menu Rascunho  na   divisão 'Utilities'.
 * 2) Selec o  plano XY

Creating Profiles
The creation of profiles can be done in several ways. Though it is possible to use simple arcs and lines to do most of the work, FreeCAD includes several tools to speed up the process.

Linhas e arcos

 * 1) Seleccione [[Image:Draft_Arc.png]] Arco.
 * 2) Defina o  centro em  '(0, 0, 0)' 
 * 3) Defina o "raio" a 30 mm
 * 4) O  "Ângulo inicial"  é 60,0 °
 * 5) A abertura é 60,0 °

Repetir o mesmo procedimento para um segundo arco com um raio de 25 mm, as outras propriedades permanecem inalteradas.

Vamos agora fechar o perfil com um par de linhas.


 * 1) Select [[Image:Draft_Line.png]] Line.
 * 2) Approach the Endpoint of either arc. A white point should appear, alongside this icon  [[Image:Snap_Endpoint.png|32px]] when your cursor approaches the endpoint.
 * 3) Select the endpoint of the other arc.
 * 4) Repeat for the other side of the arcs.

We now have several curves that detail a profile, however it is still not recognized as a single entity. It is possible to continue working with the elements intact, though in this case we will fuse them into a single object.

The following actions will alter the way the objects behave, making it hard to edit their properties, so it is best to do any necessary modifications before proceding.


 * 1) Select an arc and a line while pressing the CTRL key
 * 2) Click on [[Image:Draft_Upgrade.png]] Upgrade

This will fuse both objects into a Wire. Repeat until the four elements are fused into a single Wire.

Planes, Rectangles and Circles

 * 1) Click [[Image:Draft_Rectangle.png]] Rectangle
 * 2) Set the first point on (-100, -60, 0)
 * 3) Set the second point on (140, 90, 0)

The result is a Plane. Its properties can be modified to remove the filling, by changing its Display Mode to Wireframe.


 * 1) Select [[Image:Draft_Circle.png]]
 * 2) Set the center to (0, 0, 0)
 * 3) Set the radius to 15 mm

Polygons

 * 1) Select [[Image:Draft_Polygon.png]] Polygon
 * 2) The center point is located at (0, 0, 0)
 * 3) Set the radius to 50 mm
 * 4) Set the number of sides to 6

Arrays
Arrays are used to replicate an object several times in a direction, a revolution axis or along a path.
 * 1) Select the Wire that was previously created
 * 2) Click  [[Image:Draft_Array.png|32px]] Array
 * 3) In the Data tab of the object, change the Array type from ortho to polar
 * 4) Change Number Polar from 1 to 3

Adding Dimensions
Dimensions require a constant use of Snapping Constraints to properly select the points that one wishes to dimension. The Snapping toolbar is used to change the possible points that can be selected.


 * 1) Select  [[Image:Draft_Dimension.png]] Dimension
 * 2) Select the first point. This can be either an existing element or specified by coordintes. For this tutorial, the first point will alwaysvbe (0, 0, 0)
 * 3) Select the second point. Approach the midpoint of the top line of the polygon. A white point should appear alongside this icon [[Image:Snap_Midpoint.png|32px]]
 * 4) Move the cursor to the desired location of the dimension and click on it.
 * 5) Change the font size on the View tab to 6 mm

Repeat the process for the arcs and circles.

Annotations and Text
There is a slight difference between the two: it is only possible to use the second one as a profile to perform 3D operations.

Annotations

 * 1) Select  [[Image:Draft_Text.png]] Text
 * 2) Select the reference point in the 3D View. In this case, the midoint of the top arc.
 * 3) Enter your text and press Enter. Repeat for as many lines of text as you wish to input.
 * 4) Press Enter

Text

 * 1) Select [[Image:Draft_ShapeString.png|32px]] ShapeString
 * 2) Select the reference point in the 3D View. This can be an existing point or the current cursor location.
 * 3) Enter your text and press Enter
 * 4) Set the desired font size
 * 5) Leave tracking at 0 mm
 * 6) Select the path to the font file that you wish to use

Creating Blueprints
To create blueprints, it is necessary to create a Drawing  with the elements that you wish to use. Please read the Drawing tutorial for a detailed description.

We are now finished with the basic workflow for the Draft Module.

Recommended Lectures

 * For a detailed description of the workbench, please see Draft Module
 * To know more about the Snapping controls, see Draft Snap