AutoCAD 2010 Training

Documentation

 

Aims and Objectives

The aim of this tutorial is to let you practice solid modeling by revolving 2D polyline, making primitive solid box, and subtraction. After studying this tutorial, you should be able to:

     dot.gif (829 bytes)use the paper space of a drawing to construct a drawing document,
    
dot.gif (829 bytes)construct floating viewports, and
    
dot.gif (829 bytes)construct a 2D engineering document from a 3D object.

Overview

AutoCAD has two working environments, model space environment and paper space environment. To construct a model, you work in model space. To construct a 2D engineering drawing from the objects that you construct in model space environment, you switch to paper space environment. In paper space environment, you perform two tasks, inserting an engineering title block and constructing floating viewpoints to display orthographic views of the objects constructed in model space. Figure 1 shows a 3D solid model and Figure 2 shows the engineering drawing of this model.

fig1.tif (4710 bytes)

Figure 1  3D object constructed in model space

fig13.gif (3415 bytes)

Figure 2  Engineering document constructed in paper space

Documentation

Using menubar system variable to control display of menu bar.

Command: MENUBAR
Enter new value for MENUBAR <0>: 1

Then, unit of insertion scale is set to mm.

Select <Format> <Units…>. See figure 3 and 4

Figure 3. Full-down menu

Figure 4. Drawing Units

To display the Layout and Model Tab, right click PAPER /MODEL of the Windows status bar and select Display Layout and Model Tabs. See Figure 5.

Figure 5. to display layout and model tabs

To hide the Layout and Model Tab, right click Layout and Model Tabs and select hide Layout and Model Tabs. See Figure 6.

Figure 6. to display layout and model tabs

 

As we have said, documentation consists of two main tasks: Insertion of an engineering drawing title block and making of floating viewports. To change to paper space environment, select the [MODEL] button of the Windows status bar. See Figure 7.

fig2.jpg

Figure 7  Windows status bar

After setting to paper space, the screen becomes white. And the UCS icon changes to a set square. See Figure 8.

Figure 8  Layout

 

 

Then, the format of layout should be set. See figure 9

fig2a.jpg

Figure 9 

 

Right click <layout 1> and select <Page Setup manager…> <Modify…>. See figure 10.

Figure 10  Page Setup Manager Window

 

layout name : Layout 1
Paper size :
ISO A4 (297.00 x 210.00MM)
Scale
1:1
[OK]

Figure 11  Page Setup


Figure 12

[Select A (See Figure 12)]
[Modify tab] [Earse]

Before you construct a document from your 3D object, you should have an engineering title block ready for insertion. See Figure 13. This title block has miscellaneous information. You can define attribute in this title block to save your time during insertion. Download the a4 template here

fig5.gif (3290 bytes)

\

Figure 13  Engineering drawing title block

 

Attribute Define

Now you will define attributes in this title block.

[Insert tab] [Attributes][Define Attributes]


 

Figure 14  Define attributes

Add the attributes as below to your title block.

Figure 15  Define attributes

Tag

Prompt

selected point

Title

Project Title

Select A [ Figure 17]

Part-Name

Part Name

Select B [ Figure 17]

No

Drawing Number

Select C [ Figure 17]

Name

Design by

Select D [ Figure 17]

Date

Drawing Date

Select E [ Figure 17]

File

File Number

Select F [ Figure 17]

Revised-no.

Revision Number

Select G [ Figure 17]

Revised-by

Revised by

Select H [ Figure 17]

Revised-date

Revised Date

Select I [ Figure 17]

Finishing

Surface Finishing

Select J [ Figure 17]

Material

Material used

Select K [ Figure 17]

Scale

Plot Scale

Select L [ Figure 17]

Figure 16  Attributes used

Figure 17  Title Block

<File> <Save>

Insert Title Block

Use the DDINSERT command to insert a drawing title block. See Figure 18, the Insert dialog box. Select the file A4.dwg. Then uncheck the Specify Parameters on Screen box. After that, select the [OK] button. See Figure 18.

Figure 18 Insert

 

Enable to use dialog box for attribute value entry 

Command : ATTDIA
Enter new value for ATTDIA :
1

 <Insert tab><Block panel> <Insert>

Command: DDINSERT

Figure 19 Insert dialog box

Insertion point : Unselect insertion point
Scale : Unselect Specify On -screen
Rotation : Unselect Specify On -screen
[OK]

 

 

Figure 20 Insert dialog box

fig7.tif (12036 bytes)

Figure 21 Title block inserted

Because the linetype Center and Hidden are required, use the LINETYPE command to load these two linetypes to your drawing. See Figure 22.

<Properties panel> <Linetype...>

Figure 22 Load linetype

Command: LINETYPE

[Load] [HIDDEN] [CENTER]
[OK]
[OK]    

fig2f.jpg

Figure 23  Linetype tab of the Layer & Linetype Properties dialog box

Now use the SOLVIEW command to construct an engineering drawing view. The SOLVIEW command enables you to construct four kinds of drawing views: UCS views, orthographic views, auxiliary views, and section views. Because the orthographic, auxiliary, and section views require a parent view, you have to use UCS views. Select the WCS as the UCS view and set the view display scale to 0.5. Then select a center position and two diagonal corners. After that, specify a drawing view name. See Figure 23.

<Modeling panel> <Solid View>

Command: SOLVIEW
Enter the option [Ucs/Ortho/Auxiliary/Section]:
U
Enter the option [Named/World/?/<Current>]:
W
Enter view scale<1>:
0.5
Specify view center:
[Select A (Figure 23).]
Specify view center:
[Enter]
Specify first corner of viewport :
[Select B (Figure 23).]
Specify opposite corener of viewport
: [Select C (Figure 23).]
Enter view name:
TOP
Enter the option [Ucs/Ortho/Auxiliary/Section/<eXit>]:
[Enter]

FIG9.tif (11376 bytes)

Figure 24 Top view viewport constructed

Repeat the SOLVIEW command to construct a front view. See Figure 24.

 

<Modeling panel> <Solid View>

Command: SOLVIEW
Enter an option [Ucs/Ortho/Auxiliary/Section/<eXit>]:
O
Specify side of viewport to project:
[Select A (Figure 24).]
Specify view center:
[Select B (Figure 24).]
Specify view center:
[Enter]
Specify first corner of viewport:
[Select C (Figure 24).]
Specify opposite corner of viewport :
[Select D (Figure 24).]
Enter View name:
FRONT
Enter an option  [Ucs/Ortho/Auxiliary/Section/<eXit>:]
[Enter]

FIG10.gif (3550 bytes)

Figure 25  Front view viewport constructed

Repeat the SOLVIEW command to construct a section view. See Figure 25.

 

<Modeling panel> <Solid View>

Command: SOLVIEW
Enter an option  [Ucs/Ortho/Auxiliary/Section/<eXit>:]
S
Specify first point of cutting plane:
CEN of [Select A (Figure 26).]
Specify second point of cutting plane:
@1<90
Specify side to view from:
[Select B (Figure 26).]
Enter view scale<0.5>:
[Enter]
Specify view center:
[Select C (Figure 26).]
Specify view center:
[Enter]
Clip first corner:
[Select D (Figure 26).]
Clip other corner: [Select E (Figure 26).]
View name:
SECTION
Enter an option  [Ucs/Ortho/Auxiliary/Section/<eXit>:]
[Enter]

FIG11.gif (3692 bytes)

Figure 26  Section view viewport constructed

Use the LAYER command. You will find that 11 additional layers are constructed. They are:

Front-dim
Front-hid
Front-vis
Section-dim
Section-hat
Section-hid
Section-vis
Top-dim
Top-hid
Top-vis
Vports

For each viewport except the section view, there are three layers. Their names are the viewport name suffixed by -dim, -hid, and -vis. They will be used for dimensioning, placing the hidden lines, and placing the visible lines, respectively. For the section view, there is the fourth layer, -hat, which is used for the hatching lines. Finally, the Vports layer is reserved for the floating viewports.

See Figure 27.

FIG12.gif (5020 bytes)

Figure 27  Additional layers

The viewports now show the 3D object. To project a 2D drawing from the 3D objects, use the SOLDRAW command to construct drawing views. See Figure 28.

<Modeling panel> <Solid  Drawing>

Command: SOLDRAW
Select viewports to draw:
Select objects:
[Select A, B, and C (Figure 28).]
Select objects:
[Enter]

fig13.gif (3415 bytes)

Figure 28  Drawing views constructed

To complete the drawing, turn off layer Vports and set the current layer to 0. See Figure 29.

<layer Panel>

Off layer: Vports
Current layer:
0

fig14.gif (5032 bytes)

Figure 29  Layer Vports turned off

Documentation is complete. Save your drawing.

<File> <Save>

Key Points

Documentation of a 3D solid involves two major tasks to be done in paper space environment, insertion of an engineering drawing title block and making floating viewports.

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