AutoCAD 2018 Training

Documentation

 

Aims and Objectives

The aim of this tutorial is to let you practice to construct a drawing document. After studying this tutorial, you should be able to:

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

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.

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Figure 1. Drawing

 

Dimensioning and Grid Line

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Figure 2. Dimensioning

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

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Figure 3. Full-down menu

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Figure 4. Drawing Units

Select insertion scale : Millimeters

Load linetype CENTER to memory

<Format><Linetype...>
[Load][CENTER][OK]

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Set Global scale factor of lines to 100

[Show details]
 

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Global scale factor : 100
[OK]

Now create two new layers Dimension and Center .

<Layer Panel><Layer Properties>

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<New Layer>

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Layer NAME

Color

Linetype

Dimension

blue

Continue

Center

red

CENTER


and set dimension as current layer
<Close>

Then modify your current dimension style.

<Annotate Panel> <Dimensions tab> <Dimension style>

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<New>

New Style Name : New

<Continue>

<Fit tab>
Arrowheads :
First :
<Architectural tick>
Second : <Architectural tick>

<Fit tab>
Use overall scale of : 1000

<Primary Units tab>

Precision : 0
Decimal separator  : "."(Period)
[OK]

Select [New] and select [Set Current]

[Close]

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<Annotation><Linear Dimension>

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Figure 5 :  Dimensioning

Command: DIMLINEAR
Specify first extension line: [Select Endpoint A (Figure 5).]
Specify next extension line: [Select Endpoint B (Figure 5).]
Specify dimension line location: [Select Endpoint C (Figure 5).]

Now, add other dimensions.

You should have to turn off grid (press F7) in the model space before create the first viewport in layout.

Balloon
First launch the MLEADER style dialog

<Annotation><Leaders panel><Multileader Style Managers>

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Select <New..> to create a new leader type.

New Style Name : Balloon

<Continue.>

In Leader Format tab, set symbol of arrowhead to none.

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In Leader Structure tab, unselect Automatically include landing option and set scale to 100.

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Set following options in Content tab.

Multileader type : [Block]
Source block : [Circle]
Source block : [Insertion point]
[OK]

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Set Balloon to current leader type
[Set Current][Close]

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[Leaders panel][Multileader]

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Press [F8] to enable Ortho mode.

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Figure 6. Ballon

Command : MLEADER
Specify leader arrowhead location : [Select Endpoint A (Figure 6).]
Specify leader landing location : [Select Endpoint D (Figure 6).]
Enter Tag number : 1
Specify leader arrowhead location : [Select Endpoint C (Figure 6).]
Specify leader landing location : [[move cursor to point D,  move cursor upward and select point E. (Figure 6)]
Enter Tag number : 2
Specify leader arrowhead location : [Enter]

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Figure 7. Center line

[Modify panel][Move]

Command : MOVE
Select object : [Select A (Figure 7).]
Select object : [Enter]
Specify base point or [Displacement] : D
Specify displacement : 100,0

[Modify panel][Move]

Command : MOVE
Select object : [Select B (Figure 7).]
Select object : [Enter]
Specify base point or [Displacement] : D
Specify displacement : -60,0

Set layer Center as current .

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[Press F8 to turn on ORTHO mode]

[Draw panel][Line]

Command : LINE
Specify first point : 100,10000
Specify next point : [Move cursor vertically downward to display a vertically tracking line]
type : 11000
Specify next point : [Enter]
 

[Draw panel][Line]

Command : LINE
Specify first point : 4440,10000
Specify next point : [Move cursor vertically downward to display a vertically tracking line]
type : 11000
Specify next point : [Enter]

 

Documentation

Attribute Define

Before you construct a document from your objects, you should have an engineering title block ready for insertion. See Figure 8. 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 and open it

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Figure 8  Engineering drawing title block

Now you will define attributes in this title block.

[Insert tab] [Attributes][Define Attributes]


 
Figure 9  Define attributes

Add the attributes as below to your title block.


Figure
10  Define attributes

Tag

Prompt

Default:

selected point

Client

Client name?

PolyU

Select A [ Figure 12]

Date

Drawing Date

Select D (Figure 10)

Field name : Date

Example : October 01,2014
[See figure 4] [OK][OK]

Select B [ Figure 12]

Scale

Scale

1:100

Select C [ Figure 12]

Figure 11  Date

Figure 12  Title Block

<File> <Save>

Open your floor plan, set millimeters as units to scale inserted content , select Drawing units

<Format><Units>
Insertion scale: [Millimeters]

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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 13.

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Figure 13. 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 14.

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Figure 14. 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 15.

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Figure 15  Windows status bar

After setting to paper space, the screen becomes white. And the UCS icon changes to a set square. See Figure 16.
 

 

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Figure 16  Layout

 

 

Then, the format of layout should be set. See figure 17

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Figure 17

 

Right click <layout 1> and select <Page Setup manager…> <Modify…>. See figure 18

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Figure 18 Page Setup Manager Window

 

layout name : Layout 1
Paper size :
ISO A4 (297.00 x 210.00MM)
Scale
1:1
1mm = 1unit

[OK]

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Figure 19

[Select A (See Figure 19)]
[Modify tab] [Earse]

(A system variable LAYOUTCREATEVIEWPORT is used to control whether a viewport is created automatically on each layout)

Insert Title Block

Create a new layer [Title], set as current layer.

Use the DDINSERT command to insert a drawing title block. See Figure 20, the Insert dialog box. Select your title block. Then uncheck the Specify Parameters on Screen box. After that, select the [OK] button.

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Figure 20 Insert

 

 

Enable to use dialog box for attribute value entry 

Command : ATTDIA
Enter new value for ATTDIA :
1

 <Insert tab><Block panel> <Insert>

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Command: DDINSERT

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Figure 21 Insert dialog box

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

 

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Figure 22 Insert dialog box

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Figure 23 Title block inserted

To hide the frame of a viewport, simply create a new layer, add the viewport to this layer and turns the layer off.

Now create a new layer vports, set it to current.

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 <View><Viewports> <1 Viewport>

Command: VPORTS
Enter an options: _SI
Specify corner of viewport: [Select Endpoint A (Figure 23).]
Specify opposite corner: [Select Endpoint B (Figure 23).]


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Set Layer 0 as current and turn layer vports off.

Turn Grid line display off

Plotting to Scale

To be able to plot an AutoCAD drawing to scale, a zoom factor should be set. It enables us to fix the scale of the viewport.
This zoom factor of a drawing is known as XP value. It can be calculated by 1/scale required.

Example :

Viewport scale required =1:100
XP value = 1/100=0.01

First, move to model space by using the command MSPACE or double-click within viewport.

<View><Zoom> <Extend>

<View><Zoom> <Scale>
Command: _ZOOM
Enter a scale factor: 0.01XP

Now, move to paper space by using the command PSPACE or double-click outside viewport.

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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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