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ME-441 COMPUTER SIMULATION AND ANALYSIS AUTOCAD BLOCK and WBLOCK

Dr. Herli Surjanhata

CREATE A BLOCK Start the drawing from scratch

Setup the Grid and Snap as shown below:

1

CHANGE DISPLAY TO DOT GRID.

Select View panel and click the triangle on the right of

Pick All

.

2

Pick

panel and select

and create the following layers

3

Set the layer to THICK.

Use

to draw a circle.

4

5

Continue to draw the following complete drawing:

6

Add the centerlines:

Note: Enter DIMCEN at command prompt and type − 0.1. Use Center Mark for center lines of the circle.

7

8

To make the centerline axis appears as center – currently displayed as a continuous line, do the following.

Double click the center axis of the non-circular view of the truncated cone and change the Linetype scale to 0.25 in the Properties panel.

The centerline appears on the right side of the drawing.

9

Add the text SI using MText

10

Move the text if necessary and the resulted drawing is shown below:

Make the drawing to be BLOCKed.

11

Select

.

Enter the name of SI Symbol.

Be sure that Convert to block is selected.

Click on Pick point

and select desired based point – see figure below.

12

Pick this point as handle point

Click on Select objects

and pick ALL objects.

13

Hit Enter.

Click

Test the SI block by Insert Block command.

14

Select Insert

Block

.

Select Uniform Scale.

Check Uniform Scale. Enter X value of 0.5 scaled and rotated Angle of 30 deg

15

16

USING WRITE BLOCK The block just created is only defined in the current drawing. To make it into a separate drawing for insertion into other drawing, use the WRITE BLOCK command.

At the Command prompt, enter wblock.

17

In the Write Block dialog box, pick Select Objects .

Use your pointing device to select the objects to be included in the new drawing. Press ENTER to complete object selection.

18

Hit Enter.

If you want the original objects used to create the new drawing to remain in your drawing, make sure the Delete From Drawing option is not selected. If this option is selected, the original objects are erased from the drawing. If necessary, you can use OOPS to restore them. In the Write Block dialog box under Base Point, specify the point to be the origin point (0,0,0) for the new drawing using one of these methods:

Click Pick point

and specify a point using the pointing device.

19

Under Destination, enter a file name and path for the new drawing, or click the [...] button to display a standard file selection dialog box.

20

Click OK.

TO INSERT A NEWLY CREATED SI BLOCK Start a new drawing with template e.g. A4 Title Block.

21

Pick Insert Block

.

Browse to the locatio n of the SI Block, and open it.

OK

22

Scale and pick insertion as needed.

Click Scale

.

23

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