31.
Press the tangent function button, in
the Active Function Ribbon Bar to activate it.
It may once again be
useful to zoom in on the area of the drawing for easier selection of the line
arc tangency point.
32.
Right click the mouse while anywhere
within the graphics display area and select Auto Cursor to Disable All, then place
a check mark to Enable only the Tangent setting and press the check mark button
to accept the changes.
33.
Use the mouse to position the
selection point over the .25 radius arc and left click to pick the arc, press
Enter to accept the selection.
34.
Press the letter A on the keyboard to
activate the Angle mode.
35.
Key in an angle of 210° and then
press Enter
(because
180° + 30° = 210°).
36.
Press the letter L on the keyboard to
activate the Length mode and enter a value of 2.0 inches.
This length will be
sufficient to intersect with the vertical line rising from the X, Y zero
location we will draw next. A line 2 inch es long will be drawn in both
directions from the tangency point.
37.
Select the line you wish to keep
(left of the tangent arc) by left clicking on it and then pressing Enter,
Enter.
38.
Right click the mouse anywhere within
the graphics display area and select Auto Cursor again to adjust the settings
to include Endpoints.
39.
While the line command is still
active, select the endpoint of the line at the X, Y zero location.
40.
Press the letter V on the keyboard to
activate the vertical line function.
41.
Press the spacebar and then key in
Y1.5, Enter, Enter, Enter to accept the entry.
If the drawing exceeds the display area of the
screen, press the F2 function key to Unzoom the current display by .5.
Now we will take the steps necessary to trim and
delete the excess lines, chamfer and fillet the corners, as specified on the
print.
42. From the Menu Bar select
Create,
and then use
the mouse to select Fillet, and then Fillet Entities.
In the Operator Prompt area, the prompt reads:
“Fillet select an entity”. (The default fillet size is a .250 radius). Press
the letter R on the keyboard and enter the desired value.
43.
Press the letter R on the keyboard
and key in .2 for the radius and press Enter.
Note: The Style should be set to Normal
on the Active Function ribbon Bar.
44. The user prompt states “Fillet: select an
entity”.
Use
the mouse to select the entities in the lower right hand corner of the part.
Choose line 1 and then choose line 2 as shown in Figure 18.
Figure 18 Selection
Points for the .2 Radius Fillet
45. While still in fillet mode,
change the
radius to .12 for the 2 other fillets by pressing the letter R on the keyboard
and entering .12, Enter.
46.
Pick each vertical and horizontal
line as shown in Figure 19, and press Enter after all four picks to accept the
fillets.
All fillets are done, now we need to trim the
excess lines off from the left angular and vertical lines.
47.
From the Menu Bar select Edit,
Trim/Break, Trim/Break/Extend.
Figure 19 Selection
Points for the .12 Radius Fillets
48.
On the Active Function Ribbon Bar
press in the “Trim 2 entity” button.
In the Operator Prompt area, the prompt
reads “Select the entity to trim/extend”.
49.
Choose the angular line, then the last
vertical line as shown in Figure 20.
Figure 20 Selection
Points for Trimming
The excess lines will be trimmed. Now the
chamfers must be created.
50.
From the Menu Bar select Create,
Chamfer, Chamfer Entities . . .
51.
Set the value for the chamfer to .05 by
pressing the number 1 on the keyboard and entering .05 and pressing Enter.
(The default value for
distances is .25, change as needed.)
52.
Pick the necessary lines as shown in
Figure 21 and press Enter to accept.
Figure 21 Selection
Points for Chamfering
53.
Press the number 1 on the keyboard
again to change the chamfer distance setting to .15 for the last chamfer.
54.
Pick the necessary lines as shown in
Figure 22 and press Enter to accept.
The construction line that was used for
the creation of the .25 arc, tangent to the angular line, should be deleted
now.
Selection Points for
Chamfering the .15 Distance
55.
From the Menu Bar, select Edit,
Delete, Delete entities . . .
56.
Use the mouse to position the cursor
over the construction line, press the left mouse button to select it and then
press Enter.
The
line will be deleted. The drawing is complete and the file should be saved.
57.
From the Menu Bar select File, Save
As
The
windows dialogue box titled “Save As” will appear.
58.
Key in the File Name desired and
Press the Save button. For this example, we have chosen the File Name of
Contour
.
The completed drawing should be displayed in the
graphics area as shown in Figure 23.
Figure 23 Finished
Geometry
Copyright 2007,
Industrial Press, Inc.