The Arc and Circle Tools(1)

8/12/2019 The Arc and Circle Tools(1)

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Create the lever as shown below using the Arc and Circle tools.

Working Directory: modeling

Figure 1

1. Create a new part.

Choose

Type new_part8_ and your initials and hit

2. Set up a sketch to create the first feature.

Choose

Choose Placement

Choose the Define button

Select the Datum Plane named FRONT as the Sketch Plane


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Choose the Sketch button

Choose the Close button in the References dialog

3. Turn the display of the Datum Planes and Coordinate Systems off.

4. Zoom in on the display until the reference lines appear approximately as shown below.

Figure 2

5. Sketch the outline of the feature.

Choose the Arc Flyout

Choose the Arc , Center Point ( ) option from the flyout

Sketch the arc as shown below


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Figure 3

Click the MMB to stop the arc draw function

Double-click with the LMB on the text of the radius dimension that was created with thearc...type 10 as the new value for the dimension and hit


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Figure 4

A note about the initial scale in the Sketcher

Zoom out and pan a bit to the left to give yourself room to sketch some more curves


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Figure 5

Choose the Line tool ( )

Sketch a horizontal line

Figure 6

Choose

Choose the 3 Point Arc tool ( ) from the flyout

Sketch the arc as shown below

An important note: the size of the arc is not that important, but you want to get the arcto be tangent ( T ) to the line where it starts and you want to make sure that it is larger (indiameter) than the 10.00 arc you started the sketch with.


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Figure 7


Sketch a horizontal line

Figure 8

Choose the Selection tool ( )

Change the dimension values to match those shown below (Note that the dimensions forthe arcs are radius dimension, not diameter dimensions)

Figure 9

Choose the Continue tool ( )


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Type 6 for the Depth ( ) and hit

Choose the Both Sides icon as shown below

Figure 10

Choose from the Dashboard

Select anywhere in the graphics area that is not near the part to deselect the feature you just created

Figure 11

6. Display the Default Orientation .


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Figure 12

7. Go back to Hidden Line display and turn the display of the Datum Planes on.

Figure 13

8. Create a hole on the left end of the lever using a Cut feature.

Figure 14

Choose

Choose Placement


Since this feature is going to be Sketched on the same plane as the previous feature, andbe created in the same direction, you can utilize the Use Previous option.

Choose the Use Previous button in the Sketch dialog


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Figure 15


Choose the Close button in the References window

Turn the display of the Datum Planes off

Choose the Circle Flyout

Choose the Concentric Circle tool ( )

Select the circular solid edge as shown below...pick a point on the screen to define thediameter of the circle...click the MMB to exit the Create Circle mode

Figure 16

Change the dimension on the circle to 10


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Figure 17


Choose the Intersect All icon ( )

You are now going to use the Options pop-up pane . The contents of this pane differsbased upon the type of feature you are creating. In this case, you are going to use thepane to specify that the Cut feature you are creating should Intersect All Surfaces onboth sides ( Side 1 ) and Side 2 ) of the Sketch Plane .

Choose the Options tab as shown below

Figure 18

Notice that Side 1 is already set to Through All . All you need to do is to set Side 2 toThrough All .

Choose Through All for the Side 2 option as shown below:


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Figure 19

Choose

Choose

Return to Shaded Mode ( )

Return to the Default Orientation

Figure 20

9. Create a circular rib that is concentric to the large circular edge on the right end of thepart.

Choose


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Choose Placement


Choose the Use Previous button in the Sketch dialog


Choose the Close button in the References dialog

Choose

Choose the Concentric Arc tool ( )

Set the display to Hidden Line

Sketch the arcs as shown below

Figure 21


Sketch two vertical lines; one each between the ends of the arcs at the top and at thebottom


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Figure 22

Choose the Selection tool ( )

Hold down the LMB over the dimensions as shown below, as long as you hold down themouse button and move the mouse, you can drag the dimension


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Figure 23

Change the dimensions of the arcs to match those shown below

Figure 24


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Choose

Figure 25

Type 30 for the Depth and hit

Choose

Shade the display

Figure 26

10. Close the part.

Choose File


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Choose Erase

Choose Current

Choose Yes

End Of Demonstration

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The Arc and Circle Tools(1)