PART II - Drawing sketches for solid models
The Line and Rectangle Tools
Starting a New File
Choose the New tool from the Launch panel of the Get Started tab; the Create New File dialog box is displayed. In this dialog box, choose Metric, and then double-click on the Standard (mm).ipt icon to start a standard metric template.
Drawing the Sketch
As evident from the image below, the sketch consists of two nested loops: inner loop and outer loop. While extruding a nested loop, the inner loop can be subtracted from the outer loop. In this way, a cavity will be created automatically in the model when you extrude the sketch. This reduces the time and effort required in creating the inner cavity as another feature. Therefore, you can draw both the loops together for this tutorial.
1. Choose the Start 2D Sketch button from the Sketch panel of the 3D Model tab; the default planes are displayed and you are prompted to select the sketching plane.
2. Choose the Home button of the ViewCube; the current orientation of the sketch plane is changed.
3. Now, select the XY plane as the sketching plane from the graphics window; the Sketching environment is invoked and the XY plane becomes parallel to the screen.
4. Choose the Line tool from the Create panel. Next, move the cursor and click when the cursor displays -40 and -25 in the Pointer Input or press the TAB key and then enter the X and Y coordinate values in the Pointer Input. As you specify the first point, you are prompted to specify the endpoint of the line and the Pointer Input is changed to Dimension Input.
5. Enter 80 in the length input field of the Dimension Input and press the TAB key; the angle input field becomes active. Enter 0 and then press ENTER; the first line is created and the Dimension Input is displayed again.
6. Move the cursor up and then enter 10 in the length input field of the Dimension Input. Next, press the TAB key and enter 90 in the angle input field and then press ENTER; the second line is created and the Dimension Input is displayed again.
7. Move the cursor toward the left and then enter 15 in the length input field. Next, press the TAB key and enter 90 in the angle input field. Next, press ENTER; the third line is created and the Dimension Input is displayed again.
8. Move the cursor up and then enter 30 in the length input field. Next, press the TAB key and enter 90 in the angle input field. Next, press ENTER; the fourth line is created and the Dimension Input is displayed again.
9. Move the cursor toward the right and then enter 15 in the length input field. Next, press the TAB key and enter 90 in the angle input field. Next, press ENTER; the fifth line is created and the Dimension Input is displayed again.
10. Move the cursor up and then enter 10 in the length input field. Next, press the TAB key and enter 90 in the angle input field. Next, press ENTER; the sixth line is created and the Dimension Input is displayed again.
11. Move the cursor toward the left and then enter 80 in the length input field. Next, press the TAB key and enter 90 in the angle input field. Next, press ENTER; the seventh line is created and the Dimension Input is displayed again.
12. Move the cursor down and then enter 10 in the length input field. Next, press the TAB key and enter 90 in the angle input field. Next, press ENTER; the eighth line is created and the Dimension Input is displayed again.
13. Move the cursor toward the right and then enter 15 in the length input field. Next, press the TAB key and enter 90 in the angle input field. Next, press ENTER; the ninth line is created and the Dimension Input is displayed again.
14. Move the cursor down and then enter 30 in the length input field. Next, press the TAB key and enter 90 in the angle input field. Next, press ENTER; the tenth line is created and the Dimension Input is displayed again.
15. Move the cursor toward the left and then enter 15 in the length input field. Next, press the TAB key and enter 90 in the angle input field. Next, press ENTER; the eleventh line is created and the Dimension Input is displayed again.
15. Move the cursor toward the left and then enter 15 in the length input field. Next, press the TAB key and enter 90 in the angle input field. Next, press ENTER; the eleventh line is created and the Dimension Input is displayed again.
16. Move the cursor down and then enter 10 in the length input field. Next, press the TAB key and enter 90 in the angle input field. Next, press ENTER; the twelfth line is created and the Dimension Input is displayed again.
17. Right-click to display the Marking Menu and choose OK from it to exit the Line tool. The sketch of the outer loop is shown in the image below. You need to arrange the positions of dimensions in the sketch by dragging them to view the sketch clearly.
Next, you need to draw the inner loop. You can draw the loop by using the Two Point Rectangle tool.
Next, you need to draw the inner loop. You can draw the loop by using the Two Point Rectangle tool.
18. Choose the Rectangle Two Point tool from the Sketch > Create > Rectangle/Slot drop-down; you are prompted to specify the first corner of the rectangle.
19. Press the TAB key and then enter -15 and -10 in the Pointer Input. Alternatively, move the cursor and click when the cursor displays -15 and -10 in the Pointer Input. As you click to specify the first corner, you are prompted to specify the opposite corner of the rectangle and the Pointer Input is changed to Dimension Input.
19. Press the TAB key and then enter -15 and -10 in the Pointer Input. Alternatively, move the cursor and click when the cursor displays -15 and -10 in the Pointer Input. As you click to specify the first corner, you are prompted to specify the opposite corner of the rectangle and the Pointer Input is changed to Dimension Input.
20. Move the cursor diagonally upward in the right direction and enter 30 and 20 in the horizontal and vertical input fields of the Dimension Input, respectively, and then press ENTER.
21. Next, right-click on the graphics window; a Marking Menu is displayed. Choose Cancel (ESC) from the Marking Menu; the sketch is created, as shown in the image below.
Note: The angular
dimensions have not been shown for clarity of sketches. You can control
the display of the linear and angular dimensions of the sketch. To do
so, choose Application Options from the Options panel of the Tools tab;
the Application Options dialog box is displayed. In the Sketch tab of
the Application Options dialog box, choose the Settings button; the
Constraint Settings dialog box is displayed. Clear the Create dimensions
from input values check box in the Dimensions area of the Constraint
Settings dialog box and then choose OK. Next, choose the Apply and Close
buttons from the Application Options dialog box to turn off applying
dimensions automatically during sketching.
Saving the Sketch
Next, you need to save the sketch. As mentioned earlier, you cannot save the sketch in the sketching environment. First, you need to exit the Sketching environment and then save it.
Next, you need to save the sketch. As mentioned earlier, you cannot save the sketch in the sketching environment. First, you need to exit the Sketching environment and then save it.
1.Choose the Finish Sketch button from the Exit panel; the Sketching environment is closed and youwill switch to the Home view of the part modeling environment.
2.Choose the Save tool and save the sketch with the name Tutorial2 at the location given below:
C:\Inventor_2016\c02
C:\Inventor_2016\c02
1.Choose Close > Close from the Application Menu to close this file.
Note: The angular dimensions have not been shown for clarity of sketches. You can control the display of the linear and angular dimensions of the sketch. To do so, choose Application Options from the Options panel of the Tools tab; the Application Options dialog box is displayed. In the Sketch tab of the Application Options dialog box, choose the Settings button; the Constraint Settings dialog box is displayed. Clear the Create dimensions from input values check box in the Dimensions area of the Constraint Settings dialog box and then choose OK. Next, choose the Apply and Close buttons from the Application Options dialog box to turn off applying dimensions automatically during sketching.
Note: The angular dimensions have not been shown for clarity of sketches. You can control the display of the linear and angular dimensions of the sketch. To do so, choose Application Options from the Options panel of the Tools tab; the Application Options dialog box is displayed. In the Sketch tab of the Application Options dialog box, choose the Settings button; the Constraint Settings dialog box is displayed. Clear the Create dimensions from input values check box in the Dimensions area of the Constraint Settings dialog box and then choose OK. Next, choose the Apply and Close buttons from the Application Options dialog box to turn off applying dimensions automatically during sketching.