13. Choose the Reverse Direction button available on the left of the End Condition drop-down in the Direction 1 rollout of the PropertyManager.
The Reverse Direction button is used to reverse the direction of extrusion.
14. Select the Up To Next option from the End Condition drop-down in the Direction 1 rollout of the PropertyManager; the preview of the extrude feature is terminated at the next intersection.
The Up To Next option is used to extrude the sketch from the sketching plane to the next surface that intersects the feature. contour selection method to create the seventh and eighth features. Also, the sketch used for these features is created by using a reference plane, created at the middle of the planar faces of the fourth feature.
1. Choose the Plane button from the Reference Geometry flyout in the Features CommandManager;
the Plane PropertyManager is displayed.
2. Select both the planar faces of the fourth feature one by one as the first and second references, respectively, refer to Figure 6-21. Note that as soon as you select the planar faces, the Mid Plane button is chosen automatically in the PropertyManager. Also, the preview of the reference plane is displayed in the middle of the selected planar faces, refer to Figure 6-21.
3. Choose the OK button from the PropertyManager; the reference plane is created in the middle of the selected planar faces.
Now, you will create a sketch for the seventh and eight features by selecting the newly created plane as the sketching plane.
4. Invoke the sketching environment by selecting the newly created reference plane as the sketching plane.
Next, change the orientation of the model normal to the view by using the Normal To button from the View Orientation flyout.
5. Draw a sketch with multiple contours and then apply the required relations and dimensions to it, refer to Figure 6-22. Do not exit the sketcher environment.
Figure 6-21 The planar faces selected for creating reference plane
Figure 6-22 Sketch with multiple contours
Next, you need to use the contour selection method to create the seventh and eighth features.
6. Choose the Extruded Boss/Base tool from the Features CommandManager; the Boss-Extrude PropertyManager is displayed on the left of the drawing area. Since the sketch consists of multiple close contours, the Selected Contours rollout of the Boss-Extrude PropertyManager is invoked automatically and you are prompted to select a close or open contour. Also, the cursor is replaced by the contour selection cursor.
7. Change the current orientation of the model to isometric by choosing the Isometric button from the View Orientation flyout.
8. Move the contour selection cursor toward the close contour of the sketch and select it when it is highlighted, refer to Figure 6-23; the preview of the feature is displayed in the drawing area. Also, the name of the selected contour is displayed in the selection box of the Selected Contours rollout of the PropertyManager.
9. Select the Mid Plane option from the End Condition drop-down list of the Direction 1 rollout of the PropertyManager.
10. Set the value of the Depth spinner to 42 and then choose the OK button from the PropertyManager; the selected contour is extruded. Next, click anywhere in the drawing area to exit selection, if any. Figure 6-24 shows the model after creating the seventh feature.
Figure 6-23 Sketch with multiple contours
Figure 6-24 The model after creating the seventh feature
Now, you will create eighth feature of the model by using the same sketch that was used for creating the seventh extrude feature.
11. Click on the + sign available on the left side of the previously created extrude feature (Boss-Extrude6) from the FeatureManager Design Tree; the node expands and the sketch of the feature is displayed.
12. Select the sketch of the seventh feature from the FeatureManager Design Tree.
13. Choose the Extruded Boss/Base tool from the Features CommandManager; the Boss-Extrude PropertyManager is displayed with the Selection Contours rollout invoked in it.
14. Move the cursor toward the closed contour of the sketch formed by two circles of diameter 15 and 36, then click and select it when it is highlighted, refer to Figure 6-25. The preview of the feature is displayed in the drawing area. Also, the name of the selected contour is displayed in the selection box of the Selected Contours rollout of the PropertyManager.
15. Select the Mid Plane option from the End Condition drop-down list of the Direction 1 rollout of the PropertyManager.
16. Set the value of the Depth spinner to 48 and then choose the OK button from the PropertyManager; the selected contour is extruded. Next, click anywhere in the drawing area to exit the selection, if any.
17. Hide the reference plane in the drawing area. Figure 6-26 shows the final model after all features are created.
Figure 6-25 Model after creating the third extrude feature by using the contour selection method
Figure 6-26 Final model
Saving the Model
1. Choose the Save button from the Menu Bar and save the model with the name c06_tut01 at the location given below:
\Documents\SOLIDWORKS Tutorials\c06\
2. Choose File > Close from the SOLIDWORKS menus to close the document.
Tutorial 2
In this tutorial, you will create the model shown in Figure 6-27. You will use a combination of both the conventional modeling method and the contour selection method to create this model. The dimensions of the model are given in Figure 6-28. (Expected time: 30 min)
Figure 6-27 Model for Tutorial 2