How to Make a Hollow Sphere in SolidWorks ?

Understanding Hollow Sphere Creation in SolidWorks

To make a hollow sphere in SolidWorks, a systematic approach can be utilized. This method combines both solid modeling techniques and the utilization of the shell feature to achieve the desired outcome. Follow these detailed steps:

Step-by-Step Guide to Creating a Hollow Sphere

Step 1: Create a Sphere

1. Open SolidWorks: Start by launching the SolidWorks application.
2. Start a New Part: Create a new part file by selecting File > New and then choosing Part.

3. Create a Sphere:

   • Navigate to the Features tab.
   • Locate the Revolve feature. To create a sphere, you will need a semi-circle.
   • Switch to the Sketch mode by selecting the Sketch tool. Choose a suitable plane (e.g., the top plane) to begin sketching.
   • Draw a vertical line representing the radius and use the Arc tool to create a half-circle from the top of the vertical line back to the origin. Ensure the arc is fully defined.
   • Exit the sketch mode.
4. Revolve the Sketch:
   • Select the Revolve Boss/Base feature.
   • Click on the sketch you just created and specify the axis of revolution (the vertical line).
   • Set the angle of revolution to 360 degrees to form a complete sphere.

Step 2: Shell the Sphere

1. Access the Shell Feature:

   • With the newly created solid sphere still selected, navigate to the Features tab.
   • Choose the Shell command from the features toolbar. This feature allows you to create a hollow model from a solid.

2. Set Shell Parameters:

   • In the Shell PropertyManager, you’ll see an option to select a face. Click on the surface of the sphere to select it.
   • Enter the desired thickness for the hollow shell. This value will determine how thick the walls of the sphere will be.
3. Complete the Shell Operation:
   • Ensure that the Remove Face option is enabled; this will create a hollow sphere with an open surface.
   • Click the green check mark (✔) to apply the shell operation.

Step 3: Final Adjustments and Inspection

1. Inspect the Geometry:

   • Rotate the sphere in the 3D workspace to check for any irregularities and confirm that it is hollow.
   • Use the Measure Tool to verify the internal and external dimensions if necessary.
2. Refine the Model:
   • If adjustments are needed, you can use the Features management tree to edit the parameters of the shell or revert to the solid model as needed.

Frequently Asked Questions

1. What types of objects can be shelled in SolidWorks?

• SolidWorks allows you to shell a variety of shapes provided the surfaces can be offset without intersecting or creating non-manifold edges. However, complex geometries with features like ribs or undercuts may prevent successful shelling.

2. Can I add additional features to a hollow sphere after shelling?

• Yes, after creating a hollow sphere, you can continue to add features such as holes, cuts, or decorative elements. Just ensure the added features do not alter the integrity of the hollow structure you created.

3. How can I troubleshoot issues while shelling?

• If shelling fails, SolidWorks displays error diagnostics in the Feature Manager. Ensure that the shell thickness is acceptable and recheck the selection of faces for any problematic areas before re-attempting the operation.