Report on Designing a Mold for a Table Fan Base in SolidWorks

1. Introduction

The objective of this report is to document the process of designing a mold for a table fan base using SolidWorks. The design includes considerations for manufacturability, accuracy, and ease of use.

2. Initial Setup

1. Software Preparation: Ensure that SolidWorks is properly installed and configured.
   
2. Model Import: Import the provided table fan base model into SolidWorks.
   

3. Analyzing the Model

1. Inspect Geometry: Carefully examine the geometry of the table fan base to identify critical features and potential issues.
2. Determine Parting Line: Decide on the most suitable parting line for the mold. This is crucial for ensuring proper mold release and minimizing defects.
   

4. Creating the Mold

1. Scaling the model:
   - Scale the model according to the shrinkage value of the plastic material.
   - In this case it is given the material type is "ABS".
   - The shrinkage value for this is 0.6%.
   
   
   
2. Define the Parting Line:
   - Open the part file in SolidWorks.
   - Use the `Draft Analysis` tool to determine draft angles and find the optimal parting line.
   - Create the parting line by selecting `Insert > Mold Tools > Parting Line`.
   
   
   
3. Defining the Shut-off surface:
   - Define the shut-off surface for the openings.
   - In this case the shut-off surface is shown below image.
   
   
   
4. Create the Parting Surfaces:
   - Generate parting surfaces using `Insert > Mold Tools > Parting Surfaces`.
   - Ensure the surfaces completely enclose the parting line.
   
   
   
5. Core and Cavity Creation:
   - Use the `Tooling Split` command to separate the model into core and cavity.
   - Access this via `Insert > Mold Tools > Tooling Split`.
   - Define the direction of pull and confirm the core and cavity are properly divided.
   
   
   
   
   
   
   
6. Generate the Mold Base:
   - Choose an appropriate mold base from the SolidWorks Mold Base Library.
   - Customize the mold base dimensions to fit the table fan base model.
   
   
   

5. Finalizing the Mold Design

1. Add Sliders:
   - Add the sliders where undercuts are present.
   - Create the sketch where the slider needed to be placed.
   - Split the part from the mold.
   - Save the slider separately (as a new file).
   - Repeat the same process for other undercuts, wherever needed.
   
   
   
   
   
   
   
   
2. Add Ejector Pins:
   - Insert ejector pins where necessary to ensure the part can be ejected from the mold without damage.
   - Use `Insert > Mold Tools > Ejector Pin`.
3. Cooling Channels:
   - Design cooling channels to ensure the mold can be cooled effectively during the injection process.
   - Access this via `Insert > Mold Tools > Cooling Channel`.
4. Create Runner System:
   - Design the runner system to allow molten material to flow into the mold cavity.
   - Utilize `Insert > Mold Tools > Runner`.

6. Simulation and Validation

1. Mold Flow Simulation:
   - Run a mold flow simulation to identify potential issues with the injection process.
   - Use `SolidWorks Plastics` to perform the simulation.
2. Validate Draft Angles:
   - Ensure all surfaces have appropriate draft angles to facilitate mold release.

7. Conclusion

This report details the step-by-step process of designing a mold for a table fan base in SolidWorks. By following these steps, a functional and manufacturable mold can be created, ensuring efficient production and high-quality parts.