Lab 5: Prototyping in SolidWorks

Download this lab’s code here.

The first part of the class tutorials walks you though how to design parts and export drawings for laser cutting. The second part focuses on the more advanced techniques and assembly. You can find materials provided in the class in the lab code folder. Please, note that it is not a starter code for the assignment.

Step 1: Drawing for laser cutting

Once the individual parts are designed, generating an illustrator drawing is very straight forward.

Step 2: Features & Assembly Modeling

For this part of the tutorial, some design features (extrude, loft, fillet, shell, libraries, …) are introduced. Some examples are included in the lab code. Feel free to explore the rest of the features (sweep, chamfer, …).

Djembe shows a couple of examples from Solidworks features.

  • Let's start with "Loft" to create the curved body of the instrument. To be able to use this feature, firts create a reference plane from "Insert → Reference Geometry → Plane." It should be parallel to the top surface.
  • Draw one circle concentric to each other in each plane. Don't forget to select the dimensions appropriately (small circle at the bottom plane, large circle on the top). Select loft feature from the "Features" menu. Select the sketches on each plane as profiles (appears on the left panel).
  • Use the "Shell" feature to create the inner cavity.
  • Repeat the same for the lower shell. This time, instead of loft, use "Curved Loft" by adding a refernece geometry perpendicular to the top and bottom planes. Feel free to hide the plane for simplicity.
  • Create an arc between two nodes of top and bottom circles. Repeat the same for the other side.
  • Select the "Lofted Boss/Base" from "Features". Select the top and bottom profiles. Once you see two sketches appear in the left profiles window, select the "Guide Curves" window to select the loft curves. Add the arc sketches to this window and select the guide curve type accordingly. Practice these options to see which fits better to the rigth shape.
  • Draw the membrane to fit the outside radius of the instrument body and save all parts individually
  • Create a new assembly and define the relationship of all the parts (concentric,coincident,tangent, perpendicular,... ) and mate them to fixture.
  • Now, you may shoot nice images such as exploded view, 2D drawings, etc. Your assembled instrument should look like or better than this:

  • Assignment (Due on Feb. 12, 2020)