For the final presentation in my first Mechanical Design class with Dr. Gregory Sawyer, my team was tasked with producing a design for a small electric coffee grinder.

These popular personal coffee grinders can use a variety of grinding mechanisms to control particle size and grinding speed.

 The design had to meet the following criteria:

1) Store 1/2 lb of Coffee Beans.

2) Store up to 1/4 lb of Ground Coffee.

3) Use Standard US AC Wall Voltage and <10 Amps of Current.

4) Adjustable Features (your choice, examples: grind fineness, time, volume, etc..)

5) Parts must be developed in CAD but do not require complete dimensioning.

6) All basic information regarding mass, height, width etc.. must be computed from CAD models, but no FEA is required for stress analysis.

7) Materials selection needs to be defended but painting and coatings of parts are not required to be selected at this time.  Emphasis on safety, cost, and performance for critical components should be highlighted.

8) Pass Fatigue and Failure Analysis.

A sample of our final report as well as some renderings of the design can be found below.