Designing an ice-cream scoop

Project Info

Case:

Ice-cream Scoop Design

The client asked for a creative design of an ice-cream scoop so that only one hand of the user is involved in taking the ice-cream.
The mechanical design was done in four stages and four different mechanisms were provided, the final design was a combination of the pros of each design. Once the mechanism was designed, the final stage of the project was to verify all elements of the ice-cream scoop in terms of mechanical properties and a smooth and flawless functionality. Ultimately, a simulation and FEA analysis were provided.

Challenges:

  • Changing the existing model of the handle.
  • Providing a mechanism restricted in a small area of the barrel.
  • A mechanism to work with a low force applied by the fingers of the user.
  • Determination of the lever design, the rivet location, and the clearance of the mechanical wing.
  • A user-friendly and ergonomic design.

Design Assumptions

  1. The external forces were considered as widespread forces
  2. They were supposed to be applied on the external surface of the typical ice-cream scoop
  3. For instance, the forces applied by the amount of ice-cream on the barrel while pushing in the substance or pulling up.
  4. Further details, illustrations, tables, and calculations are provided in the analytical report of the FEA test.

Work done:

The main product analyzed in this project is a set of Ice- Cream Scoop. All elements were designed and modeled in Solidworks interface, so as to embed all components of an ice-cream scoop inside the housing, including the Wings, Handle, Pushing and Pulling Arms, lever, Internal pins, Fixtures and the Plunger System (to let the ice cream inside the barrel and to push it out upon necessity.)
The entire product was designed and 3D modeled in Solidworks to set the ground for analyzing the mechanical properties and characteristics of the main structure, under pressures and external forces.

Description

Results:
In the process of analysis, a 30 N force was applied on the wing, which is the most vulnerable part; such a force is much higher (3–5 times more) than the usual applied pressures on the structure by the fingertips.
Based on the FEA analysis, and in accordance with the previous tables as well as the color spectrum diagrams, the ice-cream scoop piece was resistant and stable, The diagrams show the least critical points colored in red. The red colored points that bear the highest tensile stress or strain, are basically in the midst of the components and are concentrated at the base of the rings. Based on the Von Mises diagrams the maximum deflection of the beam i.e. displacement of the wing meshes, is 0.052088 mm, which is experienced on Node: 1315.
As mentioned above, the force applied is 3-5 times higher than the usual condition, whereas the ice-cream scoop structure shows an appropriate bearing condition.
Considering a safety factor more than 3-5, and regarding the study results and the illustrated diagrams, the set of ice-cream scoop is a viable product, guaranteed to work properly.

Client:
Kevin N.
Date:
November 5, 2017
Location:
UK _ London
Category:
Mechanical Engineering