Rubik's cube solving machine

Profile

• What was needed: Lead screw modules for clamping the cube
• Requirements: High reliability for use at trade shows
• Industry: Mechanical engineering 
• Success for the customer: The Rubik's cube can ideally be solved at a speed of 15 moves per second. The underlying solution algorithm requires between 10 and 35 moves. In the best case, the Rubik's cube can therefore be solved in less than a second and can thus compete with professional solutions.

The team consists of Tom Töws, Matthias Risse, Jan Ewerszumrode and Laurids Wetzel

drylin® SHT-12 linear module

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Problem

The main problems of the existing project were the detection of the cube status via image processing, the control of stepper motors to rotate the sides of the cube and a complex manual clamping of the cube. The shortcomings could largely be attributed to a limited budget that the FH could allocate per project. After extensive analysis of the existing machine and the experience gained, the team decided on a complete relaunch of the project. The components needed for a high-quality implementation had to be provided by sponsors due to the budget.
 
After an intensive conceptualisation and design phase, the team was able to gain igus GmbH as a sponsor for linear guides.

Solution

After a three-month implementation phase, the team was able to bring the project to a conclusion on schedule, in parallel with the preparation of their undergraduate theses on their own responsibility.
The drylin® lead screw modules now ensure lubrication-free and also jolt-free clamping of the cube from four sides.
 
On the one hand, the machine meets the requirements of high reliability for use at trade shows, but at the same time it has a high-quality and robust industrial design. The magic cube can ideally be solved at a speed of 15 moves per second. The underlying solution algorithm requires between 10 and 35 moves. In the best case, the Rubik's cube can therefore be solved in less than a second and can thus compete with professional solutions.

The finished Rubik's cube machine

The finished Rubik's cube machine from the front

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Lead screw drive or toothed belt? This is how you find the right linear module.