• Box

    luis.ramirez-ramirez • 6 days ago • 0 comments

  • 08/04/2025

    luis.ramirez-ramirez • 04/08/2025 at 10:19 • 0 comments

    Box will be made out of wood, prototype of carton 

    finalisation of lazer cut for the box and platform

  • Mechanical constraints

    louis.duprey • 03/18/2025 at 09:32 • 0 comments

    While the cylinder itself will be exposed to very little stress, the gearing will face considerably more

    Due to expected stresses exerted upon the driving gear and those dedicated to the governor, it would seem they will need to be metallic or otherwise sturdier than a simple 3D printing

    For that reason, we will need to look at using standardized parts in order to simplify the building process

  • Governor related analysis

    louis.duprey • 03/18/2025 at 08:53 • 0 comments

    The purpose of the governor in the system is to ensure a stable speed of the cylinder

    It accomplishes this goal by increasing its rotational inertia the faster the device is turning

    It does so by having a pair of mobile counterweight that get higher and further from the axle as the rotation speed increase

    We will be using a version of the mechanism called the Watt Governor

    This version is fully passive, with no tuning component beyond the mass of the counterweights

    For our purpose, the ideal situation would be a rotation speed between 150 and 200 rpm with counterweight somewhere between 15 and 20 grams per counterweight

    The user is deemed to spin the handle between 60 and 120 rpm

    With the current gear shaft, this means the driving gear will go from 12 to 24 rpm

    In order to reach our operating rotational speed, we need to have a gear ratio in the neighborhood of 15 between the driving gear and the governor.

  • 11/03/24 : Progress log

    louis.duprey • 03/11/2025 at 11:13 • 0 comments

    Speed regulation of the system will be done using a governor.

    Found what kind of governor to use (Watt governor, fully gravity driven)

    Started to look at requirements for manufacturing

    Fine tuning will be done once prototype is assembled

    started model of worm gear and handle.

  • 04/03/2025

    luis.ramirez-ramirez • 03/04/2025 at 09:47 • 0 comments

    • Recived the kalimba. We worked with fusion 360°to upload the kalimba into the program then we measured the, angles, and size of the cylinder to fit the kalimba and the tines(notes). 

  • 25/02 Progress log

    louis.duprey • 03/04/2025 at 09:35 • 0 comments

    Decision upon the actual project : making a music box

    Research of requirements for said project

    Identification of 4 main requirements for it : resonance chamber, metal prongs, cylinder, rotation mechanism

    The first two requirements are solved by using a kalimba as a base.

    Working on the other two