VinylWorks

CMU Hack-a-Thon Build18

Designed and fabricated custom plinth/housing, tone arm, and cue lever assemblies as well as the motor-platter fixture.

Primary skills: CAD, 3D Printing, lasercutting, DFMA, electrical integration

Housing (Plinth) and Plate (Platter)

Laser cut 1/4" acrylic

Platter lined with felt for grip and vibrational dampening/external noise reduction; plinth rubber feet for same purpose

Cutouts in the housing for electrical interfacing, mounting, etc.

Finger joints for easy assembly and disassembly without needing to permanently secure until completed

Allowed secure testing of electrical components and trouble shooting

3D printed platter mount

tone_arm.mp4

Positive lock so cue lever only raises the arm via the hinge (horizontal axis rotation)

Thrust bearing within the tone arm base mount to allow rotation around the vertical axis.

Custom catridge mount at the end of the arm

Bearings attached to the back of tone arm for weight balancing (common in record players so the cartridge (needle) will not ruin the vinyl)

cue_lever.mp4

Initial prototype

Partial-turn radial lifter mechanism`--Reciprocating Segmental Cam

F7-17 (thrust bearing) and 607 (ball bearing) stack with a buffer plate to assist with radial loading to the motor and smooth platter rotation.

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