HW 7 – Mechanical Bobble-head

 

My original idea was to try to reproduce the motion of the human neck, but what I wound up with more closely resembles a bobble-head, I think.  I used a quick return to create the forward/backward motion, and a modified rack and pinion to achieve the lateral motion (modified because the rack is actually a semicircle fixed on a pivot.  This causes the arm to arc from side to side rather than sliding from side to side).

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