Crayon CAD - Differential Gearbox

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I designed the differential gear box mechanism in CAD today, I didn’t have tons of time to work on it, but I got the general dimensions figured out.
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It will operate as a differential gearbox for the rotation and the pitch of the main tool-head. I used gearlabs to generate the bevel gears.
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I also worked on some designs for the tool head system, and am considering weather or not a tool changer is necessary
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