Orthogonal Curvilinear Helical Rack and Pinion Gear
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Description
This is a novel transmission mechanism I designed, the core of which comprises two curvilinear helical racks. Rotating one curvilinear helical rack drives the other in a smooth rotational motion.
Each rack's tooth profile is derived from the involute of a traditional helical gear, guided by a helix with a smooth curvature transition for smoother meshing.
The two racks intersect at a 90° angle, achieving spatial orthogonal transmission; this retains the continuous meshing advantages of helical gears while exhibiting unique structural aesthetics and playability.
Currently, I haven't found any practical applications (as it was developed quite early on); perhaps other publications have already presented papers on this transmission mechanism?
Simple analysis suggests that this curvilinear helical rack is unsuitable for high loads because of the limited contact area between the two teeth, resulting in wear and reduced lifespan (applying grease might help?).
Its current application is limited to learning and educational toys, showcasing its unique transmission method.
The original model file format is SOLIDWORKS 2022 (download the model to observe the design tree's step-by-step development).
If you have any questions or suggestions for applications of this transmission structure, please leave a comment;)
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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