Access Systems & Circuits
Parametric Non-Circular Planetary Gear Generator
This internal project was inspired by this classic demonstration video: https://youtu.be/y2vRkXoTWqc
These gear systems have unique motion properties and exhibit a mechanical analog of the "uncanny valley" with their cognitively dissonant motion and unique geometries.
"Carving" the involute sun-gear teeth along the pitch curve.
Gear System Program Inputs and Output
Design Inputs:
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Arbitrary sun gear pitch curve, lobe and tooth count. (Sun gear is currently constrained to be radially symmetric with an integer lobe/tooth-count ratio)
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Circular planet gear radius and tooth count.
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Sun/Planet orbit ratio.
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Gear tooth profile; Involute, circular, arbitrary or null (pitch curve only)
Design Output:
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2D gear profiles for sun, ring and planet gears in DXF-format.
Gear System Program Example Run
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Sun gear form& tooth count: Rs = 4 + 4*cos(3*theta), 72-tooth.
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Planet gear radius & tooth count: 1, 12-tooth.
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Gear tooth profile: Circular.
3:4:7 System: Combined DXF Profiles (left), Pitch Curves Animation (right)
3:5:8 Gear System Prototype
Demonstration Model of 3:5:8 Involute System. Laser cut in acrylic and MDF
Contact Access Systems & Circuits and learn how we can help.
Discussion of your goals and needs is complimentary.