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2026. 6. 30. 작업

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How to calculate the angular velocity ratio of a cardan shaft?

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I'm not convinced it's as simple as that formula. I think you've got three solid bodies involved in the conversation. If it were me, I'd design the system in SolidWorks, then put the pieces together with centerlines and contact surfaces mating. Part of the issue here is ID/OD and axial clearance / slop. Its not much in real life, but enough to be a factor in input vs output curve, particularly when non-zero torque loads are involved. I'd spin the input shaft 2.5 degrees of arc, and measure the output rotation. Add 2.5 more degrees of twist and measure output again. Repeat so you have a complete map (I would think 90 degrees of arc total should suffice...) I doubt the input to output is a pure linear relationship. Or you could do it with 3D angular relationships, and a really good appreciation for Descriptive Geometry. Although two of the parts involved are the same design, you've still got to manage three bodies in the analysis. How good are you at calculating steradians? Me, not so mu