Скачать или смотреть How a Schmidt Coupling Works The Mechanism for Variable Parallel Misalignment

This technical animation explores the working principle of the Schmidt Coupling, a crucial mechanism in power transmission designed for shafts with large, often variable, parallel (radial) misalignment.
The Schmidt Coupling is renowned for its ability to transmit constant torque and constant angular velocity (constant velocity) even when the radial distance between the input and output shafts changes dynamically during operation.
Core Structure:
The mechanism consists of three discs interconnected in series by two sets of links. The connection points on each disc are typically spaced at 120∘. Crucially, the middle disc has no fixed center of rotation, allowing it to "float."
💡 Working Principle Explained:
1. Radial Compensation: The central, or floating, disc constantly adjusts its position, enabling the distance between the input and output shafts to vary significantly.
2. Constant Velocity: The precise geometry of the links ensures that the output shaft's rotational speed is identical to the input shaft's speed at all times (a $1:1$ ratio). This eliminates speed oscillations and phase shift.
3. Zero Restoring Forces: The linkage arrangement is designed to cancel out the lateral (radial) forces that would typically be exerted on the bearings by the misalignment, thereby extending the system's lifespan.
🔧 Key Applications:
• Printing and converting machinery where roller diameters and spacings change (e.g., tensioning systems).
• CNC machine tools and high-precision robotics.
• Systems requiring dynamic adjustment of shaft center distance while running under load.
🎓 Ideal for students and engineers studying Kinematics, Shaft Couplings, Power Transmission, and Mechanism Design.

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