Strain-Wave Gear Phase Adjustment for Continuous Torque Testing
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Solution Overview
Problem
Existing power transmission systems for gear testing and development are bulky, limited in torque output, and require dangerous manual torque loading, necessitating assembly stops for adjustments.
Innovation Solution
A power transmission assembly utilizing strain-wave gearing with a harmonic drive shaft and elliptical wave generator for continuous and dynamic phase adjustment, allowing infinite rotation without manual resets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing power transmission systems are used for gear testing, then the system can perform basic torque adjustment, but the system is bulky, limited in torque output, and requires dangerous manual torque loading with assembly stops
Solution Approach 1:
The harmonic drive shaft is engaged coaxially within the first shaft, and the harmonic drive components (elliptical wave generator, flexspline, circular spline) are nested within each other in a compact arrangement. This nesting principle allows the high-torque capability mechanism to be contained within a small space, achieving high productivity without increasing system bulkiness
Solution Approach 2:
The patent replaces dangerous manual torque loading mechanisms with an automated harmonic drive system driven by a motor. The elliptical wave generator creates strain waves that automatically produce the required torque through the flexspline and circular spline, eliminating manual intervention and enabling continuous high-speed testing
2Ease of operation
If manual torque loading is used, then torque can be adjusted, but the process is dangerous and requires stopping the assembly
Solution Approach 1:
The harmonic drive system is self-actuating through the elliptical wave generator that automatically creates strain waves in the flexspline, producing torque without manual intervention. The motor-driven system continuously adjusts torque while rotating, making the system safe and eliminating downtime for adjustments
Solution Approach 2:
The harmonic drive enables continuous torque adjustment during rotation without stopping the assembly. The elliptical wave generator continuously generates strain waves as the shaft rotates, maintaining uninterrupted torque application and phase adjustment throughout the testing process
3Force
If traditional gear systems are used, then the structure is simple, but the torque output is limited and phase adjustment is not continuous
Solution Approach 1:
The elliptical wave generator changes the geometric parameters of the wave pattern as it rotates, creating variable strain waves in the flexspline. This parameter change enables continuous variation of the torque output and phase angle without mechanical reconfiguration, achieving high torque with a relatively simple harmonic drive structure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables high-speed, high-torque applications with continuous phase adjustment, enhancing efficiency and safety by allowing torque adjustments while the system is in motion, significantly accelerating gear testing processes.
Implementation Method 1
systems and methods for dynamic and continuous phase adjustment using strain-wave gearing for power transmission shafts
Implementation Method 2
A harmonic drive shaft may be engaged coaxially within the first shaft with a harmonic drive engaged with the harmonic drive shaft
Implementation Method 3
The harmonic drive may include an elliptical wave generator coupled to the harmonic drive shaft, a flexspline engaged with the elliptical wave generator
Data Source
AI summary
Systems and methods that are configured to provide dynamic and continuous phase adjustment using strain-wave gearing for power transmission shafts.