Performance-Degradation Analysis of the Planetary Roller Screw Mechanism under Multi-Factor Coupling Effects.

Area of Science:

• Mechanical Engineering
• Tribology
• Machine Condition Monitoring

Background:

• Planetary roller screw mechanisms (PRSMs) are critical components in various applications.
• Predicting and evaluating PRSM performance degradation is challenging due to complex influencing factors.
• Key performance indicators include load-carrying capacity, transmission accuracy, and efficiency.

Purpose of the Study:

• To design and develop a comprehensive testing device for PRSM performance evaluation.
• To investigate the coupled effects of temperature, vibration, speed, and load on PRSM degradation.
• To establish a foundation for real-time monitoring and assessment of PRSM performance changes.

Main Methods:

• Designed a testing device incorporating functional design and error calibration.
• Conducted degradation tests on load-bearing capacity and transmission accuracy of a PRSM.
• Analyzed transmission efficiency changes under various operational conditions.
• Utilized universal tool and optical microscopes for thread profile and wear inspection.
• Collected real-time vibration data using the testing device's monitoring module.

Main Results:

• The testing device successfully integrated temperature, vibration, speed, and load monitoring.
• Degradation tests revealed changes in load-bearing capacity and transmission accuracy.
• Transmission efficiency was analyzed in relation to operational parameters.
• Thread profile and wear conditions were quantitatively assessed.
• Real-time vibration data provided insights into the PRSM's operational status.

Conclusions:

• The developed testing device effectively captures the coupled effects influencing PRSM performance degradation.
• The study elucidates the degradation patterns of PRSMs under combined environmental and operational stresses.
• This research provides a basis for predictive maintenance and performance optimization of PRSMs.