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Related Concept Videos

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Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically...
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Enhancing Robotic-Based Propeller Blade Sharpening Efficiency with a Laser-Vision Sensor and a Force Compliance

Yong-Sheng Cheng1, Syed Humayoon Shah1, Shih-Hsiang Yen1

  • 1Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.

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Summary

This study introduces an automated robotic system for sharpening propeller blade edges, enhancing energy efficiency. The intelligent system uses laser vision and iterative grinding for precise, reliable results.

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Area of Science:

  • Manufacturing Engineering
  • Robotics
  • Aerospace Engineering

Background:

  • Propeller blade edge sharpness is critical for energy transmission efficiency and reduced propulsion power.
  • Casting methods face challenges with edge breakage and wax model deformation, hindering precise edge thickness.
  • Existing robotic grinding methods have limitations in achieving fine edge sharpness.

Purpose of the Study:

  • To develop an automated intelligent system for precise propeller blade edge sharpening.
  • To overcome limitations in traditional manufacturing and previous robotic approaches.
  • To improve the accuracy and efficiency of propeller blade edge machining.

Main Methods:

  • An intelligent system integrating a six-DoF industrial robot and a laser-vision sensor was developed.
  • An iterative grinding compensation strategy utilizing vision sensor profile data was implemented.
  • A custom-designed compliance mechanism with active force control was employed for robotic grinding.

Main Results:

  • The system achieved accurate and efficient machining of propeller blade edges within specified thickness tolerances.
  • Validation was performed on three different four-blade propeller models.
  • The iterative grinding compensation and compliance mechanism enhanced machining accuracy and performance.

Conclusions:

  • The proposed intelligent robotic system offers a reliable solution for achieving finely sharpened propeller blade edges.
  • This automation addresses key challenges in manufacturing critical propeller components.
  • The system demonstrates significant improvements over previous robotic grinding studies for propeller blades.