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A Novel Well Drill Assisted with High-Frequency Vibration Using the Bending Mode
Xinda Qi1, Weishan Chen2, Yingxiang Liu3
1State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China. 7120810204@hit.edu.cn.
Sensors (Basel, Switzerland)
|April 12, 2018
Summary
This study introduces a novel vibration-assisted well drill that enhances drilling efficiency by 52% and improves borehole surface smoothness. The piezoelectric transducer creates elliptical vibrations for more effective material penetration and debris removal.
Area of Science:
- Mechanical Engineering
- Materials Science
- Drilling Technology
Background:
- Increasing drilling efficiency and tool longevity is crucial for industrial operations.
- Previous research suggests vibration superposition enhances well drilling performance.
Purpose of the Study:
- To introduce a novel well drill utilizing piezoelectric sandwich bending vibration transducers.
- To investigate the impact of dual-direction bending vibrations on drilling efficiency and borehole quality.
Main Methods:
- Design and fabrication of a vibration-assisted well drill with a piezoelectric transducer.
- Analysis of motion equations and finite element method (FEM) for vibration trajectory.
- Experimental testing to compare vibration-assisted drilling with conventional drilling.
Main Results:
- The vibration-assisted drill achieved a feed speed of 0.296 mm/s at 300 V excitation, a 52% increase compared to 0.195 mm/s without vibration.
- The drill operates at a resonance frequency of approximately 1779 Hz for its first bending mode.
- Vibration-assisted drilling resulted in a smoother borehole surface compared to conventional methods.
Conclusions:
- Superimposing vibrations significantly increases well drilling efficiency and feed speed.
- The novel piezoelectric vibration-assisted drill offers improved performance and borehole quality.
- Vibration-assisted drilling is a promising approach for enhancing well drilling operations.
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