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Updated: May 31, 2025
05:23
Application of Design Aspects in Uniaxial Loading Machine Development
Published on: September 19, 2018
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A novel design for double-bending elliptical vibration boring device and its performance evaluation
Yunxiang Zheng1, Cheng Hu1, Mao Wang1
1State Key Laboratory of Intelligent Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China.
Ultrasonics
|January 23, 2025
Summary
Ultrasonic elliptical vibration boring (UEVB) enhances steel machining by reducing surface roughness by 72% and improving hole roundness to 0.473 μm. This novel method enables ultra-precision diamond cutting of steel, crucial for aerospace and automotive industries.
Area of Science:
- Materials Science
- Mechanical Engineering
- Manufacturing Technology
Background:
- Precision matching parts in aerospace and automotive sectors demand nano-surface roughness and submicron-shape accuracy.
- Traditional diamond cutting faces challenges with steel due to active chemical reactions, limiting its application.
- Ultrasonic elliptical vibration cutting offers a solution by reducing cutting heat and mitigating tool wear.
Purpose of the Study:
- To propose a novel, simple theory-simulation design method for an ultrasonic elliptical vibration boring (UEVB) device.
- To investigate the effectiveness of UEVB in ultra-precision machining of steel.
- To validate the performance of the UEVB device through experimental testing and comparison with conventional methods.
Main Methods:
- Development of a UEVB device utilizing two six-order bending vibration modes for elliptical tool motion.
- Theoretical design and simulation of the UEVB device.
- Experimental validation including impedance, frequency sweep, and amplitude tests, followed by cutting trials on S136 steel.
Main Results:
- Simulation results closely matched experimental impedance, frequency sweep, and amplitude test outcomes.
- UEVB technology suppressed system chatter by 10% and reduced surface roughness (Ra) by 72% compared to common boring.
- Achieved a machined surface roughness of Ra 11.3 nm and a hole roundness of 0.473 μm for a 30 mm diameter hole, surpassing the G1 standard.
Conclusions:
- The developed UEVB device and design method are feasible for ultra-precision machining of steel.
- UEVB effectively suppresses chatter, significantly reduces surface roughness, and enhances dimensional accuracy.
- This technology enables diamond tools for high-precision steel component manufacturing in demanding industries.
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