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A Novel Fast Servo Tool Device with Double Piezoelectric Driving
Junfeng Liu1, Tiancong Luo2, Kexian Liu1
1Laboratory of Science and Technology on Integrated Logistics Support, College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China.
Micromachines
|January 21, 2023
Summary
This study introduces a novel fast tool servo (FTS) system using piezoelectric ceramics, enhancing precision machining of complex surfaces. The improved FTS device demonstrates superior performance for microstructures and free-form surfaces.
Area of Science:
- Mechanical Engineering
- Materials Science
- Control Systems
Background:
- Fast tool servo (FTS) technology is crucial for machining complex surfaces.
- Existing FTS devices have performance limitations.
- Piezoelectric ceramics offer potential for improved FTS systems.
Purpose of the Study:
- To propose and validate a novel FTS device utilizing piezoelectric ceramics.
- To enhance the performance of FTS systems for precision machining.
- To enable effective processing of microstructures and free-form surfaces.
Main Methods:
- Theoretical verification of a double-drive principle with piezoelectric ceramics.
- Optimization of the FTS mechanism.
- Establishment and identification of a system control hysteresis model.
- Design of a suitable control strategy.
- Experimental testing and microstructure machining using an ultra-precision lathe.
Main Results:
- The novel FTS device, replacing flexure hinges with piezoelectric ceramics, shows improved performance.
- Theoretical feasibility of the double-drive principle was confirmed.
- The developed control strategy effectively managed system hysteresis.
- Successful machining of a typical microstructure demonstrated the device's capability.
Conclusions:
- The proposed FTS device significantly enhances FTS system performance.
- This advancement is beneficial for the precision machining of microstructures and free-form surfaces.
- The novel design offers a viable solution for complex surface processing challenges.
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