Design of an ultrasonic elliptical vibration device with two stationary points for ultra-precision cutting

Ultrasonics ◽  
2021 ◽  
pp. 106662
Author(s):  
Wei Bai ◽  
Kai Wang ◽  
Dongxing Du ◽  
Jianguo Zhang ◽  
Wen Huang ◽  
...  
Keyword(s):  
Stationary Points ◽  
Elliptical Vibration ◽  
Ultra Precision ◽  
Ultrasonic Elliptical Vibration

Diamond Tool Wear Reduction by Combining Ultrasonic Elliptical Vibration with Graphite Particle Atmosphere

2014 ◽  
Vol 1027 ◽  
pp. 32-35 ◽  
Author(s):  
Xing Gao ◽  
Chao Jiang Li ◽  
Yong Li ◽  
Cam Vinh Duong
Keyword(s):  
Tool Wear ◽  
Graphite Particle ◽  
Diamond Tool ◽  
Combined Method ◽  
Die Steel ◽  
Elliptical Vibration ◽  
Ultra Precision ◽  
Vibration Mechanism ◽  
Wear Reduction ◽  
Ultrasonic Elliptical Vibration

For reducing diamond tool wear in ultra-precision cutting of ferrous metals, a process of combining ultrasonic elliptical vibration with graphite particle atmosphere was put forward. An experimental setup was built integrating an ultrasonic elliptical vibration mechanism with a jet lubrication device on a 4-axis ultra-precision lathe. The frequency of ultrasonic elliptical vibration is 38.36 kHz with a trajectory of 8.5×3.5μm. Graphite particles with sizes of 1.3~2μm were selected. Conventional cutting and the combined method were conducted on die steel. Compared with conventional cutting with a wear land width of about 300μm, diamond tool wear in the combined method was decreased to about 20 to 30μm. The combined method is feasible to further reduce the diamond tool wear when cutting die steel.

Ultrasonic Elliptical Vibration Turning Studty for Precision and Ultra-Precision Workpiece

2011 ◽  
Vol 189-193 ◽  
pp. 3-8
Author(s):  
Wen Li ◽  
Lin Song Yan ◽  
De Yuan Zhang
Keyword(s):  
Surface Roughness ◽  
High Frequency ◽  
Small Amplitude ◽  
Precision Machining ◽  
Machining Efficiency ◽  
Elliptical Vibration Cutting ◽  
Vibration Cutting ◽  
Elliptical Vibration ◽  
Ultra Precision ◽  
Ultrasonic Elliptical Vibration

Based on ultrasonic elliptical vibration cutting (UEVC) model, kinematical formulas of elliptical vibration cutting(EVC) is established, the paper presented relationship of vibration parameters effecting on surface roughness, machining accuracy and machining efficiency, revealed UEVC characteristics of high frequency and small amplitude are more conducive to improve surface roughness, advance EVC machining efficiency. Experiences of cutting the weak rigidity workpiece by the designed adjusting frequency elliptical transducer is proved that compared conventional turning, increasing vibration frequency and decreasing amplitude are result in improve surface roughness, and compared low frequency EVC, decrease amplitude are result in reduce the height of vibration ripples in cutting direction, and advance machining efficiency. So high frequency and small amplitude EVC is more conducive to precision machining and ultra-precision machining.

A Bi-Directional Ultrasonic Elliptical Vibration Actuator (BUEVA) for Micro Machining

2009 ◽  
Author(s):  
Ali H. Ammouri ◽  
Ramsey F. Hamade
Keyword(s):  
Tool Path ◽  
Cutting Parameters ◽  
Micro Machining ◽  
Tool Positioning ◽  
Elliptical Vibration ◽  
Machining Center ◽  
Precise Tool ◽  
Multilayer Actuator ◽  
Tool Motion ◽  
Ultrasonic Elliptical Vibration

Presented is the detailed design and implementation of a bi-directional ultrasonic elliptical vibration actuator (BUEVA) for micro machining. Removal of material occurs via a generated elliptical tool motion resembling a natural ‘spoon feeding’ action in contrast to in-plane, horizontal motion utilized by most existing setups. The motion is generated by two stacked ceramic multilayer actuator ring (SCMAR) piezo elements vibrating out of phase in the tool’s axial and transverse directions. The amplitude of vibration of the tool is controlled in order to vary the cutting depth according to the desired cutting parameters. To ensure precise tool positioning, the BUEVA actuator is fitted to a 3-axis precision machining center that provides the necessary tool path. The cutting forces and the resulting surface finish are both numerically modeled and then experimentally measured by a 3-axis mini dynamometer and a surface profilometer, respectively. Preliminary cutting results show good dimensional definition and surface integrity.

Development and optimization of ultrasonic elliptical vibration cutting device based on single excitation

2021 ◽  
pp. 1-29
Author(s):  
Sen Yin ◽  
Zhigang Dong ◽  
Yan Bao ◽  
Renke Kang ◽  
Wenhao Du ◽  
...  
Keyword(s):  
Cutting Speed ◽  
Tungsten Alloy ◽  
Asymmetric Structure ◽  
Diamond Cutting ◽  
Elliptical Vibration Cutting ◽  
Vibration Cutting ◽  
Elliptical Vibration ◽  
Technical Capability ◽  
Diamond Cutting Tool ◽  
Ultrasonic Elliptical Vibration

Abstract Ultrasonic elliptical vibration cutting (UEVC) technique, as an advanced cutting method, has been successfully applied to machine difficult-to-cut materials for the last decade. In this study, the mechanism of the elliptical vibration locus caused by the “asymmetric structure” of the horn was analyzed theoretically firstly, and the corresponding relationship between the degree of asymmetry and the elliptical vibration locus was determined based on finite element method (FEM). Then an efficient single-excitation UEVC device with “asymmetric structure” was developed and optimized. The resonant frequency of the device was 40.8 kHz, and the amplitude reached 12.4 µm, which effectively broke the limitation of cutting speed in UEVC. Finally, the UEVC device's performance was tested, and the advantages in improving the tungsten alloy surface quality and reducing diamond cutting tool wear validated the technical capability and principle of the proposed device.

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