Observation of three-dimensional internal structure of steel materials by means of serial sectioning with ultrasonic elliptical vibration cutting

2010 ◽  
Vol 237 (1) ◽  
pp. 89-95 ◽  
Author(s):  
K. FUJISAKI ◽  
H. YOKOTA ◽  
H. NAKATSUCHI ◽  
Y. YAMAGATA ◽  
T. NISHIKAWA ◽  
...  
Keyword(s):  
Internal Structure ◽  
Three Dimensional ◽  
Serial Sectioning ◽  
Elliptical Vibration Cutting ◽  
Vibration Cutting ◽  
Elliptical Vibration ◽  
Ultrasonic Elliptical Vibration

Study on Feed Offset in Elliptical Vibration Cutting

2014 ◽  
Vol 490-491 ◽  
pp. 600-606
Author(s):  
Jie Qiong Lin ◽  
Jin Guo Han ◽  
Dan Jing ◽  
Xian Jing
Keyword(s):  
Surface Topography ◽  
Surface Quality ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Curved Surface ◽  
Elliptical Vibration Cutting ◽  
Vibration Cutting ◽  
Elliptical Vibration ◽  
Tool Edge

Elliptical vibration cutting (EVC) process and three dimensional cutting surfaces are analyzed in this paper to understand the formation of surface topography. The model of EVC surface topography is established based on curved surface remove function under the assumption that the tool edge is sharp enough. And simulation analysis of surface topography is conducted with different feed offset ratios. Results indicate that RMS change with feed offset ratios λ. The range of RMS is larger when feed offset ratio ranges from both 0 to 0.4 and 0.6 to 1, while the range is smaller when feed offset ratio changes from 0.4 to 0.6. Whats more, RMS reaches the minimum when feed offset ratio is 0.5. The present research provides some references for reducing the height of vibration ripples and improving EVC surface quality.

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.

Mirror Surface Machining of Steel by Elliptical Vibration Cutting with Diamond-Coated Tools Sharpened by Pulse Laser Grinding

2018 ◽  
Vol 12 (4) ◽  
pp. 573-581 ◽  
Author(s):  
Hiroshi Saito ◽  
Hongjin Jung ◽  
Eiji Shamoto ◽  
Shinya Suganuma ◽  
Fumihiro Itoigawa ◽  
...  
Keyword(s):  
Low Cost ◽  
Mirror Surface ◽  
Elliptical Vibration Cutting ◽  
Surface Machining ◽  
Vibration Cutting ◽  
Die Steel ◽  
Elliptical Vibration ◽  
Coated Tools ◽  
Ultrasonic Elliptical Vibration ◽  
Rapid Tool

Low-cost mirror surface machining of die steel is proposed in this research by applying elliptical vibration cutting with diamond-coated tools sharpened by pulse laser grinding (PLG). It is well known that conventional diamond cutting cannot be applied to die steel owing to rapid tool wear. Several attempts have been reported to prevent rapid tool wear, such as using ultrasonic elliptical vibration cutting. The ultrasonic elliptical vibration cutting developed by the authors to achieve mirror surface finish on die steel and prevent rapid wear is widely used in the industry. However, high-cost single-crystalline diamond tools that are finished using a time-consuming lapping process are required to obtain mirror surfaces. The authors, meanwhile, have recently developed the PLG process to efficiently sharpen the cutting edges of hard tool materials such as cubic boron nitride. Therefore, a practical mirror surface machining method for die steel is proposed in this research, namely elliptical vibration cutting with low-cost diamond-coated tools sharpened by the efficient PLG process. The results of the machining experiments confirmed that practical mirror surface machining of die steel can be achieved by the proposed method.

High Frequency Ultrasonic Elliptical Vibration Turning Studty for Weak Rigidity Precision Workpiece

2011 ◽  
Vol 467-469 ◽  
pp. 236-240 ◽  
Author(s):  
Wen Li ◽  
De Yuan Zhang
Keyword(s):  
Surface Roughness ◽  
High Frequency ◽  
Critical Speed ◽  
Machining Efficiency ◽  
Elliptical Vibration Cutting ◽  
Vibration Cutting ◽  
Elliptical Vibration ◽  
Forming Accuracy ◽  
Ultrasonic Elliptical Vibration ◽  
Cutting Direction

Based on analysis of the micro-surface and kinematical formulas of elliptical vibration cutting(EVC), the paper presents that frequency and amplitude of vibration parameter affect surface roughness, forming accuracy and machining efficiency of weak rigidity workpiece: increase vibration frequency are result in lower vibration cutting duty cycle , lower cutting force, advancer critical speed, so advance forming accuracy and machining efficiency; decrease amplitude are result in reduce the height of vibration ripples in cutting direction , so improve surface roughness. Experiences of cutting the weak rigidity workpiece by the designed double bending hybrid vibration high transducer, verified that the high frequency elliptical vibration cutting are proved more conducive to machining weak rigidity workpiece.

A novel three-dimensional elliptical vibration cutting device based on the freedom and constraint topologies theory

2018 ◽  
Vol 233 (3) ◽  
pp. 675-685 ◽  
Author(s):  
Sheng Lin ◽  
Xi Kong ◽  
Chun Wang ◽  
Yun Zhai ◽  
Liang Yang
Keyword(s):  
Design Theory ◽  
Compliant Mechanism ◽  
Three Dimensional ◽  
Cutting Speed ◽  
Elliptical Vibration Cutting ◽  
Vibration Cutting ◽  
Elliptical Vibration ◽  
The Common ◽  
Constraint Topologies ◽  
The Relationship

Aiming at the issue of the lack of the design theory for the three-dimensional elliptical vibration cutting device, a compliant mechanism with two rotations and one translation is synthesized based on the theory of freedom and constraint topologies. And a three-dimensional elliptical vibration cutting device is proposed on the basis of the compliant mechanism. The relationship between the critical speed and the length of the tool bar is analyzed. Simulation is conducted to analyze the influence of parameters on the output ellipse. Experiments are conducted to verify the validity of the elliptical vibration cutting device. The relationship between the roughness and the cutting speed is obtained. Experiments with different driving frequencies are conducted without the change of other parameters. Results show that the proposed compliant mechanism is feasible for the elliptical vibration cutting device. Compared with the common cutting, the new elliptical vibration cutting device has a better performance in the processing effect. This provides an important reference for design of the elliptical vibration cutting device.

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