ULTRASONIC ELLIPTICAL VIBRATION CUTTING

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

International Journal of Automation Technology ◽

10.20965/ijat.2018.p0573 ◽

2018 ◽

Vol 12 (4) ◽

pp. 573-581 ◽

Cited By ~ 1

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.

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Ultraprecision micromachining of brittle materials by applying ultrasonic elliptical vibration cutting

Micro-Nanomechatronics and Human Science, 2004 and The Fourth Symposium Micro-Nanomechatronics for Information-Based Society, 2004. ◽

10.1109/mhs.2004.1421290 ◽

2005 ◽

Cited By ~ 22

Author(s):

N. Suzuki ◽

S. Masuda ◽

M. Haritani ◽

E. Shamoto

Keyword(s):

Brittle Materials ◽

Elliptical Vibration Cutting ◽

Vibration Cutting ◽

Elliptical Vibration ◽

Ultrasonic Elliptical Vibration

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

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.467-469.236 ◽

2011 ◽

Vol 467-469 ◽

pp. 236-240 ◽

Cited By ~ 1

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.

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