Surface roughness of two-frequency elliptical vibration texturing (TFEVT) method for micro-dimple pattern process

Microstructured surfaces have extensive applications in a wide array of fields due to their improved functional performance. Existing manufacturing methods for these surfaces fall short of efficiency for volume production or are only applicable to a specific class of materials. In this paper, an innovative and highly efficient machining method, elliptical vibration texturing (EVT), is proposed for rapid generation of microdimples on planar engineered surfaces. The cutting tool of the EVT process vibrates along an elliptical trajectory. The elliptical vibrations, when coupled with a high cutting velocity, impose microdimples onto workpiece surfaces while machining. The high productivity is achieved by adopting a newly designed tertiary motion generator, which is able to deliver required elliptical vibrations at an ultrasonic frequency. The shape and distribution of the generated dimple patterns have been theoretically analyzed and predicted by a proposed simulation model. Preliminary texturing results using aluminum and brass as workpieces are given to validate the process principle and simulation model.

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A Polishing Method of Single-Incentive Ultrasonic Elliptical Vibration for Tungsten Carbide Mould

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.175.140 ◽

2011 ◽

Vol 175 ◽

pp. 140-144 ◽

Cited By ~ 1

Author(s):

Shao Hui Yin ◽

Zhi Qiang Xu ◽

Jian Wu Yu ◽

Ze Biao Wang

Keyword(s):

Surface Roughness ◽

Finite Element ◽

Tungsten Carbide ◽

Ultrasonic Transducer ◽

Experimental Result ◽

Basic Principles ◽

Elliptical Vibration ◽

Element Simulation ◽

Mould Surface ◽

Ultrasonic Elliptical Vibration

The basic principles of ultrasonic transducer and ultrasonic elliptical vibration polishing are investigated. A new kind of single-incentive ultrasonic transducer is designed, and the finite element simulation is conducted, a polishing device is developed based on the ultrasonic elliptical vibration. The polishing experiment is adopted to polish a tungsten carbide mold with the diameter 5cm. The experimental result shows that the tungsten carbide mould surface roughness changes from the original 0.026μm to 0.017μm.

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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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Fast Generation of Planar Micro-Structured Surfaces by Elliptical Vibration Texturing

Volume 2: Materials; Biomanufacturing; Properties, Applications and Systems; Sustainable Manufacturing ◽

10.1115/msec2016-8710 ◽

2016 ◽

Author(s):

Yang Yang ◽

Ping Guo

Keyword(s):

Simulation Model ◽

Functional Performance ◽

Ultrasonic Frequency ◽

Specific Class ◽

Structured Surfaces ◽

High Productivity ◽

Elliptical Vibration ◽

Elliptical Vibration Texturing ◽

Cutting Velocity ◽

Micro Dimples

Micro-structured surfaces have extensive applications in a wide array of fields, due to their improved functional performance. Existing manufacturing methods for these surfaces fall short of efficiency for volume production or are only applicable to a specific class of materials. In this paper, an innovative and highly-efficient machining method, elliptical vibration texturing (EVT), is proposed for rapid generation of micro-dimples on planar engineered surfaces. The cutting tool of the EVT process vibrates along an elliptical trajectory. The elliptical vibrations, when coupled with a high cutting velocity, impose micro-dimples onto workpiece surfaces while machining. The high productivity is achieved by adopting a newly designed tertiary motion generator which is able to deliver required elliptical vibrations at an ultrasonic frequency. The shape and distribution of the generated dimple patterns have been theoretically analyzed and predicted by a proposed simulation model. Preliminary texturing results using aluminum and brass as workpieces are given to validate the process principle and simulation model.

Download Full-text