scholarly journals Design and testing of a novel rotary transformer for rotary ultrasonic machining

2017 ◽  
Vol 14 (23) ◽  
pp. 20171033-20171033 ◽  
Author(s):  
Jiyue Duan ◽  
Bin Lin ◽  
Qiang Yang ◽  
Yujia Luan
Keyword(s):  
Ultrasonic Machining ◽  
Rotary Ultrasonic Machining ◽  
Rotary Transformer ◽  
Design And Testing

Modeling Analysis of Contactless Power Transfer System for Rotary Ultrasonic Machining

2016 ◽  
Vol 829 ◽  
pp. 35-40 ◽  
Author(s):  
Xin Wei Wang ◽  
Ai Min Wang ◽  
Xiao Long Wang
Keyword(s):  
High Speed ◽  
Transfer System ◽  
Ultrasonic Machining ◽  
Power Transfer ◽  
Rotary Ultrasonic Machining ◽  
Loosely Coupled ◽  
Rotary Transformer ◽  
Slip Ring ◽  
Transfer Method ◽  
Contactless Power Transfer

In rotary ultrasonic machining (RUM), the traditional power transfer method was achieved by slip ring that cannot cope with high-speed rotary of the tool, which limits the machine potential of RUM. Based on the principle of electromagnetic mutual inductance and the technology of loosely coupled inductively power transfer (LCIPT), a contactless power transfer system (rotary transformer) is built for RUM to achieve its power transfer goal. Resonant Compensation technology is used to enhance the efficiency of the rotary transformer. And the performance of the rotary transformer is validated on Maxwell platform.

Compensation Modeling and Optimization on Contactless Rotary Transformer in Rotary Ultrasonic Machining

2020 ◽  
Vol 142 (10) ◽  
Author(s):  
Jianguo Zhang ◽  
Zhili Long ◽  
Can Wang ◽  
Heng Zhao ◽  
Yangmin Li
Keyword(s):  
Resonant Frequency ◽  
Power Transmission ◽  
Ultrasonic Transducer ◽  
Dynamic Performance ◽  
Input Voltage ◽  
Transmission Efficiency ◽  
Ultrasonic Machining ◽  
Rotary Ultrasonic Machining ◽  
Rotary Transformer ◽  
Received Power

Abstract Rotary ultrasonic machining (RUM) is an effective solution to cut, grind, or drill the advanced brittle hard materials. Contactless rotary transformer, with the advantages of high-power transmission efficiency and reliability, is a potential structure to transmit electric power in RUM. In this study, an impedance model of rotary ultrasonic holder (RUH) is established to find that there exist deviations for the resonant frequency and impedance between the RUH and the ultrasonic transducer, indicating that without compensation the ultrasonic transducer cannot find precisely its own resonant frequency by sweeping frequency. To match the resonant frequency and impedance, four compensation topologies are compared and the Series-Series (SS) topology is discovered as the most suitable option. The compensated capacitance values are determined by visualized solution from the contour line method. Both simulation (from matlab–simulink) and experimental results validate that with compensation elements, the resonant frequency and impedance can be matched precisely between the RUH and ultrasonic transducer and the output voltage and current are with better dynamic performance. Moreover, with the same input voltage, the received power of ultrasonic transducer with compensation capacitors is 7.4 times than the one without compensation. Results verify that the compensation optimization of contactless rotary transformer can improve the vibration amplitude in RUM.

A Mechanistic Approach to the Prediction of Material Removal Rates in Rotary Ultrasonic Machining

1995 ◽  
Vol 117 (2) ◽  
pp. 142-151 ◽  
Author(s):  
Z. J. Pei ◽  
D. Prabhakar ◽  
P. M. Ferreira ◽  
M. Haselkorn
Keyword(s):  
Material Removal Rate ◽  
Material Removal ◽  
Removal Rate ◽  
Diamond Particle ◽  
Machining Parameters ◽  
Ultrasonic Machining ◽  
Rotary Ultrasonic Machining ◽  
Stabilized Zirconia ◽  
Mechanistic Approach ◽  
Wide Range

An approach to modeling the material removal rate (MRR) during rotary ultrasonic machining (RUM) of ceramics is proposed and applied to predicting the MRR for the case of magnesia stabilized zirconia. The model, a first attempt at predicting the MRR in RUM, is based on the assumption that brittle fracture is the primary mechanism of material removal. To justify this assumption, a model parameter (which models the ratio of the fractured volume to the indented volume of a single diamond particle) is shown to be invariant for most machining conditions. The model is mechanistic in the sense that this parameter can be observed experimentally from a few experiments for a particular material and then used in prediction of MRR over a wide range of process parameters. This is demonstrated for magnesia stabilized zirconia, where very good predictions are obtained using an estimate of this single parameter. On the basis of this model, relations between the material removal rate and the controllable machining parameters are deduced. These relationships agree well with the trends observed by experimental observations made by other investigators.

The Research and Development on the Material Removal Mechanism of the Ultrasonic Cutting

2014 ◽  
Vol 1027 ◽  
pp. 40-43
Author(s):  
Yan Yan Lou ◽  
Yan Zhang ◽  
Ying Gao ◽  
Jia Chen Zhang ◽  
Yan Zhou Sun
Keyword(s):  
Material Removal ◽  
Development Trend ◽  
Ultrasonic Machining ◽  
Removal Mechanism ◽  
Rotary Ultrasonic Machining ◽  
Material Removal Mechanism ◽  
Material Removal Model ◽  
The Development Trend ◽  
Removal Model ◽  
Ultrasonic Cutting

Ultrasonic machining is an important part of modern processing technology which is adapt to all kinds of hard brittle materials processing. This paper reviews the latest progress of the material removal mechanism on one-dimensional ultrasonic machining, two-dimensional ultrasonic machining and rotary ultrasonic machining, and expounds the development trend of establishing the material removal model of the ultrasonic machining.

Rotary Ultrasonic Machining: Effects of Tool End Angle on Delamination of CFRP Drilling

2017 ◽  
Author(s):  
Palamandadige K. S. C. Fernando ◽  
Meng (Peter) Zhang ◽  
Zhijian Pei ◽  
Weilong Cong
Keyword(s):  
Carbon Fiber ◽  
Material Removal ◽  
Ultrasonic Machining ◽  
Fiber Reinforced ◽  
Rotary Ultrasonic Machining ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Hole Making ◽  
Fiber Reinforced Plastics ◽  
Carbon Fiber Reinforced

Aerospace, automotive and sporting goods manufacturing industries have more interest on carbon fiber reinforced plastics due to its superior properties, such as lower density than aluminum; higher strength than high-strength metals; higher stiffness than titanium etc. Rotary ultrasonic machining is a hybrid machining process that combines the material removal mechanisms of diamond abrasive grinding and ultrasonic machining. Hole-making is the most common machining operation done on carbon fiber reinforced plastics, where delamination is a major issue. Delamination reduces structural integrity and increases assembly tolerance, which leads to rejection of a part or a component. Comparatively, rotary ultrasonic machining has been successfully applied to hole-making in carbon fiber reinforced plastics. As reported in the literature, rotary ultrasonic machining is superior to twist drilling of carbon fiber reinforced plastics in six aspects: cutting force, torque, surface roughness, delamination, tool life, and material removal rate. This paper investigates the effects of tool end angle on delamination in rotary ultrasonic machining of carbon fiber reinforced plastics. Several investigators have cited thrust force as a major cause for delamination. Eventhogh, it is found on this investigation, tool end angle has more significant influence on the delamination in rotary ultrasonic machining of carbon fiber reinforced plastics comparing to cutting force and torque.

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