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RISS 인기검색어
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- 저자 : Baocheng Xie (검색결과 4 건)
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Effect of Discharge Location on Temperature Distribution during Electrical Discharge Machining
Baocheng Xie,Yanwen Zhang,Yuan Zhang,Ye Dai,Xianli Liu 보안공학연구지원센터 2015 International Journal of Smart Home Vol.9 No.12
The temperature field distribution has a dominant influence on machining efficiency and surface quality during electrical discharge machining (EDM). The discharge location is strongly related to temperature field distribution. Thus, the effect of discharge location on temperature distribution during EDM process should be illustrated to understand the mechanism of temperature field distribution. In this study, the thermal model for EDM process is established using ANSYS software to investigate the temperature field distribution. The model considers more realistic factors such as Gaussian distribution of heat flux, plasma channel radius, latent heat of melting, etc., to agree with actual machining situation. Numerical simulation analysis of the temperature distribution of the two consecutive spark discharges has been carried out considering the relative position relation of discharge location. Based on the numerical simulation, the effect of discharge location on the temperature distribution and material removal volume in pulse discharge process has been analyzed in detail.
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Baocheng Xie,Yanwen Zhang,Jingwei Zhang,Shengle Rend 보안공학연구지원센터 2015 International Journal of Hybrid Information Techno Vol.8 No.5
Debris accumulation in the bottom and side gap leads to a poor machining stability and low machining efficiency of electrical discharge machining (EDM). Thus, an understanding on the mechanisms of debris distribution and exclusion of flow field in the discharge gap during EDM process should be investigated. However, these mechanisms have not been fully understood because debris distribution and exclusion process in the bottom and side gap is difficult to simulate and observe. This paper suggests a two-dimensional model of flow field with kerosene and debris phases for the bottom and side gap in ultrasonic assisted EDM process by computational fluid dynamics. The mechanism of debris distribution and exclusion in the discharge gap during ultrasonic vibration cycle was researched through the model. The effect of amplitude and frequency of ultrasonic vibration of the tool on debris distribution and exclusion during electrical discharge machining of whole array was investigated through numerical simulation. It is shown that ultrasonic vibration of the tool has significantly influence on the debris exclusion from discharge gap. In addition, the debris distribution and exclusion becomes strong with the increase of the amplitude and frequency of ultrasonic vibration of the tool.
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Development of Human-Machine Interface for Teleoperation of a Mobile Manipulator
Baocheng Wang,Zhijun Li,Wenjun Ye,Qing Xie 제어·로봇·시스템학회 2012 International Journal of Control, Automation, and Vol.10 No.6
Human-robot control interfaces have received increased attention during the past decades for conveniently introducing robot into human daily life. In this paper, a novel Human-machine Interface (HMI) is developed, which contains two components. One is based on the surface electromyography (sEMG) signal, which is from the human upper limb, and the other is based on the Microsoft Kinect sensor. The proposed interface allows the user to control in real time a mobile humanoid robot arm in 3-D space, through upper limb motion estimation by sEMG recordings and Microsoft Kinect sensor. The effectiveness of the method is verified by experiments, including random arm motions in the 3-D space with variable hand speed profiles.
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Zhaolong Lia,Baocheng Xie,Yangwei Wang 보안공학연구지원센터 2016 International Journal of Smart Home Vol.10 No.12
Electrochemical machining (ECM) of holes on the surface of nickel-based alloy as tool electrode was investigated to analyze the effect of electric field distribution on hole forming process in ECM of small holes. Based on the experimental and simulation results, it was shown that the law of electric field distribution in electrochemical machining gap with tubular electrode and the effect of gap electric field on dimension of hole were illustrated. In addition, the influences of electrolyte pressure on electric field distribution and stability of machining was studied to conclude the effective factors of machining stability in ECM of holes.
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