توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Experimental Investigation of Different Parameters Influence on Material Removal Rate in Conical Wire EDM
اطلاعات انتشار: دومین کنفرانس بین المللی و هشتمین کنفرانس ملی مهندسی ساخت و تولید، سال
تعداد صفحات: ۸
Material removal rate (MRR) is an important parameter in machining especially in non – traditional machining processes such as cylindrical wire electro discharge machining (CWEDM).CWEDM is a mewly developed technology in which a rotary axis is added to usual wire EDM machine . Current paper investigates the effect of main parameters of WEDM such as power , voltage , time off , rotation speed of rotary axis and form factor (cone angle) on MRR in conical CWEDM. Analysis of Variance (ANOVA) has been used for acquiring optimal conditions of machining on AISI D3 cold worded steel parts. Also an equation based on data regression has been presented. It was found that while power and form factor (con angle ) are the most effective parameters on material removal rate (MRR) , time off, rotation speed and voltage are less effective parameters.<\div>

۲Experimental Study of Cylindrical Wire Electrical Discharge Turning (CWEDT) Process, Part 1: MRR
نویسنده(ها): ، ، ،
اطلاعات انتشار: دومین کنفرانس بین المللی و هشتمین کنفرانس ملی مهندسی ساخت و تولید، سال
تعداد صفحات: ۱۳
In this paper, the effects and optimization of machining parameters on material removal rate (MRR) in Cylindrical Wire Electrical Discharge Turning (CWEDT) process is investigated. Material removal rate is chosen as the machining parameters to verify the process. In addition, power, voltage, pulse off time and spindle rotational speed were adopted for evaluation by Taguchi method. A L9(34) Taguchi standard orthogonal array is chosen for the design of experiments. The level of important of the machining parameters on the material removal rate is determined by using analysis of variance (ANOVA). The optimum machining parameter combination was obtained by using the analysis of signal to noise (S\N) ratio. The variation of material removal rate with machining parameters is mathematically modeled by using regression analysis method. Finally, experimental tests were carried out to identify the effectiveness of this proposed method.<\div>

۳Experimental Study of Cylindrical Wire Electrical Discharge Turning (CWEDT) Process, Part 2: Ra & Roundness
نویسنده(ها): ، ، ،
اطلاعات انتشار: دومین کنفرانس بین المللی و هشتمین کنفرانس ملی مهندسی ساخت و تولید، سال
تعداد صفحات: ۱۱
In this paper, the effects and optimization of machining parameters on surface roughness (Ra) and roundness in Cylindrical Wire Electrical Discharge Turning (CWEDT) process is investigated. The CWEDT process was developed to generate precise cylindrical forms on hard, difficult to machine materials. A precise, flexible and corrosion resistance underwater rotary spindle was designed and added to a conventional five axis wire EDM machine to enable the generation of free form cylindrical geometries. Ra and roundness are chosen as the machining parameters to verify the process. In addition, power, voltage, pulse off time and spindle rotational speed were adopted for evaluation by Taguchi method. A L9(34) Taguchi standard orthogonal array is chosen for the design of experiments. The level of important of the machining parameters on Ra and roundness are determined by using analysis of variance (ANOVA). The optimum machining parameter combination was obtained by using the analysis of signal to noise (S\N) ratio. The variation of Ra and roundness with machining parameters is mathematically modeled by using regression analysis method. Finally, experimental tests were carried out to identify the effectiveness of this proposed method.<\div>

۴Analysis of Magnetic Abrasive Finishing on Wire Electrical Discharge Machined Surface Roughness
نویسنده(ها): ، ،
اطلاعات انتشار: دوازدهمین کنفرانس ملی مهندسی ساخت و تولید ایران، سال
تعداد صفحات: ۵
This study employs magnetic abrasive finishing (MAF) improving the surface of specimens fabricated by wire electrical discharge machining (WEDM). Recast layer which is invariably present on surfaces produced by WEDM decrease the usage of this process. Recast layer may be full of cracks and make the surface become hard and brittle and increase the roughness of surfaces. This paper shows that MAF process with steel grits as abrasive powder can improve the WEDM machined surfaces of aluminum alloy cylindrical tubes by removing the recast layer. The present work investigates the effect of some parameters on surface roughness (Ra) using full factorial analysis. The three levels full factorial method is used as design of experiments (DOE) for studying the selected factors. In addition analysis of variance (ANOVA) has been used to indicate significant factors and to obtain an equation, which presents the relationship between surface roughness and machining parameters.<\div>
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