An analysis and optimisation of the geometrical inaccuracy due to wire lag phenomenon in WEDM

Puri, Asit Baran; Bhattacharyya, B.

doi:10.1016/s0890-6955(02)00158-x

Cited by 198 publications

(98 citation statements)

References 6 publications

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“…Researchers Puri and Bhattacharya, for example, have been working in this research area. They examined the geometrical accuracy of the machined surface of steel at WEDM and its dependence on the wire electrode feed rate using the Taguchi method [4]. Based on the experimental results, they found out that the significant factors for geometrical inaccuracy due to wire lag are MTP.…”

Section: Introductionmentioning

confidence: 99%

Prediction of the Geometrical Accuracy of the Machined Surface of the Tool Steel EN X30WCrV9-3 after Electrical Discharge Machining with CuZn37 Wire Electrode

Straka

Čorný

Piteľ

2017

Metals

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Abstract:The geometrical accuracy of the machined surface can generally be understood mainly as accuracy of shape, orientation, position and run-out. As a general rule; it is quantified by the corresponding deviations from the nominal area. The size of the geometric deviation from the nominal area may in practice affect the conventionally measured value of the dimension, even if the required dimensional tolerance is adhered to. Since electro-erosive machining technology belongs to very precise finishing technologies; even the small geometrical accuracy deviation has a negative impact on the resulting quality of machined surfaces. The aim of the experiments was to contribute to the knowledge database, which defines the influence of the process parameters at electrical discharge machining with the CuZn37 tool electrode on errors of geometrical accuracy of the machined surface. On the basis of the results of the experimental measurements, graphical dependencies were determined which predict geometrical accuracy of the machined surface in terms of the maximum deviation of flatness after electrical discharge machining of tool steel EN X30WCrV9-3 (W.-Nr. 1.2581) with CuZn37 wire electrode of 0.20 mm diameter to determine the appropriate combination of process parameters.

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Section: Introductionmentioning

confidence: 99%

Prediction of the Geometrical Accuracy of the Machined Surface of the Tool Steel EN X30WCrV9-3 after Electrical Discharge Machining with CuZn37 Wire Electrode

Straka

Čorný

Piteľ

2017

Metals

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“…Geometrical inaccuracy due to wire lag phenomenon in wire-cut electrical discharge machining has been analyzed and optimized by (Puri & Bhattacharyya 2003). Also, the trend of variation of the geometrical inaccuracy caused due to wire lag with various machine control parameters has been studied.…”

Section: Introductionmentioning

confidence: 99%

Optimization of machining parameters and wire vibration in wire electrical discharge machining process

Habib

2017

Mech Adv Mater Mod Process

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Background: Wire Electrical discharge machining (WEDM) has higher capability for cutting complex shapes with high precision for very hard materials without using high cost of cutting tools. During the WEDM process, the wire behaves like a metal string, straightened by two axial pulling forces and deformed laterally by a sum of forces from the discharge process. Major forces acting on the wire can be classified into three categories. The first is a tensile force, pulling the wire from both sides in axial direction and keeping it straight. The second is the dielectric flushing force that comes from circulation of the dielectric fluid in the machining area. The third category consists of forces of different kinds resulting from sparking and discharging. Large amplitude of wire vibration leads to large kerf widths, low shape accuracies, rough machined surfaces, low cutting speeds and high risk of wire breakage. Such tendencies for poor machining performance due to wire instability behavior appear with thinner wires. Methods: The present work investigates a mathematical modeling solution for correlating the interactive and higher order influences of various parameters affecting wire vibration during the WEDM process through response surface methodology (RSM). The adequacy of the above proposed model has been tested using analysis of variance (ANOVA). Results: Optimal combination of machining parameters such as wire tension, wire running speed, flow rate and servo voltage parameters has been obtained to minimize wire vibration. Conclusions: The analysis of the experimental observations highlights that the wire tension, wire running speed, flow rate and servo voltage in WEDM greatly affect average wire vibration and kerf width.

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“…It was concluded that average surface was improved in liquid nitrogen cooling of the electrode [8]. Experimental study has been done to investigate the influence of process parameters for MRR, SR, Kerf, over cut and corner accuracy by machining of advanced materials by using Taguchi and ANOVA method [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study of Aerospace Material during Fabrication of V Groove using WEDM

Goyal¹

2017

IJMPERD

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In this experimental study, the machining parameters, tool electrode, current, pulse on time, pulse of time, wire feed and wire tension has been studied using Inconel-625 as work piece in Wire electrical discharge machining (WEDM).The optimization of these parameters is very crucial for the greatest manufacturing results and production at the lowest cost. In order to get the maximum output from these industries, the material removal rate and surface roughness should be optimized. The experiment has been executed using Taguchi's mixed array L18 (2 1 *3 5) and ANOVA technique using MINITAB software to determine the significant and non-significant parameters. This paper demonstrates that the WEDM process parameters can be adjusted for the achievement of better MRR and SR simultaneously.

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An analysis and optimisation of the geometrical inaccuracy due to wire lag phenomenon in WEDM

Cited by 198 publications

References 6 publications

Prediction of the Geometrical Accuracy of the Machined Surface of the Tool Steel EN X30WCrV9-3 after Electrical Discharge Machining with CuZn37 Wire Electrode

Prediction of the Geometrical Accuracy of the Machined Surface of the Tool Steel EN X30WCrV9-3 after Electrical Discharge Machining with CuZn37 Wire Electrode

Optimization of machining parameters and wire vibration in wire electrical discharge machining process

An Experimental Study of Aerospace Material during Fabrication of V Groove using WEDM

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