Dynamic Stability of the Technological Machining System in EDM*

Enache, S.; Opran, Constantin Gheorghe

doi:10.1016/s0007-8506(07)62427-5

Cited by 11 publications

(4 citation statements)

References 6 publications

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“…The correction in machining can be done in reference to the center of the ET(wire)in a CNC controller. The material removal rate from the workpiece during a single pulse is estimated by the following equation [49][50][51]:…”

Section: Introductionmentioning

confidence: 99%

“…The material removal rate from the workpiece during a single pulse is estimated by the following equation [ 49 , 50 , 51 ]:

where

is the duration of a single pulse (μs), and m is the weight lost during the EDM process (kg). Data in the literature [ 31 , 51 ] indicate that MRR depends on the value of the interelectrode gap S (m), the feed rate V (m/s), the physical and mechanical properties of the processed material, and the workpiece thickness h (m).…”

Section: Introductionmentioning

confidence: 99%

“…The coefficient for a fraction of the energy (

) utilized in the machining process is represented in Equation (5) [ 31 , 50 ]:

where K 1 is the amount of energy lost during the heating and evaporation of the dielectric fluid; K 2 is amount of energy lost in the ET. The amount of heat Q (J) transferred to the WE for heating and melting is determined by the formula:

where m is the mass of the workpiece (kg); C 1 is the specific heat capacity of the material in the solid state (J/kg K) C 2 is the specific heat capacity of the material in the liquid state (J/kg K);

is the temperature difference between the initial and final heating points (K); λ is the specific heat of fusion of the material (J/kg); and r is the specific heat of vaporization (J/kg).…”

Section: Introductionmentioning

confidence: 99%

“…The coefficient for a fraction of the energy (η u ) utilized in the machining process is represented in Equation ( 5) [31,50]:…”

mentioning

confidence: 99%

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Analysis of Wire-Cut Electro Discharge Machining of Polymer Composite Materials

et al. 2021

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This study presents the analysis of wire-cut electro-discharge machining (WIRE-EDM) of polymer composite material (PCM). The conductivity of the workpiece is improved by using 1 mm thick titanium plates (layers) sandwiched on the PCM. Input process parameters selected are variable voltage (50–100 V), pulse duration (5–15 μs), and pause time (10–50 μs), while the cut-width (kerf) is recognized as an output parameter. Experimentation was carried out by following the central composition design (CCD) design matrix. Analysis of variance was applied to investigate the effect of process parameters on the cut-width of the PCM parts and develop the theoretical model. The results demonstrated that voltage and pulse duration significantly affect the cut-width accuracy of PCM. Furthermore, the theoretical model of machining is developed and illustrates the efficacy within the acceptable range. Finally, it is concluded that the model is an excellent way to successfully estimate the correction factors to machine complex-shaped PCM parts.

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Section: Introductionmentioning

confidence: 99%

“…The material removal rate from the workpiece during a single pulse is estimated by the following equation [ 49 , 50 , 51 ]:

where

Section: Introductionmentioning

confidence: 99%

“…The coefficient for a fraction of the energy (

) utilized in the machining process is represented in Equation (5) [ 31 , 50 ]:

is the temperature difference between the initial and final heating points (K); λ is the specific heat of fusion of the material (J/kg); and r is the specific heat of vaporization (J/kg).…”

Section: Introductionmentioning

confidence: 99%

“…The coefficient for a fraction of the energy (η u ) utilized in the machining process is represented in Equation ( 5) [31,50]:…”

mentioning

confidence: 99%

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