Advanced approach for a demand-oriented fluid supply in grinding

Heinzel, Carsten; Meyer, Daniel; Kolkwitz, B.; Eckebrecht, J.

doi:10.1016/j.cirp.2015.04.009

Cited by 31 publications

(9 citation statements)

References 10 publications

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“…Usually, experimental tests constitute basis for elaborating and optimizing coolant provision conditions in grinding processes. Effectiveness of the applied machining conditions can be evaluated on their basis [14][15][16]. Nevertheless, even if the experimental tests facilitate obtaining information about the effectiveness of the executed process, their great disadvantage is lack of the possibility of precise analysis of phenomena occurring during the liquid flow in the grinding process.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of coolant flow in the grinding zone

Stachurski

Sawicki

Krupanek

et al. 2019

Int J Adv Manuf Technol

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The article presents results of research concerning computational fluid dynamics (CFD) of water oil emulsion in grinding zone during sharpening of hob cutter face surface. The numerical simulations made possible to determine the influence of different angular nozzle settings and nominal emulsion flow rate on the quantity of emulsion directly reaching the area of contact between the grinding wheel and the machined material. "SST k-ω" model, available in Ansys CFX program, was used in the numerical analysis; however, Kato and Launder's modifications were used in the model. Experimental tests were carried out in order to verify results obtained on basis of the numerical simulations. The percentage rate of grinding wheel clogging was used as a verifying parameter. Analysis of the clogging made it possible to indirectly evaluate results of the numerical simulation. The clogging measurements were carried out using optical method by taking microscopic images of the grinding wheel active surface (GWAS), which were later analyzed using an image analysis program. As a result of the conducted numerical simulations, it was concluded that the greatest effectiveness of emulsion provision into the grinding zone was obtained when the nozzle was set at the smallest of the examined angles (30°) and greatest of the examined nominal flow rates (7 l/min). This conclusion was confirmed with results of experimental tests, where it was also observed that increasing the nominal flow rate over 5 l/min does not have significant influence on the amount of clogging on the grinding wheel active surface.

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Section: Introductionmentioning

confidence: 99%

Numerical analysis of coolant flow in the grinding zone

Stachurski

Sawicki

Krupanek

et al. 2019

Int J Adv Manuf Technol

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“…The reasoning behind this is that the porosity of the wheel significantly influences the useful flow rate through the grinding zone. 16 The nozzle design 17–19 and fluid-supply parameters (nozzle angle, nozzle height, nozzle outlet area and fluid jet velocity), 20,21 however, were not the focus of modeling and analysis.…”

Section: Numerical Modelmentioning

confidence: 99%

The use of computational fluid dynamics in the analysis of fluid flow and thermal aspects in grinding

Mihić

Dražumerič

Pušavec

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part B:

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A numerical model based on computational fluid dynamics is developed to analyze fluid flow and thermal aspects in grinding. The model uses multiphase fluid flow with heat transfer based on the volume-of-fluid method, convection, conduction in solids and a multiple reference frame model of the porous grinding zone. Fluid velocity vectors, useful flow rate, grinding temperatures and energy partition are predicted using the model. In lieu of direct measurements of these quantities, the verification relies on the indirect assessment of surface integrity. The simulation results provide adequate agreement with the measured residual stress, depth of heat-affected zone and full width at half maximum profile with respect to the grinding temperatures.

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“…To reduce the possibility of undesirable changes in the structure of the surface layer of the workpiece material and the layers located deeper, appropriate methods are used to lower the working temperature at the contact between the grinding wheel and the workpiece material [21], [22][23][24]. In most cases, a coolant is used which, in addition to lowering the temperature, assists in removing chips from the grinding area.…”

Section: Introductionmentioning

confidence: 99%

Temperature measurement analysis in the cutting zone during surface grinding

Jamuła¹

2021

J. meas. eng.

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The grinding process is commonly used as the final stage of processing. It is used to produce elements that require more tolerance and smooth surface. Considering other processing, such as turning or milling, grinding requires very high energy input per unit volume of material removal. A significant proportion of this energy in the process turns into heat in the grinding zone, which leads to increased temperature. This paper describes and compares two methods of temperature measurement in the cutting zone during surface grinding. The study aimed to determine the differences in the results of temperature measurements using an indirect method, using an analysis of thermal images, and a direct method, using a thermocouple. Two different sets of measurement apparatus were used in the experiment: a thermal imaging camera and a thermocouple with appropriately selected software. The factors affecting the errors obtained with each of the above measurement methods are discussed and the resulting differences in the results are discussed.

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Advanced approach for a demand-oriented fluid supply in grinding

Cited by 31 publications

References 10 publications

Numerical analysis of coolant flow in the grinding zone

Numerical analysis of coolant flow in the grinding zone

The use of computational fluid dynamics in the analysis of fluid flow and thermal aspects in grinding

Temperature measurement analysis in the cutting zone during surface grinding

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