Influence of application of hybrid MQL-CCA method of applying coolant during hob cutter sharpening on cutting blade surface condition

Stachurski, Wojciech; Sawicki, J.; Wójcik, R.; Nadolny, Krzysztof

doi:10.1016/j.jclepro.2017.10.059

Cited by 51 publications

(16 citation statements)

References 102 publications

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“…Sharpening of the hob cutters using the CAOM method in terms of the grinding parameters used did not cause any significant changes in the microhardness of the surface layer compared to the flooding method. The results obtained for the MQL and CAG methods used separately indicate a significant, unacceptable decrease in the microhardness of the tool's rake face after grinding [112,113]. The roughness of the rake face obtained during sharpening with the CAOM method was similar to the values obtained for the flooding method.…”

Section: Cold Air and Oil Mist (Caom)supporting

confidence: 59%

“…Stachurski et al [112] applied the hybrid CAOM method during the sharpening process of hob cutters (Fig. 2).…”

Section: Cold Air and Oil Mist (Caom)mentioning

confidence: 99%

“…Moreover, the cutting edges after CAOM sharpening did not have typical defects in the form of burrs or chipping. SEM images, on the other hand, revealed the occurrence of burrs on the edges of the blades, which were sharpened with MQL method or with CCA [112].…”

Section: Cold Air and Oil Mist (Caom)mentioning

confidence: 99%

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Modern Approach to Delivery Coolants, Lubricants and Antiadhesives in the Environmentally Friendly Grinding Processes

Nadolny

Kieraś

Sutowski

2020

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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Control of thermal conditions in the grinding zone is possible through effective delivery of substances with cooling, lubricating and antiadhesive properties during the machining process. In addition to the benefits of coolants, however, a number of economic and ecological problems arise, which include the costs of purchase, use and maintenance as well as the environmental impact of its disposal. These negative aspects of the use of cooling and lubricating liquids have contributed to the modern trend of minimizing their output in machining processes, including grinding. This article presents comprehensive characteristics of knowledge in the field of liquids, gases and solids with cooling, lubricating and antiadhesive properties. The author’s original classification of cooling and lubricating agents by their physical state was proposed and a complete list of known modern environmentally friendly methods of cooling and lubrication of the grinding zone was presented. In order to highlight their beneficial features, the background of conventional methods of delivery coolants, lubricants and antiadhesives to the grinding zone used for years were also characterised. A comprehensive list of all known methods of cooling and lubrication of the grinding zone classified according to the physical state of the delivered medium with a clear separation of hybrid methods consisting in simultaneous delivery of many cooling and lubricating agents was described in the summary. The article concludes with the characteristics of directions of further development in the field of cooling and lubrication of the grinding zone.

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Section: Cold Air and Oil Mist (Caom)supporting

confidence: 59%

“…Stachurski et al [112] applied the hybrid CAOM method during the sharpening process of hob cutters (Fig. 2).…”

Section: Cold Air and Oil Mist (Caom)mentioning

confidence: 99%

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Modern Approach to Delivery Coolants, Lubricants and Antiadhesives in the Environmentally Friendly Grinding Processes

Nadolny

Kieraś

Sutowski

2020

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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“…Academic and technical subject literature lacks thorough research and works concerning application of coolants in hob cutter grinding. The scarce works that exist focus on describing experimental tests [10,27], completely skipping numerical simulations, including analysis of the coolant flow in the grinding zone. It must be, however, highlighted that the process of grinding hob cutters face is conducted in specific machining conditions connected with the following: (1) shape of the grinding wheel whose active surface (GWAS) is part of a conic surface, (2) shape of the face surface which adopts the form of a rack, additionally placed along the helix with large traverse, and (3) kinematics of the grinding wheel and the workpiece which requires constant linear contact of both elements.…”

Section: Introductionmentioning

confidence: 99%

“…Process of hob cutter grinding. a Machining area[27]. b Work cycle[10] Location of the zone on the grinding wheel active surface which the emulsion was directed onto.…”

mentioning

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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Analysis of Cutting Force and Power Under the Conditions of Minimized Cooling in the Process of Turning AISI-1045 Steel with the Use of the Parameter Space Investigation Method

Maruda

Legutko

Mrugalski³

et al. 2020

Lecture Notes in Mechanical Engineering

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Influence of application of hybrid MQL-CCA method of applying coolant during hob cutter sharpening on cutting blade surface condition

Cited by 51 publications

References 102 publications

Modern Approach to Delivery Coolants, Lubricants and Antiadhesives in the Environmentally Friendly Grinding Processes

Modern Approach to Delivery Coolants, Lubricants and Antiadhesives in the Environmentally Friendly Grinding Processes

Numerical analysis of coolant flow in the grinding zone

Analysis of Cutting Force and Power Under the Conditions of Minimized Cooling in the Process of Turning AISI-1045 Steel with the Use of the Parameter Space Investigation Method

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