Synthesis of cylindrical gears with optimum rolling fatigue strength

Babichev, Dmitry; Storchak, Michael

doi:10.1007/s11740-014-0583-6

Cited by 20 publications

(5 citation statements)

References 8 publications

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“…This significantly expands the possibilities and application area of this research field, as well as providing a significant reduction in the cost of experimental research. In particular, it is relevant in the study of mechanical property generation patterns in subsurface layers of complex-profile parts [10,11] with the use of spatial cutting processes. Spatial cutting processes are characterized by a significant variability in the contact conditions between the tool and the machined material, of which end milling is a striking representative, generating a significant gradient of mechanical properties in the subsurface layers, which is all the more aggravated in the case of hard-to-machine metals and alloys [12].…”

Section: Introductionmentioning

confidence: 99%

Generation of Mechanical Characteristics in Workpiece Subsurface Layers through Milling

Storchak,

Hlembotska,

Melnyk

2024

Materials

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The generation of mechanical characteristics in workpiece subsurface layers as a result of the cutting process has a predominant influence on the performance properties of machined parts. The effect of the end milling process on the mechanical characteristics of the machined subsurface layers was evaluated using nondestructive methods: instrumented nanoindentation and sclerometry (scratching). In this paper, the influence of one of the common processes of materials processing by cutting—the process of end tool milling—on the generation of mechanical characteristics of workpiece machined subsurface layers is studied. The effect of the end milling process on the character of mechanical property formation was evaluated through the coincidence of the cutting process energy characteristics with the mechanical characteristics of the machined subsurface layers. The total cutting power and cutting work in the tertiary cutting zone area were used as energy characteristics of the end milling process. The modes of the end milling process are considered as the main parameters affecting these energy characteristics. The mechanical characteristics of the workpiece machined subsurface layers were the microhardness of the subsurface layers and the total work of indenter penetration, determined by instrumental nanoindentation, and the maximum depth of indenter penetration, determined by sclerometry. Titanium alloy Ti10V2Fe3Al (Ti-1023) was used as the machining material. Based on the evaluation of the coincidence of the cutting process energy characteristics with the specified mechanical characteristics of the machined subsurface layers, the milling mode effect of the studied titanium alloy, in particular the cutter feed and cutting speed, on the generated mechanical characteristics was established.

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Section: Introductionmentioning

confidence: 99%

Generation of Mechanical Characteristics in Workpiece Subsurface Layers through Milling

Storchak,

Hlembotska,

Melnyk

2024

Materials

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“…Three-dimensional numerical models of machining processes using unstable end cutting tools with continuously varying contact conditions between the tool and the machined material [5] offer a significant benefit [6,7]. It is considerably difficult to realize models of such cutting processes for machining complex periodic [8] and non-periodic [9] surfaces of various machine and mechanism parts. Oblique non-free cutting processes with a complex stress-strain state of the machined material and end cutting tools used for machining such parts are very sensitive to the complex conditions of thermomechanical loads acting in the cutting zones [10].…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling of Cutting Characteristics during Short Hole Drilling: Part 2—Modeling of Thermal Characteristics

Storchak,

Stehle,

Möhring

2024

JMMP

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The modeling of machining process characteristics and, in particular, of various cutting processes occupies a significant part of modern research. Determining the thermal characteristics in short hole drilling processes by numerical simulation is the object of the present study. For different contact conditions of the workpiece with the drill cutting inserts, the thermal properties of the machined material were determined. The above-mentioned properties and parameters of the model components were established using a three-dimensional finite element model of orthogonal cutting. Determination of the generalized values of the machined material thermal properties was performed by finding the set intersection of individual properties values using a previously developed software algorithm. A comparison of experimental and simulated values of cutting temperature in the workpiece points located at different distances from the drilled hole surface and on the lateral clearance face of the drill outer cutting insert shows the validity of the developed numerical model for drilling short holes. The difference between simulated and measured temperature values did not exceed 22.4% in the whole range of the studied cutting modes.

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“…These are the characteristics generated by the various cutting processes that are responsible for the sought-performance properties [2]. The relationship between mechanical characteristics and performance properties is particularly significant for critical complex-profile parts [3] functioning in alternating and high contact loads [4]. The mechanical characteristics of the machined subsurface layers of parts that correlate quite closely with various performance properties of these parts include the characteristics of the machined material structure, microhardness of these layers [5], distribution of residual stresses in these layers [6], and the surface integrity of the Metals 2024, 14, 683 2 of 19 machined parts [5,7].…”

Section: Introductionmentioning

confidence: 99%

Interaction of Mechanical Characteristics in Workpiece Subsurface Layers with Drilling Process Energy Characteristics

Storchak,

Hlembotska,

Melnyk

et al. 2024

Metals

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The performance properties of various types of parts are predominantly determined by the subsurface layer forming methods of these parts. In this regard, cutting processes, which are the final stage in the manufacturing process of these parts and, of course, their subsurface layers, play a critical role in the formation of the performance properties of these parts. Such cutting processes undoubtedly include the drilling process, the effect of which on the mechanical characteristics of the drill holes subsurface layers is evaluated in this study. This effect was evaluated by analyzing the coincidence of the energy characteristics of the short hole drilling process with the mechanical characteristics of the drilled holes’ subsurface layers. The energy characteristics of the short-hole drilling process were the total drilling power and the cutting work in the tertiary cutting zone, which is predominantly responsible for the generation of mechanical characteristics in the subsurface layers. As mechanical characteristics of the drill holes’ subsurface layers were used, the microhardness of machined surfaces and total indenter penetration work determined by the instrumented nanoindentation method, as well as maximal indenter penetration depth, were determined by the sclerometry method. Through an analysis of the coincidence between the energy characteristics of the drilling process and the mechanical characteristics of the subsurface layers, patterns of the effect of drilling process modes, drill feed, and cutting speed, which essentially determine these energy characteristics, on the studied mechanical characteristics have been established. At the same time, the increase in the energy characteristics of the short-hole drilling process leads to a decrease in the total indenter penetration work and the maximum indenter penetration depth simultaneously with an increase in the microhardness of the drilled holes’ subsurface layers.

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Synthesis of cylindrical gears with optimum rolling fatigue strength

Cited by 20 publications

References 8 publications

Generation of Mechanical Characteristics in Workpiece Subsurface Layers through Milling

Generation of Mechanical Characteristics in Workpiece Subsurface Layers through Milling

Numerical Modeling of Cutting Characteristics during Short Hole Drilling: Part 2—Modeling of Thermal Characteristics

Interaction of Mechanical Characteristics in Workpiece Subsurface Layers with Drilling Process Energy Characteristics

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