Geometric Modeling of Lathe Cutters for Turning High-Precision Stainless Steel Tapered Threads

Onysko, Oleh; Medvid, Iulia; Panchuk, Vitalii; Rodić, Vesna; Barz, C

doi:10.1007/978-3-030-77719-7_47

Cited by 13 publications

(2 citation statements)

References 23 publications

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“…The authors of the study [71], due to the algorithm developed by the authors, concluded that it is admissible to use threaded cutters with a back-rake angle of γ = 12 • for the manufacture of a tool-joint thread 2 7/8 Reg. At the same time, the deviation from the nominal half-profile angle is less than 0.1 • , which is less than 15% of the tolerance.…”

Section: The Influence Of the Back-rake Angle At The Nose Of The Lath...mentioning

confidence: 99%

Analytical Model of Tapered Thread Made by Turning from Different Machinability Workpieces

Onysko,

Kopei,

Barz

et al. 2024

Machines

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High-precision tapered threads are widely used in hard-loaded mechanical joints, especially in the aggressive environment of the drilling of oil and gas wells. Therefore, they must be made of workable materials often difficult to machine. This requires the use of high-performance cutting tools, which means the application of non-zero geometric parameters: rake and edge inclination angles. This study is based on analytical geometry methodology and describes the theoretical function of the thread profile as convoluted surfaces dependent on the tool’s geometric angles. The experiments were conducted using a visual algorithm grounded on the obtained function and prove the practical use of the scientific result. They predict the required accuracy of thread made using a lathe tool with a rake angle of up to 12°.

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Section: The Influence Of the Back-rake Angle At The Nose Of The Lath...mentioning

confidence: 99%

Analytical Model of Tapered Thread Made by Turning from Different Machinability Workpieces

Onysko,

Kopei,

Barz

et al. 2024

Machines

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“…directed formation and transformation of product properties during manufacturing [29]; • optimization of mechanical processing by turning [30][31][32], milling [33,34] and grinding [35]; • forming the helical surfaces of threads [36,37].…”

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confidence: 99%

An Analytical–Numerical Model for Determining “Drill String–Wellbore” Frictional Interaction Forces

Bembenek,

Grydzhuk,

Gajdzik

et al. 2024

Energies

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Currently, drilling of directional oil and gas wells under complex technical-technological and mining-geological conditions requires the use of drill pipes made of various materials. In turn, to choose rational modes of strengthening drill pipes and drill string layouts, information on the contact forces and friction forces of the drill string pipes on boreholes is necessary. Drill pipe curved sections friction with boreholes and drill bit resistance moment changes are the main causes of uneven rotation of a drill string during rotary or combined drilling methods and the occurrence of parametric oscillations. To reduce the cost of mechanical energy for well wiring, it is necessary to take into account the “drill string–borehole rocks” force interaction to estimate the magnitude of the frictional forces and their influence on the technological parameters of the drilling process. To solve this problem, mathematical models of “conventionally vertical and inclined drill string sections–borehole” were built. Based on the industrial data, an analysis of the force interaction of a deformed drill string composed of pipes made of different materials (aluminum, titanium, steel) was carried out. Analytical dependences were obtained for determining the contact forces and friction of the pipes on boreholes. A numerical study of the change of these power factors depending on the depth of the well under conditions of intensive vibration loading was carried out. The amplitude values of these forces, the frequency of their change for good sections, as well as the places for the most rational installation of drill pipes in the layout of the drill string were estimated. It was established that the intensity of contact and friction forces for steel drill pipes is greater than for titanium or aluminum ones. It is shown that the greater impact of a solid steel string on contact forces and frictional forces compared to a layout with sections of titanium or aluminum pipes in the range of vibration frequencies of 8–22 Hz corresponds to a bit rotation frequency of 70–80 rpm. The practical application of the obtained research results will contribute to the improvement of technical and economic indicators of the well drilling process.

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Investigation of the Influence of tapered Thread Pitch Deviation on the Drill-String Tool-Joint Fatigue Life

Kopei,

Onysko,

Kusyi

et al. 2022

Lecture Notes in Networks and Systems

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Geometric Modeling of Lathe Cutters for Turning High-Precision Stainless Steel Tapered Threads

Cited by 13 publications

References 23 publications

Analytical Model of Tapered Thread Made by Turning from Different Machinability Workpieces

Analytical Model of Tapered Thread Made by Turning from Different Machinability Workpieces

An Analytical–Numerical Model for Determining “Drill String–Wellbore” Frictional Interaction Forces

Investigation of the Influence of tapered Thread Pitch Deviation on the Drill-String Tool-Joint Fatigue Life

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