Professor S.V. Karpeev is 60 years old

Kolomiets, Eduard I.

doi:10.18287/1613-0073-2016-1638-217-225

Cited by 2 publications

(6 citation statements)

References 47 publications

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“…In order to reliably estimate the cutting force when boring screw non-rigid parts during experimental studies, the required number of measurements of the controlled parameters (repetition of experiments) was determined according to the methodology outlined in [1][2]. The experiments were carried out three times.…”

Section: Table 1 -Results Of Factors Coding and Their Levels Of Varia...mentioning

confidence: 99%

“…The obtained results of the calculations were entered in the table of the obtained results of experimental studies. The analysis of the obtained results of the experiments was carried out using a wellknown method of processing and analysis of the conducted experimental studies [1][2].…”

Section: Table 1 -Results Of Factors Coding and Their Levels Of Varia...mentioning

confidence: 99%

“…At the same time, the response function (optimization parameter) was taken as an approximate mathematical model of a full quadratic polynomial [1][2], which describes the real experimental process: The coefficients of the approximating polynomial, presented in the form of a complete quadratic equation under the condition of orthogonality and symmetry, were determined according to the appropriate formulas [1]:…”

Section: Table 1 -Results Of Factors Coding and Their Levels Of Varia...mentioning

confidence: 99%

“…Verification of the adequacy of the selected mathematical model with experimental data, that is, the correspondence of the mathematical model to the real process, was carried out according to Fisher's F test as follows [2]:…”

Section: Table 1 -Results Of Factors Coding and Their Levels Of Varia...mentioning

confidence: 99%

“…In this way, an experimental array of optimization parameter data was obtained depending on the feed and cutting depth. From the entire obtained experimental array of data, a data sample of one specific feed value with different values of the cutting depth was created [1][2]. The obtained numerical results of the cutting force were entered in the table of a conditional full-factor experiment [1].…”

Section: Analysis Of Literature Data and Statement Of The Problemmentioning

confidence: 99%

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Investigation of Cutting Force During Boring of Screw Non-Rigid Machine Parts

et al. 2023

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In the work, the peculiarities of boring of screw workpieces are described. The regularities of the processes of boring screw non-rigid parts have been established. The specifics of the design of the equipment for boring screw non-rigid parts and the expediency and prospects of using screw workpieces are substantiated. It is based on theoretical and experimental studies. A theoretical generalization and a new solution to the scientific and technical problem expressed in the development and creation of technological processes for processing non-rigid screw workpieces, are presented. This will make it possible to ensure the expansion of technological capabilities and the improvement of technical and economic parameters. Calculations were carried out using a package of applied statistical programs for processing and analyzing the results of experimental studies for a PC. According to these results, the dependences of the response surfaces of the optimization parameter and the two-dimensional section of the response surfaces were constructed and analyzed for a visual representation of the results of the experimental studies. The dependences of the change in cutting force on feed and cutting depth were constructed and analyzed. The dependences of the optimization parameter, that is, the dependence of the cutting force on the change of one input factor with a constant value of the other two factors, were also substantiated. After carrying out research using the program «Statistika», a two-dimensional section of the response surface of the dependence of the cutting force on the feed and depth of cut and the response surface of the dependence of the cutting force on the feed and depth of cut were constructed. The obtained experimental broken line was built based on the results of the conducted research. Approximation of it was carried out according to known standard methods, while the amount of deviation (mismatch) was determined by the method of least squares. Key words: cutting process, feed, cutting depth, nature of loads, boring process, statistical analysis, lathe and screw-cutting machine.

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Section: Table 1 -Results Of Factors Coding and Their Levels Of Varia...mentioning

confidence: 99%

Section: Table 1 -Results Of Factors Coding and Their Levels Of Varia...mentioning

confidence: 99%