DOI: https://doi.org/10.32515/2414-3820.2022.52.135-155

Physical Features of The Process of Multi-operation Extraction of Cylindrical Parts From a Metal Mesh

Victor Bokov, Oleh Sisa, Volodymyr Mirzak, Volodymyr Sviatskyi, Vitaliy Shmelyov

About the Authors

Victor Bokov, Professor, PhD in Technics (Candidate of Technics Sciences), Central Ukraіnian National Technical University, Kropyvnytskyi, Ukraine, е-mail: Viktor.alia.kntu@gmail.com, ORCID ID: 0000-0002-9340-1617

Oleh Sisa, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Central Ukraіnian National Technical University, Kropyvnytskyi, Ukraine, е-mail: sisaoleh@ukr.net, ORCID ID: 0000-0002-4783-100Х

Volodymyr Mirzak, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Central Ukraіnian National Technical University, Kropyvnytskyi, Ukraine, ORCID ID: 0000-0002-4167-7291

Volodymyr Sviatskyi, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Central Ukraіnian National Technical University, Kropyvnytskyi, Ukraine, e-mail: svv_iamph@ukr.net, ORCID ID: 0000-0002-5889-8875

Vitaliy Shmelyov, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Central Ukraіnian National Technical University, Kropyvnytskyi, Ukraine, ORCID ID: 0000-0003-2567-9980

Abstract

In modern mechanical engineering, a method of single-operation extraction of cylindrical parts from a metal grid with a square mesh is known, which, in particular, has found application for the manufacture of microphone casings. Further improvement of the technology of extracting parts from a metal mesh in the direction of increasing the relative height of the stamped part is associated with the use of a multi-operation method of extraction. The study of this process will allow to significantly reduce the limit coefficient of extraction and thereby significantly increase the relative height of the part. Therefore, the work aimed at improving the technology of manufacturing parts from a metal mesh due to the use of a multi-operation method of extraction is an urgent scientific and practical task. The purpose of the study is to improve the technology of manufacturing cylindrical parts from a metal mesh by using a multi-operation method of drawing. The result of the work is the study of physical limitations that determine the limiting coefficient of multi-operational extraction of cylindrical parts from a metal mesh. The phenomenon of elasticity of the mesh wires was revealed, as a result of which the side wall of the part acquires a curved, close to conical shape. The physical similarity between the process of deformation of a single wire of a metal mesh during multi-operation drawing and the process of bending a flat workpiece is shown, which allows determining the technological effort of each drawing operation using formulas for calculating the bending force. In addition, two forms of instability of the process of multi-operational drawing of cylindrical parts from a metal grid with a square mesh were revealed, and a new method of drawing was proposed, which creates such stamping conditions, in which asymmetric deformation of the part (irreparable defect) is not observed, and separate additional means for cutting the edge of the stamped parts are not used.

Keywords

multi-operation drawing of cylindrical parts, metal grid, square workpiece, drawing limit coefficient, drawing method

Full Text:

PDF

References

1. Zubcov, M.E. (1980). Sheet stamping . (3d ed.). Leningrad: Mashinostroenie. Leningr. otd-nie [in Russian].

2. Romanovskij, V.P. (1979). Cold Forging Handbook. (60-d ed.). Leningrad: Mashinostroenie, Leningr. otd-nie [in Russian].

3. Rudmana, L.I. (Eds.). (1988). Die Builder's Handbook: Sheet Metal Stamping. Moskow: Mashinostroenie [in Russian].

4. Orliuk, M.V., Vyshnevs'kyj, P.S. (2022). Tekhnolohiia kholodnoho shtampuvannia ta konstruiuvannia shtampiv [Technology of cold stamping and design of stamps]. Kyiv KPI im. Ihoria Sikors'koho [in Ukrainian].

5. Bokov, V.M. (2021). Tekhnolohiia kholodnoho shtampuvannia [Cold stamping technology]. Kropyvnyts'kyj: PP «Ekskliuzyv-System» [in Ukrainian].

6. Setka dlja mikrofona DPA microphones DUA0710N. muzline.ua. Retrieved from https://muzline.ua/dpa-microphones-dua0710n/ [in Russian].

7. Bokov, V.M. & Sisa, O.F. (2021). Vytiahuvannia tsylindrychnykh detalej iz ne sutsil'noho materialu [Extrusion of cylindrical parts from non-solid material]. Konstrujuvannja, vyrobnyctvo ta ekspluatacija silʹsʹkohospodarsʹkyx mashyn – Design, manufacture and operation of agricultural machinery, Issue 51, 163-185 [in Ukrainian].

8. Pat. 143027 Ukrajna: MPK V26F 1/40, V21D 22/00 .Sposib vytiahuvannia tsylindrychnykh detalej iz ploskoi metalevoi sitky z kvadratnym vichkom [The method of extracting cylindrical parts from a flat metal grid with a square mesh]. No. u2019 12214; stated. December 24, 2019; has been published July 10, 2020, Bul. No. 13 [in Ukrainian].

9. Zaporozhchenko, V.S. & Bokov, V.M. (2004). Issledovanie rabotosposobnosti inercionnogo vintovogo pressa s ruchnym privodom . Vіsnik SumDU – Bulletin of Sumy State University, 13 (72), 153-159 [in Ukrainian].

10. Anur'ev, V.I. (1980). Handbook of the mechanical engineering designer. (Vols. 1-3; Vol.1). (5d ed.). Moskov: Mashinostroenie [in Russian].

Citations

  1. Зубцов М. Е. Листовая штамповка: учебник. 3-е изд. Л.: Машиностроение. Ленингр. отд-ние, 1980. 432 с.
  2. Романовский В. П. Справочник по холодной штамповке . 60-е изд., пере раб. и доп. Л.: Машиностроение, Ленингр. отд-ние, 1979. 520 с.
  3. Справочник конструктора штампов: Листовая штамповка / Под общ. ред. Л. И. Рудмана. М.: Машиностроение, 1988. 496 с.
  4. Орлюк М.В., Вишневський П.С. Технологія холодного штампування та конструювання штампів: навч. посіб. Київ КПІ ім. Ігоря Сікорського, 2022. 80 с
  5. Боков В. М. Технологія холодного штампування: підручник . Кропивницький: ПП «Ексклюзив-Систем», 2021. 213 с.
  6. Сетка для микрофона DPA microphones DUA0710N. URL: https://muzline.ua/dpa-microphones-dua0710n/
  7. Боков В.М., Сіса О.Ф. Витягування циліндричних деталей із не суцільного матеріалу . Конструювання, виробництво та експлуатація сільськогосподарських машин: загальнодержавний міжвідом-чий науково-технічний збірник . Вип. 51. 2021. С. 163-185.
  8. Спосіб витягування циліндричних деталей із плоскої металевої сітки з квадратним вічком: пат. 143027 Украйна: МПК В26F 1/40, В21D 22/00 . № u201912214; заявл. 24.12.2019; опубл. 10.07.2020, Бюл. № 13.
  9. Запорожченко В. С., Боков В. М. Исследование работоспособности инерционного винтового пресса с ручным приводом . Вісник СумДУ. 2004. № 13 (72). С. 153-159.
  10. Анурьев В. И. Справочник конструктора-машиностроителя: В 3-х т. Т.1. 5-е изд., перераб. и доп. М.: Машиностроение, 1980. 728 с.
Copyright (c) 2022 Victor Bokov, Oleh Sisa, Volodymyr Mirzak, Volodymyr Sviatskyi, Vitaliy Shmelyov