IMPROVING OF ROUND HOLE CUTTING PROCESS IN THE SHEET METAL
Anatoliy Ostrovsky– Assistant of the Department "Machinery and Equipment for Agricultural Production" of the Vinnytsia National Agrarian University (3, Solnechnaya St., Vinnitsa, 21008, Ukraine, email: firstname.lastname@example.org, https://orcid.org/0000-0001-5700-3593).
Improving existing technological processes is an important stage in the development of all industries. As a consequence, this article is devoted to the analysis of the process of flanging round holes in sheet steel. The existing typical technological process, with a detailed analysis, gives grounds for substantiating the idea of an innovative solution. Changing the sequence of the traditional flanging method will ensure high productivity and material savings.
Of the many promising methods of metal forming by pressure, which include flanging of round holes, two are given for comparison: the traditional one and the improved one. The methodology of the traditional direction, worked out over the years, provides for a clear sequence of the technological process using tools for marking, centering, making a hole and using tools for flanging.
The final, after the previous operations of marking the centers of the holes, punching, making holes, is the flanging stage. The tapered punch (usually a metal rod) prevents the small-diameter hole from deviating from the marking lines and ensures the centering of the punch-blank-matrix system. Following the above steps, the conventional workflow involves positioning the workpiece over the surface of the punch hole to guide the tool in the desired direction. For the manufacture of a flanged hole, a special sharpening of the working part of the punch is performed so that the diameter of the central part of the tool is equal to the difference between the diameters of the guide hole of the matrix and the inner diameter of the workpiece of the part. To avoid further displacement of the hole, the workpiece is centered by placing it on the die and the next operation is supposed to lower the punch to flang the hole.
As a result, the article touches on the topic, taking into account the widespread use of thin sheet metal, including in the agricultural sector, the feasibility of using an innovative idea to improve the technological process associated with the processing of sheet material, namely thin metal sheets. It is advisable to note that, for example, a material is considered that is characterized by its versatility, namely steel. Despite numerous sources devoted to the study of improving the flanging technological process, there are a number of issues, in particular, the extension of this direction to numerous varieties of metal materials that have surfaces with and without coating, various thicknesses within thin-walled rolled products. The most significant result is the improved technological process of flanging will find application in the system of efficient servicing of agricultural machinery.
 Pakholko S. A. (2002). Zabezpechennya yakosti vyrobiv v protsesakh vidbortuvannnya : dys. Pakholko S. A., kand. tekhn. nauk : 01.02.04. Zaporizhzhya, 150 [in Ukrainian].
 Tadeush Balavender, Romana Eva Shliva, Yoanna Kosidlo. Plastychne formuvannya krayiv flantsevykh otvoriv u tytanovykh lystakh z vykorystannyam efektu termichnoho tertya. URL: file:///C:/Users/anato/Downloads/7-Tekst%20artyku%C5%82u-6-1-10-20180131.pdf (data zvernennya: 30.05.2021). [in Poland].
 Kalyuzhnyy V. L., Kalyuzhnyy A. V., Pakholko S. A. Issledovaniye protsessa otbortovki kruglykh otverstiy profilirovannoy listovoy zagotovki. URL: file:///C:/ Users /anato /Downloads/ MGRP 201459.pdf (data zvernennya: 29.05.2021). [in Russian].
 Kalyuzhnyy O. V.,. Vplyv koefitsiyenta vidbortuvannya na sylovi rezhymy i yakistʹ vyrobiv pry vidbortuvanni kruhlykh otvoriv v tradytsiyniy ta v zprofilʹovaniy lystoviy zahotovtsi . URL: http://repository.kpi.kharkov.ua/bitstream/KhPI-Press/10153/1/vestnikHPI201246KaliuzhnyiVplyvkoef fitsienta.pdf (data zvernennya: 28.05.2021). [in Ukrainian].
 Kalyuzhnyy O. V., Pakholko A. S. Sylovi rezhymy ta formozmina metalu pry vidbortuvanni otvoriv u poperednʹo zprofilʹovaniy zahotovtsi v matrytsi z riznym radiusom zaokruhlennya. URL: http://dspace.kntu.kr.ua/jspui/bitstream/123456789/8937/1/THSHlabrab2019.pdf(data zvernennya: 31.05.2021). [in Ukrainian].
 Shalamov P. V. Geometriya i prochnost' otverstiy pod rez'bu, obrazovannykh vrashchayushchimsya puansonom, v tonkolistovykh zagotovkakh. URL: https://docplayer.ru/70081458-Udk-geometriya-i-prochnost-otverstiy-pod-rezbu-obrazovannyh-vrashchayushchimsya-puansonom-v-tonkolistovyh-zagoto vkah.html (data zvernennya: 31.05.2021). [in Russian].
 Sposib vidbortuvannya otvoriv: pat. UA 69344 U Ukrayina. № 69344 zayavl. 18.10.2011; opubl. 25.04.2012, Byul. № 8. [in Ukrainian].
 Ostrovsky A. Y. (2020). Udoskonalennia tekhnolohichnoho protsesu sverdlinnia tonkolystovoho prokatu. Tekhnika Enerhetyka Transport APK, 4(111). 48–54. [in Ukrainian].
 Ostrovsky A. Y. (2021). Modernizatsiia Shablonu Dlia Rozmichannia Lystovykh Zahotovok Vyrobiv Naiposhyrenishykh Prostorovykh Form. Tekhnika Enerhetyka Transport APK, 1(112). 53–59. [in Ukrainian].
131 - Applied Mechanics
132 - Materials Science
133 - Industry engineering
141 - Power engineering, electrical engineering and electromechanics
208 - Agricultural engineering
The magazine "Engineering, Energy, Transport AIC" is included in the list of scientific professional editions of Ukraine on technical sciences
(Category "Б", Order of the Ministry of Education and Science of Ukraine dated 02.07.2020 №886)
Certificate of state registration of mass media: No. 21906-11806 P dated 03/12/2016.
Founder of the journal: Vinnytsia National Agrarian University
Editor-in-chief: Oleksii Tokarchuk - Ph.D., Associate Professor, VNAU (Vinnytsia)
Deputy Editor-in-Chief: Natalia Veselovska - Doctor of Technical Sciences, Full Prof., VNAU (Vinnytsia)
Executive Secretary: Yuriy Polevoda- Ph.D., Associate Professor, VNAU (Vinnytsia)
Members of the Editorial Board:
Tokarchuk O.A. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Veselovska N.R. - Doctor of Technical Sciences, Full Professor, Vinnytsia National Agrarian University
Polevoda Yu.A. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Jordan Todorov Maximov - Doctor of Technical Sciences, Full Professor, Technical University of Gabrovo (Bulgaria)
Bulgakov V.M. - Doctor of Technical Sciences, Full Professor, Acad. NAAS, National University of Life and Environmental Sciences of Ukraine
Hraniak V.F. - Ph.D., Associate Professor, Vinnytsia National Technical University
Ivanchuk Y.V. - Doctor of Technical Sciences, Associate Professor, Vinnytsia National Technical University
Iskovich-Lototsky R.D. - Doctor of Technical Sciences, Full Professor, Vinnytsia National Technical University
Kupchuk I.M. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Sevostianov I.V. - Doctor of Technical Sciences, Full Professor, Vinnytsia National Agrarian University
Spirin A.V. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Tverdokhlib I.V. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Tsurkan A.V. - Doctor of Technical Sciences, Associate Professor, Vinnytsia National Agrarian University
Yaropud V.M. - Ph.D., Associate Professor, Vinnytsia National Agrarian University
Type of publication: journal
Kind of publication: scientific
Publication status: domestic
Year of foundation: 1997
Periodicity: 4 times per year
Volume: 18-20 conv. print. sheet (А4)
ISSN: 2520-6168 (print version), (online version)
Language of publication: (mixed languages) Ukrainian, Russian, English
The sphere of distribution and category of readers: national, foreign, faculty, scientists, entrepreneurs.
The periodical edition is included to the List of scientific professional publications of Ukraine on technical sciences, approved by order of the Ministry of Education and Science of Ukraine in 05.16.2016, No. 515.
The journal "Engineering, Energy, Transport AIC" is included in the "Catalog of Ukrainian Publications".
Subscription to the journal can be issued in each post office. The subscription index is 99720.
It was founded in 1997 under the title "Bulletin of the Vinnitsa State Agricultural Institute." According to the Decree of the Presidium of the Higher Attestation Commission of Ukraine of September 11, 1997, this publication received the status of a professional in which it is allowed to publish the main results of dissertation researches.
In 2001-2014 the journal published under the title “Collection of scientific works of Vinnytsia National Agrarian University. Series: Technical Sciences "(Certificate of State Registration of Mass Media KV No. 16644-5116 PR of 04/30/2010).
Since 2015 journal has title "Engineering, Energy, Transport AIC" (Certificate of State Registration of Mass Media No. 21906-11806 P dated 03/12/2016).