Analytical Model of Tapered Thread Made by Turning from Different Machinability Workpieces
Oleh Onysko,
Volodymyr Kopei,
Cristian Barz,
Yaroslav Kusyi,
Saulius Baskutis,
Michal Bembenek,
Predrag Dašić,
Vitalii Panchuk
Affiliations
Oleh Onysko
Department of Computerized Mechanical Engineering, Ivano-Frankivsk National Technical University of Oil and Gas, Karpatska Str., No. 15, 76019 Ivano-Frankivsk, Ukraine
Volodymyr Kopei
Department of Computerized Mechanical Engineering, Ivano-Frankivsk National Technical University of Oil and Gas, Karpatska Str., No. 15, 76019 Ivano-Frankivsk, Ukraine
Cristian Barz
North University Centre of Baia Mare, Technical University of Cluj-Napoca, Victor Babes Str., No. 62A, 430083 Baia Mare, Romania
Yaroslav Kusyi
Department of Mechanical Engineering and Transport, Lviv Polytechnic National University, Stepan Bandera Str., No. 12, 79013 Lviv, Ukraine
Saulius Baskutis
Department of Production Engineering, Kaunas University of Technology, 56, Studentu Str., 51424 Kaunas, Lithuania
Michal Bembenek
Department of Manufacturing Systems, Faculty of Mechanical Engineering and Robotics, AGH University of Krakow, 30 Mickiewicza Avenue, 30-059 Krakow, Poland
Predrag Dašić
Engineering Academy of Serbia (IAS), Str. Kneza Miloša 9/IV, 11000 Belgrade, Serbia
Vitalii Panchuk
Department of Computerized Mechanical Engineering, Ivano-Frankivsk National Technical University of Oil and Gas, Karpatska Str., No. 15, 76019 Ivano-Frankivsk, Ukraine
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°.
