Open AccessTheoretical investigation of the tapered thread joint surface contact pressure in the dependence on the profile and the geometric parameters of the threading turning tool
Author(s) -
Oleh Onysko,
V. Kopey,
Vitalii Panchuk
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/749/1/012007
Subject(s) - thread (computing) , threading (protein sequence) , materials science , contact area , screw thread , structural engineering , mechanical engineering , computer science , geometry , engineering , mathematics , physics , composite material , nuclear magnetic resonance , protein structure
The tapered screw joints are widely used in the formation of the drill string. They consist of two parts - a box and a pin. During the process of screwing box and a pin the contact pressure between their thread surfaces arises, the magnitude of which affects the intensity of wear on these surfaces. For the first time, the authors offer in this work to change the contact area of the thread face by the change in the shape of the cutting edge of the threading turning tool. Previously, in the works of these authors themselves, it was offered to change the shape of the cutting edge exclusively to increase the tightness of the joint. In other works, the justification for changing the geometric parameters of such cutters was offered in order to obtain the possibility of the thread manufacturing from materials with a strength limit of more than 1300 MPa. In this paper an analysis of the influence of the geometric parameters size of the cutter on the value of the contact pressure between the thread surfaces of the box and the pin is carried out. Among above geometric parameters the work height is the most important. As a result of theoretical studies, a certain functional dependence of the contact pressure in the tapered thread joint from the shape of the cutter edge and the magnitude of its work height is obtained.