Experimental research of technological elastic deformations of the central holes of gears

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Abstract

The research experimentally investigates the occurrence of technological elastic deformations of the central holes of gears of low technological rigidity (non-rigid gears) caused by their fixation in 3-cam self-centering cartridges. The authors present an experimental comparison of the attachment scheme by the involute with the scheme by the external diameter. Moreover, the graphs of distortion of the hole shape from roundness as a function of the torque applied to the wrench handle were plotted. The least squares method was used to confirm the assumed linear dependence of the graphs of hole shape distortion from roundness as a function of the tightening torque applied to the wrench handle. The authors compare the results obtained by the experiment with the obtained earlier using computer modeling, the adequacy of computer models and the reliability of the experimental results. Experimentally it was determined that at fixing by involute there is on 30,23 % less value of hole shape distortion from roundness in comparison with the scheme of fixing by external diameter. As a result, the scheme of fixing by involute with a gear of low technological rigidity is the best in terms of hole shape distortion from roundness in comparison with the scheme of fixing by external diameter.

The scientific novelty is to investigate the influence of clamping forces on the hole shape distortion of a gear of small technological rigidity when fixed by its external diameter and involute in a 3-cam self-centring chuck. The resulting data allows scientifically justifying assignment of parameters of clamping devices in the production of gears of small technological stiffness used in aeronautical vehicles.

About the authors

Alexander S. Serkov

Omsk State Technical University

Author for correspondence.
Email: Sanya_93@bk.ru
SPIN-code: 8065-4788

Assistant of Mechanical Engineering Technology Department

Russian Federation, Omsk, Mira Ave., 11, 644050

Valery V. Derkach

Omsk State Technical University

Email: Altair_73@mail.ru
SPIN-code: 3504-7789

Candidate of Technical Sciences, Associate Professor of Mechanical Engineering Technology Department

Russian Federation, Omsk, Mira Ave., 11, 644050

Stepan V. Mikhailenko

Omsk State Technical University

Email: Stepan_01.01@mail.ru
ORCID iD: 0000-0002-6806-9915
SPIN-code: 7414-6496

Assistant of Metal Cutting Machines and Tools Department

Russian Federation, Omsk, Mira Ave., 11, 644050

Lyubov’ B. Serkova

Omsk State Technical University

Email: Lubashka_2010@mail.ru
ORCID iD: 0000-0001-5918-2476
SPIN-code: 1236-8615

Senior Lecturer of Oil and Gas Engineering, Standardization and Metrology Department

Russian Federation, Omsk, Mira Ave., 11, 644050

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