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Open AccessArticle

Dynamic Torque Limitation Principle in the Main Line of a Mill Stand: Explanation and Rationale for Use

Department of Mechatronics and Automation, South Ural State University (National Research University), Chelyabinsk 454080, Russia
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Machines 2019, 7(4), 76; https://doi.org/10.3390/machines7040076
Received: 22 October 2019 / Revised: 4 December 2019 / Accepted: 5 December 2019 / Published: 6 December 2019
(This article belongs to the Special Issue Selected Papers from the ICIEAM 2019 Conference)
This paper substantiates why it is necessary to limit the dynamic loads in stand shafts when closing angular gaps. The paper is a feasibility study of a concept developed specifically to limit each of the factors that affect amplitude of the dynamic torque; limitations applied are determined on a case-by-case basis. The research team studied the components of elastic torque in a dual-mass electromechanical system of Mill 5000 caused by vibrations arising from the elasticity of transmission as well as from the vibrations caused by elastic collision itself. It is shown that the lowest possible pre-acceleration is necessary for decreasing the dynamic coefficient at a near-nominal load torque. A principle of limiting dynamic loads when closing an angular gap is proposed, which implies collecting tachograms of an electric drive subjected to positive or negative acceleration before and after the fed metal is captured. The research team has developed drive control principles to implement this approach. The recommendation is to upgrade the electric drives of the reversing stand in Mill 5000. View Full-Text
Keywords: plate rolling mill; spindle connection; angular clearance; dynamic loads; limitation plate rolling mill; spindle connection; angular clearance; dynamic loads; limitation
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Gasiyarov, V.; Khramshin, V.; Voronin, S.; Lisovskaya, T.; Gasiyarova, O. Dynamic Torque Limitation Principle in the Main Line of a Mill Stand: Explanation and Rationale for Use. Machines 2019, 7, 76.

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