ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
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8
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vol 63 / August, 2020
Article

DOI 10.17586/0021-3454-2018-61-4-360-367

UDC 621.8.025.7, 620.178.169, 620.178.04, 620.186.12

TECHNOLOGICAL FEATURES OF NITROGENING THREAD SURFACES OF CRITICAL PARTS OF ELECTROMECHANICAL DRIVE

A. . Ivanenko
ITMO University, Department of Technogenic Security Systems and Technologies; Post-Graduate Student


I. . Tulkova
Diakont JSC, Department of serial drive technology;; Director of the Department


. . Uvarov
ITMO University, Department of Technogenic Security Systems and Technologies; Senior Lecturer


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Abstract. The process of internal thread surface ion-plasma nitriding of nut, which is a part of nut-roller screw, is considered. Ion-plasma nitriding is used to harden the surface layer of a part after machining, this allows to obtain a surface of the required quality without additional grinding required when traditional methods of bulk hardening are applied. Technological regimes are selected, and additional requirements are imposed on the workpiece material during nitriding of threaded surfaces that, as a rule, are not subjected to surface hardening treatment. The complex of developed constructive and technological measures provides the resource of the roll-screw transmission more than five times higher than that of the models presented in the world market, with a significant reduction in the cost of production due to the elimination of long and expensive grinding processing from the technology.  
Keywords: nut roller screw, electromechanical actuator, ion-plasma nitriding, thread surface

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