A THERMAL ANALYSIS OF THE THREADED SPINDLE BEARING ASSEMBLY IN NUMERICALLY CONTROLLED MACHINE TOOLS

A THERMAL ANALYSIS OF THE THREADED SPINDLE BEARING ASSEMBLY IN NUMERICALLY CONTROLLED MACHINE TOOLS

A threaded gear in machine tools is a mechanical actuator that converts rotary motion into linear one of the machine axis using a recirculating ball-nut. It provides positioning accuracy, uniform motion, silent operation, reduced wear and an increased service life. The bearing assembly of the thread...

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Main Authors: Vladislav Krstić, Dragan Milčić, Miodrag Milčić
Format: Article
Language:English
Published: University of Niš 2018-08-01
Series:Facta Universitatis. Series: Mechanical Engineering
Online Access:http://casopisi.junis.ni.ac.rs/index.php/FUMechEng/article/view/2550
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spelling doaj-27a8d6dc5d3f4edf843f51f4c20451342020-11-25T02:11:21ZengUniversity of NišFacta Universitatis. Series: Mechanical Engineering0354-20252335-01642018-08-0116226127210.22190/FUME170512022K1772A THERMAL ANALYSIS OF THE THREADED SPINDLE BEARING ASSEMBLY IN NUMERICALLY CONTROLLED MACHINE TOOLSVladislav Krstić0Dragan Milčić1Miodrag Milčić2Faculty of Mechanical Engineering, University of NišFaculty of Mechanical Engineering, University of NišFaculty of Mechanical Engineering, University of NišA threaded gear in machine tools is a mechanical actuator that converts rotary motion into linear one of the machine axis using a recirculating ball-nut. It provides positioning accuracy, uniform motion, silent operation, reduced wear and an increased service life. The bearing assembly of the threaded spindles should provide load transfer (cutting forces and friction forces) while maintaining high guiding accuracy. Due to a high number of the threaded spindle revolutions and the presence of tension in the bearing and a high axial force originating from the cutting and friction forces, the increased heat load due to friction in the bearings is normally expected. For this reason, this paper presents a thermal analysis of the bearing assembly of the threaded spindle which is realized via an axial ball bearing with angular contact of the ZKLN type, produced by the German manufacturer Schaeffler (INA); in other words, a numerical thermal analysis has been performed.http://casopisi.junis.ni.ac.rs/index.php/FUMechEng/article/view/2550
collection DOAJ
language English
format Article
sources DOAJ
author Vladislav Krstić
Dragan Milčić
Miodrag Milčić
spellingShingle Vladislav Krstić
Dragan Milčić
Miodrag Milčić
A THERMAL ANALYSIS OF THE THREADED SPINDLE BEARING ASSEMBLY IN NUMERICALLY CONTROLLED MACHINE TOOLS
Facta Universitatis. Series: Mechanical Engineering
author_facet Vladislav Krstić
Dragan Milčić
Miodrag Milčić
author_sort Vladislav Krstić
title A THERMAL ANALYSIS OF THE THREADED SPINDLE BEARING ASSEMBLY IN NUMERICALLY CONTROLLED MACHINE TOOLS
title_short A THERMAL ANALYSIS OF THE THREADED SPINDLE BEARING ASSEMBLY IN NUMERICALLY CONTROLLED MACHINE TOOLS
title_full A THERMAL ANALYSIS OF THE THREADED SPINDLE BEARING ASSEMBLY IN NUMERICALLY CONTROLLED MACHINE TOOLS
title_fullStr A THERMAL ANALYSIS OF THE THREADED SPINDLE BEARING ASSEMBLY IN NUMERICALLY CONTROLLED MACHINE TOOLS
title_full_unstemmed A THERMAL ANALYSIS OF THE THREADED SPINDLE BEARING ASSEMBLY IN NUMERICALLY CONTROLLED MACHINE TOOLS
title_sort thermal analysis of the threaded spindle bearing assembly in numerically controlled machine tools
publisher University of Niš
series Facta Universitatis. Series: Mechanical Engineering
issn 0354-2025
2335-0164
publishDate 2018-08-01
description A threaded gear in machine tools is a mechanical actuator that converts rotary motion into linear one of the machine axis using a recirculating ball-nut. It provides positioning accuracy, uniform motion, silent operation, reduced wear and an increased service life. The bearing assembly of the threaded spindles should provide load transfer (cutting forces and friction forces) while maintaining high guiding accuracy. Due to a high number of the threaded spindle revolutions and the presence of tension in the bearing and a high axial force originating from the cutting and friction forces, the increased heat load due to friction in the bearings is normally expected. For this reason, this paper presents a thermal analysis of the bearing assembly of the threaded spindle which is realized via an axial ball bearing with angular contact of the ZKLN type, produced by the German manufacturer Schaeffler (INA); in other words, a numerical thermal analysis has been performed.
url http://casopisi.junis.ni.ac.rs/index.php/FUMechEng/article/view/2550
work_keys_str_mv AT vladislavkrstic athermalanalysisofthethreadedspindlebearingassemblyinnumericallycontrolledmachinetools
AT draganmilcic athermalanalysisofthethreadedspindlebearingassemblyinnumericallycontrolledmachinetools
AT miodragmilcic athermalanalysisofthethreadedspindlebearingassemblyinnumericallycontrolledmachinetools
AT vladislavkrstic thermalanalysisofthethreadedspindlebearingassemblyinnumericallycontrolledmachinetools
AT draganmilcic thermalanalysisofthethreadedspindlebearingassemblyinnumericallycontrolledmachinetools
AT miodragmilcic thermalanalysisofthethreadedspindlebearingassemblyinnumericallycontrolledmachinetools
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