Reduction of the influence on machining surface caused by tool non-repeatable run-out of rolling bearing spindle for machine tools (Development of an excitation system)

In recent years, the surface quality requirement in die and mold has become severer. In addition, die and mold with surface structure are increasing and it makes polishing process difficult. In order to realize mirror surface finish by cutting, it is necessary to reduce influence of tool non-repeata...

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Main Authors: Yuta SHOWA, Hayato YOSHIOKA, Hidenori SHINNO
Format: Article
Language:Japanese
Published: The Japan Society of Mechanical Engineers 2020-03-01
Series:Nihon Kikai Gakkai ronbunshu
Subjects:
Online Access:https://www.jstage.jst.go.jp/article/transjsme/86/884/86_19-00450/_pdf/-char/en
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author Yuta SHOWA
Hayato YOSHIOKA
Hidenori SHINNO
author_facet Yuta SHOWA
Hayato YOSHIOKA
Hidenori SHINNO
author_sort Yuta SHOWA
collection DOAJ
description In recent years, the surface quality requirement in die and mold has become severer. In addition, die and mold with surface structure are increasing and it makes polishing process difficult. In order to realize mirror surface finish by cutting, it is necessary to reduce influence of tool non-repeatable run-out (NRRO) on machining surface. Rolling bearings are widely used for machine tools, NRRO of a spindle due to rolling element revolution depends on spindle conditions such as rotational speed, temperature, and cutting load. In order to reduce influence of NRRO on workpiece surface, a prototype of an excitation system which can generate counter excitation force is proposed in this paper. The tool run-out during machining was measured and the results confirmed that the machined surface was affected by this NRRO. In addition, it was confirmed that NRRO has multiple peaks in frequency domain and the state of each peak changes even at the same spindle speed. After developing an excitation system with a voice coil motor, it was confirmed effectiveness of the system that can reduce NRRO component from measured tool run-out signal.
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spelling doaj.art-723f8c962c4d496a93ccdb47fec6cf032022-12-22T04:16:11ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612020-03-018688419-0045019-0045010.1299/transjsme.19-00450transjsmeReduction of the influence on machining surface caused by tool non-repeatable run-out of rolling bearing spindle for machine tools (Development of an excitation system)Yuta SHOWA0Hayato YOSHIOKA1Hidenori SHINNO2Makino Milling Machine CO., LTD.Laboratory for Future Interdisciplinary Research of Science and Technology, Tokyo Institute of TechnologyLaboratory for Future Interdisciplinary Research of Science and Technology, Tokyo Institute of TechnologyIn recent years, the surface quality requirement in die and mold has become severer. In addition, die and mold with surface structure are increasing and it makes polishing process difficult. In order to realize mirror surface finish by cutting, it is necessary to reduce influence of tool non-repeatable run-out (NRRO) on machining surface. Rolling bearings are widely used for machine tools, NRRO of a spindle due to rolling element revolution depends on spindle conditions such as rotational speed, temperature, and cutting load. In order to reduce influence of NRRO on workpiece surface, a prototype of an excitation system which can generate counter excitation force is proposed in this paper. The tool run-out during machining was measured and the results confirmed that the machined surface was affected by this NRRO. In addition, it was confirmed that NRRO has multiple peaks in frequency domain and the state of each peak changes even at the same spindle speed. After developing an excitation system with a voice coil motor, it was confirmed effectiveness of the system that can reduce NRRO component from measured tool run-out signal.https://www.jstage.jst.go.jp/article/transjsme/86/884/86_19-00450/_pdf/-char/ennrrorolling bearingspindlemachine toolsexcitationmachining surfacevoice coil motor
spellingShingle Yuta SHOWA
Hayato YOSHIOKA
Hidenori SHINNO
Reduction of the influence on machining surface caused by tool non-repeatable run-out of rolling bearing spindle for machine tools (Development of an excitation system)
Nihon Kikai Gakkai ronbunshu
nrro
rolling bearing
spindle
machine tools
excitation
machining surface
voice coil motor
title Reduction of the influence on machining surface caused by tool non-repeatable run-out of rolling bearing spindle for machine tools (Development of an excitation system)
title_full Reduction of the influence on machining surface caused by tool non-repeatable run-out of rolling bearing spindle for machine tools (Development of an excitation system)
title_fullStr Reduction of the influence on machining surface caused by tool non-repeatable run-out of rolling bearing spindle for machine tools (Development of an excitation system)
title_full_unstemmed Reduction of the influence on machining surface caused by tool non-repeatable run-out of rolling bearing spindle for machine tools (Development of an excitation system)
title_short Reduction of the influence on machining surface caused by tool non-repeatable run-out of rolling bearing spindle for machine tools (Development of an excitation system)
title_sort reduction of the influence on machining surface caused by tool non repeatable run out of rolling bearing spindle for machine tools development of an excitation system
topic nrro
rolling bearing
spindle
machine tools
excitation
machining surface
voice coil motor
url https://www.jstage.jst.go.jp/article/transjsme/86/884/86_19-00450/_pdf/-char/en
work_keys_str_mv AT yutashowa reductionoftheinfluenceonmachiningsurfacecausedbytoolnonrepeatablerunoutofrollingbearingspindleformachinetoolsdevelopmentofanexcitationsystem
AT hayatoyoshioka reductionoftheinfluenceonmachiningsurfacecausedbytoolnonrepeatablerunoutofrollingbearingspindleformachinetoolsdevelopmentofanexcitationsystem
AT hidenorishinno reductionoftheinfluenceonmachiningsurfacecausedbytoolnonrepeatablerunoutofrollingbearingspindleformachinetoolsdevelopmentofanexcitationsystem