https://m2.mtmt.hu/ hun 2026-10-24 23:01 BookChapter 2645024 VALIDATED true WoS: a befoglaló címe: IMETI 2008: INTERNATIONAL MULTI-CONFERENCE ON ENGINEERING AND TECHNOLOGICAL INNOVATION, VOL I, PROCEEDINGS 0 2016-01-07T16:31:24.000+0000 false 2645024 2026-10-16T14:57:05.903+0000 2020-12-16T13:42:46.644+0000 2009-06-10T22:00:00.000+0000 true 10019713 Bachrathy Dániel /api/author/10019713 Author true 10019713 2025-01-11T23:36:06.358+0000 2025-01-11T23:36:06.358+0000 2020-12-16T13:42:46.657+0000 true 10049401 Fülöp Tamás /api/admin/10049401 Admin true 10049401 true false true 25 25 /api/publicationtype/25 PublicationType 2 true 25 BookChapter true 10000312 Conference paper true 25 25 /api/publicationtype/25 PublicationType 2 true 25 BookChapter /api/subtype/10000312 Konferenciaközlemény SubType 228 true 10000312 true 1 /api/category/1 Category true 1 Bachrathy, Dániel Efficient experimental detection of milling stability boundary and the optimal axial immersion for helical mills 7 11 7 5 2008 Vibrations in milling processes may cause poor surface properties and shortens the lifetime of the machine tool. There are two types of these vibrations which are essential. The first is the so-called “chatter” that is a kind of a self- excited vibration caused by the regenerative effect of the machined surface. The chip thickness depends on the current position of the cutting edge and the past position of the previous/neighbouring cutting edge of the mill. Consequently, the governing equation of the model is a time delayed differential equation. In order to avoid this type of vibration, the so-called stability chart must be created as a function of the technological parameters. The second type of vibrations is caused by the periodic non-smooth cutting force. This forced vibration can have large amplitudes at resonant spindle speeds. There are some regions of the technological parameters where large material removal rates can be achieved, while regenerative chatter is also avoided. However, in most cases, forced vibrations can still occur at these parameters even close to resonance. In case of helical tools, we found that this kind of vibration can also be eliminated by using the optimal axial immersion that depends on the helix pitch of the tool and on the spindle speed. In this optimal case, the appropriate component of the Fourier series of the cutting force is zero, thus, resonance is excluded. Measurements were carried out to prove the analytical predictions. A test rig has been designed and manufactured that can be modelled analytically. The work-piece is fixed on a table, which is flexible in a direction perpendicular to the feed motion. The signals of the accelerometers (B&K4397) were detected by Pulse Front-end and Pulse Labshop v11.0 software. To confirm our analytical results, we carried out a series of measurements with constant spindle speeds and increasing axial immersion, where the higher Fourier harmonics of the cutting force excite the system just at its resonant frequency. Instead of making numerous measurements with distinct spindle speeds, we used wedge-shaped work-pieces to speed-up the lengthy experiments. In this way, the axial immersion was increased continuously during the cutting process. So the stability boundary and the optimal axial immersions could be found with a single test at each spindle speed. We found that the vibration amplitudes were significantly reduced in case of the theoretically predicted optimal axial immersions. 2009 bme-pa-migracio-20014-06-20-v01 true true true true true false NONE 2026-10-16 false true 10039288 Szmolyán Mária /api/admin/10039288 Admin true 10039288 1 0 1 0 1 1 1 1 1 1 1 0 0 0 1 0 1 0 1 0 0 6 6 Folyóiratcikk Journal Article 24 1 Könyvrészlet Chapter in Book 25 0 Könyv Book 23 0 Egyéb konferenciaközlemény Conference paper 31 0 Egyéb konferenciakötet Conference proceedings 32 0 Oltalmi formák Protection forms 26 0 Disszertáció Thesis 28 0 Egyéb Miscellaneous 29 0 Alkotás Achievement 22 0 Kutatási adat Research data 33 0 Folyóiratcikk Journal Article 24 0 0 0 Könyvrészlet Chapter in Book 25 0 0 0 Könyv Book 23 0 0 0 Egyéb konferenciaközlemény Conference paper 31 0 0 0 Egyéb konferenciakötet Conference proceedings 32 0 0 0 Oltalmi formák Protection forms 26 0 0 0 Disszertáció Thesis 28 0 0 0 Egyéb Miscellaneous 29 0 0 0 Alkotás Achievement 22 0 0 0 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class="authors"> <img title="Forrásközlemény" style="float: left" src="/frontend/resources/grid/publication-core-icon.png"> <img title="Idézőközlemény" style="float: left" src="/frontend/resources/grid/publication-citation-icon.png"> <div class="autype autype0"> <span class="author-name" mtid="10019713"><a href="/gui2/?type=authors&mode=browse&sel=10019713" target="_blank">Bachrathy Dániel (<span class="authorship-author-name">Bachrathy Dániel</span> <span class="authorAux-mtmt"> műszaki mechanika</span>) </a> </span> <span class="author-affil"><span title="Budapesti Műszaki és Gazdaságtudományi Egyetem">BME</span>/<span title="Gépészmérnöki Kar">GPK</span>/Műszaki Mechanikai Tanszék</span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" mtid="10000019"><a href="/gui2/?type=authors&mode=browse&sel=10000019" target="_blank">Stépán Gábor (<span class="authorship-author-name">Stépán Gábor</span> <span class="authorAux-mtmt"> mechanika</span>) </a> </span> <span class="author-affil"><span title="Budapesti Műszaki és Gazdaságtudományi Egyetem">BME</span>/<span title="Gépészmérnöki Kar">GPK</span>/Műszaki Mechanikai Tanszék</span> </div> </div> <div class="title"><a href="/gui2/?mode=browse&params=publication;2645024" target="_blank">Efficient experimental detection of milling stability boundary and the optimal axial immersion for helical mills</a></div> <div class="InBook"><div class="chapter-in">In:</div> <div class="authors"> <div class="autype autype-1"> <span class="author-name" >Chu HW </span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" >Savoie M </span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" >Ferrer J </span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" >Franco P </span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" >Estrems M </span> (szerk.) </div> </div> <div class="booktitle"><a href="/gui2/?mode=browse&params=publication;2036998" target="_blank">Proceedings of the International Multi-Conference on Engineering and Technological Innovation </a></div> <div class="conference"> Konferencia helye, ideje: <span class="location">Orlando, Amerikai Egyesült Államok <span class="conference-date">2008.06.29. - 2008.07.02.</span> </div> <span class="publishedAt">Orlando: <span class="publishers">International Institute of Informatics and Systematics (IIIS)</span>, <span class="page"> pp 7-11 </span> <span class="year">(2008)</span> </div> <div class="pub-footer"> <span class="language" xmlns="http://www.w3.org/1999/html">Nyelv: Angol | </span> <span class="identifiers"> <span class="id identifier oa_none" title="none"> <a style="color:blue" title="000263828900002" target="_blank" href="https://www.webofscience.com/wos/woscc/full-record/000263828900002"> WoS </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:black" title="84893180567" target="_blank" href="http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-84893180567"> Scopus </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:black" title="http://hdl.handle.net/10890/3549" target="_blank" href="http://hdl.handle.net/10890/3549"> Teljes dokumentum </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:black" title="10890/3549" target="_blank" href="http://hdl.handle.net/10890/3549"> Handle </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:black" title="17825034169227140280" target="_blank" href="http://scholar.Google.com/scholar?hl=en&lr=&cluster=17825034169227140280"> Google scholar </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:black" title="uNz7xSI-X_cJ" target="_blank" href="http://scholar.Google.com/scholar?hl=en&lr=&cluster=uNz7xSI-X_cJ"> Google scholar hash </a> </span> </span> <span class="bookchapter-ids">Befoglaló link(ek):</span> <span class="identifiers"> <span class="id identifier oa_none" title="none"> <span class="isbnOrIssn"> ISBN: </span> <a style="color:black" title="9781934272435" target="_blank" href="https://www.worldcat.org/search?q=isbn%3A9781934272435"> 9781934272435 </a> </span> </span> <div class="publication-citation" style="margin-left: 0.5cm;"> <span title="Nyilvános idézőközlemények összesen, említések nélkül" class="citingPub-count">Nyilvános idéző összesen: 1</span> | Független: 0 | Függő: 1 | Nem jelölt: 0 | WoS jelölt: 1 | Scopus jelölt:&nbsp;1 | WoS/Scopus jelölt:&nbsp;1 | DOI jelölt:&nbsp;1 </div> <div class="publication-citation"> <a target="_blank" href="/api/publication?cond=citations.related;eq;2645024&sort=publishedYear,desc&sort=title"> Idézett közlemények száma: 6 </a> </div> <div class="mtid"><span class="long-pub-mtid">Közlemény: 2645024</span> | <span class="status-data status-VALIDATED"> Egyeztetett </span> <span class="long-book-mtid">Befoglaló: 2036998</span> <span class="oldId">Régi azonosító: 2645024</span> | <span class="oldId">Befoglaló: 2036998</span> Forrás Idéző | <span class="type-subtype">Könyvrészlet ( Konferenciaközlemény ) </span> | <span class="pub-category">Tudományos</span> | <span class="publication-sourceOfData">kézi felvitel</span> </div> <div class="lastModified">Utolsó módosítás: 2020.12.16. 14:42 Fülöp Tamás (BME GPK admin5) </div> <pre class="comment" style="margin-top: 0; margin-bottom: 0;"><u>Megjegyzés</u>: WoS: a befoglaló címe: IMETI 2008: INTERNATIONAL MULTI-CONFERENCE ON ENGINEERING AND TECHNOLOGICAL INNOVATION, VOL I, PROCEEDINGS</pre> </div> </div>