Autor(en): Felinks, Nils
Rinschede, Timo
Biermann, Dirk
Stangier, Dominic
Tillmann, Wolfgang
Fuß, Moritz
Abrahams, Hendrik
Titel: Investigation into deep hole drilling of austenitic steel with advanced tool solutions
Sprache (ISO): en
Zusammenfassung: Deep hole drilling processes for high-alloyed materials are characterised by worn guide pads and chatter vibrations. In order to increase feed rates, process stability and bore quality in STS deep hole drilling, various investigations were carried out with adjustments to the tool. First, a new process chain for the production of tribologically optimised guide pads and their effects on the guide pad shape is described in detail. The results of these studies show that the shape change in the area of the axial run-in chamfer through a micro finishing process leads to a better bore hole quality. Furthermore, the influence of guide pad coating and cooling lubricant on the deep hole drilling process was investigated. In addition, the machining of the austenitic steel AISI 304 is analysed by using a conventional steel boring bar and an innovative carbon fibre reinforced plastic (CFRP)-boring bar. While the conventional drill tube oscillates with different eigenfrequencies, the CFRP-boring bar damps chatter vibrations of the drill head and stabilises the process. Even at higher feed rates up to f = 0.3 mm, it is possible to machine austenitic, difficult-to-cut-materials with significantly reduced vibrations.
Schlagwörter: STS deep hole drilling
Guide pads
Cutting tool coating
CFRP-boring bar
Chatter vibrations
AISI 304
Schlagwörter (RSWK): Spanende Bearbeitung
BTA-Tiefbohren
Spanwerkzeug
Beschichtung
Kohlenstofffaserverstärkter Kunststoff
Bohrgestänge
Ratterschwingung
Edelstahl
URI: http://hdl.handle.net/2003/40943
http://dx.doi.org/10.17877/DE290R-22793
Erscheinungsdatum: 2021-09-13
Rechte (Link): http://creativecommons.org/licenses/by/4.0/
Enthalten in den Sammlungen:Institut für Spanende Fertigung

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