What is it about?
As a result of the material-specific segmented chip formation occurring during the machining of titanium alloys, the tools used can be set into vibration significantly depending on the given process conditions. In addition to an increased tool wear, this often leads to not being able to achieve the required workpiece qualities. With the use of additively manufactured tool holders for turning TiAl6V4, a passive damping of such chip-induced tool vibrations can be realised. The decisive factor is the production of specially structured hollow elements in the tool holder shafts, which can be realised by the additive manufacturing process. The tools' vibration amplitudes were significantly reduced on the one hand due to the resulting vibration-optimised tool design, and on the other hand due to the internal friction of additional filling materials applied into the shafts hollow elements.
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Why is it important?
The investigations presented show that a significant damping of chip formation induced tool vibrations can be achieved by an adapted, additively inner-structured tool design combined with a suitable particle filling of the hollow element.
Perspectives
Further investigations also aim to transfer the knowledge achieved onto the additive manufacturing of HSK63 tool holders to increase the stability limits when milling Al7075. It would also be conceivable to use additive inner-structured, particle-filled elements in the field of clamping technology in order to reduce process-induced component vibrations.
Dr. Ekrem Oezkaya
Turk-Alman Universitesi
Read the Original
This page is a summary of: Vibration Suppression in Turning TiAl6V4 Using Additively Manufactured Tool Holders with Specially Structured, Particle Filled Hollow Elements, Procedia Manufacturing, January 2019, Elsevier,
DOI: 10.1016/j.promfg.2020.02.007.
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