Frictionally damped tool holder for long projection cutting tools

The machining of complex geometries and deep cavities requires the use of long projecting tool holders. However, due to their high length-to-diameter ratio, these tool holders have a high degree of static and dynamic compliance. High dynamic compliance reduces process stability and thus productivity...

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Bibliographic Details
Published inProduction engineering (Berlin, Germany) Vol. 12; no. 6; pp. 715 - 722
Main Authors Denkena, Berend, Bergmann, Benjamin, Teige, Christian
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.12.2018
Springer Nature B.V
Subjects
Compliance
Cutting parameters
Cutting tools
Dampers
Damping
Dynamic stability
Engineering
Friction
Industrial and Production Engineering
Machine Tool
Machining
Mathematical analysis
Modal analysis
Production
Tool holders
Damping
Process stability
Friction
Tool holder
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Summary:The machining of complex geometries and deep cavities requires the use of long projecting tool holders. However, due to their high length-to-diameter ratio, these tool holders have a high degree of static and dynamic compliance. High dynamic compliance reduces process stability and thus productivity. A new approach to lessen this is to increase the damping of long projecting tool holders by using friction dampers integrated into the tool holder shaft. The mathematical description and experimental testing of large friction-damped tool holders are the subject of this paper. With the aid of experimental modal analysis and cutting tests, the dynamic compliance and maximal cutting depth were determined. Due to the integration of friction segments in the tool holder shaft, the maximal depth of cut could be increased about 75% compared to a reference tool holder with the same diameter and length configuration.
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ISSN:0944-6524
1863-7353
DOI:10.1007/s11740-018-0847-7