Dynamic effects on cutting forces with highly positive versus highly negative cutting edge geometries

• Published in: International journal on interactive design and manufacturing Vol. 13; no. 2; pp. 557 - 565
• Main Authors: Agic, A., Eynian, M., Ståhl, J.-E., Beno, T.
• Format: Journal Article
• Language: English
• Published: Paris Springer Paris 01.06.2019; Springer Nature B.V
• Subjects: CAE) and Design; Computer-Aided Engineering (CAD; Cutting edge geometry; Cutting force; Cutting parameters; Electronics and Microelectronics; Engineering; Engineering and Technology; Engineering Design; Experiments; Fourier transforms; Frequency spectrum; Geometry; Industrial Design; Instrumentation; Manufacturing and materials engineering; Maskinteknik; Mechanical Engineering; Milling; Original Paper; Pallets; Production Technology; Produktions- och materialteknik; Produktionsteknik; RMS; Teknik; Tribologi (ytteknik omfattande friktion, nötning och smörjning); Tribology; Frequency spectrum; RMS; Cutting edge geometry; Milling; Cutting force
• ISSN: 1955-2513; 1955-2505; 1955-2505
• DOI: 10.1007/s12008-018-0513-5

Understanding the influence of the cutting edge geometry on the development of cutting forces during the milling process is of high importance in order to predict the mechanical loads on the cutting edge as well as the dynamic behavior on the milling tool. The work conducted in this study involves the force development over the entire engagement of a flute in milling, from peak force during the entry phase until the exit phase. The results show a significant difference in the behavior of the cutting process for a highly positive versus a highly negative cutting edge geometry. The negative edge geometry gives rise to larger force magnitudes and very similar developments of the tangential and radial cutting force. The positive cutting edge geometry produces considerably different developments of the tangential and radial cutting force. In case of positive cutting edge geometry, the radial cutting force increases while the uncut chip thickness decreases directly after the entry phase; reaching the peak value after a certain delay. The radial force fluctuation is significantly higher for the positive cutting edge geometry. The understanding of such behavior is important for modelling of the milling process, the design of the cutting edge and the interactive design of digital applications for the selection of the cutting parameters.