Simulation Based Reduction of the Impact Load Occurring in the Moment of Cutting Edge Entrance in Order to Prolong Tool-Life

Abstract:

High mechanical impact loads in interrupted or inhomogeneous machining processes frequently lead to spontaneous fracture of the cutting edge. Even modern cutting materials cannot provide a combination of high enough hardness and toughness that is capable of preventing this sort of tool failure. Such machining conditions therefore remain difficult and further investigations, aiming to reduce the impact load of the cutting tool in order to enhance tool-life, are necessary. A simulation model of the impact situation, that serves to optimize a force conducting structure with regard to elasticity, damping properties and resulting force peaks, was developed and is presented in this paper. Furthermore measurement devices were composed that are needed for high-resolution recording of impact forces without repercussions and for verification of the elaborated simulation model. It could be shown that mechanical damping of the cutting tool can lead to reduced impact forces on the cutting edge, which in turn should lead to longer tool life.

• Periodical: Advanced Materials Research (Volume 1140)
• Pages: 173-180
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1140.173
• Online since: August 2016
• Authors: Boris Matuschka*, Nikolay Boev, Frederik Zanger, Volker Schulze
• Keywords: Cutting Edge, Damping, Wear

References

[1] Milberg, J., Werkzeugmaschinen-Grundlagen; Zerspantechnik Dynamik Baugruppen Steuerungen, Springer Verlag Berlin Heidelberg New York, München, (1992).

[2] Klocke, F., Fertigungsverfahren Drehen, Fräsen, Bohren, Springer-Verlag Berlin Heidelberg, New York, Aachen, (2008).

[3] Bobrovoskii, V. A., Extending Tool Life by Break-in TEME circuit, Russ. Eng. J., 18, (1966).

[4] Pal D. K., Gupta N. C., Some experimental studies on drill wear in the presence of alternating magnetic field, Inst. Eng. J., 53, (1973).

[5] Mansori, M. E., Reduction of tool wear in metal cutting using external electromotive sources, Elsevier, Vandoeuvre, (2003).

[6] De Cristofaro, S., High-speed micro-milling, Novel coatings for tool wear reduction, International Journal of Machine Tools and Manufacture, Elsevier, Pontedera, (2012).

DOI: 10.1016/j.ijmachtools.2012.07.005

[7] Khan, S., Tool wear/life evaluation when finish turning Inconel 718 using PCBN tooling, 5th CIRP Conference on High Performance Cutting 2012, Elsevier.

DOI: 10.1016/j.procir.2012.04.051