Experimental investigation of hard turning mechanisms by PCBN tooling embedded micro thin film thermocouples

Linwen Li, Bin Li, Xiaochun Li, Kornel Ehmann*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Temperature-distribution measurements in cutting tools during the machining process are extremely difficult and remain an unresolved problem. In this paper, cutting temperature distributions are measured by thin film thermocouples (TFTCs) embedded into Polycrystalline Cubic Boron Nitride (PCBN) cutting inserts in the immediate vicinity of the tool-chip interface. Using these measurements, steady and dynamic phenomena during hard turning as well as the chip morphology and formation process were analyzed based on the cutting temperature distributions in the insert. The relationship between the cutting temperature-field distributions in the PCBN insert and the segmented chip formation is analyzed using temperature-distribution mapping. It is shown that the temperature-distribution in the cutting zone depends on the shearing band distribution in the chip and the thermal transfer rate from the heat generation zone to the cutting tool. Furthermore, it became evident that the material flow stress and the shearing bands greatly affect not only the chip formation morphology but also the cutting temperature field distributions in the cutting zone of the cutting insert.

Original languageEnglish (US)
Title of host publicationASME 2012 International Manufacturing Science and Engineering Conference Collocated with the 40th North American Manufacturing Research Conf. and in Participation with the Int. Conf., MSEC 2012
Pages307-316
Number of pages10
DOIs
StatePublished - Dec 1 2012
EventASME 2012 International Manufacturing Science and Engineering Conference, MSEC 2012 Collocated with the 40th North American Manufacturing Research Conference and in Participation with the International Conference - Notre Dame, IN, United States
Duration: Jun 4 2012Jun 8 2012

Other

OtherASME 2012 International Manufacturing Science and Engineering Conference, MSEC 2012 Collocated with the 40th North American Manufacturing Research Conference and in Participation with the International Conference
CountryUnited States
CityNotre Dame, IN
Period6/4/126/8/12

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

Fingerprint Dive into the research topics of 'Experimental investigation of hard turning mechanisms by PCBN tooling embedded micro thin film thermocouples'. Together they form a unique fingerprint.

  • Cite this

    Li, L., Li, B., Li, X., & Ehmann, K. (2012). Experimental investigation of hard turning mechanisms by PCBN tooling embedded micro thin film thermocouples. In ASME 2012 International Manufacturing Science and Engineering Conference Collocated with the 40th North American Manufacturing Research Conf. and in Participation with the Int. Conf., MSEC 2012 (pp. 307-316) https://doi.org/10.1115/MSEC2012-7262