Title: Characterisation for differential wear between left and right flank faces in turning large pitch internal thread

Authors: B. Jiang; T. Xu; Z. Li; Y.P. Gu; T.T. He

Addresses: National and Local United Engineering Laboratory of High Efficiency Cutting and Tools, Harbin University of Science and Technology, Harbin 150080, China ' National and Local United Engineering Laboratory of High Efficiency Cutting and Tools, Harbin University of Science and Technology, Harbin 150080, China ' National and Local United Engineering Laboratory of High Efficiency Cutting and Tools, Harbin University of Science and Technology, Harbin 150080, China ' National and Local United Engineering Laboratory of High Efficiency Cutting and Tools, Harbin University of Science and Technology, Harbin 150080, China ' National and Local United Engineering Laboratory of High Efficiency Cutting and Tools, Harbin University of Science and Technology, Harbin 150080, China

Abstract: In turning large pitch internal thread, there are obvious differences between the wear on the same tool's left and right flank faces, which decrease the tool life and the consistency of machining surface quality of threads. Force equations of tool's left and right cutting edges are used to reveal their differences in mechanical condition. Adopting axial direction cutting method, the flank wear experiment is carried to obtain its characteristics of left and right cutting edges and the time-domain signals of tool vibration. During the formation of differential wear of left and right flank faces, the stress state and the vibration of cutting tool are analysed. Finally, distribution functions of flank wear widths are established to reveal the change characteristics of wear width along the cutting edge and the cutting stroke and quantitatively describe the wear processes and differences of left and right flank faces.

Keywords: turning; axial stratified cutting; internal thread; large pitch; tool; cutting edge; left flank face; right flank face; differential wear; cutting stroke; cutting edge length; wear width; distribution function.

DOI: 10.1504/IJMMS.2018.095463

International Journal of Mechatronics and Manufacturing Systems, 2018 Vol.11 No.4, pp.325 - 347

Received: 20 Jul 2017
Accepted: 30 Apr 2018
Published online: 05 Oct 2018 *

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