Worcester Polytechnic Institute Electronic Theses and Dissertations Collection

Title page for ETD etd-0109102-140803


Document Typedissertation
Author NameZhou, Li
URNetd-0109102-140803
TitleMachining Chip-Breaking Prediction with Grooved Inserts in Steel Turning
DegreePhD
DepartmentManufacturing Engineering
Advisors
  • Yiming Rong, Advisor
  • Christopher A. Brown, Department Head
  • Richard D. Sisson, Committee Member
  • Mustapha S. Fofana, Committee Member
  • Ning Fang, Committee Member
  • Keywords
  • Chip breaking
  • prediction
  • turning
  • grooved inserts
  • Date of Presentation/Defense2001-12-07
    Availability unrestricted

    Abstract

    Prediction of chip-breaking in machining is an important task for automated manufacturing. There are chip-breaking limits in maching chip-breaking processes, which determine the chip-breaking range. This paper presents a study of chip-breaking limits with grooved cutting tools, and a web-based machining chip-breaking prediction system. Based on the chip-breaking curve, the critical feed rate is modeled through an analysis of up-curl chip formation, and the critical depth of cut is formulated through a discussion of side-curl dominant chip-formation processes. Factors affecting chip-breaking limits are also discussed.

    In order to predict chip-breaking limits, semi-empirical models are established. Although the coefficients that occur in the model are estimated through machining tests, the models are applicable to a broad range of machining conditions. The model parameters include machining conditions, tool geometry, and workpiece material properties. A new web-based machining chip-breaking prediction system is introduced with examples of industrial applications.

    Files
  • zhou.pdf

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