Document Type dissertation Author Name Zhou, Li URN etd-0109102-140803 Title Machining Chip-Breaking Prediction with Grooved Inserts in Steel Turning Degree PhD Department Manufacturing 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/Defense 2001-12-07 Availability unrestricted
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.
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