This paper presents a new predictive model for chip backflow angle in machining with restricted contact grooved tools. This model is derived from the recently established universal slip-line model for machining with restricted contact cut-away tools. A comprehensive definition of the chip back-flow angle is first developed, and based on this, a quantitative analysis of the effect of chip back-flow is presented for the given set of cutting conditions, tool geometry and variable tool-chip interfacial stress state. This model also predicts cutting forces, chip thickness ratio and chip up-curl radius. A full experimental validation of the predictive model involving the use of high speed filming techniques is then presented for chip back-flow angle and this validation provides a range of feasible/prevalent tool-chip interfacial frictional conditions for a given set of input conditions.
|Title of host publication||Manufacturing Engineering|
|Number of pages||8|
|State||Published - 2000|
|Event||ASME 2000 International Mechanical Engineering Congress and Exposition, IMECE 2000 - Orlando, United States|
Duration: Nov 5 2000 → Nov 10 2000
|Name||ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)|
|Conference||ASME 2000 International Mechanical Engineering Congress and Exposition, IMECE 2000|
|Period||11/5/00 → 11/10/00|
Bibliographical noteFunding Information:
This research was funded, in part, by the National Science Foundation Award DMI 9628984. Assistance from Chrysan Industries, Spartan Chemical Company, and the Machine Tool Agile Manufacturing Research Institute is also gratefully recognized. Comments and support from Drs. J. D'Arcy and J. Dasch at GM were most helpful. The ever-insightful input from Prof. W. W. Olson at the Univ. of Toledo in the early stages of this work is also cheerfully acknowledged.
The research support for this work provided by the National Science Foundation (NSF Grant: DMII-9713932) and the Center for Robotics and Manufacturing Systems at the University of Kentucky is gratefully acknowledged.
Copyright © 2000 by ASME.
ASJC Scopus subject areas
- Mechanical Engineering