Two patterns of chip curl, namely up- and side-curl, have been widely recognized in machining operations. This paper presents the third pattern of chip curl that is called lateral-curl. The rotating axis of chip lateral-curl is perpendicular to the rotating axes of up- and side-curl. The essential differences are illustrated between the chip lateral-curl concept and the “chip-twisting” concept presented in other related studies. Based on an analytical vector analysis, a new kinematic characterization is presented for the natural (or born) lateral-curl of the chip that is associated with flat-faced tool machining. It is demonstrated that chip forms (or shapes) can be determined by four governing variables: the chip up-, lateral-, and side-curl radii and the chip side-flow angle. A method to indirectly measure the chip lateral-curl radius is presented. The effect of chip lateral-curl on chip forms is investigated through cutting tests, theoretical analysis, and computer simulations.
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August 2002
Technical Papers
Kinematic Characterization of Chip Lateral-Curl—The Third Pattern of Chip Curl in Machining
Ning Fang, Assistant Professor, Mem. ASME
Ning Fang, Assistant Professor, Mem. ASME
Department of Mechanical and Aerospace Engineering, Utah State University, Logan, Utah 84322-4130
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Ning Fang, Assistant Professor, Mem. ASME
Department of Mechanical and Aerospace Engineering, Utah State University, Logan, Utah 84322-4130
Contributed by the Manufacturing Engineering Division for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received February 2001; Revised November 2001. Associate Editor: A. Shih.
J. Manuf. Sci. Eng. Aug 2002, 124(3): 667-675 (9 pages)
Published Online: July 11, 2002
Article history
Received:
February 1, 2001
Revised:
November 1, 2001
Online:
July 11, 2002
Citation
Fang, N. (July 11, 2002). "Kinematic Characterization of Chip Lateral-Curl—The Third Pattern of Chip Curl in Machining ." ASME. J. Manuf. Sci. Eng. August 2002; 124(3): 667–675. https://doi.org/10.1115/1.1468225
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