TY - GEN
T1 - Force model for chip breaking in orthogonal machining
AU - Ganapathy, B. K.
AU - Jawahir, I. S.
PY - 1993
Y1 - 1993
N2 - The present tendency towards increased automation of metal cutting operations has resulted in a great emphasis on the monitoring and prediction of chip breakability. In order to better understand the mechanism of chip breaking, it is first necessary to have quantitative information about all the forces acting on the chip, within a chip breaking cycle. Conventional cutting force models do not permit such a study, since they assume a continuous mode of chip formation, where the contact action of the free-end of the chip is ignored in all analyses. The new cutting force model proposed in this work is applicable to the problem of two-dimensional chip breaking in orthogonal machining. A methodology to determine the forces acting on the chip, including the contact force developed due to the free-end of the chip touching the workpiece, has been formulated using both experimental and estimation techniques. Orthogonal cutting tests were conducted to obtain two dimensional chip breaking. The experimentally obtained cutting forces show a good correlation with the estimated cutting forces. Using the proposed methodology, the forces acting on the chip were determined. Results show that these forces, while exhibiting cyclic variations, enable the identification of the chip breaking event.
AB - The present tendency towards increased automation of metal cutting operations has resulted in a great emphasis on the monitoring and prediction of chip breakability. In order to better understand the mechanism of chip breaking, it is first necessary to have quantitative information about all the forces acting on the chip, within a chip breaking cycle. Conventional cutting force models do not permit such a study, since they assume a continuous mode of chip formation, where the contact action of the free-end of the chip is ignored in all analyses. The new cutting force model proposed in this work is applicable to the problem of two-dimensional chip breaking in orthogonal machining. A methodology to determine the forces acting on the chip, including the contact force developed due to the free-end of the chip touching the workpiece, has been formulated using both experimental and estimation techniques. Orthogonal cutting tests were conducted to obtain two dimensional chip breaking. The experimentally obtained cutting forces show a good correlation with the estimated cutting forces. Using the proposed methodology, the forces acting on the chip were determined. Results show that these forces, while exhibiting cyclic variations, enable the identification of the chip breaking event.
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M3 - Conference contribution
AN - SCOPUS:0027840170
SN - 0791810291
T3 - American Society of Mechanical Engineers, Production Engineering Division (Publication) PED
SP - 461
EP - 674
BT - Manufacturing Science and Engineering
A2 - Ehmann, K.F.
T2 - Proceedings of the 1993 ASME Winter Annual Meeting
Y2 - 28 November 1993 through 3 December 1993
ER -