New algorithm for calibration of instantaneous cutting-force coefficients and radial run-out parameters in flat end milling

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture - Tập 221 Số 6 - Trang 1007-1019 - 2007
Min Wan1, W H Zhang1, Guojin Tan1, Guohua Qin1
1School of Mechatronic Engineering, Northwestern Polytechnical University, Shaanxi, People's Republic of China

Tóm tắt

It is well recognized that the cutter run-out appearing in the milling process will cause an uneven redistribution of the instantaneous uncut chip thickness through the cutter flutes and thereby will generate an irregular distribution of the cutting forces in different tooth periods. This work aims to develop a new approach able to identify the cutter radial run-out and cutting-force coefficients in the flat end milling. It is shown that the total cutting forces can be considered as the sum of a nominal component that is independent of the run-out plus a perturbation component induced by the run-out. Mathematical formulations of both components are developed, accounting for the cutting geometry and the radial run-out parameters. Firstly, to calibrate the cutting-force coefficients, a generic procedure is proposed using the instantaneous value of the nominal component instead of the average value. Secondly, considering the fact that the perturbation component of the cutting force depends non-linearly upon the run-out parameters, the identification of run-out parameters is carried out by solving the linearized equation. In the identification procedure, some key techniques such as the calculation of the immersion boundary at any cutting instant and the reasonable selection of the depth of cut are discussed in detail. Finally, based on simulation and experimental results, the validity of the identification approach is demonstrated.

Từ khóa


Tài liệu tham khảo

Budak E., Altintas Y. Flexible milling force model for improved surface error predictions. In Proceedings of the ASME European Joint Conference on Engineering systems design and analysis, Istanbul, Turkey, 1992, PD-Vol. 47–1, pp. 89–94 (American Society of Mechanical Engineers, New York).

10.1016/0890-6955(94)P2628-S

10.1115/1.1828055

10.1016/S0924-0136(00)00803-7

10.1006/jsvi.2000.3144

10.1016/0020-7357(82)90016-6

10.1016/S0890-6955(02)00189-X

10.1016/S0007-8506(07)61927-1

10.1115/1.2831014

10.1016/j.ijmachtools.2003.10.001

10.1016/0020-7357(83)90012-4

10.1115/1.3187077

10.1007/s00170-005-2572-6

10.1115/1.2803631

10.1016/0957-4158(94)00043-Q

10.1016/S0957-4158(96)00038-4

10.1016/S0007-8506(07)62649-3

10.1016/0890-6955(94)90021-3

10.1115/1.2831093

10.1016/S0890-6955(03)00028-2

10.1016/S0890-6955(00)00097-3

10.1016/S0890-6955(02)00137-2

10.1115/1.1826077

10.1115/1.2832712

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Thông tin xuất bản

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture

Tập 221 Số 6

1007-1019

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