Cutting Thickness of High Speed Ball-End Milling Hardened Steel

Shu Cai Yang; Bin Jiang; H.Y. Li; M.L. Zheng; S.J. Wang

doi:10.4028/www.scientific.net/AMR.426.24

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Cutting Thickness of High Speed Ball-End Milling Hardened Steel

Abstract:

In order to solve the problem of machined surface damage and machining efficiency decline that caused by the decrease of effective cutting thickness in high speed ball-end milling hardened steel, using high speed cutting adiabatic shearing model, analyzed the adiabatic shearing deformation on hardened steel, and proposed the criterion of chip separating position. Analyzed the force in the transformation process from cutting to plowing, the influence of cutter deformation on cutting thickness was studied, and established the minimum cutting thickness model. Having done finite element analysis of cutter and experiment of high speed milling hardened steel, the validity of the minimum cutting thickness model was proved. The results show that cutting thickness changes from small to large, and then from large to small under the influence of cutting trajectory and tool edge radius. The deformation of cutter leads to the increase of the minimum cutting thickness, and further enhances chip thickness thinning effect. High feed can compensate cutting thickness thinning and the minimum cutting thickness model provides an effective way to restrain the damage of machined surface and cutter caused by cutter plowing.

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Periodical:

Advanced Materials Research (Volume 426)

Pages:

24-27

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.426.24

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Online since:

January 2012

Authors:

Shu Cai Yang, Bin Jiang, H.Y. Li, M.L. Zheng, S.J. Wang

Keywords:

Ball-End Milling Cutter, Cutting Thickness, Hardened Steel, High Speed Milling

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