Investigating the effect of sculptured surface curvatures on milling forces

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GHORBANI MOHAMMAD; Movahhedy Mohammad Reza

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Journal: IRANIAN JOURNAL OF MANUFACTURING ENGINEERING Year:2019 | Volume:6 | Issue:6 Page(s): 34-43

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Title

Investigating the effect of sculptured surface curvatures on milling forces

Author(s)

GHORBANI MOHAMMAD | Movahhedy Mohammad Reza | Issue Writer Certificate

Keywords

Sculptured Surface

Ball-end Mill

Surface Curvatures

Milling

Abstract

In the Milling of Sculptured Surfaces, cutting forces and the final part accuracy can be affected by Surface Curvatures. In this paper, an analytical formulation containing the explicit form of the principal curvatures of surface is developed for extracting the engagement boundaries between a Ball-end Mill and a Sculptured Surface, and the effect of Surface Curvatures on the Milling forces is investigated. To this end, first, a mechanistic cutting force model is presented for calculating the Milling forces acting on a ball-end tool. Orthogonal to oblique cutting technique is used to calculate the cutting force coefficients, and the model is verified by comparing the predicted Milling forces with the existing ones in the literature. Then, parametric studies are performed to investigate the effects of cutting depth and Surface Curvatures on the Milling forces. The results show that at a constant cutting depth, the Milling forces are more influenced by the Surface Curvatures at the concave and saddle regions of the surface in comparison with the convex regions. Furthermore, for constant values of curvatures, the effect of Surface Curvatures on the Milling forces increases as the cutting depth decreases. In other words, as the cutting depth decreases, neglecting the effect of Surface Curvatures results in more relative error in the calculated Milling forces. Furthermore, the obtained results show that the surface curvature perpendicular to the feed direction has more influence on the Milling forces than the curvature in the feed direction.

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APA: Copy

GHORBANI, MOHAMMAD, & Movahhedy, Mohammad Reza. (2019). Investigating the effect of sculptured surface curvatures on milling forces. IRANIAN JOURNAL OF MANUFACTURING ENGINEERING, 6(6 ), 34-43. SID. https://sid.ir/paper/268261/en

Vancouver: Copy

GHORBANI MOHAMMAD, Movahhedy Mohammad Reza. Investigating the effect of sculptured surface curvatures on milling forces. IRANIAN JOURNAL OF MANUFACTURING ENGINEERING[Internet]. 2019;6(6 ):34-43. Available from: https://sid.ir/paper/268261/en

IEEE: Copy

MOHAMMAD GHORBANI, and Mohammad Reza Movahhedy, “Investigating the effect of sculptured surface curvatures on milling forces,” IRANIAN JOURNAL OF MANUFACTURING ENGINEERING, vol. 6, no. 6 , pp. 34–43, 2019, [Online]. Available: https://sid.ir/paper/268261/en

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