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1 Journal of Theoretical and Applied Mechanics

1 2023

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A tool orientation smoothing method for five-axis machining to avoid singularity problems

Cui Chuanhui, Zhu Zhengqing, Chen Shuai, Zheng Qiang, Chai Jinfeng, Li Xiancai

Journal of Theoretical and Applied Mechanics

2023

Vol. 61 nr 1

89--102

In numerically controlled grinding of aeroengine blades, a sharp change in a rotating shaft caused by a singular zone greatly reduces grinding precision and quality. This paper proposes an algorithm to optimize the tool-path that combines optimization of the C-axis rotation angle, a modification to the tool orientation and adjustments to the tool position by taking a four-array machine tool with two rotational axes (B-axis and C-axis) as an example. The algorithm was verified using VERICUT software, furthermore, in machining experiments, the rotation amplitudes of the rotary axis in singular areas was effectively reduced, which ensured grinding quality of blades.