Experimental Study on High-speed Orthogonal Cutting of Unidirectional CFRP Composites

doi:10.3901/JME.2025.07.109

Abstract

Abstract: The orthogonal cutting experiment is a crucial method for understanding material removal mechanisms and validating theoretical models. However, efforts on the orthogonal cutting of unidirectional carbon fiber reinforced composites (UD-CFRPs) has primarily focused on low and medium-low speeds, with existing high-speed experiment platforms being costly and difficult to conduct comprehensive factor analysis experiments. Therefore, a high-speed orthogonal cutting experiment platform capable of reaching speeds up to 31.40 m/s on a classic lathe is established in this study. Various orthogonal cutting experiment are conducted with different blunt radius, rake and relief angles, and cutting speeds, focusing on analyzing the differences in cutting force, machined surface, and subsurface behavior at different speeds and feed. The results indicate that the trends in cutting force and machined surface for different rake, relief angles, and blunt radius are consistent with existing conclusions, with the "speed effect" mainly reflected in the magnitude. However, cutting speed significantly affects subsurface damage behavior, with the maximum fiber deformation angle decreasing from 8.2° to 1.6°. This study provides a simple and reliable experimental method for researching high-speed orthogonal cutting mechanisms, validating theoretical models, and optimizing tool structures for UD-CFRPs.

Key words: high speed orthogonal cutting, UD-CFRPs, cutting force, subsurface damage, machined surface

CLC Number:

TG156

XU Jie, FENG Pingfa, YUE Qizhong, SHANG Kaifeng, WANG Yutian, FENG Feng. Experimental Study on High-speed Orthogonal Cutting of Unidirectional CFRP Composites[J]. Journal of Mechanical Engineering, 2025, 61(7): 109-119.

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