Owing to the advantages like high specific strength, high heat resistance and excellent wear resistance, carbon fiber reinforced polymers (CFRP) are used widely in the aerospace field. Nevertheless, due to shortcomings such as anisotropy and uneven phase distribution, the cutting failure behavior of CFRP includes a series of complex processes like fiber delamination and matrix fracture, which are thus classified as difficult-to-machine materials. In this study, the models for predicting relationships of cutting force with process parameters and with surface roughness are created by model analysis, in order to explore the effects of process parameters (cutting speed, feed rate and cutting depth) on the cutting force and surface roughness. As the results show, the cutting depth has the greatest influence on the cutting force, and an interaction is present among the process parameters regarding their effects on the magnitude of cutting force. Moreover, the effects of cutting forces in three directions on the roughness are also significantly interactive. Regarding the prediction models, the use of cutting force yields more accurate and stable prediction of roughness than the direct use of process parameters.

由于诸如高比强度，高耐热性和优异的耐磨性的优点，碳纤维增强聚合物（CFRP）被广泛用于航空航天领域。然而，由于各向异性和相分布不均等缺点，CFRP的切割失败行为包括一系列复杂的过程，例如纤维分层和基体断裂，因此被归类为难加工材料。在这项研究中，通过模型分析创建了预测切削力与工艺参数和表面粗糙度之间关系的模型，以探讨工艺参数（切削速度，进给速度和切削深度）对切削力和表面的影响粗糙度。结果表明，切削深度对切削力的影响最大，并且工艺参数之间存在相互作用，这些参数对切削力的大小有影响。此外，在三个方向上的切削力对粗糙度的影响也是显着的相互作用。关于预测模型，与直接使用工艺参数相比，使用切削力可以更准确，更稳定地预测粗糙度。