Carbon fiber reinforced polyetheretherketone (CF/PEEK) is an emerging material that is widely used in the automotive and aviation industry due to its high shock resistance, thermostability, and recyclability. However, its dry-machining requirement with an unclear dynamic material removal process limits the machining efficiency and surface quality. To this end, we firstly established a two-dimensional joint probability distribution model of cutting carbon fibers based on the microstructure of CF/PEEK. Compared with previous brittle models, the plastic model is verified to be more consistent with experimental results. A high-speed dry (HSD) milling force model considering carbon fiber distribution is then developed and is proofed with a high prediction accuracy of about 92.6%. With the proposed model, the milling force can be separated into forces of cutting carbon fibers and PEEK matrix, by which the influences of high-speed dry milling process on carbon fibers and PEEK matrix can be analyzed. The results show that carbon fiber distribution exhibits a significant impact on milling force and is more easily affected by milling parameters compared with the PEEK matrix. It is also verified feasible to HSD milling CF/PEEK, and the work gives the guidance of breaking the low-speed machining limits by improving the machining process.

碳纤维增强聚醚醚酮（CF/PEEK）是一种新兴材料，由于其高抗震性、热稳定性和可回收性，被广泛应用于汽车和航空工业。然而，其干式加工要求和不明确的动态材料去除过程限制了加工效率和表面质量。为此，我们首先基于CF/PEEK的微观结构建立了切割碳纤维的二维联合概率分布模型。与之前的脆性模型相比，验证了塑性模型与实验结果更加一致。然后开发了一种考虑碳纤维分布的高速干 (HSD) 铣削力模型，并以约 92.6% 的高预测精度进行了验证。使用建议的模型，铣削力可以分为切割碳纤维和PEEK基体的力，由此可以分析高速干磨工艺对碳纤维和PEEK基体的影响。结果表明，与 PEEK 基体相比，碳纤维分布对铣削力有显着影响，并且更容易受到铣削参数的影响。也验证了HSD铣削CF/PEEK的可行性，并为通过改进加工工艺打破低速加工极限提供了指导。