Analytical modelling of parallel multidirectional cutting of slender shafts

作者：Wei Cai, Jingyang Xiang, Guojun Dong, Kee‐hung Lai, Marian Wiercigroch · 发表于：International Journal of Mechanical Sciences · 年份：2025 · DOI：10.1016/j.ijmecsci.2025.110024 · 被引用次数：11 · 研究领域：Advanced machining processes and optimization、Engineering Technology and Methodologies、Manufacturing Process and Optimization

• A concept of the parallel multidirectional turning is proposed. • An analytical model for the parallel multidirectional turning is established. • Effects of process parameters on forces, temperature, power, and machining error are analyzed. Slender shafts have wide application on the aerospace, automotive and medical devices. However, they are prone to bending deformation during cutting process due to their low rigidity, resulting in poor machining accuracy and efficiency. A parallel multidirectional cutting (PMC) method is proposed using two tools to simultaneously cut the workpiece in forward or reverse directions contributing to overcome the problem of large deflections of these shafts. The main concept and PMC shared and unshared cutting modes are elucidated. An analytical model for PMC is established including chip geometry model, cutting force model and workpiece deflection feedback model. Given tool geometry, feed and depth of cut, chip load is accurately calculated using cutting edge discretization. The Johnson-Cook constitutive model is used to determine shear stress and shear force on the primary shear plane, and therefore the three-dimensional cutting force is obtained. The force condition of the workpiece is analysed under two clamping methods and the deformation of the workpiece is calculated and feed back into the model. On this basis, the influencing mechanism of cutting force, cutting power, cutting temperature and machining error of PMC is explored under di...