Results of a study investigating a skew rolling process for elongated axisymmetric parts are presented. Despite the fact that the skew rolling technique for producing such parts was developed and implemented in the mid-twentieth century, there are no studies on this problem. The first part of this paper presents the results of FEM modelling of skew rolling stepped axles and shafts (solid and hollow). The FEM analysis was performed using the MSC Simufact Forming software. The numerical simulation involved the determination of metal flow patterns, the analysis of thermal parameters of the material during rolling, and the prediction of cracking by the Cockcroft-Latham ductile fracture criterion. Force parameters of rolling solid and hollow parts were also determined. The aim of the FEM analysis was to determine initial design assumptions and parameters for the development of the skew rolling mill. Later on in the paper, a design solution of a CNC skew rolling mill for rolling parts based on their envelope profile is proposed. FEM strength test results of a mill stand, obtained with MSC. NASTRAN, are presented. Finally, the performance test results of the constructed rolling mill are presented. The experiments involved rolling real stepped shafts that were modelled numerically. Obtained results show that the proposed skew rolling method has considerable potential. The designed and constructed rolling mill can be used to perform the rolling process according to the proposed method, with the tool and material kinematics being controlled based on the set parameters of a workpiece envelope.

提出了研究细长轴对称零件的偏斜轧制过程的研究结果。尽管在二十世纪中叶已经开发并实施了用于生产这种零件的斜轧技术，但是对此问题还没有研究。本文的第一部分介绍了偏斜滚动阶梯轴和轴（实心和空心）的有限元建模结果。使用MSC Simufact Forming软件进行FEM分析。数值模拟包括确定金属流型，分析轧制过程中材料的热参数以及根据Cockcroft-Latham韧性断裂准则预测开裂。还确定了轧制实心和空心零件的力参数。有限元分析的目的是确定斜轧机开发的初始设计假设和参数。在本文的后面，提出了一种基于包络轮廓的，用于轧制零件的CNC斜轧机的设计解决方案。用MSC获得的轧机机架的FEM强度测试结果。介绍了NASTRAN。最后，给出了所建轧机的性能测试结果。实验涉及滚动实际的步进轴，并对其进行数值建模。所得结果表明，所提出的斜轧方法具有很大的潜力。设计和建造的轧机可用于根据所提出的方法进行轧制过程，并根据工件包络线的设定参数控制工具和材料运动学。