This paper focuses on predicting regenerative chatter onset conditions in machining stainless steel. To establish a credible regenerative chatter model, the mass and flexibility of the workpiece are considered and modeled for lateral deformations using the Timoshenko beam theory; the motion of the cutting tool is modeled as a mass-spring-damper system. The varying natural frequencies and dynamic stiffness of the tool-workpiece system during the cutting process are simulated to study the influence of tool position and material loss. The Johnson-Cook (JC) material model is firstly used as the cutting force model for AISI 316L in chatter analysis to understand the influence of tool geometry and cutting parameters. The effect of dynamic bending moment caused by the axial component of the cutting force is also considered for the first time. Simulations were conducted to understand the influence of tool geometry and cutting parameters on chatter onset conditions. Experiments were carried out to verify the proposed approach on three types of cutting tools.

本文着重于预测加工不锈钢时发生再生颤振的条件。为了建立可靠的再生颤振模型，使用 Timoshenko 梁理论考虑和建模工件的质量和柔韧性，并模拟横向变形；切削刀具的运动被建模为质量-弹簧-阻尼器系统。模拟切削过程中刀具-工件系统变化的固有频率和动态刚度，以研究刀具位置和材料损失的影响。Johnson-Cook (JC) 材料模型首先用作 AISI 316L 的切削力模型，用于颤振分析，以了解刀具几何形状和切削参数的影响。还首次考虑了切削力轴向分量引起的动态弯矩的影响。进行模拟以了解刀具几何形状和切削参数对颤振发生条件的影响。进行了实验以验证在三种类型的切削刀具上提出的方法。