动态激励下多参数对不落轮轮对车削稳定性的影响

为了解决不落轮轮对车床加工过程中车削系统工艺参数的变化直接影响车轮踏面加工的稳定性问题，首先，建立了以动态车削力作为激励下的车削系统动力学模型，分析模型来确定影响不落轮轮对踏面车削稳定性的因子，并求出递推求解算法和实例仿真进行验证模型的正确性。最后，通过实例仿真确定车削振动工艺参数刚度系数、主轴转速、刀具几何参数等对车削颤振系统稳定性的影响规律。分析结果表明：通过调节这些参数可以有效地控制车削加工中的稳定性，从而有效地提高加工效率和精度。

Influence of Multiparameter With Dynamic Excitation on Turning Stability for Underfloor Wheelsets

The underfloor wheelsets lathe is a critical facility for online processing of locomotive wheels. It has a direct effect on wheel tread’s stability for the change of turning parameters in the turning process. First, based on the dynamic turning forcebeingexcitation, a dynamical model of the turning system was established and analyzed to confirm the influence factors of turning stability for underfloor wheelset tread’s process. Second, reasonable inference was also made and the correction of the model was verified in this paper. Fianlly, through example simulation, the spindle speed, rigidity coefficient and tooling geometric parameters were obtained to be crucial for turning chatter system stability. Results show that the stability of turning processing can be effectively controlled by adjusting these parameters to improve the efficiency and precision.