基于Simulink仿真的凸轮轴高速磨削稳定性判定

High-speed grinding stability determination of camshaft based on Simulink simulation

以凸轮轴高速磨削工艺系统稳定性为研究对象,建立磨削系统的凸轮轴-砂轮-支撑系统动力学模型.通过理论分析与数值计算来辨识磨削力的动态影响因素——凸轮轮廓曲率半径和瞬时磨削深度.基于所建立的磨削动力学模型搭建Matlab/Simulink颤振仿真模型,并从稳定性叶瓣图中选取相应的磨削工艺参数组合进行数值仿真分析,将仿真振动位移时域图所得的稳定性结论与稳定性叶瓣图的磨削稳定区域进行比较,验证了建立的磨削动力学模型和数值仿真方法的有效性.

Taking the stability of the camshaft high-speed grinding process system as the research object, the dynamic model of the camshaft and grinding wheel and support system of the grinding system is established. Through theoretical analysis and numerical calculation to identify the dynamic influencing factors of the grinding force, such as cam profile curvature radius and instantaneous grinding depth. Based on the established grinding dynamics model, the Matlab/Simulink flutter simulation model is built, and the corresponding grinding process parameters combination is selected from the stability blade diagram for numerical simulation analysis. The stability of the vibration displacement time domain map is simulated, which is compared with the grinding stability region of the stability leaflet, the effectiveness of the grinding dynamics model and numerical simulation method established is verified in this paper.