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大型数控装备具有单件加工周期长、加工成本高等特点,一旦其发生加工故障将会给企业带来巨大经济损失.为此,从数控装备加工过程动力学建模的角度出发研究了工艺可靠性仿真方法首先建立了数控装备铣削加工过程的非线性动力学模型,以分析不同工艺条件下数控装备铣削加工性能.在此基础上,采用支持向量回归机,建立了数控装备铣削加工性能映射模型及其工艺可靠性仿真模型.最后,以数控七轴五联动车铣复合加工机床为对象开展了实例仿真分析.仿真结果表明该方法能够较好地识别数控装备加工过程中不同工艺参数的调整对其工艺可靠性的影响.
Large-scale numerical control equipment has the advantages of long processing cycle and high processing cost, and it will bring great economic losses to the enterprise once the machining failure occurs.Therefore, the reliability of the process is studied from the point of view of the kinematics modeling of NC equipment. The simulation method first establishes the nonlinear dynamics model of the CNC milling process to analyze the milling performance of the CNC machining equipment under different technological conditions.On this basis, using the support vector regression machine, establishes the mapping model of the CNC milling performance and Its process reliability simulation model.Finally, an example simulation analysis is carried out on a CNC seven-axis five-spindle turning and milling machine tool.The simulation results show that the method can better recognize the different process parameters during the NC machining process, Impact of process reliability.