基于虚拟环境的汽车圆柱齿轮精加工过程可靠性评估方法

The reliability evaluation method of automobile cylindrical gear precision machining process based on virtual environment

针对传统汽车圆柱齿轮精加工过程存在动态扰动、误差收敛控制较差,导致齿轮加工的稳定性及准确性较差、评估方法的可靠性较差的问题,提出基于虚拟环境的汽车圆柱齿轮精加工过程可靠性评估方法。构建汽车圆柱齿轮精加工工件表面稳定性控制参数辨识模型以及刀齿运动调控函数。分析刀齿振动引起的动态扰动因素,获取动态扰动特征,完成汽车圆柱齿轮加工表面稳定性调控及优化。在此基础上提取加工过程可靠性评估的状态参量,并对加工状态参量误差进行收敛分析。以工件特征、工序安排等为控制约束对象,结合虚拟视景仿真技术实现汽车圆柱齿轮精加工过程可靠性评估。仿真结果表明,采用该方法进行汽车圆柱齿轮精加工过程评估可靠性较好,加工误差较小。

In order to solve the problems of dynamic disturbances,poor error convergence control,poor stability and accuracy of gear processing,and poor reliability of evaluation methods in the traditional finishing process of automobile cylindrical gears,it presents a virtual environment-based automobile gear finishing process reliability assessment method.It builds the identification model of the control parameters of the surface stability of the automotive cylindrical gear finishing workpiece,and establishes the regulation function of the cutter tooth motion,analyzes the dynamic disturbance factors caused by the cutter tooth vibration,obtains the dynamic disturbance characteristics,and completes the regulation and optimization of the stability of the machining surface of the automotive cylindrical gear.On this basis,the state parameters of the reliability evaluation of the processing process are extracted,and the convergence analysis of the processing state parameter errors is performed.Taking the characteristics of workpieces,process arrangement etc.as the control constraints,it combines with virtual visual simulation technology to achieve the reliability assessment of the automotive cylindrical gear finishing process.The simulation results show that the method has a good reliability in evaluating the finishing process of automotive cylindrical gears,and the machining errors are small.