基于电子齿轮箱的内啮合强力珩齿同步误差补偿方法研究

Research on synchronous error compensation method of internal mesh powerful honing based on electronic gear box

电子齿轮箱作为一种特殊的多轴联动控制技术,是齿轮展成加工机床数控系统中的控制核心,其同步控制精度决定齿轮加工精度。内啮合强力珩齿作为一种重要的齿轮精密加工工艺,其展成加工精度很大程度上由电子齿轮箱的控制精度决定。文章结合强力珩齿加工的运动学模型,建立了内啮合强力珩齿的电子齿轮箱模型,将强力珩齿加工各运动轴跟踪误差的相对差值定义为同步误差,并将其映射到齿距偏差、齿廓偏差和螺旋线偏差上;提出一种基于电子齿轮箱的同步误差补偿控制方法,建立了同步补偿控制模型;在dSPACE半实物多轴运动仿真平台上,进行内啮合强力珩齿加工的运动控制实验。实验结果表明:所提出的基于电子齿轮箱的同步误差补偿方法可以有效降低内啮合强力珩齿的同步误差。

As a special multi-axis linkage control technology,the electronic gear box is the control core in the CNC system of the gear spreading machine tool,and its synchronization control accuracy determines the gear machining accuracy.As an important gear precision machining process,the development machining accuracy of internal meshing power honing is largely determined by the control accuracy of the electronic gear box.Combined with the kinematics model of power honing,the paper establishes the electronic gearbox model of internal mesh power honing.The relative difference of tracking error of each motion axis of power honing is defined as synchronization error,and mapped to tooth pitch deviation,tooth profile deviation and helix deviation.A synchronization error compensation control method based on the electronic gear box is proposed,and a synchronization compensation control model is established.The motion control experiments of internal meshing power honing are carried out on the dSPACE semi-physical multi-axis motion simulation platform.The experimental results show that the proposed synchronization error compensation method based on electronic gear box can effectively reduce the synchronization error of internal mesh power honing.