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基于成形磨削的几何原理和机床运动学原理,提出了斜齿轮副的一种分段拓扑修形方法.通过改变齿顶和齿根处渐开线的发生线长度实现齿廓分段修形;给砂轮附加一个抛物线+直线的径向进给运动实现齿向分段修形.推导出基于成形磨削过程中拓扑修形齿面的计算公式,对修形齿面的边界进行了划分,建立成形磨齿机各伺服轴的运动方程.根据齿面的数值模拟结果,在五轴数控(CNC)成形磨齿机上进行磨削加工与在机拓扑测量,验证了成形法实现齿面拓扑修形的可行性.对给定转速和负载工况下的齿轮箱进行加载试验,齿轮箱振动能量级幅值下降0.008dB,噪声减小约2dB.研究表明分段拓扑修形有利于降低齿轮传动振动和噪声.
Based on the geometric principle of forming grinding and the kinematics principle of machine tool, a sectional topological modification method of helical gear pair is proposed, and the modification of tooth profile is realized by changing the line length of involute at tooth tip and root ; And adding a parabola + linear radial feed motion to the grinding wheel to realize the segmental modification of the tooth direction. The formula for calculating the topological modified tooth surface based on the forming grinding process is deduced, the boundary of the modified tooth surface is divided, Based on the numerical simulation results of tooth surface, grinding machining and in-machine topology measurement were carried out on a five-axis CNC grinding machine to verify that the forming method achieves the topological repair of tooth flanks The feasibility of the gearbox.At the same time, the load test of the gearbox under a given speed and load condition has shown that the amplitude of the vibration energy level of the gearbox is reduced by 0.008dB and the noise is reduced by about 2dB.The research shows that the segmented topology modification is helpful to reduce the gear transmission Vibration and noise.