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为了减小振动与噪声,提出了以承载传动误差幅值最小为优化目标的修形齿面设计方法:通过两段曲线与一段直线分别设计齿廓、齿向、三维修形(齿廓与齿向修形的叠加)修形曲线,通过三次B样条拟合了相应的修形曲面,与理论齿面叠加构造了斜齿轮修形齿面,推导了其法矢,将斜齿轮修形技术与承载接触分析技术结合起来,采用遗传算法对修形曲线参数进行优化,编制了一套齿面修形优化分析程序,能对修形后的斜齿轮副进行齿面接触分析(TCA)、承载接触分析(LTCA).结果表明:无修形齿轮副的传动误差幅值随载荷增加而增大,修形后随载荷的增加重合度逐渐增大,幅值会产生波动,然后保持稳定,为斜齿轮修形齿面优化设计提供了新的方法.
In order to reduce the vibration and noise, a modified tooth surface design method is proposed, which is based on the objective of minimizing the load transmission error. The tooth profile, tooth orientation, three-dimensional modification (tooth profile and tooth profile) And the modified curves are fitted by cubic B-spline. The modified tooth surfaces are fitted to the theoretical tooth surfaces, and the tooth surfaces of the helical gears are modified to form the normal vector. The helical gear modification technology Combined with bearer contact analysis, a genetic algorithm is used to optimize the parameters of the repairing curve. A set of optimization program for tooth profile modification is developed. The tooth profile contact analysis (TCA) of the modified helical gear pair can be carried. Contact analysis (LTCA). The results show that the amplitude of transmission error of non-modified gear pair increases with the increase of load, the coincidence degree increases with the increase of load and the amplitude fluctuates and then remains stable as Helical gear tooth surface optimization design provides a new way.