高变位齿轮的修形及降噪分析

High Profile Shifted Gear Modification and Analysis of Noise Reduction

针对海洋钻进平台减速器高位齿轮在低速重载工况中存在啮合冲击大、齿面容易胶合以及传动噪音大等问题,选取减速箱高速级的一对齿轮副进行分析建模。在齿轮所受载荷不变的条件下,改变齿轮的齿形修形量,利用Kisssoft软件对齿轮的传动误差和瞬时加速度进行对比分析,通过ANSYS软件对齿轮修形前后的齿轮模态分析验证了齿轮修形可以减震降噪的正确性。研究结果表明:合理的修形设计能有效改善啮合质量、降低齿轮传动误差和噪音;当修行量达到26μm时,传动误差和安全系数达到最佳值,相应的齿轮噪音值最低,为低速重载齿轮修形在实际工程上的应用提供参考依据。

Focusing on large tooth surface easy agglutination and noise transmission problem. In view of the ocean drilling platform high speed reducer gear meshing impact is found in condition of low speed and heavy loading,this research selected the reducer high speed level modeling a pair of gears is analyzed under the condition of gear by load constant. By changing the amount of gear tooth profile modification,transmission error of gear and instantaneous acceleration for comparative analysis research. Finally,through the ANSYS software before and after the modification of gear modal analysis and verifies the validity of the gear modification can damping noise reduction. The research results show that through the reasonable modification design,can effectively improve the meshing quality,reduce the gear transmission error and noise. When practice quantity achieved 26 microns,transmission error and the safety coefficient of the best value,the corresponding minimum gear noise values,the gear modification of low speed and heavy loading will provide referential basis for the application in practical engineering.