滚动轴承波纹度对齿轮动态传递误差的影响

Influence of Rolling Bearing Waviness on Gear Dynamic Transmission Error

为了研究轴承波纹度制造误差对轴承-齿轮传动系统中齿轮动态传递误差的影响,构建了轴承滚道表面时变波纹度误差表征模型,建立了考虑轴承内外圈滚道表面波纹度幅值、波数以及时变齿轮啮合刚度的轴承-轴-齿轮系统耦合动力学模型,研究了齿轮传动系统支撑轴承内外圈滚道表面波纹度幅值和波数对齿轮动态传递误差的影响规律。仿真结果表明:输入轴支撑轴承存在波纹度误差时,其外圈滚道波纹度对齿轮动态传递误差的影响大于内圈滚道;输出轴非负载端支撑轴承存在波纹度误差时,其内外圈滚道波纹度对齿轮动态传递误差的影响相似;输出轴负载端支撑轴承存在波纹度误差时,其外圈滚道波纹度对齿轮动态传递误差的影响大于内圈滚道。

Gear transmission error is one of the main sources of vibration excitation in gear transmission system.It is also one of the main causes of noise.The bearing manufacturing error is an important factor affecting the vibration characteristics of gear transmission system.In order to study the influence of the manufacturing error of bearing corrugation on the dynamic transmission error of gear in the bearing-gear transmission system,a representation model of time-varying corrugation error on the raceway surface of bearing is established.A bearingshaft-gear coupling dynamic model considering the raceway surface waviness amplitude and wave number and the time-varying gear mesh stiffness is established.The influence law of the corrugation amplitude and wave number on the dynamic transmission error of gear meshing is studied.The simulation results show that when the waviness error exists in the support bearing of input shaft,the influence of the waviness error of outer raceway on the dynamic transmission error of gear is greater than that of inner raceway.When there is waviness error of output shaft non-load bearing,the corrugation of inner and outer raceway has similar effect on the dynamic transmission error of gear.When the bearing at the load end of output shaft has the waviness error,the influence of the corrugation of outer raceway on the dynamic transmission error of gear is greater than that of inner raceway.