基于实际工况的航空弧齿锥齿轮齿面主动设计技术

Active Design Technology of Pinion Surface for Aviation Spiral Bevel Gear based on Actual Condition

在实际工况下,直升机减速器中的箱体、轴承、轴系和齿轮的变形以及安装误差、制造误差和随机误差的存在,加之温度、振动等因素的影响,形成主减速器中弧齿锥齿轮错位,破坏了理想的啮合条件,齿面印痕必将偏离理想状态,同时传动误差曲线也要发生变化,引起齿轮副运转不平稳、振动、冲击等不利因素。因此,根据齿面印痕的偏移,识别相应的当量错位,将其反馈到齿面设计中,对于提高齿轮副实际工况下的啮合质量具有重要的工程意义。

In actual conditions, because of the deformation of the box, bearings, shafts and gears in a helicopter reducer, the existence of installation error, manufacturing error and random error, the influence of temperature and vibration, the spiral bevel gear produces misalignment, and they destroyed the ideal meshing condition. The misalignment causes the contact pattern to deviate from the ideal position, at the same time, the transmission error curve also changes, which result in the irregular running, vibration, shock of gear set. Therefore, according to the deviation of the contact pattern to identify the equivalent misalignment, feed it into the tooth surface design, this technology has important engineering significance for improving the meshing quality of gear pair under actual conditions.