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钛合金与铝合金叠层构件的装配孔制备过程中存在孔壁质量差、尺寸超差等问题,为解决该问题,开展了低频轴向振动扩孔、铰孔与传统扩孔、铰孔的对比试验,重点分析了其在切屑形态、加工质量等方面的差异。结果表明,振动制孔技术能够产生C形或发条形切屑,利于切屑排出,减小铝合金孔壁的划伤。使用振动辅助技术进行一次扩孔与一次铰孔后,钛合金与铝合金孔壁粗糙度均可低于R_a0.6μm,孔径精度可满足H7公差等级,出口毛刺高度小于200μm。
In order to solve this problem, low-frequency axial vibration reaming, reaming and traditional reaming, reaming and reaming have been carried out during the fabrication of titanium alloy and aluminum alloy laminated components. Contrast test, focusing on the analysis of its chip morphology, processing quality differences. The results show that the vibration technology can produce C-shaped or bar-shaped chips, which is conducive to chip discharge, reduce the aluminum alloy wall damage. After using vibration assisted technology to reaming and reaming once, the wall roughness of titanium alloy and aluminum alloy can be lower than R_a0.6μm, the aperture precision can meet the tolerance of H7, and the height of exit burr is less than 200μm.