复合材料紧固孔超声椭圆振动套切技术研究

The Study of Carbon Fiber Composites Fastening Hole Ultrasonic Elliptical Vibration Trepanning Drill

针对航空航天领域大直径复合材料紧固孔加工难题,提出了一种新型的加工技术,即超声椭圆振动套切技术.建立了分离性超声椭圆振动套切的刀具运动模型,理论分析了该技术在钻削力、钻削温度等方面的加工特性,并经实验验证了超声椭圆振动套切技术可以大大缩短复合材料大直径紧固孔的制孔工序,提高了加工效率,有效降低了钻削力和钻削温度,避免了复材出口处的分层和撕裂,提高了加工质量.

Aim at the machining of large diameter carbon fiber composite fastening holes in the aerospace field,the paper proposes a new method of ultrasonic elliptical vibration trepanning drill.The motion modal of the separated ultrasonic elliptical vibration trepanning drill is built.The drilling force and drilling temperature are analyzed theoretically,combined with the related experiments.The experimental verified that ultrasonic elliptical vibration cutting technology greatly reduces the machining sets of large-diameter laminated fastening holes and improves the processing efficiency,effectively reduces the cutting force and the cutting temperature,avoids the delamination and avulsion,and improves the processing quality.