C/SiC陶瓷基复合材料旋转超声制孔工艺研究  

Study on Rotary Ultrasonic Drilling Process of C/SiC Ceramic Matrix Composite

作　　者：陈少帅 顾钒 朱垠燃 郭英杰[2] 毕运波[2] 董辉跃[2] CHEN Shaoshuai;GU Fan;ZHU Yinran;GUO Yingjie;BI Yunbo;DONG Huiyue(AVIC Xi’an Aircraft Industry Group Company Ltd.,Xi’an 710089,China;Zhejiang University,Hangzhou 310027,China)

机构地区：[1]中航西安飞机工业集团股份有限公司,西安710089 [2]浙江大学,杭州310027

出　　处：《航空制造技术》2022年第18期63-70,共8页Aeronautical Manufacturing Technology

基　　金：国家自然科学青年基金(52105535)。

摘　　要：针对C/SiC陶瓷基复合材料硬度高、难加工的特点,研究了机器人旋转超声制孔工艺优化策略。采用基于出口撕裂面积的缺陷评估方法,分析了陶瓷基复合材料制孔缺陷;通过正交试验研究了主轴转速、进给速度、超声振幅等工艺参数对制孔质量和孔径精度的影响规律,并利用方差分析和极差分析方法确定了最优工艺参数;基于此工艺参数,开展了刀具磨损试验。结果表明,对于厚度为8 mm的C/SiC陶瓷基复合材料叠层试板,钎焊金刚石套料钻可以稳定制40个孔,孔径精度达H9,撕裂面积因子在0.2以内;最后综合考虑制孔质量与效率要求,提出了先快后慢分段切削的工艺策略,在保证制孔质量的同时提高了制孔效率。In this paper,considering the characteristics of high hardness and difficult machining of C/SiC ceramic matrix composites,we studied the optimization strategy of robotic rotary ultrasonic drilling technology.The drilling defects of ceramic matrix composites were analyzed,and the defect evaluation method based on the tearing area of the exit was adopted.The influence of the spindle speed,feed speed,ultrasonic amplitude and other process parameters on the hole quality and diameter accuracy was studied through orthogonal experiments.Variance analysis and range analysis methods were used to determine the optimal process parameters.On this basis,a tool wear test was further carried out,and the results showed that for the C/SiC ceramic matrix composite laminated plate with a thickness of 8 mm,40 holes can be drilled with a brazing diamond trepanning drill,the hole diameter accuracy is up to H9,and the tearing area factor is within 0.2.Finally,a step drilling process strategy of“fast followed by slow”is proposed to ensure the drilling quality and efficiency at the same time.

关 键 词：陶瓷基复合材料 旋转超声加工 机器人 工艺参数 缺陷分析 

分 类 号：TB332[一般工业技术—材料科学与工程]