摘要
采用超声振动辅助对SiCp/Al进行钻削加工,研究了超声振动条件下钻削加工的表面形成机理,讨论了超声振动辅助实现表面质量改善的工艺条件,并分析了表面缺陷的主要形式及其形成机理。结果表明:采用超声振动钻削加工能明显改善表面粗糙度和表面形貌,减少表面缺陷;在高钻削速度和大振幅超声振动的条件下,能在钻削过程中形成表面磨抛效应,进而显著改善孔表面质量;超声振动钻削中表面缺陷的主要形式有涂抹、耕犁、划痕、凹坑以及粘附。
Ultrasonic vibration was added in drilling of SiCp/A1. Surface formation mechanism in drilling with the assistance of ultrasonic vibration was investigated, and the machining conditions required to achieve better surface quality were discussed, and the main surface defects and their formation mechanisms were analyzed. The experimental results show that with the assistance of ultrasonic vibration the surface roughness and topography are improved and fewer surface defects are formed. At high drilling speed and large amplitude of ultrasonic vibration, burnishing and honing effects are established and thus drilled surfaces are notably refined. The main surface defects formed under ultrasonic vibration are smears, ploughs, grooves, pits and adhered materials.
出处
《机械设计与制造》
北大核心
2014年第2期116-118,共3页
Machinery Design & Manufacture
基金
国家科技重大专项(2011ZX04015-031)
