摘要
高速加工活塞椭圆销孔等非圆类异形销孔,要求镗刀杆的径向进刀微位移运动频率为100Hz,普通的执行机构难以实现如此高频的机械运动。提出了一种基于超磁致伸缩材料的高频响伺服镗刀杆,用ANSYS软件对这种特殊设计的镗刀杆进行模态分析,并进行了动态优化设计,优化设计后的伺服刀杆系统一阶、二阶、三阶固有频率均远离镗刀杆的使用频率。用动态优化设计后的刀杆进行了椭圆销孔的镗削试验,取得了较为满意的效果。
Boring the noncircular shaped piston pin hole （ NSPPH ） in high speed, the response frequency of boring bar must be at 100Hz. Normal boring bar can not meet the needs. The special designed boring bar （ SDBB） based on giant magnetostrictive material （GMM） is presented. The SDBB has been analyzed with Finite element analysis code ANSYS. Dynamic designing method is used to modify the original structure of SDBB to get a higher resonant frequency. 3 orders of the optimized boring bar structure are far away from 100Hz. A trial experiment is. performed with SDBB. It is demonstrated that the optimized mechanism can meet the needs to perform machining on NSPPH effectively.
出处
《制造技术与机床》
CSCD
北大核心
2006年第8期103-106,共4页
Manufacturing Technology & Machine Tool
基金
国家自然基金资助项目(50445004)
