基于铣削力模型的NOMEX蜂窝固持工艺优化  

Clamping technology optimization of high speed machining of NOMEX honeycomb core based on milling force model

作　　者：金成柱[1] 刘刚[1] 柯映林[1] 

机构地区：[1]浙江大学机械与能源工程学院

出　　处：《浙江大学学报（工学版）》2007年第4期547-550,555,共5页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金重点资助项目(50435020)

摘　　要：为了解决蜂窝芯高速铣削加工过程中出现的固持可靠性差以及加工精度与效率低的问题,需要准确建立铣削参数与固持工艺参数之间的关系模型.提出了一种基于磁场和摩擦吸附原理的蜂窝芯固持方法,克服了传统双面胶带固持方法带来的种种弊端.利用有限元模拟试验建立了加工误差、铣削力、固持工艺参数之间的关系模型,并对固持工艺参数进行优化分析.针对薄厚度蜂窝的加工实验结果表明,应用该模型对固持参数进行优化,可减少70%的铁粉填充量,有效地提高了固持率,同时保证了±0.1 mm级的加工精度.To solve problems of low clamping reliability, machining precision and efficiency during high speed machining of honeycomb, an accurate model that reflects the relationship between machining parameters and clamping parameters is needed to select optimal clamping parameters and to improve machining precision and clamping reliability. A new clamping method on the basis of magnetic field and friction was put forward and defects of the rubber belt were overcome. A finite element model that reflects the relations among machining errors, machining forces and clamping parameters was built, and the clamping parameters were optimized. Based on the proposed model, a thin honeycomb workpiece was machined and results showed that the amount of iron powder is reduced by 70 %, clamping reliability is increased, and machining precision of ±0.1 mm is met.

关 键 词：蜂窝芯 铣削力 摩擦吸附 优化 

分 类 号：V214.6[航空宇航科学与技术—航空宇航推进理论与工程]