纸基蜂窝芯零件高速铣削固持系统设计

为了提高纸基蜂窝芯零件高速铣削时的加工精度，降低加工成本，提出了两种基于磁场和摩擦吸附固持原理固持平台的设计方案，即采用电磁装置激发磁场和采用永磁材料激发磁场，并进行了加工制造。通过理论分析和计算确定了在给定铣削力的条件下，可靠固持蜂窝芯材料所必需的磁感应强度。利用有限元软件分析了磁极高度、厚度以及磁极间距等结构参数对磁感应强度的影响。利用制造的两套固持平台进行了铣削试验，得到了满意的固持效果。

Fixing System Design of Paper Honeycomb Core for High Speed Milling

In order to improve shaping precision and reduce machining expenditure of paper honeycomb core material for high--speed NC milling, two fixing equipment were designed and manufactured based on magnetic field and friction force principles. One used electric magnetic coil and the other used permanent magnetic material. Required magnetic induction intensity for fixing core material was determined under given machining conditions. Then contributing factors of structural parameters, such as height, span and thickness of magnetic poles, on magnetic induction intensity were analyzed using finite element method. Finally, machining experiments are done using two fixing equipments and satisfactory machining results are achieved.