纸基蜂窝零件夹持方法研究

为了解决当前纸基蜂窝零件高速铣削加工夹持方法的可靠性和稳定性较差以及加工精度低的缺点,提出一种基于磁场和摩擦吸附原理的夹持方法.该方法利用灌入蜂窝芯中铁粉的自重以及外加磁场对铁粉的吸引力,在铁粉与蜂窝侧壁之间以及蜂窝芯与夹具平台之间产生可以控制的摩擦力,利用摩擦力的作用达到在高速加工过程中对纸基蜂窝芯零件的夹持.通过实验证明,该方法简单易行,适合于大批量生产.

Study on paper honeycomb position fixation method

A new fixation method, based on magnetic field and friction-clamping, was presented for countering the low reliability, stability and machining precision of the current fixation technique of paper honeycomb. In this method, the pressures normal to the honeycomb walls and the clamping planes were produced from the gravity of the iron powder injected into the honeycomb and the magnetic force produced by the additional magnetic field. Controllable friction force can be generated between iron powder and honeycomb walls, honeycomb and clamping plane, in the high-speed milling machining. The controllable friction force meets the requirement to fix the honeycomb structure without additional fixation. Proved by experiment, this method is feasible and is fit for volume-producing.