深孔DF系统脉冲排屑机理的研究

Research on Mechanism of Pulse Chip Removal in Deep Hole DF System

针对深孔DF系统采用恒定供油方式,排屑效率受到影响的问题,在DF系统排屑机理的研究基础上,提出脉冲供油排屑方式,实验不同脉冲供油频率下的切削液流量变化信号;分析流量变化数据,得到脉冲效果最佳的频率参数;基于Fluent软件对采用脉冲供油排屑方式时的流体特性进行仿真实验,得出脉冲式供油能够增强排屑过程中的冲击、扰动效果,加速切屑的折断、排出过程,缓解堵屑现象的发生。

To improve the low chip removal efficiency due to the deep hole DF system adopting constant oil supply method, a pulse oil supply chip removal method based on the research of the chip removal mechanism of the DF system was proposed. Through pulse chip removal experiment, the cutting fluid flow change signals under different pulse oil supply frequencies were elected. The flow rate change data was analyzed to obtain the frequency parameter with the best pulse effect. And based on the Fluent software, a simulation experiment was performed on the fluid characteristics by oil supply chip removal method, with the conclusion that the pulse liquid supply can enhance the impact and disturbance effect during the chip removal process, accelerate the chip breaking and discharge process, and alleviate the occurrence of chip blocking phenomenon.