基于微量润滑磨削的双喷口喷嘴雾化仿真分析

摘要/Abstract

摘要：

为了减小磨削时砂轮表面气障层的影响，提高磨削液润滑和冷却的效果，设计了一种双喷口结构的喷嘴。分析了微量润滑雾化机理，采用二级雾化理论建立了雾化数学模型，对双喷口喷嘴的雾化过程进行了仿真分析，并对仿真结果进行了验证。研究结果表明：双喷口喷嘴能有效减小雾滴直径，提高磨削液的雾化效果；辅助喷口雾滴可以扰乱砂轮表面的空气环流，减小气障层对主喷口雾滴流向的影响，促使主喷口喷出的雾滴能顺利进入磨削区。

关键词: 喷嘴, 雾化, 数值仿真, 微量润滑, 磨削

Abstract:

In order to reduce the impacts of gas barrier, a double-spout nozzle was proposed. The atomization mechanism of MQL was analyzed, and the mathematical model was established by two-stage atomization model. The atomization process of the double-spout nozzle was simulated to analyses the atomization properties, and experiments were carried out to verify the simulation. The results show that the structure of the double-spout can effectively decrease the diameter of droplets and improve the atomization performance. The droplets sprayed by the assistant jet can break the air barrier layer and reduce the effect of the gas barrier layer on droplet flow. Therefore, the droplets from the main jet can enter the grinding zone easily.

Key words: nozzle, atomization, numerical simulation, minimum quantity lubrication(MQL), grinding

中图分类号:

TG580.15

毛聪, 周鑫, 谭杨, 孙小丽. 基于微量润滑磨削的双喷口喷嘴雾化仿真分析[J]. 中国机械工程, 2015, 26(19): 2640-2645.

Mao Cong, Zhou Xin, Tan Yang, Sun Xiaoli. Numerical Simulation of Atomization Performance for Double-spout Nozzle Used in MQL Grinding[J]. China Mechanical Engineering, 2015, 26(19): 2640-2645.

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