基于FLUENT软件的深孔加工负压抽屑装置分析研究  

The Deep Hole Processing Negative Pressure FLUENT Software Based on the Chip Sucking Device

作　　者：董振[1] 沈兴全[1] 蒿风花 权保罗 

机构地区：[1]中北大学机械与动力工程学院,太原030051

出　　处：《现代制造技术与装备》2016年第4期39-40,51,共3页Modern Manufacturing Technology and Equipment

基　　金：国家国际科技合作专项项目(2013DFA70770)

摘　　要：负压抽屑装置是保障深孔加工排屑顺畅的有力手段。本文提出建立充分考虑流量、流速、间隙宽度、喷射夹角等影响因素的负压抽屑数学模型,分析这些因素对抽屑效果的影响,并利用FLUENT软件对有无负压抽屑装置情况下分别进行仿真对比,量化研究其抽屑效果。结果表明:射流喷嘴的间隙和喷射角是影响负压抽屑效果的关键因素;无负压装置时,切屑在排屑通道中只受到推力,并且随位移逐渐减弱;当推力减小到小于阻力时,切屑容易在排屑口尾部滞留,发生堵屑现象;加载负压抽屑装置时,在排屑通道尾部形成压力差,产生3倍于排屑通道推力的吸力,使切屑在通道尾部受到一个强力的加速度,克服切屑阻力,排屑效果提高了200%。Suction chip removal device is guarantee smooth chip powerful means of deep hole processing scheduling is proposed in this paper a fully consideration of the flow, velocity of flow, gap width, jet angle influence factors of negative pressure pump crumbs mathematical model and analysis of influence of these factors on the performance of chip, and the use of fluent software simulation of the case of suction chip removal device, quantitative research the chip removing effect. The results show that the gap between the jet nozzle, and the spray angle is litter effects of key factors affecting vacuum pumping; no negative pressure device, chip on chip channel only by the thrust and with displacement gradually weakened, when thrust decreases to less than resistance, chip easily in the lag of the tail of the chip removal mouth left, blocking chip; loading suction chip removal device, in the chip channel of tail formation pressure difference, produces three times suction on chip channel thrust, the chip at the back end of the channel by a strong acceleration overcome cut chip resistance, chip removal is increased by 200 %.

关 键 词：深孔加工 负压抽屑 FLUENT软件 仿真分析 

分 类 号：TG52[金属学及工艺—金属切削加工及机床]