Investigation of Coolant Fluid through Grinding Zone in High-Speed Precision Grinding

被引:0
|
作者
李长河 [1 ]
刘占瑞 [1 ]
毛伟平 [1 ]
蔡光起 [2 ]
机构
[1] College of Mechanical Engineering,Qingdao Technological University
[2] College of Mechanical Engineering & Automation,Northeastern University,Shenyang
基金
中国国家自然科学基金; 中国博士后科学基金;
关键词
grinding; useful flow-rate; boundary layer; hydrodynamic pressure;
D O I
10.19884/j.1672-5220.2010.01.015
中图分类号
TG580 [一般性问题];
学科分类号
080201 ; 080503 ;
摘要
In the grinding process,grinding fluid is delivered for the purposes of chip flushing,cooling,lubrication,and chemical protection of the work surface.Due to the high-speed rotation of the grinding wheel,a boundary layer of air forms around the grinding wheel and moves most of the grinding fluid away from the grinding zone.Hence,the conventional method of delivering coolant fluid that floods delivery with high fluid pressure and nozzle fluid rare supply coolant fluid to achieve high performance grinding.The flood grinding typically delivering large volumes of grinding fluid is ineffective,especially under high speed grinding conditions.In the paper,a theoretical model is presented for flow of grinding fluid through the grinding zone in high-speed precision grinding.The model shows that the flow rate through the grinding zone between the wheel and the workpiece surface not only depends on wheel porosity and wheel speed,but also depends on nozzle volumetric flow rate and fluid jet velocity.Furthermore,the model is tested by a surface grinding machine in order to correlate between experiment and theory.Consequently,the useful flow-rate model is found to give a good agreement with the experimental results and the model can well forecast the useful flow-rate in high-speed precision grinding.
引用
收藏
页码:87 / 91
页数:5
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