Application of Lubrication Theory to Near-Dry Green Grinding-Feasibility Analysis
This paper describes an investigation about the grinding fluid optimization supply basedon lubrication theory.The models for three-dimensional hydrodynamic flow pressure in contactzone between wheel and work are presented based on Navier-Stokes equation and continuousformulae.It is well known that hydrodynamic fluid pressure generates due to this fluid flux,andthat it affects overall grinding resistance and machining accuracy.Moreover,conventional methodsof delivering grinding fluid,I.e.flood delivery via a shoe or jet delivery tangential to the wheel via anozzle,have been proved that they can not fully penetrate this boundary layer and thus,the majorityof the cutting fluid is deflected away from the grinding zone.Therefore,in this paper,a newdelivery method of grinding fluid,the minimum quantity lubricant (MQL)-near-dry green grindingis presented and analyzed for it not only reduces hydrodynamic lift force but also reduces grindingfluid cost to achieve green manufacturing.Experiments have been carried out to validate theperformance of the MQL supply compared with conventional flood cooling.The experimentalresults have shown that the theoretical model is in agreement with experimental results and themodel can well forecast hydrodynamic pressure distribution at contact zone between and workpieceand the MQL supply in grinding is feasible.Experiments have also been carried out to evaluate theperformance of the MQL technology compared with conventional flood cooling.Experimental dataindicate that the proposed method does not negatively affect to the surface integrity and the processvalidity has been verified.
Lubrication theory Hydrodynamic pressure Minimum quantity lubricant (MQL)
C.H.Li Y.L.Hou S.C.Xiu G.Q.Cai
School of Mechanical Engineering,Qingdao Technological University,266033 China School of Mechanical Engineering and Automation,Northeastern University,110004 China
国际会议
成都
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）