纳米粒子射流微量润滑磨削表面粗糙度预测与实验验证

摘要

With the development of environmental protection consciousness ,the minimum quantity lubrication technology was used to grinding process .But it existed the disadvantage of cooling shortage and can ’ t meet heat transfer requirements in the high grinding zone .A new technique was presented ,which added some nanoparticles with certain quality fraction into base oil in mini-mum quantity lubrication .It can solve the problem about heat transfer and also improve lubricating property of wheel and work -pieces interface .The surface roughness of workpieces was predicted in minimum quantity lubrication with nanoparticles ,and the novel equipment of measuring the surface topography and the simulation method of surface topography were also presented .Two materials were chosen to perform the numerical simulation of surface morphology and experiment in grinding process .It turned out that the predicting method can be more accurate to forecast the surface roughness of workpiece in grinding process and also had a guiding significance for grinding parameter choice .%随着人们环保意识的增强，微量润滑技术已经开始应用于磨削加工中，但是它的冷却效果有限，不能满足高磨削区温度强化换热的要求。而纳米粒子射流微量润滑新工艺的提出，可以有效地解决磨削区换热问题，同时又增强了砂轮与工件界面的润滑特性。针对在纳米粒子射流微量润滑磨削条件下磨削工件表面粗糙度预测，提出一种用于测量砂轮表面形貌的装置以及对磨削工件表面形貌进行模拟仿真的方法。并以两种工件材料为研究对象进行表面形貌数值模拟和实验验证，结果表明该种预测方法能够较准确地对磨削加工工件表面粗糙度进行预测，对于磨削参数的选择具有一定的指导意义。