一种基于气压悬浮磨料池光整加工方法的研究

Research on a finishing method based on air pressure suspension abrasive tank

针对复杂曲面难加工零件,提出一种基于气压悬浮磨料池光整加工方法:采用气压悬浮磨料的混合方式,工件表面与流态化磨料产生相对运动速度,从而使固体颗粒与工件表面发生微观二体磨料磨损。通过对磨粒进行动力分析以及气固二相流加工机理分析,揭示了磨料池内部气体和磨料混合及扩散规律。利用光整加工实验确定了光整加工过程中最佳的主轴转速和工件进给速度,当磨料池的管道布局方式为螺旋上升时,光整加工效率最高,表面质量最好。

Aiming at the difficult-to-machine parts of complex curved surfaces,a finishing method based on air pressure suspension abrasive tank was proposed.The mixing method of pneumatic suspension abrasives was used to produce the relative motion speed between the surface of the workpiece and the fluidized abrasive,so that the solid particles and the surface of the workpiece have microscopic two-body abrasive wear.Through the dynamic analysis of the abrasive particles and the analysis of the gas-solid two-phase flow processing mechanism,the mixing and diffusion laws of gas and abrasive inside the abrasive tank were revealed.The optimum spindle speed and feed rate during the finishing process were determined by the finishing test.When the pipeline layout of the abrasive tank was spirally rising,the finishing efficiency was the highest and the surface quality was the best.