基于刀具进让式进给数控加工技术的研究
Research on NC Machining Technology Based on Cutting Tool with Forward and Backward Motion
Abstract
通过分析常规数控加工中存在的问题,提出了一种刀具在进给方向上可进让式进给切削工件曲面轮廓的新工艺方法,建立了进让式进给切削数学模型,并从被加工工件的几何形状、切削过程中刀具受力情况及切削区的切削热释放情况等方面,具体分析了采用该方法对加工精度的改善情况,并给出了算法步骤。试验结果表明,新方法有利于减小工艺系统的变形,显著提高了工件的加工精度。 Based on analyzing problems that general NC machining process existed,this paper proposed a machining method of cutting tool forward-and-backward machining work piece in feed direction.The calculation model of cutting location was established,and the advantages of this process included a superior surface finish,low tool pressure and cutting heat released easily in the cutting section.Finally,experiments and data were shown.The advantages were illustrated by reducing deformation of machining complex and achieving higher machining precision.