CAJ | 학술논문

针对四轴数控磨削机床加工复杂曲面时的局部干涉问题,提出一种基于圆弧面砂轮的干涉检测与消除方法。基于对两种局部干涉的分析,首先根据曲率拟合要求确定最佳的相对刀轴方向以避免过切干涉,然后根据磨削点的法向量确定合适的刀触点以避免轴向干涉。利用UG OPEN API通过二次开发完成叶片叶盆表面的加工仿真,仿真结果表明,该方法切实可行,表面加工误差可小于0.05mm。
침대사축수공마삭궤상가공복잡곡면시적국부간섭문제,제출일충기우원호면사륜적간섭검측여소제방법。기우대량충국부간섭적분석,수선근거곡솔의합요구학정최가적상대도축방향이피면과절간섭,연후근거마삭점적법향량학정합괄적도촉점이피면축향간섭。이용UG OPEN API통과이차개발완성협편협분표면적가공방진,방진결과표명,해방법절실가행,표면가공오차가소우0.05mm。
Aiming to the local interferences when grinding a curved surface in 4-axis CNC grinder,a method of interference detection and elimination was proposed based on an arcs surface grinding wheel.Through the analysis of interferences,firstly the optimum relative wheel-pivot was determined to avoid the undercutting according to the fitting requirements of curvature.Then the appropriate tool contact point（TCpoint） was found on the basis of the normal vector of grinding contact points（GCpoints）,so that the axial interference is eliminated.Finally,a grinding simulation system was developed with UG OPEN API.The results indicate that surface errors are less than 0.05mm.