CAJ | 학술논문

针对微线段数控加工过程中的插补问题，为减小微线段数控加工中的速度波动，实现转接点的平滑过渡，提出过控制顶点曲线的过渡插补算法。首先构建微线段曲线的过渡矢量模型，根据基于特征多边形顶点的曲线模型的几何特性，构建过控制顶点曲线的过渡矢量模型，然后采用过控制顶点曲线过渡模型对微线段进行插补计算，根据加工误差计算控制顶点，确定约束速度并实时进行前瞻处理，最后通过实例进行了验证。实验结果表明，所提出的方法有效地提高了微线段转接速度，缩短了加工时间，实现了曲线的平滑过渡。
침대미선단수공가공과정중적삽보문제，위감소미선단수공가공중적속도파동，실현전접점적평활과도，제출과공제정점곡선적과도삽보산법。수선구건미선단곡선적과도시량모형，근거기우특정다변형정점적곡선모형적궤하특성，구건과공제정점곡선적과도시량모형，연후채용과공제정점곡선과도모형대미선단진행삽보계산，근거가공오차계산공제정점，학정약속속도병실시진행전첨처리，최후통과실례진행료험증。실험결과표명，소제출적방법유효지제고료미선단전접속도，축단료가공시간，실현료곡선적평활과도。
In order to reduce the velocity fluctuations and realize smoothing transition for machi-ning of micro line segments ,an interpolation algorithm was presented based on curve though control points .The curve transition vector model of micro-line segments was constructed .On the basis of geo-metric characteristics of curve model based on the characteristic polygon vertex ,a vector model was proposed based on curve transition through control points .Interpolation of micro-line segments were calculated by using vector model based on the curve transition according to the machining errors and geometric characteristics of the curve ,values of control vertex were calculated ,the constraint velocity was determined ,and real-time look-ahead control was processed .The proposed method was evaluated by an experiment ,and experimental results demonstrate that the algorithm can effectively improve transition speed of the micro-line segments ,shorten the machining time ,and achieve smooth transi-tion .