CAJ | 학술논문

刀具半径补偿技术是CNC数控系统中的关键技术,根据编程轨迹及刀具半径值计算出刀具中心的运动轨迹来保证零件轮廓.定义了方向矢量的概念,提出一种基于方向矢量的三维刀具半径补偿技术,推导了球铣刀铣削空间直线与圆弧相接零件轮廓的刀具半径补偿计算公式.其中相邻刀具路径转接过渡时采用了圆弧过渡而不是直线过渡的形式,避免了尖锐拐角的形成,有利于刀具的平稳运动.仿真结果证明了该算法的可行性.
도구반경보상기술시CNC수공계통중적관건기술,근거편정궤적급도구반경치계산출도구중심적운동궤적래보증령건륜곽.정의료방향시량적개념,제출일충기우방향시량적삼유도구반경보상기술,추도료구선도선삭공간직선여원호상접령건륜곽적도구반경보상계산공식.기중상린도구로경전접과도시채용료원호과도이불시직선과도적형식,피면료첨예괴각적형성,유리우도구적평은운동.방진결과증명료해산법적가행성.
Cutter radius compensation is the key technology in CNC system.It is the necessary premise to guarantee the part contour according to programming track and cutter radius to plan the tool center path.The concept of orientation vector is defined and a technology of 3D cutter radius compensation based on vector method is put forward.The calculation formula of space straight line and the circular arc which are formed by ball-end cutter is derived.The corresponding algorithm of tool center path for programming contour is estab-lished according to the relation between the geometric elements.Arc transition is adopted rather than linear transition form when the adjacent tool path is switching transition can avoid the formation of sharp corner,which is beneficial to the smooth motion of the tool.Simulation results proved that the algorithm is accurate and feasible.