自由曲面五坐标环形刀铣削加工刀位轨迹优化

Optimization of cutter location path of five-axis ring-cutter milling of free-form surfaces

将圆环面刀等效为变直径平底刀,推导切削行距与进给方向和刀具姿态之间的函数关系式,分析进给方向、刀具前倾角和侧偏角对切削行距大小的影响,给出一种新的检查和消除环形刀瓶颈干涉的方法。在无干涉的前提下,选取较小的前倾角,沿最小主曲率方向进给,切削区域宽度最大,加工效率最高。

The ring-surface cutter is equalized to the variable-diameter flat-end cutter,the function-relation formula between the cutting strip width feeding direction and the cutter orientation is deduced,the influence of the feeding direction and the front-inclination angle and the lateral-deflection angle of the cutter on the cutting strip width is analyzed,and a new method for inspecting and eliminating the bottle-neck interference of ring cutters is provided.Under the precondition of no interference,a smaller frontinclination angle is chosen to feed along the direction of the minimum main curvature,providing the maximum width of the cutting area and the highest machining efficiency.