Latitude distribution algorithm of cutter position optimization on drum-like cutter for strip-maximization
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摘要: 为便于鼓形刀定位和姿态调整,结合最短距离线对思想,将刀具沿纬度方向进行离散.为使刀具更好地适应工件的曲率分布,实现广域曲率分布吻合,采用单点切触方法,在加工曲面一定范围内寻求最佳切触点,以达到最大切削行宽;分别采用等参数和等波高2种刀位优化算法,编制了程序;通过实例验证了新算法在避免干涉并获得最大行宽、以及实现等参数和等波高刀轨排列方面的有效性.该技术对于提高航空复杂曲面结构件的加工效率和加工质量具有重要意义和广泛的应用前景.Abstract: Based on the theory of the shortest lines, the drum-like cutter was dispersed along the latitude direction convenient for the cutter location and pasture regulation. For global fitting the curvature distribution of the cutter and the surface to be machined, cutter was firstly located to one point at the machining surface; the best contact point was searched in a certain range at the machining surface for the maximum bandwidth. The iso-parametric tool-path planning method and the iso-scallops tool-path planning method were used. A program was developed to verify the validity of the new algorithm in avoiding interference, realizing maximal path interval, achieving the iso-parametric tool-path planning method and the iso-scallops tool-path planning method. It is very important and can be widely used to promote the machining efficiency and the quality of the machining sculptured surface in navigation apparently.
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