开式整体导叶轮的多轴联动高效数控加工工艺技术研究

摘要

针对开式整体导叶轮的结构特点,提出了一套高效的多轴联动数控加工工艺技术。该技术将导叶轮的加工规划为粗加工和精加工两个阶段：首先利用型腔铣高效去除毛坯的大余量,然后利用基于加工过程中的工件的3＋2轴的加工方式进行半精加工,该方法有效地解决了曲面局部余量分布不均的现象;重新规整驱动参数面的u、v参数,结合参数线加工路径规划方法的特点,利用边界点插补来控制刀轴矢量的方式进行精加工。实践表明：该工艺技术除了提高加工质量外,还能有效缩短导叶轮生产周期。%According to the characteristics of the open-integrated impeller, a highly efficient ning processing technology was proposed. The processing was divided into rough machining multi-axis N/C maehi- and finish machining： the roughing is conducted through processing method of 3 ＋ 2 axis based on IPW and cavity milling, so that big margins can be removed and uneven distribution of local margins can be solved, while the finishing through reset- ting the u and v parameter lines of the driving surface, and through controlling the tool-axis vector with the interpo- lation of the boundary point. The machining practice shows that this processing technology can improve the process- ing quality and shorten the manufacturing cycle efficiently.