摘要
针对近净成形叶片加工轨迹高效精确生成和自动调整问题,开展了前后缘、焊接区和流道底面加工轨迹规划研究,提出了数控加工程序再规划方法,加工了三件典型近净成形叶片,在保留磨抛余量后,前缘、后缘、叶盆、叶背轮廓度检测结果满足叶片精加工后状态要求;提出了基于特征线的整体叶盘流道底面加工轨迹规划算法,试验结果显示轮廓偏差-0.014~0.019 mm,算法生成的加工轨迹可克服过切,且加工轨迹的光顺性较好,满足设计要求;建立了基于特征点的理论加工型面和重构加工型面的形位对应关系,根据原加工轨迹的弦长误差和残余高度,将刀具切触点映射到重构加工型面上,实现了刀轴矢量的光顺调整。
Aiming at the problem of efficient and accurate generation and automatic adjustment of the machining trajectory of the near-net-shape blade,the machining trajectory planning of the front and rear edges,the welding zone and the bottom surface of the flow channel was studied,and the NC machining program re-planning method was proposed.Three typical near-net-shape blades were processed.After retaining the grinding and polishing allowance,the profile detection results of the leading edge,trailing edge,blade basin and blade back meet the requirements of the blade after finishing.A machining trajectory planning algorithm for the bottom surface of the blisk flow channel based on the feature line is proposed.The experimental results show that the contour deviation is-0.014~0.019 mm.The machining trajectory generated by the algorithm can overcome the over-cutting defect,and the smoothness of the machining trajectory is good,which meets the design requirements.The shape-position correspondence between the theoretical machining surface and the reconstructed machining surface based on the feature points is established.According to the chord length error and residual height of the original machining trajectory,the tool contact point is mapped to the reconstructed machining surface,and the smoothing adjustment of the tool axis vector is realized.
作者
武洵德
丁悦
付余
WU Xunde;DING Yue;FU Yu(AVIC Manufacturing Technology Institute,Beijing 100024,China)
出处
《组合机床与自动化加工技术》
北大核心
2025年第11期63-68,74,共7页
Modular Machine Tool & Automatic Manufacturing Technique
关键词
轨迹规划
程序再规划
特征线
轨迹光顺
trajectory planning
program replanning
characteristic line
smooth trajectory
作者简介
武洵德(1995-),男,工程师,研究方向为先进制造技术,(E-mail)1092244874@qq.com。
