整体叶盘弹性磨具抛光轨迹关键规划方法

为使得弹性磨具(砂布轮)在抛光中和叶片型面有效切合,提高抛光质量和抛光效率,研究了弹性磨具抛光轨迹规划方法,给出了抛光行距、抛光步长、刀轴矢量的计算方法。该抛光轨迹规划方法使得柔性主轴机构在抛光过程中保持合理的位姿,确保弹性磨具不仅与叶片型面有效贴合,而且使得弹性磨具抛光力方向与抛光点位法矢方向基本一致。试验结果表明:抛光后叶片表面粗糙度小于0.4μm,叶型轮廓度在公差范围内,能够满足整体叶盘叶片型面抛光要求。

Path Programming Method of Blisk Blade Using Elastic Grinding Tool

In order to make the elastic grinding tool(abrasive cloth wheel) fit effectively with the blade profile in the polishing process and polishing quality and efficiency can be improved, a polishing path programming method of the elastic grinding tool was studied, polishing spacing, polishing step size and cutter-axis vector were given. This polishing path programming method makes it possible for the flexible spindle mechanism keeps a reasonable pose during the polishing process so that the elastic grinding tool can not only effectively fit with the blade profile but also the polishing force direction of the elastic grinding tool is basically identical with normal vector direction of the polishing point.The polishing test results indicate that: after polishing, blade surface roughness is smaller than 0.4μm and blade profile tolerance is within the tolerance zone. It could satisfy blisk blade profile polishing requirements.