关键词: 五轴加工, 飞边清理, 示教编程, 样条插值

Abstract: Aiming at the five-axis machining operation of rough castings deburring in automobile industry,a teaching-programing technology for spatial curve based on ordinary five-axis machine tools was proposed.Some typical key points of spatial contour curves on the part were obtained through machine tools in a certain way,and five-axis kinematic model was used to transfer these points into the cutting location points and the tool orientation vectors in the work-piece coordinate system.The accumulated chord length cubic spline method was applied to obtain spatial curve interpolation and tool orientation smoothing,thus the original contour curve was approached by a series of continuous linear segments.Five-axis inverse kinematics was used to obtain the translation or rotation amplitude of every axis on the machine tool,and output the standardized program code was output.The result of NC-Simulation in Vericut testified the feasibility of teaching-programing method.Furthermore,an experiment of exhaust manifold rough casting deburring was successfully conducted on a five-axis machine tool.The traditional NC-programming procedure was simplified and diversified.

Key words: five-axis machining, rough castings deburring, teaching-programing, spline interpolation