Reconstruction Method of Lateral Information of Three-axis Tool Trajectory Surface Based on Projection Algorithm

Abstract

The invention belongs to the technical field of computer-aided machining, and discloses a reconstruction method of three-axis tool track curved surface transverse information based on a projection algorithm. The reconstruction method comprises the steps of: (1) recording an index of each cutter location point according to a cutter location file, and storing the indexes according to a KD-Tree structure; (2) and searching for an adjacent rail projection point of each cutter location point based on the data stored in step (1), and subjecting each adjacent rail projection point and the corresponding cutter location point to pairing and storage, so as to obtain transverse information of a tool track curved surfaces formed by all the cutter location points and the corresponding adjacent rail projection points through pairing, wherein the adjacent rail projection points are points closest to a seed point on adjacent tool tracks, and the tool track curved surface is a curved surface containingall the cutter location points in tool tracks. The reconstruction method does not need to reconstruct the curved surface, reduces the calculation burden, considers the transverse information of the tool tracks, and has good optimization effect and high applicability.

Description

technical field [0001] The invention belongs to the technical field related to computer-aided processing, and more specifically relates to a method for reconstructing lateral information of a three-axis tool track curved surface based on a projection algorithm. Background technique [0002] At present, CNC machining is widely used in the machining of complex curved surface parts. Common complex surface parts include aircraft fuselage, propeller blades, mobile phone mold contour surfaces, steam turbine blades, automobile bodies, etc. In NC machining, the quality of the tool path greatly affects the quality of the machined surface, and how to optimize the tool path reasonably and comprehensively is also a research hotspot in the field of NC machining. [0003] In general, only a single trajectory is considered in the process of tool trajectory calculation and optimization, that is, only the longitudinal (feed direction) factors along the machining trajectory direction are con...

AI Technical Summary

Problems solved by technology

The original two-dimensional machining surface information degenerates into one-dimensional broken line information, which in turn leads to inconsistent horizontal depth of cut and inconsistent lateral speed in the generated tool trajectory.

Images