Profile curve numerical control code generation method based on particle swarm algorithm and numerical control machine tool

Abstract

The invention relates to a profile curve numerical control code generation method based on a particle swarm algorithm and a numerical control machine tool. The profile curve numerical control code generation method based on the particle swarm algorithm is used for a numerical control machine tool, and includes the steps of: (1) building a mathematical model for a profile curve of a machining workpiece in a numerical control system; (2) using the particle swarm algorithm to program iterative computation in a computer, and obtaining an approximation node; (3) generating and outputting a machining curved surface tool path numerical control code of a machining tool; (4) putting the machining workpiece on a machining table, and positioning and fixing the machining workpiece through a clamp; (5) providing a tool by a tool magazine and performing tool setting, and positioning the position of a machining starting point; and (6) using the machining tool to machine the machining workpiece on the machining table according to the acquired machining curved surface tool path numerical control code. The invention provides the profile curve numerical control code generation method based on the particle swarm algorithm which is applied to the numerical control machine tool, thereby enabling the machining tool to effectively and accurately complete numerical control machining of the profile curve of the workpiece, improving work efficiency and quality of the numerical control machine tool, the operation is simple and direct, and the machining precision is high.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a particle swarm algorithm-based numerical control code generation method for contour curves and a numerical control machine tool. Background technique [0002] CNC machine tool is an automatic machine tool equipped with a program control system. With the rapid development of mechanical and electronic technology, CNC machine tool equipment has been widely used in the field of mechanical processing. After decades of development, the technical level has been greatly improved. The functions of CNC machine tool products are becoming more and more perfect, and the specifications are becoming more and more complete, but the changes and enrichments in functions and specifications alone cannot meet the processing needs. [0003] At present, in the NC machining of the contour curve of the workpiece by using the NC machine tool, a straight line or an arc is generally used to ...

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Problems solved by technology

The main methods for approximating nodes with straight lines of free curves include equal distance, equal chord length and equal error approximation nodes. Among them, the method of approximating nodes with equal error straight lines can make the errors of all approximation line segments equal, and can guarantee the processing error of the approximation nodes, but in actual In computer applications, the programming of geometric algorithms for free curves and other error straight line approximation nodes is complicated and difficult to implement directly. For complex curves, it is difficult to effectively determine the optimal processing surface trajectory. It can only be realized by numerical analysis and processing. The machining process of the CNC machine tool for the contour curve of the workpiece is cumbersome, the precision of the machining surface trajectory is low, and the operation is complicated. Therefore, the geometric algorithm that uses free curves and other error straight lines to approximate nodes is not well applied to the machining of CNC machine tools. among

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