Process method for evaluating trajectory quality of numerical control machining three-axis tool

Abstract

The invention discloses a process method for evaluating trajectory quality of a numerical control machining three-axis tool. The process method for evaluating the trajectory quality of the numerical control machining three-axis tool is characterized in that the process method comprises the following steps: (a) acquiring a three-axis tool trajectory sequentially and jointly formed by n discrete points, recording coordinate values of all discrete points in a machining coordinate system, and viewing each discrete point as a vector directed from a coordinate origin to a position of each discrete point; (b) calculating the overall smoothness of the trajectory of the three-axis tool by using the obtained vector matrix, and using the overall smoothness as a surface quality evaluation index during part machining; (c) calculating ideal machining time corresponding to the trajectory of the three-axis tool and using the ideal machining time as an evaluation index of machining efficiency; (d) completing the overall evaluation process of the trajectory quality of the three-axis tool. By adopting the method, the surface quality and machining efficiency of the part machined according to the trajectory of the three-axis tool can be accurately, efficiently and economically evaluated, actual machining verification does not need to be performed and thus the process method is especially applicable to the actual application places of three-axis numerical control machine tools.

Description

technical field [0001] The invention belongs to the technical field of numerical control machining, and more specifically relates to a process method for evaluating the quality of three-axis tool paths in numerical control machining, which is suitable for accurately, efficiently and economically evaluating three-axis tools without actual machining Surface quality and machining efficiency of tool path machined parts. Background technique [0002] Tool path optimization is an increasingly hot research topic in the machining industry. At present, the manufacturing process includes CAD (product design), CAM (tool path generation) and CNC (machining and forming) and other links. In general, the output of the CAM system is the tool path, but because the CAM system cannot be perfect under the current technical and theoretical conditions, it often produces low-quality tool paths. For example, in order to calculate the tool path on a given free-form surface, the CAM system has to d...

AI Technical Summary

Problems solved by technology

[0003] However, there is currently a lack of a reliable and economical simulation method for many optimized toolpaths to evaluate their effectiveness. In particular, it is difficult to judge whether the optimized toolpath is better than the original from a quantitative point of view, and how much it has improved

In the prior art, in order to obtain relevant indicators, the method of processing verification is often used, that is, to perform actual processing on an actual processing program to verify whether the optimization method is effective, but it is obvious that the method of processing verification is very costly and time-consuming, and Unavoidable errors in the processing often also affect the accuracy of the evaluation results

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