Small line segment fairing method based on space plane normal vector

Abstract

The invention provides a small line segment fairing method based on a space plane normal vector. The small line segment fairing method comprises a preset judgment angle value, a line segment processing length maximum value and a maximum allowable deviation distance. The small line segment fairing method based on the space plane normal vector comprises the following steps: 1) reading a numerical control equipment file and scanning instructions in a numerical control program one by one; 2) judging whether an instruction in the current numerical control program is a linear interpolation code or not, and if not, entering the step 1); if the code is the linear interpolation code, entering the step 3); 3) judging whether to carry out fairing processing on the current linear interpolation code line segment or not; 4) carrying out fairing processing on the current linear interpolation code line segment; and 5) judging whether an end point in the numerical control program is reached, if so, ending the operation, and if not, entering the step 1). The method has the advantages of being high in operation speed and good in machining quality.

Description

technical field [0001] The invention relates to the field of numerical control machining, in particular to a method for smoothing small line segments based on space plane normal vectors. Background technique [0002] In the field of numerical control machining, the numerical control system generally performs machining according to the path described by the NC code generated by CAM (Computer Aided Manufacturing) software. For the most commonly used linear interpolation code (G01) in the domestic NC machining industry today, its trajectory is composed of a large number of tiny straight line segments approaching the workpiece surface. When the workpiece surface is a complex curved surface, in order to meet the machining contour accuracy requirements, the CAM software The number of small line segments generated will increase significantly, and the length of the line segments will also be shortened accordingly, so it is inevitable that there will be irregularities between the cod...

AI Technical Summary

Problems solved by technology

[0003] The current smoothing method has high performance in theory, but it still encounters problems such as difficult determination of curve composition conditions, complex program implementation, and difficulty in applying to real-time numerical control systems. During the processing process, the processing speed and processing quality will be reduced. However, the ideal effect cannot be achieved in practical applications, and there is currently no smoothing method for small line segments using the normal vector of the space plane

Images