Precision error control based orbit segment transfer processing algorithm for numerical control machine tool

Abstract

The invention provides a precision error control based orbit segment transfer processing algorithm for numerical control machine tool; elaboration and analysis are performed aiming at the current two transfer processing methods of connecting the orbit segment with a straight line and connecting the orbit segment with an arc and the error situation; for the error of the transfer processing of the orbit segment and the straight line, the change relation of the generated error and an interpolation surplus and an included angle is analyzed according to the difference of the velocity vector included angle; the transfer processing method and the error calculation of the orbit segment and the arc are elaborated based on two aspects of whether the orbit segment and the arc are on the same plane and the included angle of the orbit segment and the tangent line of the arc. Compared with the prior art, the analysis for the transfer processing method and the error are more complete; furthermore, the analysis for various transfer situations is more detailed and more thorough, and therefore, the higher transfer precision and the higher transfer velocity can be obtained.

Description

technical field [0001] The invention relates to a track segment transition processing algorithm based on precision error control for a numerical control machine tool, belonging to the technical field of computer numerical control. Background technique [0002] Because any workpiece, no matter what shape it is, is ultimately composed of a segment of trajectory segments (arc, straight line), there are transfer points between the trajectory segments, resulting in the problems of transfer transition method and transfer accuracy. In order to ensure the accuracy of the workpiece, some scholars have proposed to perform acceleration and deceleration processing between each trajectory segment, that is, each segment undergoes three processes of acceleration, uniform speed, and deceleration, which will cause frequent start and stop of the machine tool, and the feed speed is too slow. The expected speed cannot be guaranteed, and the processing quality is not ideal. Some scholars interp...

AI Technical Summary

Problems solved by technology

It is the main connection processing method currently used, but so far it is mainly for the connection processing between straight line segments, and it is less involved in the connection processing of straight lines and arcs. In-depth analysis and research cannot be carried out, and it is often aimed at the connection processing of small line segments, but it is not necessarily very suitable for the connection processing of large trajectory segments

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