Method for controlling machining track of numerically-controlled machine tool

Abstract

The invention relates to a method for controlling a machining track of a numerically-controlled machine tool. The method comprises the following steps of: determining the number N of positions to be smoothly machined; initialing N displacement storage units and storing the planned displacement of current movement in a machining plan into a current displacement storage unit; taking an average value of the N displacement storage units as the actual displacement of the current movement; and circulating the process to finish the machining. By utilizing the method disclosed by the invention, the displacement in single time of movement in the machining plan is realized by being dispersed into N times of movements so that the displacement variables among multiple times of close movements are reduced, the fitting degree of a machined free-form surface is better, and the degree of finish of the machined surface is higher; therefore, with the method disclosed by the invention, under the condition that a machining file does not need to be lengthened, the degree of finish of the machined free-form surface is increased, the increase of data processing amount of the numerically-controlled machine tool is avoided, and the cost of the numerically-controlled machine tool is reduced under the condition that application requirements are same.

Description

technical field [0001] The invention relates to the field of control of numerical control machine tools, in particular to the field of control methods for adjusting machining effects of numerical control machine tools, in particular to a method for controlling machining tracks of numerical control machine tools. Background technique [0002] Modern technology has gradually increased the requirements for the processing effect of CNC machine tools, especially for the smoothness of free-form surfaces. In the CNC machine tool control system, there are only two workpiece processing methods: straight line and arc. Free-form surfaces need to be processed. Generally, processing files are generated by special CAM software, and they are fitted by continuous short straight line segments. The finish depends on the accuracy when generating processing files. Aiming at the actual requirement of high finish, the common solution is to improve the precision of the generated processing files. ...

AI Technical Summary

Problems solved by technology

This method leads to a sharp increase in the data of the generated processing files. If it is necessary to increase the processing file with a general accuracy of 0.2 wires to an accuracy of 0.1 wires, the length of the processing file will be doubled.

And the length of the processing file increases, the data processing capacity of the CNC machine tool system also increases, the requirements for the system software and hardware increase, and the cost of the CNC machine tool increases accordingly

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