Application of acceleration linear high-speed interpolation algorithm in numerical control machine

Abstract

The invention provides application of an acceleration linear high-speed interpolation algorithm in a numerical control machine for calculating the connecting speed of a processing path. The application relates to two problems, one is the servo capability of the machine, which is determined by the performance of the machine per se, and the other is an included angle between two adjacent paths, wherein for the included angle between the two adjacent paths, if the included angle between the two paths is more than 90 degrees, the connecting speed must be set to zero; if the included angle is between 0 and 90 degrees, the corresponding speed is calculated by using the included angles between the two paths, the connecting speed at the moment is not zero, and the connecting speed is higher while the included angle is smaller; and if the included angle is zero, and speed is not reduced at the point, which is the maximum speed permitted by the machine. With respect to the acceleration linear algorithm without high-speed connection, the connecting speed is calculated according to the included angle without reducing to zero each time, and is hardly reduced particularly when the included angle is smaller, so that the processing efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of numerical control machine tool control. Especially in the field of linear interpolation algorithm. Background technique [0002] In the field of CNC machine tool control technology, the acceleration linear interpolation algorithm has many advantages. Because the algorithm is simple to implement and has high processing efficiency, it has been widely used in the CNC system. However, currently existing operating procedures lack high-speed connections, and the start and end speeds of each machining path are set to zero. This will inevitably lead to the following two problems: first, because the processing speed is not uniform, the processing effect is relatively poor, which is especially obvious in thermal cutting such as laser engraving and plasma engraving; second, because the speed must be reduced every time to zero, so that the processing efficiency will be very low, especially for the milling toolpath ...

AI Technical Summary

Problems solved by technology

However, the existing operating procedures lack high-speed connections, and the start and end speeds of each machining path are set to zero.

This will inevitably lead to the following two problems: first, because the processing speed is not uniform, the processing effect is relatively poor, which is especially obvious in thermal cutting such as laser engraving and plasma engraving; second, because the speed must be reduced every time to zero, so that the processing efficiency will be very low, especially for the milling toolpath whose path is composed of a large number of tiny line segments, without high-speed connection, the processing efficiency is almost unacceptable

However, simply setting a connection speed will cause the machine tool to vibrate because the servo capability of the machine tool is not satisfied on some axes, which will affect the processing effect and the life of the machine tool

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