Method for achieving online inhabitation of processing fluttering through intelligent control of rotation speed of spindle

Abstract

The invention provides a method for achieving online inhabitation of processing fluttering through intelligent control of rotation speed of a spindle, and belongs to the field of intelligent processing. The method comprises steps of step 1, when a spindle is processed at the initial rotation speed of n0, carrying out real-time monitoring on milling processing states, analyzing detection results and determining whether fluttering occurs or not; and step 2, when failing to identifying occurrence of the fluttering, keeping the original rotation speed of the spindle of a machine tool unchanged, repeating execution of the step 1, and when identifying the occurrence of the fluttering, adjusting the rotation speed of the spindle to the new spindle optimal rotation speed nnew, and carrying out fluttering inhabitation at the early stage of the occurrence of the fluttering. According to the invention, online inhibition of fluttering in milling processing is achieved through intelligent control of the rotation speed of the spindle; when the fluttering is monitored, a numerical control machine tool will adjust the rotation speed of the spindle to be the new rotation speed nnew through which stable cutting can be achieved by use of an adaptive control algorithm provided by the invention, so problems and disadvantages in a passive method for inhibiting the fluttering based on random range of the rotation speed of the spindle in a certain range in a normal cutting process are solved.

Description

technical field [0001] The invention belongs to the field of intelligent processing, and mainly relates to an adaptive control guarantee technology for a stable cutting process, specifically a method for realizing online suppression of machining chatter through intelligent control of the spindle speed. Background technique [0002] High-speed processing technology has high processing efficiency and surface quality, so it is gradually and widely used in actual production and processing. Among them, high-speed milling processing technology is more widely used, including aerospace, automobile processing, mold processing, etc. However, due to the inherent properties of milling, it is inevitable that chatter will occur during the cutting process. On the one hand, it will seriously affect the surface processing quality of the parts, and on the other hand, it may cause tool wear and even damage to the spindle. Chatter suppression technology has attracted a lot of attention. One o...

AI Technical Summary

Problems solved by technology

This kind of chatter suppression method only needs to control the spindle speed, which is relatively easy to implement. However, for high-speed milling, the continuous change of the spindle speed within a certain range puts higher requirements on the spindle controller on the one hand, and on the other hand It is easy to cause large fluctuations in cutting force and cause greater vibration

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