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A Machine Tool Adaptive Control Method Considering Chatter Suppression

An adaptive control and flutter technology, which is applied in computer control, program control, general control system, etc., can solve the problems of lack of flutter suppression and lack of systematicness in adaptive control methods, so as to improve the level of intelligence and reduce technology. requirements, the effect of prolonging the service life

Active Publication Date: 2021-04-20
DALIAN UNIV OF TECH
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Problems solved by technology

[0005] In order to overcome a series of problems such as the lack of systematic design of fuzzy control and the lack of chatter suppression in common adaptive control methods, this invention proposes an adaptive control method for machine tools considering chatter suppression

Method used

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  • A Machine Tool Adaptive Control Method Considering Chatter Suppression
  • A Machine Tool Adaptive Control Method Considering Chatter Suppression
  • A Machine Tool Adaptive Control Method Considering Chatter Suppression

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Embodiment Construction

[0071] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings, taking a certain type of vertical milling machine as an example to describe the implementation of the present invention in detail.

[0072] The first step is to establish a feed speed adaptive control model

[0073] This step is mainly divided into the acquisition and processing and feature extraction of spindle power data with variable cutting parameters, and the establishment and training of deep learning networks.

[0074] (1) Data acquisition, processing and feature extraction of spindle power with variable cutting parameters

[0075] Such as figure 1 As shown, the power sensor is arranged on the spindle motor (2), and its three coils are respectively set on the three power lines of the spindle motor UVW.

[0076] The machining process with variable cutting parameter...

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Abstract

The invention discloses a machine tool adaptive control method considering chatter suppression, through real-time monitoring of the power signal of the spindle motor and the vibration signal of the spindle in the process of numerical control machining, and based on the power signal and vibration signal of the spindle The rotating speed is adjusted in real time, and the whole signal acquisition process does not affect the normal processing. The adaptive control method of the machine tool considering chatter suppression can effectively improve the machining efficiency, monitor and suppress the chatter generated during the machining process, improve the machining quality to the greatest extent on the basis of improving the machining efficiency, and extend the length of the tool And machine tool life, reduce production costs.

Description

technical field [0001] The invention belongs to the technical field of intelligent manufacturing, and in particular relates to an adaptive control method of a machine tool in consideration of flutter suppression. Background technique [0002] In the traditional CNC machining process, cutting parameters such as spindle speed, feed speed, and cutting depth have been determined in the programming stage before machining, and these cutting parameters are often set conservatively by the experience of the operator or the machining process manual, and Not optimal cutting parameters. In the actual machining process, especially in the rough machining process of the blank, due to factors such as cutting parameters, uneven machining allowance, workpiece material, cutting fluid quality, tool wear and other factors, the cutting conditions are constantly changing, and the programmed cutting The parameters cannot adapt to these changes in the machining process, requiring manual adjustment ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/408
CPCG05B19/4086G05B2219/41121
Inventor 刘阔黄任杰沈明瑞班仔优秦波王永青
Owner DALIAN UNIV OF TECH
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