Machine tool self-adaptive control method considering flutter suppression

A technology of adaptive control and chatter, which is applied in the direction of computer control, program control, general control system, etc., can solve the problems of lack of systematicness and lack of chatter suppression in adaptive control methods, so as to improve processing efficiency and suppress cutting chatter Vibration, the effect of saving production time and cost

Active Publication Date: 2020-09-22
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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  • Machine tool self-adaptive control method considering flutter suppression
  • Machine tool self-adaptive control method considering flutter suppression
  • Machine tool self-adaptive control method considering flutter 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 self-adaptive control method considering flutter suppression. A spindle motor power signal and a spindle vibration signal in the numerical control machining process are monitored in real time, real-time self-adaptive regulation and control are conducted on the feeding speed and the spindle rotating speed based on the spindle power signal and the spindle vibration signal, and normal machining is not affected in the whole signal collecting process. According to the machine tool self-adaptive control method considering chatter suppression, the machining efficiency can be effectively improved, flutter generated in the machining process can be monitored and suppressed, the machining quality is improved to the maximum extent on the basis that the machiningefficiency is improved, the service life of a cutter and a machine tool can be prolonged, and the production cost is reduced.

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 Applications(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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