METHOD AND SYSTEM FOR TOOL WEAR MONITORING UNDER VARIABLE WORKING CONDITION BASED ON CUTTING FORCE COMPONENT DECOUPLING

Title:

METHOD AND SYSTEM FOR TOOL WEAR MONITORING UNDER VARIABLE WORKING CONDITION BASED ON CUTTING FORCE COMPONENT DECOUPLING

Document Type and Number:

WIPO Patent Application WO/2024/000720

Kind Code:

A1

Abstract:

A variable working condition tool wear monitoring method and system based on cutting force component decoupling. The method comprises: calculating a tool-workpiece engagement (TWE) area offline according to a cutter location point file; calculating the allowable cutting force of a tool at each position of the part offline; collecting spindle vibration data of a numerical control machine tool, and establishing, according to the obtained system internal data, a data set having marking tool name information; estimating the cutting force of the tool in real time on the basis of a vibration signal; calculating the cutting force which is actually increased due to tool wear and the theoretical cutting force which is allowed to the maximum extent under the constraint of part accuracy and is increased due to tool wear; and comparing the measured cutting force with the theoretical wear cutting force in real time, and if the actual tool wear degree is greater than the theoretical allowable tool wear degree, performing tool changing, otherwise, continuing to monitor the tool state until the tool wears out. Tool wear monitoring under variable load can be achieved, whether the tool wears out is determined in real time on the basis of the constraint of part accuracy, and the service life of the tool can be utilized to the maximum extent.

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Inventors:

ZHANG JUN (CN)
BAI LELE (CN)
TANG YUYANG (CN)
ZHANG HUIJIE (CN)
ZHAO WANHUA (CN)

Application Number:

PCT/CN2022/108646

Publication Date:

January 04, 2024

Filing Date:

July 28, 2022

Export Citation:

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Assignee:

UNIV XI AN JIAOTONG (CN)

International Classes:

G06F30/20; B23Q17/09; B23Q17/20

Foreign References:

CN111644900A	2020-09-11
CN110576335A	2019-12-17
CN111761409A	2020-10-13
CN114102260A	2022-03-01
US4831365A	1989-05-16

Attorney, Agent or Firm:

XI'AN TONG DA PATENT AGENCY CO., LTD. (CN)

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