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A quantitative evaluation method for the health degree of ball screw of CNC machine tool

A ball screw, quantitative evaluation technology, used in measuring/indicating equipment, metal processing mechanical parts, metal processing equipment, etc. Maintenance and management scheme, convenient modification of parameters, and improved compatibility

Active Publication Date: 2021-12-28
东莞先知大数据有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The ball screw is an important precision part of the machine tool. It has an obvious role in ensuring the machining accuracy during processing. Its aging and health directly affect the yield of the product. The faults caused by the ball screw are various and there is no fixed Mode, some are gradual failures, and the failures become more and more serious with the use of time; sometimes it is sudden failures, generally without obvious symptoms
These failures are caused by various unfavorable factors and the interaction of the outside world. Once a failure occurs, it will affect the quality of the product, and seriously cause machine tool shutdown and factory shutdown, which will seriously affect the production of enterprises.

Method used

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  • A quantitative evaluation method for the health degree of ball screw of CNC machine tool
  • A quantitative evaluation method for the health degree of ball screw of CNC machine tool
  • A quantitative evaluation method for the health degree of ball screw of CNC machine tool

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Embodiment Construction

[0037] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, and are not intended to limit the protection scope of the present invention.

[0038] S1, calculate the characteristic index after removing the noise from the collected vibration signal and voltage signal generated by the ball screw in the working state of the machine tool, and then obtain the current health index of the equipment according to the formula;

[0039] In the step S1, the parameter C T = 1.5C F =0.78C I =2.31×10 -4 C U =0.17C S =1.58

[0040] Calculate AI=3.32×10 -3 SI=1062 RI=1.03

[0041] C=1850N s=AI×(SI+C×N -1 )+RI=10.7

[0042] The calculated health index h is 89.3;

[0043] S2, substituting the health index into the formula to solve the equation to obtain the service life of the ball screw of the current equipment;

[0044] In the step S2, the ...

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Abstract

The invention discloses a method for quantitatively evaluating the health degree of a ball screw of a numerically controlled machine tool; S1 is to calculate the characteristic index after removing the noise from the collected vibration signal and voltage signal generated by the ball screw in the working state of the machine tool, and then obtain the current state of the equipment according to the formula The health index; S2, put the health index into the formula to solve the equation to get the service life of the ball screw of the current equipment; S3, put the service life into the formula to get the health prediction formula of the equipment. The invention can predict the health status of the machine tool ball screw and perform quantitative display, prevent equipment failure in advance, prolong the working cycle of the equipment, avoid the economic loss of the factory due to untimely maintenance of parts, and can be applied to various working environments. wide.

Description

technical field [0001] The invention relates to the technical field of numerical control machining and the technical field of data analysis, in particular to a quantitative evaluation method for the health degree of a ball screw of a numerical control machine tool. Background technique [0002] The ball screw is an important precision part of the machine tool. It has an obvious role in ensuring the machining accuracy during processing. Its aging and health directly affect the yield of the product. The faults caused by the ball screw are various and there is no fixed Modes, some are gradual failures, and the failures become more and more serious with the use of time; sometimes they are sudden failures, generally without obvious symptoms. These failures are caused by various unfavorable factors and the interaction of the outside world. Once a failure occurs, it will affect the quality of the product, and seriously cause the shutdown of the machine tool and the factory, which w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q17/00
CPCB23Q17/00B23Q17/007B23Q17/008
Inventor 梁帆余旸吴书睿
Owner 东莞先知大数据有限公司
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