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Diagnosis method for feed shaft assembly faults based on instruction domain analysis

A diagnostic method and feed shaft technology, applied in the direction of machine gear/transmission mechanism testing, etc., to achieve the effects of good stability, reduced labor intensity, and improved diagnostic accuracy

Inactive Publication Date: 2017-01-11
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a method for diagnosing assembly faults of feed shafts based on command domain analysis, by collecting the internal electronic control data of the numerical control system, combining the method of command domain analysis and constructing eigenvectors Discriminant model, thereby solving the technical problem of machine tool feed shaft assembly quality diagnosis

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  • Diagnosis method for feed shaft assembly faults based on instruction domain analysis
  • Diagnosis method for feed shaft assembly faults based on instruction domain analysis
  • Diagnosis method for feed shaft assembly faults based on instruction domain analysis

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0029] figure 1 It is a flowchart of the diagnostic method constructed according to the preferred embodiment of the present invention, such as figure 1 As shown, the specific implementation process of the diagnostic method of the present invention is as follows:

[0030] 1) For a specific manufacturing resource MR, run the feed axis according to a given work task, and collect the running state...

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Abstract

The invention belongs to the field of manufacturing and assembling of numerical control machine tools and discloses a diagnosis method for feed shaft assembly faults based on instruction domain analysis. The diagnosis method includes the steps that a, a machine tool runs according to a designated code G aiming at manufacturing resources to collect working task data and feed shaft running state data; b, target data is extracted from the running state data according to line numbers, and feature vectors are calculated; c, feature vector sample sets of different fault tasks are established; d, a feature vector judgment model is established; e, feature vectors of actual faults are calculated and substituted into the judgment model for classification and diagnosis. According to the method, the numerical control machine tool collects the running state data through a numerical control system, the collected data is good in stability and low in cost, mechanization and intelligence of fault diagnosis are achieved by establishing the feature vector sample sets and the judgment model, labor intensity is reduced, and detection accuracy and robustness are improved.

Description

technical field [0001] The invention belongs to the field of manufacturing and assembling of numerical control machine tools, and more specifically relates to a method for diagnosing assembly faults of feed shafts based on command domain analysis. Background technique [0002] The feed system in CNC machine tools is one of the most important subsystems in CNC machine tools. The quality of its assembly directly affects the processing quality of the workpiece, the life of the screw and the control of the cost of the machine tool. Especially for some workpieces with long processing time, the loss of the lead screw is often large. This requires that a good assembly quality be ensured when assembling the feed system of the machine tool. [0003] The existing method for testing the assembly quality of machine tools is relatively common, which is to test the workpiece, and then inspect the workpiece through three coordinates. If the workpiece is qualified, the installation is up t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02
CPCG01M13/02
Inventor 许光达周会成陈吉红胡震宇
Owner HUAZHONG UNIV OF SCI & TECH
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