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A Dynamic Identification and Correction Control Method of Shape Quality in Machining Process

A processing and dynamic identification technology, applied in the direction of program control, computer control, general control system, etc., can solve the problem of non-quantitative division, evaluation of processing process quality characteristic form, dynamic control process of processing process form quality without giving, no establishment Fast and complete morphological quality dynamic identification model and other issues

Active Publication Date: 2015-10-28
XI AN JIAOTONG UNIV
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Problems solved by technology

Quality analysis mostly uses statistical process control to generate control charts and calculate process capabilities. It does not quantitatively divide and evaluate the quality feature forms of the processing process, and does not consider the dynamic identification of various workpiece forms formed by the combination of quality feature forms. A complete dynamic identification model of morphological quality; also does not give a clear and clear dynamic control process of morphological quality in the processing process

Method used

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  • A Dynamic Identification and Correction Control Method of Shape Quality in Machining Process
  • A Dynamic Identification and Correction Control Method of Shape Quality in Machining Process
  • A Dynamic Identification and Correction Control Method of Shape Quality in Machining Process

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with accompanying drawing:

[0047] A method for dynamic identification and correction control of shape quality during processing, such as figure 1 As shown, the method includes three steps: real-time tracking of quality information, dynamic identification of morphological quality, and correction control of abnormal morphologies. In the normal processing process, when the control start signal is received, the real-time tracking process of quality information and the dynamic identification process of shape quality are carried out in sequence. If the current workpiece shape is abnormal after identification, it will enter the correction processing process, that is, the abnormal shape correction control process. After the correction is completed, a correction feedback signal is sent, the correction processing process is completed, and the normal processing process is returned. The system waits for the next...

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Abstract

The invention discloses a form quality dynamical identification and modification control method in machining process. The form quality dynamical identification and modification control method in the machining process comprises the steps of (1) quality information real-time tracking, (2) form quality dynamic identification and (3) unusual form modification control, wherein the quality information real-time tracking is used for meeting the requirement that a large amount of bottom-layer data can reflect a present quality state of a workpiece form in the process of dynamic identification and modification, the form quality dynamic identification is used for carrying out data processing on acquired form quality information to acquire a dynamical quality product form, searching a form which is matched with the dynamical quality product form through an ergodic process form set and determining a belonging form type of the dynamical quality product form through similarity analysis, and the unusual form modification control is used for adopting a modification strategy ' deciding+choosing+calling' mechanism, dynamically carrying out modification control on a process exception form through a motion control unit and a motion executing mechanism. By the adoption of the form quality dynamical identification and modification control method in the machining process, the improvement of machining quality is benefited, the defects of quality is overcome in advance, quality cost is reduced, the improvement of production efficiency is benefited, off-line detection is avoided, sub-quality products can be machined again, and the economic benefit of an enterprise is improved.

Description

technical field [0001] The invention belongs to the field of dynamic quality control in the processing process, and relates to a dynamic identification and correction control method for the shape quality in the processing process. Background technique [0002] With the continuous improvement of market demand and various industries' requirements for processing quality, how to ensure high dimensional accuracy, high shape accuracy, and low surface roughness of the workpiece during processing to achieve "zero waste" has become a key issue in improving processing quality. The quality output of the machining process is affected by various process factors, such as machine tool geometry parameters, tool holder wear, various factors that cause thermal deformation and force deformation, etc. The influencing factors of the abnormal process and their complex interactions finally form the abnormal shape of quality characteristics, such as size error, shape error, etc. The morphological ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/4097B24B33/06
Inventor 要义勇赵丽萍王洁刁广州李宁李纯松
Owner XI AN JIAOTONG UNIV
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