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CN-121979101-A - Deviation real-time monitoring system for 3D (three-dimensional) re-engraving printing forming process

CN121979101ACN 121979101 ACN121979101 ACN 121979101ACN-121979101-A

Abstract

The invention belongs to the technical field of 3D printing, in particular to a deviation real-time monitoring system for a 3D repeated engraving printing forming process, which comprises a three-dimensional reference feature extraction module, a printing interlayer deviation sensing module, a real-time feedback regulation and control module, a repeated engraving stability hidden danger output module and a user control management terminal; according to the invention, a high-precision reference model is constructed through the three-dimensional reference feature extraction module, the interlayer deviation sensing module is used for comprehensively calculating and accurately capturing interlayer deviation, the real-time feedback regulation and control module is used for dynamically regulating equipment and environmental parameters according to deviation values, the hidden danger output module for the re-engraving stability is used for studying and judging potential risks and early warning, the re-engraving printing performance evaluation module is used for controlling the product qualification rate and the running state of the equipment from the whole layer, the real-time monitoring, accurate regulation and control and hidden danger prejudgement of the 3D re-engraving printing deviation are realized, the product failure rate is remarkably reduced, the manual intervention cost is reduced, and meanwhile, the centralized management and control of a user are facilitated, and the intellectualization and reliability of the 3D re-engraving printing are comprehensively improved.

Inventors

  • YANG QIMING

Assignees

  • 宜兴市中超利永紫砂陶有限公司

Dates

Publication Date
20260505
Application Date
20260122

Claims (10)

  1. 1. The deviation real-time monitoring system for the 3D re-engraving printing forming process is characterized by comprising a three-dimensional reference feature extraction module, a printing interlayer deviation sensing module, a real-time feedback regulation and control module, a re-engraving stability hidden danger output module and a user control management terminal; the three-dimensional reference feature extraction module is used for constructing a three-dimensional reference feature model, the printed interlayer deviation sensing module acquires geometric form, size data and printing environment parameters of each printed layer in the 3D repeated engraving printing process in real time, and the geometric form, the size data and the printing environment parameters are compared with the three-dimensional reference feature model to calculate the comprehensive deviation value of each printed layer; The real-time feedback regulation and control module receives the comprehensive deviation value of the printing layer, adjusts the processing parameters and the printing environment parameters of the 3D printing equipment in real time based on a preset regulation and control rule and a three-dimensional reference characteristic model, and the stability hidden danger output module analyzes the stability hidden danger in the 3D re-engraving printing process and sends the stability hidden danger to the user control management terminal when a stability obstructing signal is generated.
  2. 2. The deviation real-time monitoring system for 3D photolithography printing forming process according to claim 1, wherein the operation process of the three-dimensional reference feature extraction module is specifically as follows: noise filtering is carried out on the received teapot original three-dimensional data, then a characteristic point set of the core part is screened out through a self-adaptive threshold screening algorithm, and a B spline curve is adopted to carry out contour fitting on the characteristic point set aiming at the geometric form of each core part, so that a smooth contour curve of the core part is obtained; based on the fitted contour curve, the key size parameters of each core part are calibrated, the shrinkage proportion is reserved in combination with different preset parts, the shrinkage compensation coefficient of each core part is obtained according to the key size parameters, and finally a complete three-dimensional reference characteristic model is constructed.
  3. 3. The deviation real-time monitoring system for 3D photolithography printing forming process according to claim 1, wherein the specific operation process of the printing interlayer deviation sensing module comprises: and (3) analyzing and calculating to obtain a comprehensive deviation value delta i of the ith layer, judging whether the comprehensive deviation value delta i exceeds a preset deviation threshold in real time in the calculation process, if the comprehensive deviation value delta i does not exceed the preset deviation threshold, continuously collecting the next layer of data and carrying out deviation calculation, and if the comprehensive deviation value delta i exceeds the preset deviation threshold, marking the layer as a deviation abnormal layer.
  4. 4. The deviation real-time monitoring system for 3D photolithography printing forming process according to claim 3, wherein the analysis and calculation method of the comprehensive deviation δi is specifically as follows: When the 3D printing equipment starts to print the teapot work, the acquired contour form data of the ith layer is compared with contour curves of corresponding layers in the three-dimensional reference feature model, and geometric shape deviation of the ith layer is obtained through Euclidean distance calculation; Acquiring a temperature influence coefficient corresponding to an ith layer of printing material, calculating a difference value between an actual printing temperature and a standard printing temperature, acquiring a humidity influence coefficient corresponding to the ith layer of printing material, calculating a difference value between actual printing humidity and standard printing humidity, and calculating by a preset comprehensive deviation calculation formula to obtain a comprehensive deviation value of the ith layer.
  5. 5. The deviation real-time monitoring system for a 3D photolithography print forming process according to claim 1, wherein the specific analysis process of the photolithography stability hidden danger output module comprises: And if the abnormal layer detection value does not exceed the preset abnormal layer detection threshold, obtaining a printing stability risk table condition value through weighting and summing the abnormal layer detection value, the printing layer deviation expression value and the printing layer deviation table amplitude value, and if the printing stability risk table condition value exceeds the preset printing stability risk table condition threshold, generating a stability blocking signal.
  6. 6. The deviation real-time monitoring system for the 3D photolithography print forming process according to claim 5, wherein if the printing stability table condition value does not exceed a preset printing stability table condition threshold value, the calibration characteristic value is obtained by performing weighted summation calculation on the effectiveness detection value, the calibration ratio table value and the calibration ratio amplitude value, if the calibration characteristic value exceeds the preset calibration characteristic threshold value, the corresponding potential influence parameter is marked as a hidden danger associated parameter, and if the hidden danger associated parameter exists in unit time, a stability blocking signal is generated.
  7. 7. The deviation real-time monitoring system for a 3D photolithography print forming process according to claim 6, wherein if no hidden danger correlation parameter exists in a unit time, the influence coefficients of all the potential influence parameters are summed up to obtain a potential hidden danger output value, and if the potential hidden danger output value exceeds a preset potential hidden danger output threshold, a stability blocking signal is generated.
  8. 8. The deviation real-time monitoring system for 3D repeated printing forming process according to claim 1, wherein the user control management terminal is in communication connection with the repeated printing performance evaluation module, the repeated printing performance evaluation module is used for setting a detection period, evaluating repeated printing performance in the detection period, and sending out corresponding early warning when receiving the repeated printing performance alarm signal.
  9. 9. The deviation real-time monitoring system for 3D photolithography print forming process according to claim 8, wherein the specific analysis process of the photolithography print performance evaluation module is as follows: and (3) obtaining all the repeated printing products in the detection period, marking the occupation ratio of the repeated printing products which are judged to be unqualified after detection as repeated printing non-standard values, and generating repeated printing performance alarm signals if the repeated printing non-standard values exceed preset repeated printing non-standard thresholds.
  10. 10. The deviation real-time monitoring system for the 3D repeated printing forming process according to claim 9, wherein if the repeated printing non-standard value exceeds a preset repeated printing non-standard threshold value, the repeated printing alarm coefficient is obtained by carrying out weighted summation on the repeated printing non-standard value, the frequency stopping characteristic value and the time stopping characteristic value, if the repeated printing alarm coefficient exceeds the preset repeated printing alarm coefficient threshold value, a repeated printing performance alarm signal is generated, otherwise, a repeated printing performance normal signal is generated.

Description

Deviation real-time monitoring system for 3D (three-dimensional) re-engraving printing forming process Technical Field The invention relates to the technical field of 3D printing, in particular to a deviation real-time monitoring system for a 3D repeated engraving printing forming process. Background In the 3D re-engraving forming process of craftworks such as celebrity teapots and the like, a plurality of key links such as original scanning, three-dimensional data correction, 3D printing, female bottle neck processing, gypsum mold pouring and the like are required to be subjected, the accuracy control of the 3D printing link directly determines the geometric consistency, surface texture and structural stability of the re-engraving works and the original works, and the core requirement is based on the three-dimensional data after original scanning correction, so that the accurate control of multi-dimensional deviation and the prejudgment optimization of printing quality are realized. At present, the 3D printing deviation monitoring and regulating technology still has a plurality of defects, and is difficult to meet the severe requirements of high precision and high consistency of artwork re-engraving, for example, an AI vision detection-based 3D printing defect real-time correction system is disclosed in China patent No. CN121258946A, and the printing defects are captured and real-time intervention is carried out through AI vision detection, so that irreversible defects are avoided. However, the above technical solution of the present invention mainly identifies focusing defects, ignores coupling effects of various factors on deviation, and cannot fully capture deviation causes, so that regulation measures lack pertinence, only passively correct the existing defects, lack a multidimensional prejudgment mechanism for potential stability hazards, and also fail to construct a comprehensive performance evaluation system covering printing quality and smoothness of production, so that it is difficult to match high quality requirements of celebrity teapots and other artware on reproduction accuracy, stability and texture reduction degree, and is not favorable for fully improving the intellectualization and reliability of 3D reproduction printing. In view of the above technical drawbacks, a solution is now proposed. Disclosure of Invention The invention aims to provide a deviation real-time monitoring system for a 3D repeated engraving printing forming process, so as to solve the technical defects of the background technology. In order to achieve the purpose, the invention provides the technical scheme that the deviation real-time monitoring system for the 3D repeated engraving printing forming process comprises a three-dimensional reference feature extraction module, a printing interlayer deviation sensing module, a real-time feedback regulation and control module, a repeated engraving stability hidden danger output module and a user control management terminal; The three-dimensional reference feature extraction module extracts a core part feature vector based on three-dimensional data after teapot original scanning correction and artist exclusive tool line adaptation parameters to construct a three-dimensional reference feature model; The real-time feedback regulation and control module receives the comprehensive deviation value of the printing layer, adjusts the processing parameters and the printing environment parameters of the 3D printing equipment in real time based on a preset regulation and control rule and a three-dimensional reference characteristic model, and sends adjustment information to the user control management terminal, and the stability hidden danger output module analyzes the stability hidden danger in the 3D repeated printing process, judges whether to generate a stability obstructing signal or not through analysis, and sends the stability obstructing signal to the user control management terminal when generating the stability obstructing signal. Further, the operation process of the three-dimensional reference feature extraction module is specifically as follows: The method comprises the steps of receiving original three-dimensional data of a teapot after scanning treatment, correction of irregular parts and adjustment of contraction proportions of different parts, and simultaneously importing line profile parameters of a special tool customized for an artist; And (3) calibrating critical dimension parameters of each core part based on the fitted contour curve, reserving shrinkage ratios in combination with different preset parts, obtaining shrinkage compensation coefficients of each core part according to the critical dimension parameters, and finally integrating a core part characteristic point set, the contour curve, the critical dimension parameters and the shrinkage compensation coefficients to construct a complete three-dimensional reference characteristic model. Further, the specific