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WO2020179763A1 - Objet moulé tridimensionnel - Google Patents

Objet moulé tridimensionnel Download PDF

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Publication number
WO2020179763A1
WO2020179763A1 PCT/JP2020/008818 JP2020008818W WO2020179763A1 WO 2020179763 A1 WO2020179763 A1 WO 2020179763A1 JP 2020008818 W JP2020008818 W JP 2020008818W WO 2020179763 A1 WO2020179763 A1 WO 2020179763A1
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WO
WIPO (PCT)
Prior art keywords
code
dimensional
dimensional code
present
design
Prior art date
Application number
PCT/JP2020/008818
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English (en)
Japanese (ja)
Inventor
貴由 中野
秀房 玉岡
卓也 石本
幸司 萩原
拓哉 井手
Original Assignee
国立大学法人大阪大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 国立大学法人大阪大学 filed Critical 国立大学法人大阪大学
Publication of WO2020179763A1 publication Critical patent/WO2020179763A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code

Definitions

  • the present invention relates to a three-dimensional object, and more particularly to a three-dimensional object having an identification mark.
  • the present invention is to provide a three-dimensional object having a three-dimensional code capable of comprehensive management from design to supply.
  • the inventors have conducted diligent research on mutual reading of a two-dimensional code and a three-dimensional code, and as a result, found a three-dimensional object of the present invention.
  • the three-dimensional object of the present invention is a three-dimensional object having a three-dimensional code, and the three-dimensional code can be read as a corresponding two-dimensional code.
  • the three-dimensional code is a conversion of the two-dimensional code given at the time of design.
  • the dimensions of the cells constituting the three-dimensional code are within the range of the tolerance for discrimination of the cells at the time of reading.
  • the size of the cell is 0.4 mm or more.
  • the corresponding two-dimensional code is at least one selected from a two-dimensional bar code (QR code (registered trademark)), a data matrix code, a bar code, and a dot code. It is characterized by being a seed.
  • QR code registered trademark
  • the three-dimensional model is a medical-related product, an aerospace-related product, an in-vehicle-related product, a semiconductor-related product, or a furniture product from the viewpoint of quality control, customizability, and the like. It is characterized by being.
  • the given code can be read in both two and three dimensions, it has an advantageous effect that it can be managed by a single identification code.
  • the three-dimensional model of the present invention has an advantageous effect of being able to provide an important technique for establishing traceability that can be individually recognized in the realization of mass customization that is completely different from the conventional mass production.
  • individual needs, design, production, supply chain, and delivery are surely linked, and regardless of the product, in the future high load value of the product by mass customization, from design to supply, etc. are integrated. It has the advantageous effect of being able to manage.
  • FIG. 1 is a schematic view of a custom bone plate (implant) to which an individual identification code is added during metal additive manufacturing according to an embodiment of the present invention.
  • FIG. 2 shows a side view of the custom bone plate (implant) shown in FIG.
  • FIG. 3 is a diagram showing an example of the uneven surface of the code of the data matrix.
  • FIG. 4 is a diagram showing an example when the uneven surface of the data matrix of FIG. 3 is changed in reverse.
  • FIG. 5 is an enlarged view of the three-dimensional code stamped on the custom bone plate (implant) shown in FIG.
  • FIG. 6 is a view showing a plan view and a side view of the three-dimensional code in one embodiment of the present invention.
  • FIG. 7 is a diagram showing the size of a three-dimensional code in one embodiment of the present invention.
  • the three-dimensional model of the present invention is a three-dimensional model having a three-dimensional code, and the three-dimensional code is readable by the corresponding two-dimensional code.
  • mass-produced products were the mainstream, and therefore, they were managed by different identification markers at the time of design, production, after supply, and the like. In other words, the products were controlled by rods (models), and individual identification was very rare in mass production.
  • rods models
  • individual identification was very rare in mass production.
  • the present invention is a necessary technique in order to meet new demands that are not in the conventional demand. ..
  • the three-dimensional model of the present invention which is a three-dimensional model having a three-dimensional code and the three-dimensional code can be read by the corresponding two-dimensional code
  • the three-dimensional code is read by a two-dimensional code reading reader. Can be read.
  • the three-dimensional code is not particularly limited, but since an object can have three size indexes of "width”, “depth”, and “height", the "width", It can be a code defined by "depth” and "height". It should be noted that the three-dimensionalization of the two-dimensional code can effectively exert its effect especially on a product such as a curved three-dimensional object. That is, even if the two-dimensional code can be two-dimensionally attached to the curved portion, it may not be recognized by the reader for reading the two-dimensional code. In such a case, the present invention in which the two-dimensional code is three-dimensionalized The three-dimensional model can be effective. That is, even if the reader cannot read the two-dimensional code, the three-dimensional code can be read.
  • the code reading should be optimized by shining light of different colors from various angles instead of using a general 2D barcode reader to read the 3D code. It is also possible to read by finding out the reading conditions that match the additive manufacturing product by using a programmed device that automatically searches for conditions. Such reading is also within the scope of the present invention, and can be a three-dimensional code readable by the corresponding two-dimensional code in the present invention.
  • the three-dimensional code can be read as a corresponding two-dimensional code. That is, normally, for a specific two-dimensional code, the code is read by the reading reader of the two-dimensional code and a specific output is performed, but in the present invention, it is given to the three-dimensional model of the present invention. Since the three-dimensional code corresponds to the two-dimensional code, even though it is a three-dimensional code, it is possible to read the code by a reader for reading the two-dimensional code. That is, in the present invention, the two-dimensional code can be made three-dimensional, and the three-dimensional code can be added to the three-dimensional object, and the added three-dimensional code is the original. It can be read by a two-dimensional code reading reader.
  • this three-dimensional individual recognition code on the product at the time of manufacturing, it is possible to manage from design to supply by a single individual identification code. That is, in the present invention, the two-dimensional code mainly used at the time of design is made three-dimensional by examining the optimum uneven shape, and the three-dimensional identification code is given to the product from the design. From supply to supply, a single individual identification code enables comprehensive management.
  • the source of the two-dimensional code which is the origin of the three-dimensional code
  • a two-dimensional code assigned at the time of diagnosis, custom design custom outer shape design, internal shape design, material design, etc.
  • the three-dimensional code is a conversion of a two-dimensional code given at the time of design.
  • the original two-dimensional code may not be available.
  • a three-dimensional code is used, but a three-dimensional code that can be made into a two-dimensional shape can be used if the imprint of unevenness is not taken into consideration. By doing so, even if the information of the three-dimensional code is converted into two-dimensional even if the information is started with the three-dimensional code, the information can be read by the reader for reading the two-dimensional code. Comprehensive management is possible with an identification code.
  • the dimensions of the cells constituting the three-dimensional code are within the range of the tolerance for discrimination of the cells at the time of reading.
  • the cell forming the three-dimensional code can mean the smallest unit (a black and white square in the case of the two-dimensional code) forming the three-dimensional code, and the cell size is the size of the cell. be able to. That is, the dimensions of the cells constituting the three-dimensional code depend on the modeling accuracy when the three-dimensional code is modeled, and the modeling accuracy is preferably within the range of the tolerance for cell discrimination. By doing so, it is possible to obtain information from a code that has been converted into a more accurate three-dimensional code by a two-dimensional code reading reader.
  • the size of the cell is set to 0. From the viewpoint of decoration for identification due to the difference in shading and brightness generated by the unevenness when three-dimensionally coded. It is characterized by being 4 mm or more. As for cells, for example, 0.8 mm cells tend to be easier to discriminate than 0.4 mm cells. Since the modeling accuracy is within the allowable error range for the cell discrimination, the larger the cell size, the easier the discrimination becomes. On the other hand, in general products, it is general to want to print the management code of the manufacturer, which is not directly related to the performance, as small as possible. Therefore, if it is readable, it tends to be preferable to set the minimum dimension as far as possible.
  • the preferable cell size is 0.4 mm or more on one side. It is the one.
  • the corresponding two-dimensional code is at least one selected from a two-dimensional bar code (QR code (registered trademark)), a data matrix code, a bar code, and a dot code. It is characterized by being a seed.
  • the data matrix code can be preferably used as a code more suitable for discrimination in additive manufacturing. This is because three position detection patterns (finder patterns) of a two-dimensional barcode have a strict regularity of 1:1:3:1:1, while a solid border is used to identify the data matrix code. This is due to the simple structure that recognizes the so-called L-shaped shape.
  • the three-dimensional model is a medical-related product, an aerospace-related product, an in-vehicle-related product, a semiconductor-related product, or a furniture product from the viewpoint of quality control, customizability, and the like. It is characterized by being.
  • the three-dimensional shape recognition a method using reflection or a method of recognizing the three-dimensional shape from the shadow by irradiating the unevenness with a light source from various directions can be used.
  • a reader that converts the recognized three-dimensional shape into a plane shape and reads it as a two-dimensional code can also be used.
  • the individual identification code given at the time of design can be applied to the product.
  • a two-dimensional individual identification code is assigned when designing each design that meets individual needs.
  • an existing code such as a two-dimensional code bar code, a two-dimensional bar code (QR code (registered trademark)) or a dot code is assumed.
  • Appropriate irregularities that can be detected by irregularities or shadows are added to the two-dimensional code to create a three-dimensional code that can be individually recognized.
  • the method of assigning a three-dimensional code is not limited, but for example, a code can be assigned particularly efficiently in a manufacturing method such as a 3D printer (laminated modeling) or a multi-axis processing machine that can assign a three-dimensional code at the same time as modeling. It is possible.
  • FIG. 1 shows a custom bone plate (Ti alloy) to which an individual identification code was added during metal additive manufacturing.
  • FIG. 1 is a schematic view of an implant in which a cord is integrally formed. The overall size of the cord is set from the assumed width of the implant to about 1 cm to 8 mm (Fig. 6 is an example of the data matrix), and the dimensions of the ⁇ part (the dimensions of each dot (cell)) when the overall size is assumed. The size of the identification code was determined with 0.4 or 0.8 mm ⁇ as the dimension of the ⁇ part.
  • FIG. 2 shows a side view of the custom bone plate (implant) shown in FIG.
  • FIG. 3 is a diagram showing an example of the uneven surface of the code of the data matrix.
  • FIG. 4 is a diagram showing an example when the uneven surface of the data matrix of FIG. 3 is changed in reverse.
  • the present invention can be applied to any of the uneven surfaces.
  • FIG. 5 is a diagram showing an enlarged view of the three-dimensional code engraved on the custom bone plate (implant) shown in FIG.
  • FIG. 6 is a view showing a plan view and a side view of the three-dimensional code in one embodiment of the present invention.
  • FIG. 7 is a diagram showing the size of the three-dimensional code in one embodiment of the present invention.
  • two-dimensional barcode models were produced by metal lamination modeling and used in the reading experiment.
  • a two-dimensional bar code was produced by changing the shaping conditions using an electron beam laminating apparatus and a laser beam laminating apparatus. Samples were prepared by modeling under various conditions.
  • ⁇ Code reading test> A reading experiment was conducted using SR-G100 (manufactured by KEYENCE CORPORATION) as a reading reader. As a confirmation, we conducted an experiment to read the 2D barcode and the modeled object of the data matrix with the code printed first (normal 2D code). It is positioned as a demonstration that it can be read in size.
  • the concave portions and the convex portions may be colored with black or the like, and even with these, they can be identified. Coloring tends to make recognition easier.
  • the concave surface may be filled with another substance.
  • the three-dimensional model of the present invention has a three-dimensional code corresponding to the two-dimensional code
  • the following can be used as the assumed use of the custom implant to which the individual recognition code is given.
  • a code is assigned and recognized for surgery such as instruments used and for patients, etc.
  • a three-dimensional code is used for three-dimensional modeling of the present invention based on this two-dimensional code. It can be given to things. Therefore, when custom-manufacturing a custom implant that suits the individual patient's shape and bone quality (bone density, etc.) with AM, it is possible to efficiently assign a recognition code in one step of the modeling process at the time of modeling. Is.
  • This not only manages the product by designing and manufacturing a custom bone plate from the doctor's diagnosis, but also integrates it with other surgical management during surgery, and also manages post-operative follow-up and the like consistently. It is possible to do it. That is, according to the present invention, taking the bone plate as an example, it is possible not only to mass-produce a bone plate having a shape and characteristics suitable for an individual patient, but also to combine it with a healing process and other medical instruments in a medical field. It turned out to enable comprehensive management.
  • the present invention can propose individually identifiable production management by a single individual identification code from designing to realize mass customization to supply.
  • the three-dimensional model having a three-dimensional code obtained by the present invention can realize management by a single individual identification code from design to supply that realizes mass customization that has not been found so far, and it is possible to find new demand. Is.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)

Abstract

La présente invention concerne un objet moulé tridimensionnel ayant un code tridimensionnel permettant une gestion complète de la conception à l'alimentation de celui-ci. L'objet moulé tridimensionnel selon la présente invention présente un code tridimensionnel et est caractérisé en ce que le code tridimensionnel peut être lu en tant que code bidimensionnel correspondant. En outre, dans un mode de réalisation préféré de l'objet moulé tridimensionnel selon la présente invention, le code tridimensionnel est caractérisé en ce qu'il est obtenu par conversion d'un code bidimensionnel attribué pendant la conception de l'objet. En outre, dans un mode de réalisation préféré de l'objet moulé tridimensionnel selon la présente invention, les dimensions des cellules formant le code tridimensionnel sont caractérisées en ce qu'elles se trouvent dans une plage d'erreur acceptable pour la détermination des cellules pendant la lecture.
PCT/JP2020/008818 2019-03-04 2020-03-03 Objet moulé tridimensionnel WO2020179763A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019038836A JP2020144461A (ja) 2019-03-04 2019-03-04 立体造形物
JP2019-038836 2019-03-04

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