KR101663622B1 - System for forming 3 dimensional object and its method - Google Patents

Abstract

A solid body forming system is disclosed. According to an embodiment of the present invention, there is provided a three-dimensional object molding system including: a 3D printer unit for outputting 3D objects using design original data; A 3D scanner unit that scans the solid object output through the 3D printer unit to generate scanning data; And a control unit for generating design correction data by correcting the design original data after comparing the design original data with the scanning data generated through the 3D scanner unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a three-

More particularly, the present invention relates to a three-dimensional object forming system and method thereof, and more particularly, to a three-dimensional object forming system and method thereof, in which a solid object formed through a 3D printer unit is scanned into a 3D scanner unit, The present invention relates to a three-dimensional object forming system and a method thereof.

2. Description of the Related Art Generally, a printer is a device that prints characters, drawings, and the like on an object. Printer devices that are connected to a computer and print on the ground are widely used for business and home use.

In the conventional printer, two-dimensional printing is performed by jetting fine ink while moving paper or sheet material to be printed in a predetermined direction. However, in recent years, a three-dimensional printer capable of forming a three- .

3D printers, in particular, have the advantage of being able to increase cost and efficiency through the use of 3D technology, which is highly applicable to manufacturing industries with rapid changes, and can also be used to form implants for dental treatment.

In the meantime, 3D printers have evolved rapidly based on open source in the last few years. In just one to two years, 3D printers have been developed for use in the desktop and are popularized. In addition, by using Internet shopping malls, The trend is spreading.

Here, the printing method of the 3D printer can be roughly divided into FDM (Fused Deposition Modeling), DLP (Digital Light Processing), SLA (Stereolithography Apparatus) and SLS (Selective Laser Sintering).

However, when a three-dimensional object is formed using a currently available 3D printer, a considerable range of errors may occur in the actual shape and the molded shape, and thus the precision of the molded object is deteriorated.

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SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is therefore an object of the present invention to provide an image processing apparatus and a method of designing a three-dimensional object by scanning a 3D object formed by the 3D printer unit with a 3D scanner unit, Dimensional accuracy of the three-dimensional object can be improved by reducing the error of the three-dimensional object through the analysis of the error value with respect to the scanning data, and a method thereof.

According to an aspect of the present invention, there is provided a 3D printer comprising: a 3D printer unit for outputting a solid object using design original data; A 3D scanner unit that scans the solid object output through the 3D printer unit to generate scanning data; And a control unit for generating design correction data by correcting the design original data after comparing the design original data with the scanning data generated through the 3D scanner unit.

Further, the design original data may be prepared based on data obtained through an image information acquiring unit including at least one of a computed tomography (CT) and a scanner.

The control unit may be configured to model the scanning data in 3D so as to compare the scanning data generated in the 3D scanner unit with the design original data to generate 3D modeling data from the scanning data.

In addition, the three-dimensional object may be provided as an implant used in a dental treatment process.

According to another aspect of the present invention, there is provided a method of designing a 3D printer, comprising the steps of: (A) receiving 3D design data from a 3D printer unit and outputting 3D objects; (B) the 3D scanner unit scans the three-dimensional object to generate scanning data; And (C) the control unit compares the scanning data with the design original data, and then corrects the design original data to generate design correction data.

The step (A) may include the step of preparing the design original data based on data obtained through an image information acquiring unit including at least one of (A1) computed tomography (CT) and a scanner.

In the step (A1), the design source data may be prepared by rendering the data and converting the data into a 3D file.

The step (C) may include: (C1) modeling in 3D through the scanning data to generate 3D modeling data from the scanning data, and the control unit comparing the 3D modeling data with the design original data can do.

The step (C) may further include (C2) a step of the control unit comparing the 3D modeling data with the design original data to extract error data corresponding to the difference.

In addition, the three-dimensional object may be provided as an implant used in a dental treatment process.

In the embodiments of the present invention, the design original data of the solid object is corrected so that the solid object formed through the 3D printer unit is scanned into the 3D scanner unit so as to approximate the actual shape of the solid object, and the design original data of the solid object, It is possible to reduce the error of the molding of the three-dimensional object and improve the accuracy of the three-dimensional object molding.

FIG. 1 is a schematic perspective view of a 3D printer unit in a 3D object molding system according to a first embodiment of the present invention, in which original design data is input and 3D objects are output. FIG.
2 is a schematic perspective view of a 3D scanner unit in a three-dimensional object forming system according to a first embodiment of the present invention, in which three-dimensional objects are scanned for generation of scanning data of a three-dimensional object.
3 (a) and 3 (b) are views illustrating a process of generating design correction data by comparing the design original data with the scanning data in the control unit in the three-dimensional object forming system according to the first embodiment of the present invention.
4 is a side cross-sectional view showing a state in which a general implant is placed in an alveolar bone.
5 is a perspective view showing a state where a drilling guide for an implant used in an implant is coupled to a tooth.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

The terms " one side " and " other side " used in this specification may mean a specified side, or do not mean a specified side, but any side of a plurality of sides may be referred to as one side, And the other side is referred to as the other side.

Also, as used herein, the term " bond " or " connection " refers to the case where one member and another member are directly 'coupled' or directly 'connected', as well as one member is indirectly Or indirectly connected to each other.

FIG. 1 is a schematic perspective view of a 3D printer unit in a 3D object molding system according to a first embodiment of the present invention, in which original design data is input to output a 3D object. FIG. 2 is a cross- 3A and 3B are schematic perspective views in which a 3D scanner unit scans a solid object for generation of scanning data of a solid object. FIGS. 3A and 3B are views showing a control unit in the solid object forming system according to the first embodiment of the present invention 4 is a side sectional view of a general implant placed in an alveolar bone, and FIG. 5 is a sectional view of a drilling guide for an implant, which is used in an implant, according to an embodiment of the present invention. Of the present invention is attached to the teeth.

Referring to these drawings, a three-dimensional object forming system according to an embodiment of the present invention includes a 3D printer unit 100 for outputting 3D objects using design original data 800, A 3D scanner unit 200 for scanning the three-dimensional object to generate scanning data 900, scanning data 900 generated through the 3D scanner unit 200, design original data 800 after the comparison of the design original data 800, 800) to generate design correction data (850).

Referring to FIG. 1, the 3D printer unit 100 is configured to output a solid object using design original data 800 (see FIG. 3). The design original data 800 may be data modeled in 3D.

The 3D printer unit 100 is a device for outputting a three-dimensional solid object while continuously spraying and laminating a material on a lamination plate 120 in response to a signal from a computer or the like. The 3D printer unit 100 is convenient to use, It has the advantage of being able to expand into various fields from manufacturing to medical equipment companies.

The 3D printer unit 100 can be used in various fields and can output 3D objects by inputting design original data 800 of 3D objects modeled as 3D objects. Here, the 3D printer unit 100 is connected to an external device such as a computer Or the 3D printer unit 100 may be provided with a central processing unit having an arithmetic function so as to receive the design original data 800 by the 3D printer unit 100 without connecting the external apparatus, May be arranged to be executed immediately.

1 and 3, the 3D printer unit 100 forms a three-dimensional object on the basis of the design original data 800 through the material drawing unit 110 disposed inside the main body 130, .

Here, the material may be prepared from various materials, and in particular, a thermoplastic resin such as PLA (Poly Lactic Acid), PVC (Polyvinyl Chloride), PVA (Polyvinyl Alcohol) or ABS (Acrylonitrile Butadiene Styrene) may be used. However, the material is not limited thereto, and various materials applicable to the 3D printer unit 100 may be included.

Referring to FIG. 1, the material drawing unit 110 may be provided with a nozzle 111 capable of drawing a material supplied from a material supply unit (not shown).

A stacking plate 120 in which three-dimensional objects are stacked may be disposed below the nozzle 111. A material withdrawing unit 110 provided with a nozzle 111 is connected to a belt (not shown) And may be configured to form a solid body by laminating a material on the laminating plate 120 while being driven in various directions based on a three-dimensional rectangular coordinate system having an X axis, a Y axis, and a Z axis.

Here, the 3D printer unit 100 can be used in various industries such as automobiles, construction, and metal molds because it can output clocks, shoes, mobile phone cases, automobile parts, and the like in three dimensions.

Hereinafter, for the sake of convenience of explanation, the stereolithography molded through the three-dimensional object molding system according to the first embodiment of the present invention is mainly described as an implant 400 used in a medical treatment, particularly, a dental treatment process. It is to be understood that the scope of the present invention is not limited thereto, and that various types of solid object molding can be included in the scope of the present invention.

In this specification, for the sake of convenience of explanation, the drilling guide 500 for an implant will be mainly described as an implant-related medical industry, but the present invention is not limited thereto. The solid object molded through the three- And may be an implant 400 including a tooth 410 and an abutment 420.

That is, the implant 400 including the fixture 410 and the abutment 420 may be output through the 3D printer unit 100.

Referring to FIG. 4, generally, the implant 400 refers to a replacement that restores when a human tissue is lost, but refers to implantation of artificial teeth made of artificial teeth. A replacement root that can replace the lost root is planted in the alveolar bone 700 where the tooth is removed and then the artificial crown 430 is fixed to restore the function of the tooth 710.

In addition, the implant 400 improves the function of the denture and improves the aesthetic aspects of dental prosthesis restoration, as well as single-tooth restoration, as well as partial and total toothless patients. Furthermore, it helps to stabilize the dentition as well as to disperse the excessive stress applied to the surrounding supporting bone tissue.

The dental implant 400 procedure includes an operation of placing the fixture 410 on the gingival bone, i.e., the alveolar bone 700, and the operation of attaching the abutment 420 to the inserted fixture 410, And a prosthetic procedure in which the artificial crown 430 is attached to the butt 420.

Here, the abutment 420 is provided so that the artificial crown 430 can be supported. The fixture 410 may be made of titanium (Ti, Titanium) or titanium alloy, which has no rejection to the human body.

The method of implanting the implant 400 may be various, and one embodiment thereof will be briefly described as follows.

Drilling and tapping are performed on the alveolar bone 700 to form a groove conforming to the dimension of the fixture 410 and then a mount is fastened to the upper portion of the fixture 410. Then, the fixture 410 and the mount are placed in the alveolar bone 700 using the surgical handpiece, and then the mount is removed from the fixture 410 to fix the fixture 410 to the alveolar bone 700 .

The first operation is completed by fastening the cover screw to the upper portion of the fixture 410 to seal the fixture 410.

The cover screw blocks invasion of bacteria and foreign substances present in the oral cavity into the fixture 410 while waiting for the fusion of the fixture 410. The duration of osseointegration differs somewhat depending on the patient's bone quality and implantation position, but generally, 3 to 6 months are avail- able.

Next, the gums are opened through the second operation to expose the cover screw, and the degree of fusion of the fixture 410 is checked and the cover screw is removed.

After the teeth model is manufactured and the artificial crown 430 is pierced, the abutment 420 is fastened on the fixture 410 and the artificial crown 430 is fixed on the abutment 420, .

5, a drilling guide 500 for an implant, which guides the movement of the drill bit 600 for drilling when the alveolar bone 700 is drilled to place the fixture 410 in the alveolar bone 700, And can be coupled to the teeth 710 inside the patient's mouth.

Assuming that the implant drilling guide 500 is not installed, the doctor sets the drilling angle based on the personal experience and proficiency of the doctor when drilling the alveolar bone 700, and sets the drilling depth according to the set angle Thereby forming a hole in the alveolar bone 700.

If the drilling is performed in this manner, the depth and angle of the holes formed in the alveolar bone 700 may not be constant depending on the individual ability of the doctor. A drilling guide 500 for an implant can be installed, thereby ensuring a certain drilling depth and drilling angle.

Here, the drilling guide 500 for an implant may have different dimensions depending on the patient's oral condition and the state of the alveolar bone 700 and the teeth 710. In other words, the drilling guide 500 for an implant is coupled to and supported by the patient's teeth 710. Since the shape, number and size of the teeth 710 are different for each patient, The shape and size of the guide 500 should also be different.

To this end, the design original data for forming the drilling guide 500 for an implant may be prepared based on data obtained through an image information acquiring unit including at least one of CT (Computed Tomography) and a scanner.

Here, CT, a computer tomography method, is an imaging method in which an X-ray or an ultrasonic wave is projected onto a human body at various angles of the human body and reconstructed with a computer to process an image of the internal section of the human body. It becomes possible to acquire the data relating to the above-mentioned data.

Based on the CT data photographed by the CT, the two-dimensional image is rendered in three dimensions, and the design original data 800 can be prepared based on the three-dimensional rendered data.

That is, CT data suitable for the individual characteristics of the patient can be generated through the CT, and design original data 800 corresponding to the data that can be formed through the 3D printer unit 100 based on the CT data can be prepared.

On the other hand, the 3D scanner unit 200 can be used to scan the internal structure of the patient's mouth and construct the scan results as 3D model data.

Here, the tactile ring CT data may be combined with the 3D model data related to the oral internal structure of the patient obtained through the 3D scanner unit 200 to form the drilling guide 500 for an implant.

Referring to FIGS. 1 and 3, the 3D printer unit 100 can form the implant drilling guide 500 into a three-dimensional shape based on the design original data 800 provided in this manner.

However, when forming a solid object through the 3D printer unit 100, a considerable error may occur in the design original data 800 and the actual formed solid object.

That is, a difference may occur in the dimension of the design original data 800 and the dimension of the actual formed three-dimensional object. In the case of the drilling guide 500 for an implant, if a three- A situation may arise in which the drilling guide 500 for an implant can not be coupled to the oral cavity of the patient due to the difference.

Therefore, when the molding of the three-dimensional object is completed through the 3D printer unit 100, but an error occurs, the error correction should be performed by the dimension at which the error occurs.

If the operator manually measures the dimension for correcting the error, it takes a lot of time and it may not be easy to ensure accuracy. Therefore, in the case of the three-dimensional object molding system according to the first embodiment of the present invention, The 3D objects scanned through the 3D printer unit 100 are scanned through the 3D scanner unit 200 to generate the scanning data 900 (see FIG. 3).

2, the 3D scanner unit 200 includes a light irradiation unit 210 for irradiating light toward a solid object, and a light receiving unit 220 for acquiring light reflected from the solid object after being irradiated from the light irradiation unit 210 .

Here, the light irradiated from the 3D scanner unit 200 may include various kinds of lasers. That is, to irradiate the laser beam at the light irradiation unit 210 of the 3D scanner unit 200.

3, the control unit 300 corrects the design original data 800 after comparing the design original data 800 with the scanning data 900 generated through the 3D scanner unit 200.

That is, the control unit 300 compares the scanning data 900 with the design original data 800 to grasp the error and correct the error to generate the design correction data 850 (see FIG. 3).

Here, the 3D scanner unit 200 may be provided to scan a three-dimensional solid object using a mechanism for extracting coordinate values of an outline of an object and obtaining data related thereto.

Scanning data 900 is generated by scanning a solid object through the 3D scanner unit 200. The scanning data 900 generated in this manner may be data modeled in three dimensions or modeled in three dimensions It may be the data from the previous step.

Accordingly, if the scanning data 900 is data before the 3D modeling, the control unit 300 models the scanning data 900 in 3D before the 3D modeling, and outputs the 3D modeling data 900 ), Thereby comparing the design original data 800 with the 3D modeling data 900.

Referring to FIG. 3, when the drilling guide 500 for an implant output through the 3D printer unit 100 has an error with respect to the design original data 800, the error of the drilling guide 500 for an implant becomes 3D A difference is generated in the design original data 800 and the scanning data 900 by an error as a result of being reflected in the scanning data 900 when scanning through the scanner unit 200 (a1? A2 and b1? B2 Reference).

The control unit 300 corrects the difference by the error to generate the design correction data 850 and the 3D printer unit 100 reads the implant drilling guide 500 on the basis of the design correction data 850 Since the error correction is performed on the implant drilling guide 500 output through the 3D printer unit 100 based on the design correction data 850, the accurate three-dimensional object can be output.

That is, if the solid object output through the 3D printer unit 100 is a drilling guide 500 for an implant, the drilling guide 500 for an implant is suitable for the oral condition of the patient and the condition of the alveolar bone 700 and the tooth 710 Accuracy can be guaranteed.

In the solid object forming system according to the first embodiment of the present invention, a solid object formed through the 3D printer unit 100 is scanned into the 3D scanner unit 200 so as to approximate the actual shape of the solid object. 800) are corrected, thereby reducing errors in the formation of the three-dimensional object, thereby improving the accuracy of forming the three-dimensional object.

Referring to FIG. 1, the 3D printer unit 100 outputs a 3D object using the design original data 800 generated based on the CT data obtained through the CTs of the individual patients.

However, since the stereoscopic objects output through the 3D printer unit 100 may generate errors with the design original data 800, it is necessary to correct them.

2, the 3D scanner unit 200 scans a solid object output through the 3D printer unit 100 to generate scanning data 900. [

Referring to FIG. 3, the control unit 300 compares the design original data 800 with the scanning data 900. Since the design original data 800 may be data modeled in 3D, the control unit 300 may model the scanning data 900 in 3D for ease of comparison between the design original data 800 and the scanning data 900 And generates 3D modeling data 900 from the scanning data 900.

On the other hand, if the stereoscopic object output through the 3D printer unit 100 has an error from the design original data 800, the design original data 800 and the 3D modeling data 900 also have an error, This error is corrected to generate the design correction data 850, and the 3D printer unit 100 finally outputs the error-free solid object using the design correction data 850. [

In the solid object forming method according to the second embodiment of the present invention, the solid object formed through the 3D printer unit 100 is scanned into the 3D scanner unit 200 so as to approximate the actual shape of the solid object. 800) are corrected, thereby reducing errors in the formation of the three-dimensional object, thereby improving the accuracy of forming the three-dimensional object.

However, contents common to those described in the three-dimensional object molding system according to the first embodiment of the present invention are replaced with the above description.

The three-dimensional object to be molded through the three-dimensional object molding method according to the second embodiment of the present invention will be described mainly with reference to the implant 400 used in the dental treatment process as in the first embodiment.

The inside of the patient's mouth can be photographed by CT. By rendering the CT data obtained through the CT and converting it into a 3D file, the design original data 800 for the implanting drilling guide 500 can be prepared have.

The 3D printer unit 100 receives the design original data 800 for the drilling guide 500 for the implant, and outputs a 3D object related to the drilling guide 500 for the implant.

However, since the drilling guide 500 for an implant output in this manner may generate an error in comparison with the design original data 800, the error can be corrected through the 3D scanner unit 200.

That is, the 3D scanner unit 200 scans the drilling guide 500 for the implant to generate the scanning data 900, wherein the scanning data 900 may be data before the 3D modeling.

The control unit 300 models the scanning data 900 in 3D and generates 3D modeling data 900 thereby to compare the design original data 800 with the 3D modeling data 900. [

When the 3D object output through the 3D printer unit 100 has an error with respect to the design original data 800, an error occurs in the design original data 800 and the scanning data 900. The control unit 300 The 3D modeling data 900 and the design original data 800 are compared to extract error data corresponding to the difference.

The control unit 300 compares the 3D modeling data 900 modeled in 3D from the scanning data 900 with the design original data 800 and then corrects the design original data 800 to generate the design correction data 850 And the 3D printer unit 100 again outputs the implant drilling guide 500 based on the design correction data 850 thus generated.

Accordingly, there is an effect that the drilling guide 500 for an implant can be formed, which improves the accuracy of fitting of the oral cavity of the patient and the condition of the alveolar bone 700 and the tooth 710.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

100: 3D printer unit 110: Material drawing unit
111: nozzle 120: lamination plate
200: 3D scanner unit 210: light irradiation unit
220: light receiving unit 300: control unit
400: Implant 410: Fixture
420: abutment 430: artificial crown
500: Drilling guide for implant 600: Drill bit
700: alveolar bone 710: tooth
800: design original data 850: design correction data
900: Scanning data 900: 3D modeling data

Claims (10)

A 3D printer unit for outputting a solid object using design original data;
A 3D scanner unit that scans the solid object output through the 3D printer unit to generate scanning data; And
And a control unit for comparing the scanned data generated by the 3D scanner unit with the design original data and correcting the design original data based on error data corresponding to the difference to generate design correction data,
Wherein the design original data is provided based on data obtained through an image information acquiring unit including at least one of a computed tomography (CT) and a scanner,
The control unit includes:
Modeling the scanning data in 3D so as to compare the scanning data generated in the 3D scanner unit with the design original data to generate 3D modeling data from the scanning data,
Wherein the 3D printer unit receives the design correction data from the control unit and outputs the solid object again based on the design correction data,
The three-
And a drilling guide for an implant used in a dental treatment process. delete delete delete (A) a step of the 3D printer unit receiving design original data and outputting a solid object;
(B) the 3D scanner unit scans the three-dimensional object to generate scanning data;
(C) generating a design correction data by correcting the design original data after the control unit compares the design original data with the scanning data; And
(D) the 3D printer unit again outputting the solid object based on the design correction data,
The step (C)
(C1) modeling in 3D through the scanning data to generate 3D modeling data from the scanning data, and the control unit comparing the 3D modeling data and the design original data; And
(C2) The control unit compares the 3D modeling data with the design original data, extracts error data corresponding to the difference, and corrects the design original data based on the error data to generate the design correction data ≪ / RTI >
Wherein the three-dimensional object is provided as a drilling guide for an implant used in a dental treatment process. 6. The method of claim 5,
The step (A)
(A1) the step of providing the design original data based on data obtained through an image information acquiring unit including at least one of CT (Computed Tomography) and a scanner. The method according to claim 6,
The step (A1)
And rendering the design data by rendering the data and converting the data into a 3D file. delete delete delete

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