KR100994935B1 - Fabrication method of large scale 3 dimensional structure by layer slicing - Google Patents

Abstract

The present invention provides a first step of acquiring three-dimensional shape data for a three-dimensional object, a second step of converting the acquired shape data into a size to be produced, and a three-dimensional object data of the converted size. A third step of slicing in the horizontal direction with a thickness size that can be formed using the second step; a fourth step of dividing the sliced data into a size that can be formed using a rapid forming apparatus; and a second step of adding a combined shape to the divided data. A slicing member in which a slicing member is completed by stacking the completed slicing member according to the fifth step, a sixth step of manufacturing the split parts using the rapid prototyping device according to each divided data, and the manufactured split parts according to the combined shape. The seventh step of sequentially stacking on to produce a large three-dimensional sculpture. According to the present invention, after slicing data of a large sculpture, the slicing data can be divided into a size that can be manufactured by a variable-layer rapid molding apparatus, and then combined and stacked, thereby making a large three-dimensional sculpture. In addition, since a variable lamination rapid molding apparatus for producing large-scale sculptures is used, it is possible to take advantage of the rapid processing and excellent processing precision of the material sheet material, which is an advantage of the apparatus, thereby enabling the production of large three-dimensional sculptures with high precision.

Description

Fabrication method of large scale 3 dimensional structure by layer slicing}

The present invention relates to a method for manufacturing a large three-dimensional sculpture, and more particularly, by slicing the data of a large sculpture, the slicing data are divided into a size that can be produced by a variable-layer rapid molding apparatus, and then combined and laminated. The present invention relates to a three-dimensional sculpture. That is, the present invention is utilized for the production of large prototypes required in the industry, such as automobiles, ships, industrial large machinery and components, by separately manufacturing a plurality of slicing members that are sliced large pieces and then combining and stacking them. The present invention relates to a method of making large three-dimensional sculptures that can be used culturally, such as symbols for corporations and individuals, and are used in the production of large character dolls, animals, insects, and plants in department stores, amusement parks, and science museums.

Rapid Prototyping technology is a general term for technology for rapidly manufacturing parts and assemblies using 3D CAD data. Rapid molding technology has been widely applied to the visual exhibition field. Rapid molding technology enables the production of complex three-dimensional shapes that cannot be manufactured by three- or five-axis cutting, so it can be applied to various fields such as the construction of prototypes, design and function, building models, and character goods. It is possible. In addition, the rapid prototyping technology has been steadily increasing as it can achieve the effects of shortening the development time, minimizing the continuous process change, improving the communication efficiency during product development, and reducing the error rate.

Conventional rapid molding methods are largely irradiated with a laser beam on a photocurable material to be cured into a three-dimensional shape, and a granular or layered solid material is bonded to a desired shape to produce it. Can be divided into

In general, rapid prototyping refers to a process of directly forming a prototype or mold of a three-dimensional shape from three-dimensional CAD data using various non-metallic and metal materials such as paper, wax, ABS, and plastic, and recently, As the material is developed into metal powder and metal wire (Wire), the moldings are molded by various processes.

Among the rapid forming methods, prior arts related to the layer bonding technology include laminated object manufacturing (LOM) technology developed by Helisys, USA, and ShapeMaker II technology developed by Utah University, USA.

Laminate material stacking process technology is to produce a molding by repeating the process of pressing and bonding a thin sheet of paper (about 0.106 mm) form with a high-temperature roller and cutting with a laser. However, this technique not only takes a lot of time to produce the sculpture because of cutting the thin sheet by laser but also the manufacturing cost is very high. In addition, after the production of the sculpture has a disadvantage that takes a lot of time because it has to remove the support member used for the shape implementation.

ShapeMaker II technology cuts thick materials over 25.4mm with a hot wire cutter with two plotter heads, and then manually stacks and bonds them to produce three-dimensional sculptures. However, this technique has a disadvantage in that the hot wire cutter does not rotate quickly because the hot wire cutter is composed of two plotter heads. In addition, since the length of the heating wire is changed according to the rotation angle, it is difficult to constantly maintain the heating value of the heating wire, and there is a disadvantage in that the dimensional accuracy due to the heating value deviation of the heating wire is inferior.

In view of these shortcomings, KAIST developed the "Intermittent material supply variable lamination rapid prototyping method and apparatus" disclosed in Korean Patent Publication No. 2004-0043583. “Variable Rapid Rapid Forming Apparatus for Manufacturing Large Sculpture” disclosed in -0046575.

Patent Publication No. 2004-0043583 freely cuts, bonds, and laminates a plate member used as a material to a width, inclination, and length required by CAD data, thereby dramatically improving molding time and precision, and significantly reducing material loss. There is an advantage.

In addition, Patent Publication No. 2006-0046575 is a parallelogram-shaped link structure of the hot wire cutting unit constituting the rapid molding apparatus is possible to change the length of the link can be precisely cut a variety of plates from small plate to large plate. In other words, by cutting and stacking a variety of plates from small plates to large plates within the link length of the heat distal end, it is possible to manufacture large three-dimensional sculptures larger than those of other rapid molding machines. However, in order to produce a larger three-dimensional sculpture, there is bound to be a space limitation of the rapid molding apparatus.

Therefore, the present invention has been made to solve the problems of the prior art as described above, and after slicing the data of large sculptures, the slicing data are divided into the size that can be manufactured in the variable-layer rapid molding apparatus, and then combined and stacked. The purpose is to provide a method for producing a large three-dimensional sculpture.

This invention is a technique for producing a large three-dimensional sculpture by introducing a new concept of the sculpture production method. That is, the present invention slices the entire modeling data of a large three-dimensional sculpture to be manufactured, divides the sliced data into a plurality of pieces, and increases the number of divided modeling data corresponding to one layer of slicing surface, thereby increasing the area of the slicing surface. It is a technology that introduces the concept that theoretically large sculptures can be produced by removing limitations.

In addition, the present invention is configured to complete the slicing member by joining each of the divided parts produced by the rapid molding apparatus according to the plurality of divided molding data to each other. At this time, as the number of split parts increases, the coupling between split parts should be more robust. In addition, as the number of divided parts increases, the divided parts may fall off during the assembly process. In addition, when there is a tolerance between the mating surfaces, the stacking of the tolerances may affect the shape of the slicing member, so the coupling should be firm.

As mentioned above, "in theory, it is possible to produce infinitely large sculptures", but in the production of actual large sculptures, tolerances occur between the divided parts when fabricating and combining a plurality of divided parts, and when forming and stacking slicing members, Because the durability of the sculpture is important for the sculpture to be maintained, there will be limitations to this.

Accordingly, the present invention also seeks to develop a joining method, a joining mechanism and a mechanism applicable to the joining of a plurality of divided parts and the stacking of the slicing members in order to increase the durability of a large molding.

The present invention provides a first step of acquiring three-dimensional shape data for a three-dimensional object, a second step of converting the acquired shape data into a size to be produced, and a three-dimensional object data of the converted size. The third step of slicing in the horizontal direction with a thickness size that can be formed using the fourth step, the fourth step of converting the sliced data into a size that can be formed using the rapid prototyping device, and the divided parts to be produced in the divided data A fifth step of adding a coupling shape having a structure of concave and convex so as to be engaged with each other, and having a planar shape using a rapid prototyping device according to each divided data, and having a concave, convex or concave on one side A sixth step of fabricating the parts, and fitting the manufactured divided parts into a joining shape with each other to complete the slicing member And a seventh step of sequentially stacking the completed slicing member on the laminated slicing member to produce a large three-dimensional sculpture.

The joining shape of the present invention can generate data larger than the joining shape of the recesses to form data for each divided part, and apply an adhesive material between the recesses and the recesses to join them.

The coupling shape of the present invention generates data larger than the coupling shape of the concave portion, thereby forming the divided parts, respectively, and the concave portion and the convex portion can be elastically coupled to each other.

This invention can have a plurality of coupling shapes.

The coupling shape of the present invention may have an inclined surface coupling structure by inclining the side of the recess and the convex portion.

The engagement shape of this invention may have a pattern that engages each other on the side of the recessed portion and the convex portion.

According to the present invention, the slicing member can be divided and laminated to be divided with the dividing line of the adjacent upper and lower slicing members.

According to the present invention, after slicing data of a large sculpture, the slicing data can be divided into a size that can be manufactured by a variable-layer rapid molding apparatus, and then combined and stacked, thereby making a large three-dimensional sculpture. That is, the present invention is utilized for the production of large prototypes required in the industry, such as automobiles, ships, industrial large machinery and components, by separately manufacturing a plurality of slicing members that are sliced large pieces and then combining and stacking them. It is also used for the production of large character dolls, animals, insects, plants, etc. in department stores, amusement parks, science museums, and so on.

In addition, the present invention uses a variable stacking rapid molding apparatus for manufacturing large-scale sculptures, and therefore, it is possible to take advantage of the rapid processing and excellent processing precision of the material sheet material, which is an advantage of the apparatus, thereby enabling the production of large three-dimensional sculptures with high precision. Do.

1 is a perspective view showing the configuration of the variable laminated rapid molding apparatus for manufacturing a large sized object disclosed in Patent Publication No. 2006-0046575 used in the embodiment of the present invention. As shown in FIG. 1, the rapid prototyping apparatus used in this embodiment includes a plate member supply means 110 for loading and supplying a large amount of plate member 10, and the plate member 10 supplied thereto. Conveyor 120 for reciprocating in the longitudinal direction, the conveying means 130 for reciprocating in the width direction of the plate-shaped member 10, and the conveying means for pivoting around the width direction of the plate-shaped member 10 as its central axis A pivoting means 140 coupled to the 130, a translation means 150 linked to the pivoting means 140 so as to translate in the width direction of the plate member 10, and one side of the translation means 150. And cutting means (including hot wire 160) for cutting the plate member 10, and system control means for controlling the operation of the respective means according to the data of the sculpture to produce respective unit laminated members constituting the sculpture ( 170), and unit stacked members are sequentially stacked to form a sculpture It consists of lamination means (not shown) to lock.

The rapid forming apparatus configured as described above is configured as a parallelogram link structure through a pair of yoke 141, a pivot bar 151, and a horizontal bar 153 supported by a hot wire cutting unit, that is, the conveying means 130. It features the ability to precisely cut plates of various sizes.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a method for manufacturing a large three-dimensional sculpture by layered division according to the present invention using a rapid molding apparatus configured as described above will be described in detail.

2 is a flowchart illustrating a manufacturing method of a large three-dimensional sculpture according to an embodiment of the present invention, Figure 3 is an example of a three-dimensional shape for explaining the manufacturing process of the large three-dimensional sculpture shown in Figure 2 and slicing data thereof After that, a conceptual diagram showing a process of combining the divided divided parts with each other, Figure 4 is a conceptual diagram showing a process of manufacturing the size of the desired shape by increasing the number of divided data when the size of the three-dimensional sculpture is increased.

As shown in Figs. 2 to 4, the manufacturing method of the large three-dimensional sculpture according to this embodiment, first obtains the three-dimensional shape data 310 for the large three-dimensional sculpture to be manufactured in a conventional manner ( S210). Then, the 3D shape data 310 is finally converted to the size required for manufacturing (S220), and then the size converted data 320 is sliced (S230). At this time, slicing is performed in the horizontal direction so that a large three-dimensional sculpture has a certain thickness. That is, slicing is made in accordance with the thickness of the plate-shaped member 10 used in the rapid molding apparatus shown in FIG.

Thereafter, the sliced data 330 is divided into sizes that can be manufactured at the hot wire cutting unit of the rapid prototyping apparatus shown in FIG. 1 (S240). In order to combine the plurality of divided pieces of data 340 with each other, a combined shape is added to the divided portions (S250). Thereafter, the divided parts are formed using the rapid prototyping apparatus of FIG. 1 according to the divided data 340 (S260). Finally, the split parts are joined to each other to complete the slicing surface of the slicing member of one layer (S270). Thus, a plurality of divided parts are joined to each other to form a slicing surface, and the three-dimensional sculpture is completed by sequentially stacking the surfaces (S280).

In order to increase the degree of completeness of the large three-dimensional sculpture, that is, the precision, the edge of the slicing member should be connected smoothly. For this purpose, it is preferable to combine the divided parts with each other. That is, it is preferable to combine the split parts together to complete a slicing member of one layer, and to laminate the completed slicing member to the upper surface of another stacked slicing member, and to apply the adhesive at the time of lamination to laminate the bonding. At this time, it is more preferable to minimize the errors that may occur during the stacking process of the slicing member by penetrating a long rod or pin at an appropriate position of the slicing surface, and to improve the durability of the large three-dimensional sculpture manufactured.

FIG. 5 is a conceptual view of applying adhesive to recesses and convex portions, which are coupling portions of the divided parts, which constitute the slicing member of the three-dimensional sculpture, and FIG. And, Figure 7 (a) is a conceptual diagram to increase the number of the coupling portion of the divided part to widen the coupling surface, (b) is a conceptual diagram inclined to the side of the coupling portion, (c) is a pattern on the coupling portion side 8 is a conceptual diagram in which a slicing member is divided and laminated to be divided with a dividing line of adjacent upper and lower slicing members.

As shown in Fig. 5, this embodiment has a joining shape of the recessed portion and the convex portion, but generates data larger than the joining shape of the recessed portion to form the divided parts, respectively, and bonds between the recessed portion and the convex portion. The material may be applied to bond the divided parts to each other.

As shown in Fig. 6, this embodiment has a joining shape of the recessed portion and the convex portion, generates data larger than the joining shape of the concave portion to form the divided parts, respectively, and the recessed portion and the convex portion are elastic to each other. It may have a structure to be bonded.

As shown in FIG. 7, this embodiment may have a coupling shape of recesses and convex portions, but may have a plurality of coupling shapes for a firm coupling between divided shapes. In addition, while having a coupling shape of the recess and the convex portion, it is possible to have an inclined surface coupling structure by placing a slope (θ) on the side surface of the recess and the convex portion so as to facilitate fastening and coupling between the divided shape. In addition, it may have a coupling shape of the recessed portion and the convex portion, but may have a structure that widens the surface area between the engaging surfaces by forming a pattern, protrusions or grooves engaged with each other in the recessed portion and the convex portion for a firm coupling between the divided shape.

As shown in FIG. 8, this embodiment may have a structure in which the slicing members are divided and stacked alternately with the dividing lines of the adjacent upper and lower slicing members, for a firm coupling between the upper and lower slicing members.

In the above description, the technical details of the method for manufacturing a large three-dimensional sculpture by dividing the laminated surface of the present invention have been described together with the accompanying drawings. However, this is illustrative of the best embodiments of the present invention and is not intended to limit the present invention. .

In addition, it is obvious that any person skilled in the art can make various modifications and imitations within the scope of the appended claims without departing from the scope of the technical idea of the present invention.

1 is a perspective view showing the configuration of the variable stacking rapid molding apparatus for manufacturing a large sculpture used in the embodiment of the present invention,

2 is a flow chart showing a method of manufacturing a large three-dimensional sculpture according to an embodiment of the present invention,

FIG. 3 is a conceptual diagram illustrating an example of a three-dimensional shape for explaining a manufacturing process of the large three-dimensional sculpture shown in FIG. 2, and a process of combining the divided divided parts after slicing data,

4 is a conceptual diagram illustrating a process of manufacturing a size of a desired shape by increasing the number of divided data when the size of a 3D sculpture is increased.

5 is a conceptual view of applying an adhesive to recesses and convex portions that are joining portions of the divided parts constituting the slicing member of the three-dimensional sculpture,

6 is a conceptual diagram for coupling the coupling portion of the divided part by the elastic coupling of the recessed portion and the iron portion,

Figure 7 (a) is a conceptual diagram to increase the number of the coupling part of the divided part to widen the coupling surface, (b) is a conceptual diagram inclined to the side of the coupling portion, (c) adds a pattern to the side of the coupling portion Is a conceptual diagram,

FIG. 8 is a conceptual diagram in which the slicing members are divided and stacked with the dividing lines of adjacent upper and lower slicing members alternately.

  ♠ Explanation of symbols on the main parts of the drawing ♠

310: three-dimensional shape data 320: converted data

330 slicing data 340: split data

Claims (7)

A first step of acquiring three-dimensional shape data of the three-dimensional sculpture, A second step of converting the acquired shape data into a size to be produced, A third step of slicing the converted three-dimensional sculpture data in a horizontal direction with a thickness size that can be formed by using a rapid molding apparatus; A fourth step of dividing the sliced data into sizes that can be formed using the rapid prototyping apparatus; A fifth step of adding a joining shape having a structure of a recessed portion and a convex portion so that the divided parts to be manufactured can be joined to each other by being joined to the divided data; A sixth step of manufacturing the divided parts having a flat shape using the rapid prototyping device and having the recessed portion, the convex portion, or the concave-convex portion on one side according to the divided data divided; And a seventh step of fabricating a large three-dimensional sculpture by inserting the divided parts into a coupling shape to complete the slicing member and sequentially laminating the completed slicing member on the stacked slicing member. Method of manufacturing large three-dimensional sculptures by face division. The method according to claim 1, The coupling shape is a laminated surface, characterized in that for forming the data to make the coupling shape of the recess larger than the coupling shape of the convex portion to form the divided parts, respectively by applying an adhesive material between the concave portion and the convex portion. Method of manufacturing large three-dimensional sculptures through division. The method according to claim 1, The coupling shape may be larger than the coupling shape of the convex part to generate data larger than that of the concave part to form the divided parts, and the concave part and the convex part may be elastically coupled to each other. 3D sculpture production method. The method according to claim 1, Method for producing a large three-dimensional sculpture through the laminated surface division, characterized in that having a plurality of the coupling shape. The method according to claim 1, The coupling shape is a method of manufacturing a large three-dimensional sculptures through the laminated surface division, characterized in that the inclined surface coupling structure to the inclined side of the recess and the convex portion. The method according to claim 1, The coupling shape is a method of manufacturing a large three-dimensional sculptures through the laminated surface division, characterized in that having a pattern that is engaged with each other on the side of the recess and the convex portion. The method according to claim 1, And dividing the slicing member by dividing the slicing member so as to deviate from the dividing line of adjacent upper and lower slicing members.

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