KR102320887B1 - System and method for providing 3d shape information with syntax checkup of geometric dimensioning and tolerancing and computer program for the same - Google Patents

Abstract

A three-dimensional shape information providing system comprises: a first input unit configured to receive three-dimensional modeling data including one or more features; a second input unit configured to receive production information defining a geometric tolerance associated with the one or more features; a feature analysis unit configured to determine a geometric tolerance rule associated with the one or more features by analyzing the three-dimensional modeling data; a grammar checker unit configured to generate check information for the production information by detecting an error in the geometric tolerance included in the production information on the basis of the geometric tolerance rule; and an output unit configured to output the three-dimensional modeling data together with at least one among the production information and the check information. According to the three-dimensional shape information providing system, by writing production information directly within 3D modeling data, operator's work time and data capacity are reduced. Also, through the geometric dimensioning and tolerancing (GD&T) inspection function, it is possible to prevent an error in which 3D shape information and production information of a 2D drawing do not match.

Description

SYSTEM AND METHOD FOR PROVIDING 3D SHAPE INFORMATION WITH SYNTAX CHECKUP OF GEOMETRIC DIMENSIONING AND TOLERANCING AND COMPUTER PROGRAM FOR THE SAME

Embodiments relate to a system and method for providing three-dimensional shape information and a computer program therefor. More specifically, the embodiments facilitate the work by writing the fabrication information directly in the three-dimensional (3D) modeling data, and prevent errors in the fabrication information through the Geometric Dimensioning and Tolerancing (GD&T) inspection function. it's about technology.

With the rapid development of IT technology, many changes are occurring in modeling tools used for designing buildings, automobiles, and the like. In the past, a two-dimensional (2D) design tool, which is represented by CAD and draws lines as much as the corresponding dimension by entering a dimension with a command, has been mainly used. 3D modeling tools such as 3ds Max for rendering, Sketch Up, and CATIA are being used in parallel with 2D design tools.

When designing a three-dimensional shape with a 3D modeling tool, product shape information can be internalized in the form of a history of design data. ; PMI) is not included in the 3D modeling data. For this reason, in the prior art, 2D drawings are created in a 2D drawing corresponding to 3D modeling on a 2D screen separate from the screen for 3D modeling, and production information is manually written in the 2D drawing while moving the 3D screen and the 2D screen. is being done For example, Korean Patent Application Laid-Open No. 10-2018-0076251 discloses a drawing data management system for separately preparing drawings for construction by copying original drawings.

However, in the case of writing production information on a separate screen as in the prior art, including Patent Publication No. 10-2018-0076251, the operator has to manually enter the production information while going back and forth between the 3D screen and the 2D screen, resulting in excessive work time. 3D shape information and 2D drawing information are more likely to occur inconsistently, product and production information are listed in separate views, increasing data capacity, and multiple views There is a problem in that the readability of the drawing is deteriorated because only information described in one view can be checked at a time while going back and forth.

Laid-Open Patent Publication No. 10-2018-0076251

According to one aspect of the present invention, manufacturing information such as dimensions, tolerances, specification information, and parts scheme required for product production is directly described in 3D modeling data generated by any three-dimensional (3D) modeling tool, and the manufacturing information is A system and method for providing 3D shape information that can reduce the possibility of errors in 3D shape information and 2D drawing information mismatch and reduce the work time of workers through geometric tolerance (幾何公差,　Geometric Dimensioning and Tolerancing; GD&T) grammar check and a computer program for this purpose.

A system for providing three-dimensional shape information according to an aspect of the present invention includes: a first input unit configured to receive three-dimensional modeling data including one or more features; a second input unit configured to receive fabrication information defining a geometric tolerance associated with the one or more features; a feature analysis unit configured to determine a geometric tolerance rule associated with the one or more features by analyzing the three-dimensional modeling data; a grammar checker configured to generate check information for the fabrication information by detecting an error in the geometric tolerance included in the fabrication information based on the geometric tolerance rule; and an output unit configured to output the three-dimensional modeling data together with at least one of the manufacturing information and the inspection information.

In an embodiment, each of the one or more features includes information on a size of a structure or information defining a surface included in the 3D modeling data, and the geometric tolerance rule includes a datum type, tolerance range, and symbol associated with the feature. , regulatory conditions, dimensional visibility, and information about one or more of dimensional regulation.

In an embodiment, the grammar checker may include: a correlation between a symbol of a geometric tolerance included in the production information and the feature, a correlation between a regulation condition of a geometric tolerance included in the production information and the feature, and the production information and generating the inspection information by examining at least one of a use rule of characters included in the , and whether or not characters are omitted in the production information.

In an embodiment, the output unit is further configured to output the projection view of the three-dimensional modeling data based on one or more viewpoints and the production information as one two-dimensional information.

In an embodiment, the output unit is further configured to simultaneously output a plurality of the projections having different viewpoints and the manufacturing information corresponding to each of the plurality of projections.

A method for providing three-dimensional shape information according to an aspect of the present invention includes: receiving, by a three-dimensional shape information providing system, three-dimensional modeling data including one or more features; receiving, by the three-dimensional shape information providing system, manufacturing information defining a geometric tolerance associated with the one or more features; determining, by the three-dimensional shape information providing system, a geometric tolerance rule associated with the one or more features by analyzing the three-dimensional modeling data; generating, by the three-dimensional shape information providing system, inspection information for the manufacturing information by detecting an error in the geometric tolerance included in the manufacturing information based on the geometric tolerance rule; and outputting, by the three-dimensional shape information providing system, the three-dimensional modeling data together with at least one of the manufacturing information and the inspection information.

In an embodiment, the generating of the inspection information includes, by the three-dimensional shape information providing system, a correlation between a symbol of a geometric tolerance included in the manufacturing information and the feature, and a geometric tolerance included in the manufacturing information. and examining at least one of a correlation between a regulatory condition and the characteristic, a rule for using characters included in the production information, and whether or not characters are missing in the production information.

In one embodiment, the step of outputting, by the three-dimensional shape information providing system, the projection of the three-dimensional modeling data based on one or more viewpoints and outputting the production information as one two-dimensional information include

In one embodiment, the step of outputting the two-dimensional drawing, the three-dimensional shape information providing system, simultaneously outputting the manufacturing information corresponding to each of a plurality of the projections and a plurality of the projections different from each other includes steps.

In one aspect of the present invention, the computer program is combined with hardware to execute the three-dimensional shape information providing method according to the above-described embodiments, and may be stored in a computer-readable recording medium.

According to the system and method for providing three-dimensional shape information according to an aspect of the present invention, dimensions, tolerances, specification information, parts scheme, etc. necessary for product production directly to 3D modeling data generated by any three-dimensional (3D) modeling tool Since the production information can be described, the quality of the drawing is improved, and the operator does not need to design a two-dimensional (2D) drawing separately or switch between multiple views, thereby reducing the working time. have.

In addition, according to the system and method for providing 3D shape information according to an aspect of the present invention, 3D shape information and 2D drawing information are inconsistent through geometric tolerance (Geometric Dimensioning and Tolerancing; GD&T) grammar check for manufacturing information It is possible to prevent the occurrence of errors, and compared to the prior art, data of 3D shape information and production information are lighter, and there is an advantage that costs can be reduced because a separate dedicated equipment is not required.

1 is a block diagram of a system for providing three-dimensional shape information according to an embodiment.
2 is a flowchart illustrating each step of a method for providing three-dimensional shape information according to an exemplary embodiment.
3 is a conceptual diagram illustrating an example of a feature included in 3D modeling data.
4 to 15 are images for explaining a geometrical tolerance (Geometric Dimensioning and Tolerancing; GD&T) grammar check by the system for providing three-dimensional shape information according to an embodiment.
16 is an image illustrating an exemplary output screen by the system for providing three-dimensional shape information according to an embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 is a block diagram of a system for providing three-dimensional shape information according to an embodiment.

Referring to FIG. 1 , the three-dimensional shape information providing system 3 according to the present embodiment includes a first input unit 31 , a second input unit 32 , a feature analysis unit 33 , a grammar check unit 34 , and an output unit. (35).

The first input unit 31 is a part for receiving 3D modeling data, and the second input unit 32 includes manufacturing information (Product) such as dimensions, tolerances, specification information, and parts schemes required for product production related to 3D modeling data. This is the part for inputting Manufacturing Information (PMI). In particular, the fabrication information may include a geometric tolerance (Geometric Dimensioning and Tolerancing; GD&T) associated with one or more features of the 3D modeling data. Also, the output unit 35 is a part for outputting 3D modeling data together with manufacturing information.

For the above operation, the first input unit 31 and the second input unit 32 may operate in communication with the user device 2 of a user who writes or uploads 3D modeling data or manufacturing information. Alternatively, the first input unit 31 and the second input unit 32 may receive at least a portion of the 3D modeling data and/or production information thereof from an external server 1 such as a cloud storage used by the user. have. In addition, the output unit 35 may be configured to be able to communicate with the external server 1 and/or the user device 2 .

The devices described herein may be wholly hardware, or may have aspects that are partly hardware and partly software. For example, the three-dimensional shape information providing system 3 and each system, device, server and each module or unit included therein communicating therewith transmit data in a specific format and content in an electronic communication method. A device for receiving and software related thereto may be collectively referred to. As used herein, terms such as “unit”, “module”, “server”, “system”, “platform”, “device” or “terminal” are intended to refer to a combination of hardware and software driven by the hardware. do. For example, the hardware herein may be a data processing device including a CPU or other processor. In addition, software driven by hardware may refer to a running process, an object, an executable file, a thread of execution, a program, and the like.

In addition, in the present specification, each part constituting the three-dimensional shape information providing system 3 is not necessarily intended to refer to a physically distinct separate component. That is, each part 31-35 of the 3D shape information providing system 3 in FIG. 1 is shown as a separate block that is distinguished from each other, but this is the operation performed by the 3D shape information providing system 3 . functionally separated by According to an embodiment, some or all of the above-described units may be integrated in the same single device, or one or more units may be implemented as separate devices physically separated from other units. For example, each part of the three-dimensional shape information providing system 3 may be components communicatively connected to each other in a distributed computing environment.

The user device 2 refers to a device used by a user who performs a 3D design using the 3D shape information providing system 3 . In the drawings, the user device 2 is shown in the form of a notebook computer, but this is only for illustration, and the user device 2 is a mobile communication terminal such as a smartphone, a personal computer, or a personal computer (PDA). It may be implemented in the form of any computing device, such as a digital assistant, a tablet, a set-top box for Internet Protocol Television (IPTV), and the like.

In this specification, the three-dimensional shape information providing system 3 is illustrated in the form of a server accessible from the user device 2 . It will be readily understood by those skilled in the art that the number of user devices 2 shown in the drawings is merely exemplary, and does not limit the actual number of devices operating in relation to the three-dimensional shape information providing system 3 . . On the other hand, in another embodiment, the three-dimensional shape information providing system 3 may be implemented in the form of a software application running on the user device rather than the server, in this case, the user device itself in which the application is executed is the 3D of the present specification. It may correspond to the shape information providing system 3 , and the user device 2 of FIG. 1 may be omitted.

The feature analysis unit 33 analyzes one or more features included in the 3D modeling data, and functions to determine a geometric tolerance rule associated with each feature. For the above-described operation by the feature analysis unit 33, the three-dimensional shape information providing system 3 may further include a database (DB) 30 in which geometric tolerance rule information related to the three-dimensional modeling data is stored. have. In addition, the feature included in the 3D modeling data is information defining the shape of at least some of the structures shown through the 3D modeling data, and includes information on the size of the structure or information defining the surface shape or structure of the structure. can do.

The grammar checking unit 34 detects an error in the geometric tolerance included in the production information of the 3D modeling data based on each feature of the 3D modeling data analyzed by the feature analysis unit 33 and a geometric tolerance rule therefor. function to Each feature of the 3D modeling data means information about the size of a structure or information defining a surface, where the geometric tolerance rule is a datum type, tolerance zone, symbol, regulatory condition, dimension display, and/or associated with each feature. It may include information about dimensional regulations, etc.

Based on the geometric tolerance rules, the grammar checker 34 determines the correlation between the symbols and features of the geometric tolerance included in the production information, the correlation between the regulatory conditions and the features of the geometric tolerance included in the production information, and the features included in the production information. It is possible to perform an operation for detecting a geometric tolerance that violates rules defined in the rules for using characters, whether characters are omitted in the production information, and other rules for geometric tolerances. For the above operation, in an embodiment, the grammar checker 34 includes a symbol error detector 341 , a rule error detector 342 , and/or an omission detector 343 . In an embodiment, the error detection result may be generated as check information.

The output unit 35 functions to output 3D modeling data together with manufacturing information and/or inspection information. For example, the output unit 35 processes the projection of the three-dimensional modeling data based on one or more viewpoints into two-dimensional information, and includes manufacturing information and/or inspection information on the two-dimensional information to view the same view. An output screen including both modeling data and geometric tolerances in (view) can be provided. In addition, in an embodiment, the output unit 35 may provide a full view or multi-view function that simultaneously provides a plurality of projections having different viewpoints and manufacturing information corresponding to each projection.

2 is a flowchart illustrating each step of a method for providing three-dimensional shape information according to an exemplary embodiment. The 3D shape information providing method according to the embodiments may be performed by the 3D shape information providing system described above with reference to FIG. 1 . Hereinafter, a method for providing three-dimensional shape information according to the present embodiment will be described with reference to FIGS. 1 and 2 for convenience of description.

First, in order to realize the geometric tolerance grammar check function by the three-dimensional shape information providing system 3, the geometric tolerance rule defining the grammar of the geometric tolerance among the production information included in the three-dimensional modeling data is applied to the three-dimensional shape information providing system. It can be stored in the DB 30 of (3) (S1). In this case, the stored geometrical tolerance rules may include, for example, geometrical tolerance symbols and rules for using symbols defined by the American Society of Mechanical Engineers (ASME), but is not limited thereto, for example, In another embodiment, the geometric tolerance rules may include geometric tolerance symbols and rules for use of symbols by the International Organization for Standardization (ISO).

Next, the first input unit 31 of the 3D shape information providing system 3 may receive 3D modeling data (S2). For example, when the three-dimensional shape information providing system 3 is implemented in the form of a server, the three-dimensional shape information providing system 3 may receive the three-dimensional modeling data from the external server 1 or the user device 2 . have. Alternatively, when the 3D shape information providing system 3 itself is implemented in the form of a user device, the 3D shape information providing system 3 is directly created by the user or transmits data from another 3D modeling tool in the user device. 3D modeling data can be input by the receiving method.

In this specification, the 3D modeling data is described based on the CAD file, but is not limited thereto, and the design data created by any 3D modeling tool such as 3ds Max, Sketch Up, CATIA, etc. It may correspond to 3D modeling data.

Next, the second input unit 32 of the 3D shape information providing system 3 may receive manufacturing information related to the design target of the 3D modeling data from the user (S3). For example, the three-dimensional shape information providing system 3 receives manufacturing information such as dimensions, tolerances, specification information, parts scheme, etc. required to produce the design target as a product on the screen on which the three-dimensional modeling data is output. can be input. Alternatively, the 3D shape information providing system 3 receives manufacturing information from the user device 2, or other software installed in the user device when the 3D shape information providing system 3 itself is implemented in the form of a user device. The production information may be input in a manner of receiving production information from the tool.

Next, the feature analysis unit 33 of the three-dimensional shape information providing system 3 analyzes the three-dimensional modeling data, identifies each feature included in the modeling data, and determines a geometric tolerance rule to be applied to each feature. can be (S4).

3 is a conceptual diagram illustrating an example of a feature included in 3D modeling data. Referring to FIG. 3 , the feature included in the 3D modeling data refers to information defining the size of a structure such as a pin 301 or a hole 302 ( FIG. 3 (a)) , may refer to information defining the size of a structure, such as a slot 303 or a tab 304 (FIG. 3(b)). Alternatively, the features included in the three-dimensional modeling data are a flat surface 305 (FIG. 3(c)), a freeform surface 306 (FIG. 3(d)), and a cylindrical surface 307 (FIG. 3(e)). )) can also refer to information defining the shape of a surface.

Referring back to FIGS. 1 and 2 , the feature analysis unit 33 is implemented as a software tool capable of analyzing the contents of 3D modeling data, such as CAD, to identify and apply features included in 3D modeling data. It is possible to determine the geometric tolerance rule to be made (S4). Reading 3D modeling data, such as CAD, whose format is known, can be implemented by a person skilled in the art, so a description thereof will be omitted herein to clarify the gist of the invention.

Next, the grammar checker 34 checks whether there is an error in the geometric tolerance related to the feature in the production information based on each feature specified by the feature analysis section 33 and the geometric tolerance rule for it ( S5). Error checking of geometric tolerance means whether the symbol used in the regulatory condition included in the geometric tolerance does not conform to the characteristics it indicates or does not conform to the regulatory condition, and whether there is a use of a symbol or numerical value that does not conform to the drafting principle in the geometric tolerance. Refers to the process of checking whether the geometric tolerance has symbols that do not match the features it indicates, and whether there are missing symbols related to the features in the geometric tolerances.

For the above operation, the symbol error detection unit 341 of the grammar checking unit 34 checks whether there is an error in the symbol included in the symbol tolerance according to the correlation between the symbol and the feature of the geometric tolerance and/or the meaning of the geometric tolerance. can In addition, the rule error detection unit 342 of the grammar checking unit 34 may check whether there is a mark that violates the rules in the geometric tolerance according to the correlation between the symbols and the features of the geometric tolerance and/or the meaning of the geometric tolerance. Also, the omission detecting unit 343 of the grammar checking unit 34 may check whether there are missing characters in the symbol tolerance according to the correlation between symbols and features of the geometric tolerance and/or the meaning of the geometric tolerance. The inspection result as described above may be processed in the form of inspection information defining the necessity of correction of the production information or recommended correction contents (S6).

4 to 15 are images for explaining some specific examples of geometric tolerance grammar check by the system for providing 3D shape information according to an embodiment.

과 같은 수정자(modifier) 기호가 공차 수치 뒤에 표시될 수 없으므로, 문법 검사부는 기하공차(401) 내의 수정자 기호를 오류로 검출할 수 있다. 나아가, 기하공차 규칙에 따르면 원통형 표면의 직경 20에 대한 공차 값은 20±0.1에 의해 0.2 이내로 설정되어야 하므로, 문법 검사부는 기하공차(401) 내의 수치 0.5를 오류로 검출할 수 있다.Referring to (a) of FIG. 4 , a case in which the geometric tolerance 401 of manufacturing information is input with respect to the cylindrical surface of the 3D modeling data, but there is no Datum Reference. According to the geometrical tolerance rule, the Φ symbol cannot appear in front of the tolerance figure if the target feature is a surface,

Since a modifier symbol, such as , cannot be displayed after the tolerance value, the grammar checker may detect a modifier symbol in the geometric tolerance 401 as an error. Furthermore, according to the geometric tolerance rule, since the tolerance value for the diameter 20 of the cylindrical surface must be set within 0.2 by 20±0.1, the grammar checker may detect the value 0.5 in the geometric tolerance 401 as an error.

중 어느 하나가 사용되도록 기하공차(401)의 기호가 수정되었으며, 기하공차 규칙에 따라 표면에 대한 공차에서 사용이 불가능한 수정자 기호가 삭제되었고, 기하공차의 수치 값이 규칙에서 허용되는 범위 내의 값이 되도록 수정되었다. 문법 검사부는 기하공차(401)에서 검출된 오류 정보만을 검사 정보로 출력할 수도 있고, 또는 기하공차(402)와 같이 오류가 수정된 기하공차의 예시 또는 제안값을 검사 정보로 출력할 수도 있다. FIG. 4B is an image showing the correct geometric tolerance 402 in which the above-described errors are corrected. i.e. the symbol corresponding to the cylindrical surface

The symbol of the geometric tolerance 401 is modified so that any one of them is used, the modifier symbol that cannot be used in the tolerance for the surface according to the geometric tolerance rule is deleted, and the numerical value of the geometric tolerance is a value within the range allowed by the rule modified to be this. The grammar checker may output only the error information detected in the geometric tolerance 401 as the check information, or output examples or suggested values of the geometric tolerance in which the error is corrected, such as the geometric tolerance 402 , as the check information.

로 수정하여 도 5의 (b)에 도시된 것과 같은 올바른 기하공차(502)를 검사 정보로 생성할 수 있다. 또한, 문법 검사부는 핀의 크기라는 특징에 대한 기하공차에서 사용될 수 있는 Φ 기호 및 수정자 기호 등을 추가하여 기하공차(502)를 생성할 수 있다. Fig. 5 (a) shows a case in which the geometric tolerance 501 is displayed with respect to the numerical value of the size of the pin as another example, but there is no reference reference thereto. The grammar checker identifies the symbol with an error in the geometric tolerance 501 as the symbol for the numerical value.

can be modified to generate the correct geometric tolerance 502 as shown in FIG. 5(b) as inspection information. In addition, the grammar checker may generate the geometric tolerance 502 by adding a Φ symbol and a modifier symbol that can be used in the geometric tolerance for the feature of the size of the pin.

As described above with reference to FIGS. 4 and 5 , the grammar checker indicates that the feature indicated by the geometric tolerance does not correspond to the symbol included in the geometric tolerance, and cannot be used according to the geometric tolerance rule related to the feature indicated by the geometric tolerance. Detecting as a grammatical error that a symbol is included in the geometric tolerance, and/or that a numerical value that does not fall within the range permitted by the geometric tolerance rule related to the characteristic indicated by the geometric tolerance is included in the geometric tolerance, etc. can

The types of violations of the geometric tolerance rules described in this specification and methods for correcting them are exemplary, and since those skilled in the art can easily understand from the geometric tolerance regulations of ASME or ISO, only some exemplary rules will be described in this specification. do it with

6A illustrates a case in which the geometric tolerance includes a symbol 701 defining the datum A with respect to a specific feature as another example, but the geometric tolerance for the corresponding datum is not included in the manufacturing information. In this case, as shown in FIG. 6B , the grammar checker may detect the unreferenced datum A as an error and generate check information to suggest that it be deleted from the geometric tolerance.

As another example, in FIG. 7A , the datum A is referred to in the geometric tolerance 701 , but the symbol defining the datum A does not exist in the geometric tolerance for the corresponding feature. In this case, the grammar checker suggests adding a symbol 702 defining the datum A referenced in the geometric tolerance 701 to the geometric tolerance as shown in FIG. Geometric tolerances can be created as inspection information.

As another example, in (a) of FIG. 8 , a symbol 802 defining a datum A in relation to a specific feature is included in the geometric tolerance, but a different letter (eg, B) is included in the geometric tolerance 802 for the feature. is used to indicate the case. In this case, the grammar checker proposes to revise the geometric tolerance 803 so that the definition of the datum and the characters used within the geometric tolerance match as shown in FIG. It can be created with inspection information.

As described above with reference to FIGS. 6 to 8 , the grammar checker indicates that the datum reference indicated by the geometric tolerance does not exist for the feature, that the datum reference defined for the feature is not used in the geometric tolerance, and / Alternatively, a datum reference defined for a corresponding feature and a symbol used in the geometric tolerance are different from each other, and the like may be detected as a grammatical error and check information may be generated.

As another example, FIG. 9A illustrates a case in which the geometric tolerance 901 is input for a free-form surface, but includes symbols that are not allowed in the geometric tolerance rule for the free-form surface. In this case, the grammar checker detects, as an error, that there is a Φ symbol and a modifier symbol that cannot be used in the geometric tolerance for the feature of a freeform surface as an error, and the information about the error or that shown in FIG. Similarly, the geometric tolerance 902 in which the error is corrected may be generated as inspection information.

가 사용되었으며, 수직 표면에 대한 기하공차 규칙에 부합되지 않도록 Φ 기호가 공차 수치 앞에 기재되고 수정자 기호가 공차 수치 뒤에 기재된 경우를 나타낸다. 이 경우, 문법 검사부는 수직 표면이라는 특징과 기하공차(1001)의 기호가 서로 상응하지 않는 것 및/또는 수직 표면의 기하공차 규칙에 따라 허용되지 않는 기호들이 기하공차(1001)에 포함된 것을 오류로서 검출하고, 이러한 오류의 존재 사실 및/또는 도 10의 (b)에 도시된 것과 같이 오류가 수정된 기하공차(1002)를 검사 정보로 생성할 수 있다. 예컨대, 오류가 수정된 기하공차(1002)에서 수직 표면은 기호

로 참조되며, Φ 기호 및 수정자 기호는 삭제되었다. 10 (a) is another example, a symbol that does not correspond to the feature in the geometric tolerance 1001 for the feature of a vertical surface

is used, and indicates the case where the Φ symbol is written before the tolerance value and the modifier symbol is written after the tolerance value to avoid conforming to the geometric tolerance rule for a vertical surface. In this case, the grammar checker makes an error that the feature of the vertical surface and the symbol of the geometric tolerance 1001 do not correspond to each other and/or that symbols that are not allowed according to the geometric tolerance rule of the vertical surface are included in the geometric tolerance 1001 As shown in FIG. 10 (b) , the presence of such an error and/or a geometric tolerance 1002 in which the error is corrected as shown in (b) of FIG. 10 may be generated as inspection information. For example, in the error-corrected geometric tolerance 1002, the vertical surface is

, the Φ symbol and the modifier symbol have been deleted.

가 사용되었으며, 기하공차 규칙에 따라 홀이라는 특징에 대한 기하공차의 입력 시 필요한 Φ 기호 및 수정자 기호가 기하공차(1101)에 누락된 경우를 나타낸다. 이 경우, 문법 검사부는 이러한 오류의 존재 사실 및/또는 도 11의 (b)에 도시된 것과 같이 오류가 수정된 기하공차(1102)를 검사 정보로 생성할 수 있다. 예컨대, 오류가 수정된 기하공차(1102)에서 평행 홀은 기호

로 참조되며, 홀에 대한 기하공차의 입력 시 요구되는 공차 수치 앞의 Φ 기호 및 수치 뒤의 수정자 기호가 추가되었다. 11 (a) is another example, a symbol that does not correspond to the geometric tolerance 1101 for the feature of a parallel hole

is used, and represents a case in which the Φ symbol and modifier symbol required when inputting the geometric tolerance for the hole feature according to the geometric tolerance rule are omitted in the geometric tolerance 1101 . In this case, the grammar checker may generate the fact that such an error exists and/or the geometric tolerance 1102 in which the error is corrected as shown in FIG. 11B as check information. For example, in the error-corrected geometric tolerance 1102, parallel holes are

When entering the geometric tolerance for a hole, the Φ symbol in front of the required tolerance value and the modifier symbol after the numerical value have been added.

로 참조되며, Φ 기호 및 참조하는 데이텀 B뒤의 수정자 기호는 삭제되었다. As another example, in FIG. 12 (a), the geometric tolerance 1201 is input for the feature of a vertical surface and refers to two datums A and B, but a symbol that does not correspond to the vertical surface is used and the surface It indicates that the Φ symbol before the tolerance value that cannot be used in the tolerance for , and the modifier symbol after the referenced datum B are included in the geometric tolerance 1201 . In this case, the grammar checker may generate the fact that such an error exists and/or the geometric tolerance 1202 in which the error is corrected as shown in FIG. 12B as check information in the same manner as in the above-described examples. For example, in the error-corrected geometric tolerance 1202, the vertical surface is

, the Φ symbol and the modifier symbol after the referencing datum B have been deleted.

중 어느 하나로 참조되며, 표면에 대한 기하공차에서 허용되지 않는 Φ 기호 및 수정자 기호는 삭제되었다.13 (a) is another example, the geometric tolerance 1301 is input for a feature that is a cylindrical surface, the datum reference is the size of the feature, but a symbol that does not correspond to the geometric tolerance 1301 is used, and for the surface Indicates that the Φ symbol before the tolerance value and the modifier symbol after the value that cannot be used in the tolerance are included. In this case, the grammar checker may generate the existence of such an error and/or the geometric tolerance 1302 in which the error is corrected as shown in FIG. 13(b) as check information in the same manner as in the above-described examples. For example, a symbol available in the geometric tolerance for the size of a feature called a cylindrical surface in the error-corrected geometric tolerance 1302 .

The Φ symbol and modifier symbol that are referenced as either one of them, which are not allowed in the geometric tolerance for the surface, have been deleted.

로 참조되며, 기하공차 규칙에 따라 홀에 대한 기하공차에서 요구되는 공차 수치 앞의 Φ 기호 및 공차 수치 뒤의 수정자 기호가 추가되었고, 공차 수치 값은 하위 세그먼트의 공차 수치 값이 상위 세그먼트의 공차 수치 값 이하가 되도록 수정되었다. 14(a) is another example in which the geometric tolerance 1401 indicates composite tolerance for a plurality of holes, but symbols not corresponding to the geometric tolerance 1401 are used, and the tolerance for holes is used. The Φ sign in front of the tolerance figure and the modifier sign after the figure, which should be included in the 0.8), indicating that there is an error greater than In this case, the grammar checker may generate the fact that such an error exists and/or the geometric tolerance 1402 in which the error is corrected as shown in FIG. 14B as check information in the same manner as in the above-described examples. For example, the compound tolerance for a number of holes in the error-corrected geometric tolerance 1402 is a symbol

In accordance with the geometrical tolerance rules, a Φ sign before the tolerance figure required in the geometrical tolerance for a hole and a modifier sign after the tolerance figure have been added, and the tolerance numerical value indicates that the tolerance numerical value of the lower segment is the tolerance numerical value of the upper segment. It has been modified to be less than the numerical value.

Fig. 15 (a) shows an example in which the geometric tolerance 1501 has the form of multiple segments for the feature of the size of the pin as another example, and the grammar check unit shows the geometric tolerance for the feature of the size of the pin By adding a Φ symbol and a modifier symbol that can be used in , the geometric tolerance 1502 in which the error of FIG. 15(b) is corrected can be created. In addition, in the geometric tolerance 1501, there is an error in which the numerical tolerance value (1.2) of the lower segment is greater than the numerical tolerance value (0.6) of the upper segment, and the grammar checker includes the numerical tolerance value of the lower segment. The modified geometric tolerance 1502 may be generated to be less than or equal to the tolerance numerical value of the upper segment. In the same manner as in the above-described examples, the fact that such errors exist and/or the geometric tolerance 1502 in which the errors are corrected may be generated as inspection information.

As described above, the grammar checker detects that the features indicated by the geometric tolerance do not correspond to the symbols included in the geometric tolerance, and that symbols that cannot be used according to the geometric tolerance rules related to the features indicated by the geometric tolerance are included in the geometric tolerance. A symbol required to be used according to the geometrical tolerance rule related to the feature indicated by the geometrical tolerance is omitted from the geometrical tolerance. included in the tolerance, the datum reference indicated by the geometrical tolerance does not exist for the feature, the datum reference defined for that feature is not used in the geometrical tolerance, and/or the datum reference defined for the feature and symbols used in geometric tolerance are different from each other as grammatical errors, and check information can be generated.

However, the types of 3D features that can be inspected using the 3D shape information providing system according to the embodiments, the types of geometric tolerance rules, and applicable symbols are not limited to the examples described in this specification.

1 and 2 again, the output unit 35 of the three-dimensional shape information providing system 3 generates an output screen to be provided to the user after the geometric tolerance grammar check by the grammar checker 34 is completed. can The output screen of the three-dimensional shape information providing system 3 according to the embodiments is conventional in that it has a form in which a projection view of three-dimensional modeling data and production information based on a specific point of view are arranged on one two-dimensional plane. differentiated from the technology of A user using the three-dimensional shape information providing system 3 according to the embodiments can check the projection view of the three-dimensional modeling data and its production information through the output screen provided by the output unit 35, so that the conventional There is no need to switch between a 3D modeling tool and a separate tool for inputting geometric tolerances.

In addition, the production information provided to the user through the output screen in the three-dimensional shape information providing system 3 according to the embodiments is obtained from the production information initially input through the second input unit 32 through the grammar checker 34 . It may be manufacturing information in which a grammatical error about geometric tolerance has been corrected. Alternatively, in another embodiment, the output unit 35 may configure the output screen to output the check information by the grammar checker 34 together with the 3D modeling and production information initially input by the user. In this case, the inspection information may include a list of errors included in the geometric tolerance of the manufacturing information, a correction suggestion for the error, and/or a geometric tolerance in which the error is corrected.

In one embodiment, the three-dimensional shape information providing system 3 may provide a full view function that simultaneously provides a plurality of projections having different viewpoints and manufacturing information corresponding to each projection.

16 is an image illustrating an exemplary output screen by the system for providing three-dimensional shape information according to an embodiment.

Referring to FIG. 16 , the output screen provided by the 3D shape information providing system in this embodiment includes a plurality of projections 1601 and 1602 of 3D modeling data obtained from different viewpoints. In addition, the output screen includes production information necessary to commercialize the structure of the 3D modeling data. The fabrication information may include geometric tolerances 1611-1619 input in relation to the type, size, surface shape, etc. of the 3D modeling data shown through any one of the plurality of projections 1601 and 1602. .

In addition, in one embodiment, the production information is the annotation information 1602 indicating the operator's instructions or the interpretation of the drawing in manufacturing the 3D modeling data into a product, and/or the part name or part of the 3D modeling data. Part information 1621 defining a number and the like may be further included.

According to the system and method for providing 3D shape information according to the above-described embodiments, it is possible to check and edit 3D modeling data and manufacturing information such as dimensions, tolerances, specification information, and parts scheme required for product production through one view. This improves the quality of drawings, and the operator does not need to design a 2D (2D) drawing separately or switch between multiple views, thereby reducing work time and reducing the data of 3D shape information and fabrication information. There is this. In addition, the system and method for providing 3D shape information according to the embodiments do not require separate equipment, which can contribute to cost reduction, and the 3D shape information and the 2D drawing information do not match through the geometric tolerance grammar check through the grammar checker. There is an advantage in that errors can be prevented.

The operation by the method for providing three-dimensional shape information according to the embodiments described above may be implemented at least partially as a computer program and recorded in a computer-readable recording medium. A computer-readable recording medium in which a program for implementing an operation according to the method according to the embodiments is recorded and includes all kinds of recording devices in which computer-readable data is stored. Examples of the computer-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, and optical data storage device. In addition, the computer-readable recording medium may be distributed in a network-connected computer system, and the computer-readable code may be stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing the present embodiment may be easily understood by those skilled in the art to which the present embodiment belongs.

Although the present invention as described above has been described with reference to the embodiments shown in the drawings, it will be understood that these are merely exemplary and that various modifications and variations of the embodiments are possible therefrom by those of ordinary skill in the art. However, such modifications should be considered to be within the technical protection scope of the present invention. Accordingly, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

Claims (11)

a first input unit configured to receive three-dimensional modeling data including one or more features;
a database storing geometric tolerance rule information defining a grammar of geometric tolerance for the three-dimensional modeling data;
a second input unit configured to receive manufacturing information defining a geometric tolerance associated with the one or more features required to produce the 3D modeling data as a product using the screen on which the 3D modeling data is output;
a feature analysis unit configured to identify the one or more features by analyzing the three-dimensional modeling data, and determine, from the geometric tolerance rule information, a geometric tolerance rule to be applied to the identified one or more features;
a grammar checker configured to generate check information for the fabrication information by detecting an error of the geometric tolerance included in the fabrication information based on the geometric tolerance rule; and
An output unit configured to output the three-dimensional modeling data together with at least one of the manufacturing information and the inspection information,
Each of the one or more features includes information on the size of the structure included in the three-dimensional modeling data, or information defining the surface shape or structure of the structure included in the three-dimensional modeling data,
The geometric tolerance rule includes information on at least one of a datum type, a tolerance zone, a symbol, a regulation condition, whether a dimension is displayed, and a dimension regulation associated with the feature,
The grammar checker,
The correlation between the symbol of the geometric tolerance included in the production information and the feature, the correlation between the feature and the regulation condition of the geometric tolerance included in the production information, the rules for using characters included in the production information, and the The three-dimensional shape information providing system further configured to detect a geometric tolerance that violates the geometric tolerance rule by examining at least one of missing characters in the production information.
delete delete According to claim 1,
The output unit, three-dimensional shape information providing system further configured to output the projection view of the three-dimensional modeling data based on one or more viewpoints and the production information as one two-dimensional information.
5. The method of claim 4,
The output unit, a three-dimensional shape information providing system further configured to simultaneously output a plurality of the projections having different viewpoints and the manufacturing information corresponding to each of the plurality of projections.
storing geometric tolerance rule information defining a grammar of geometric tolerance for three-dimensional modeling data in a database of a three-dimensional shape information providing system;
receiving, by the three-dimensional shape information providing system, the three-dimensional modeling data including one or more features;
The three-dimensional shape information providing system receives manufacturing information defining a geometric tolerance associated with the one or more features necessary to produce the three-dimensional modeling data as a product, using the screen on which the three-dimensional modeling data is output. step;
identifying, by the three-dimensional shape information providing system, the one or more features by analyzing the three-dimensional modeling data;
determining, by the three-dimensional shape information providing system, a geometric tolerance rule to be applied to the identified one or more features from the geometric tolerance rule information;
generating, by the three-dimensional shape information providing system, inspection information for the manufacturing information by detecting an error in the geometric tolerance included in the manufacturing information based on the geometric tolerance rule; and
Comprising the step of outputting, by the three-dimensional shape information providing system, the three-dimensional modeling data together with at least one of the manufacturing information and the inspection information,
Each of the one or more features includes information on the size of the structure included in the three-dimensional modeling data, or information defining the surface shape or structure of the structure included in the three-dimensional modeling data,
wherein the geometric tolerance rule includes information on at least one of a datum type, a tolerance zone, a symbol, a regulation condition, whether a dimension is displayed, and a dimension regulation associated with the feature,
The generating of the inspection information includes, by the three-dimensional shape information providing system, a correlation between a symbol of a geometric tolerance included in the manufacturing information and the feature, a regulation condition of the geometric tolerance included in the manufacturing information, and the characteristic 3D shape information comprising the step of detecting a geometric tolerance that violates the geometric tolerance rule by examining one or more of a correlation between Way.
delete delete 7. The method of claim 6,
The outputting step includes, by the three-dimensional shape information providing system, outputting, by the three-dimensional shape information providing system, the projection view of the three-dimensional modeling data based on one or more viewpoints and the production information as one two-dimensional information HOW TO PROVIDE INFORMATION.
10. The method of claim 9,
The step of outputting the two-dimensional information includes, by the three-dimensional shape information providing system, simultaneously outputting, by the three-dimensional shape information providing system, a plurality of the projections having different viewpoints and the manufacturing information corresponding to each of the plurality of projections How to provide dimensional shape information.
A computer program stored in a computer-readable recording medium in combination with hardware to execute the method for providing three-dimensional shape information according to any one of claims 6, 9 and 10.

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