KR20210059365A - Interference checking method between 3d models, and recording medium storing program for executing the same - Google Patents

Abstract

The present invention relates to an interference checking method between three-dimensional models and a recording medium storing a program for executing the same. In accordance with the present invention, the interference checking method between the three-dimensional models comprises: a first step in which a data conversion unit converts a CAD data storing design information of a large structure made of one or more models into a lightweight data including three-dimensional triangle data; a second step in which a data display unit uses the lightweight data and displays the one or more models by a three-dimensional image (300) and a tree structure (200); a third step in which an inspection condition input unit receives interference conditions including one or more of an inspection-type, proximity allowance range (800), access allowance error, and exclusion level from a user; a fourth step in which an inspection target input unit receives an input of one or more inspection target models from one of the three-dimensional image (300) and the tree structure (200) from the user; a fifth step in which an interference inspection unit performs an interference inspection on the inspection target models; a sixth step in which a result data generation unit generates an interference result data including an interference-type (700), interference distance (710), interference position (720), and interference image (950); and a seventh step to process and output the interference result data. The present invention aims to provide an interference checking method between three-dimensional models, and a recording medium storing a program for executing the same, which is able to generate interference inspection results into a file including an image.

Description

Interference inspection method of 3D model and recording medium storing program that can execute it {INTERFERENCE CHECKING METHOD BETWEEN 3D MODELS, AND RECORDING MEDIUM STORING PROGRAM FOR EXECUTING THE SAME}

The present invention relates to a method for checking interference of a three-dimensional model and a recording medium in which a program capable of executing the same is stored.

In general, when designing large structures such as ships and power plants, it should be possible to minimize interference problems that may occur during model assembly and mounting by inspecting in advance for interference with each member or model on the designed drawing.

In the conventional case, there is a problem in that the number of man-hours for designing is increased because a person in charge of interference testing, such as a designer, directly performs interference testing.

Currently, the interference test result is derived using the interference test function of CAD tool or commercial software, but in the case of interference test using CAD tool or software, it is difficult to set the member or model to be excluded from the interference test, and interference has occurred. Not only is it not easy for the user to customize the condition that is judged to be an interference, it is difficult to easily set the function of automatically generating an image of the member or model in which interference has occurred and saving it as a specific file. Due to the extremely low reliability and accuracy, there is still a high limit of design input man-hours because a designer's review process is required.

The present invention provides a recording medium in which a user can determine interference test conditions for each model on a design drawing, and an interference test method for a three-dimensional model that generates an interference test result as a file including an image and a program that can be executed. There is a purpose to do it.

The interference inspection method of a 3D model according to the present invention comprises: a first step of converting the CAD data storing design information of a large structure composed of at least one model by a data conversion unit into lightweight data including 3D triangular data; A second step of displaying, by a data display unit, the at least one model in a 3D image and a tree structure using the lightweight data; A third step of receiving, by the test condition input unit, an interference condition including at least one of a test type, a proximity allowable range, a connection allowance error, and an exclusion level from a user; A fourth step of receiving at least one inspection object model from any one of the 3D image and the tree structure from a user by the inspection object input unit; A fifth step of performing, by an interference test unit, an interference test on the test target model; A sixth step of generating, by the result data generation unit, interference result data including an interference type, an interference distance, an interference location, and an interference image; And a seventh step of processing and outputting the interference result data by a result output unit, wherein the 3D triangular data is aligned using a KD Tree algorithm, and the interference test type is group test, model test, equipment test, and movement. It becomes any one of inspection, and the interference type is any one of proximity, contact, and penetration.

Further, after the seventh step, an eighth step of converting the interference result data into one of CSV, EXCEL, or HTML and storing the data in a storage device by the file generation unit.

In addition, the fifth step includes a step 5-1 in which the interference test unit selects a first model and a second model from among the test target models; Step 5-2 of the interference test unit performing an interference test according to the interference condition to determine whether interference between the first model and the second model occurs using the 3D triangular data, and generating interference information; Step 5-3 in which the interference test unit determines a maximum interference point and an interference direction using the interference information, and calculates an interference depth; 5-4 step of determining the interference type by the interference tester; 5-5 steps of determining the interference location by the interference tester; The interference information includes interference information indicating whether or not the first model and the second model interfere, and the interference distance is a distance between any one outer surface of the first model and any one outer surface of the second model. , The maximum interference point is the deepest point among points where interference occurs between the first model and the second model, and the interference direction is formed using an interference point that is a point at which the interference ends in the first model and the second model. It is the direction of the water line connecting the maximum interference point in the virtual plane, and the interference depth is the length of the water line.

In addition, between the third step and the fourth step, the determination condition input unit 3-1 step of receiving at least one of the proximity allowable range and the contact allowable error from the user.

In addition, between the step 3-1 and the fourth step, step 3-2 in which an external level input unit receives the exclusion level from a user, and in the fifth step, the interference test unit includes the exclusion level. If the parent node value for the node of the height of 3D triangular data of the first model corresponding to is equal to the parent node value for the node of the height of 3D triangular data of the second model corresponding to the exclusion level, it corresponds to the exclusion level. The interference test is not performed for nodes having a height less than the height of the 3D triangular data of the first model and nodes having a height less than the height of the 3D triangular data of the second model corresponding to the exclusion level.

In addition, when the test type in the third step is a group test, in the fourth step, the test target input unit receives two different models among the at least one model as the test target model, and the first model Is one of the two models, and the second model is the other one of the two models.

In addition, when the inspection type in the third step is a model inspection, in the fourth step, the inspection object input unit receives one of the at least one model as the inspection object model, and the first model is the One of the member models constituting the one model received by the inspection object input unit, and the second model is the other one of the member models constituting the one model received by the inspection subject input unit.

In addition, when the inspection type in the third step is equipment inspection, in the fourth step, the inspection object input unit receives one of the at least one model as the inspection object model, and the first model is the It is one model, and the second model is any one of at least one or more models surrounding the hexagonal surface of the first model.

In addition, when the test type of the third step is a movement test, the movement path input unit further includes a third step of receiving a movement path from a user between the third step and the fourth step, and the third step In step 4, the inspection object input unit receives two different models of the at least one model, a fixed model and a moving model as the inspection object model, and the movement path is a movement direction, a movement start position, a movement end position, and a movement. Including a gap, the first model is the fixed model, the second model is the moving model, and in the fifth step, the interference tester moves the second model in a direction corresponding to the moving direction. While moving from the start position to the end position of movement, an interference test is performed on the first model and the second model at each movement interval.

In addition, in the sixth step, the result data generation unit displays the interference type as proximity when the interference distance is within the proximity tolerance, and when the interference distance is within the contact tolerance, the interference type is contact. When the interference distance exceeds the allowable contact error and is negative, the interference type is indicated as penetration.

In addition, in the sixth step, the result data generator determines the 3D coordinate of the center point of the virtual plane as the interference position.

According to the present invention, in performing an interference test on a model on a design drawing, a user can set an interference test condition, so that an interference test at a level desired by the user can be performed.

According to the present invention, by generating an interference test result for a model on a design drawing as a file including an image, visibility and convenience may be improved when a user utilizes the interference test result.

1 is a block diagram schematically showing a sequence of a three-dimensional interference test method according to the present invention.
2 is a flow chart showing a method for checking interference of a 3D model according to the present invention.
3 is a diagram showing a 3D image displayed by a data display unit according to the present invention.
4 is a diagram showing a tree structure displayed by a data display unit according to the present invention.
5 is a diagram showing an inspection object model received by an inspection object input unit according to the present invention.
6 is a diagram showing a sequence of performing an interference test according to the present invention.
7 is a view for explaining a method of determining an interference type according to an interference distance by a result data generation unit in the interference test method of a 3D model according to the present invention.
FIG. 8 is a diagram for explaining a method in which an interference test is not performed according to an exclusion level in the interference test method of a 3D model according to the present invention.
9 is a diagram showing an inspection target model according to an inspection type in the interference inspection method of a three-dimensional model according to the present invention.
10 is a diagram illustrating a movement path input unit of a method for checking interference of a 3D model according to the present invention.
11 is a diagram illustrating a method of determining a maximum interference point, an interference direction, and an interference depth by an interference tester in the interference test method of a 3D model.
12 is a diagram showing an output of interference result data according to the present invention.
13 to 16 are diagrams showing an interference image according to the present invention.
17 is a diagram illustrating a file generated by a file generation unit according to the present invention.

Embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of users or operators. Therefore, the definition should be made based on the contents throughout the present specification.

Each drawing attached below is as follows.

1 is a block diagram schematically showing a sequence of a three-dimensional model interference test method according to the present invention, FIG. 2 is a flow chart showing a three-dimensional model interference test method according to the present invention, and FIG. 3 is the present invention Fig. 4 is a diagram showing a tree structure 200 according to the present invention, showing a monitor screen on which an interference test program of a 3D model is executed according to the present invention. 5 shows a model to be inspected according to the present invention, and FIG. 6 shows a sequence of performing an interference test according to the present invention. 7 is for explaining a method of determining the interference type 700 according to the interference distance 710 by the result data generation unit in the interference inspection method of a 3D model according to the present invention, and FIG. 8 is a 3D model according to the present invention. This is to explain how the interference test is not performed according to the exclusion level in the model's interference test method. 9 is for explaining a method of receiving an inspection object model according to an inspection type in the interference inspection method of a three-dimensional model according to the present invention, and FIG. 10 is an interference inspection method of a three-dimensional model according to the present invention. It is a diagram showing the movement path input unit of. FIG. 11 is for explaining a method of determining a maximum interference point 900, an interference direction 910, and an interference depth in the interference test method of a 3D model, and FIG. 12 shows interference result data according to the present invention. It's just to explain. 13 to 16 are for explaining the interference image 950 expressed in the interference result data according to the present invention, and FIG. 17 is a view showing the contents of a file generated by the file generation unit according to the present invention.

First, referring to FIG. 1, in the method for checking interference of a 3D model according to the present invention, the data conversion unit converts CAD data storing design information of a large structure composed of at least one model into lightweight data including 3D triangular data. (S100)

The 3D triangular data included in the lightweight data is that design information on a model constituting the large structure is arranged in the form of a binary tree using a K-D tree algorithm. As the 3D triangular data is sorted using the KD tree algorithm, it is possible to reduce the time required for the interference check to be performed, and to exclude the interference check from being performed for nodes below a certain level of the binary tree. .

When the light weight data is generated through the step S100, the data display unit displays the at least one model as a 3D image 300 and a tree structure 200 using the light weight data. (S200) Referring to FIG. The 3D image 300 represents a large structure composed of the at least one model stored in the lightweight data in three dimensions. In this case, in the 3D image 300, the at least one or more models may be expressed opaquely in different colors, and visibility for each model may be improved through this. In addition, referring to FIG. 3, the data display unit may display at least one or more models constituting the large structure in a tree structure 200, and through the tree structure 200, an inspection target model to be subjected to an interference test You can choose.

Through the step S200, when at least one or more models constituting a large structure are expressed as a 3D image 300 and a tree structure 200, the test condition input unit receives the interference test type, proximity allowance range 800, and access allowance from the user. An interference condition including at least one of an error and an exclusion level is input (S300).

The proximity allowable range 800 is a reference range in which two models subject to interference test can be determined as proximity, and the contact allowable error (not shown) may determine two models subject to interference test as contact. It is a standard range. A method of determining whether two models that are multi-phase in the interference test are proximity or contact using the proximity allowable range 800 and the contact allowance error will be described in detail below with reference to FIG. 6.

The exclusion level is the level of the binary tree for determining nodes that may not be compared in order to perform an interference test using the 3D triangular data represented by the binary tree. A method of performing an interference test using the exclusion level will be described in detail below with reference to FIG. 7.

The inspection type is any one of group inspection, model inspection, equipment inspection, and mobile inspection. A method of performing an interference test according to the test type will be described in detail below with reference to FIG. 8.

In the step S300, after the test condition input unit receives the interference condition, the test target input unit receives at least one test target model from any one of the 3D image 300 and the tree structure 200 from the user. (S400 )

The inspection target model is at least one model constituting a large structure to be subjected to interference inspection, and a user selects a specific node in the tree structure 200. At this time, at least one specific node selected by the user in the tree structure 200 becomes the interference target model 400 that the test target input unit receives from the user. In addition, the user may input the interference target model 400 to the inspection target input unit by dragging and dropping the 3D image 300 from the data display unit. Referring to FIG. 4, the interference target model 400 received from the user by the inspection target input unit is represented by a tree structure 200, and at least one member model of the member models constituting the interference target model 400 is selected. By selecting from the tree structure 200 of the interference target model 400, the range of the model subject to the interference test may be further narrowed.

When the test target input unit receives the test target model in step S400, the interference test unit performs an interference test on the test target model (S500).

5, in the step S500, the interference tester selects the first model 500 and the second model 600 among the test target models (S510), and the interference tester selects the structure information and 3D triangular data. The interference information is generated by performing an interference test according to the interference condition to determine whether interference between the first model 500 and the second model 600 occurs (S520). When the interference information is generated, the interference information is generated. The inspection unit determines the maximum interference point 900 and the interference direction 910 using the interference information and calculates the interference depth (S530), and the interference inspection unit determines the interference type 700 and the interference location 720 (S540, S550)

In the step S300, if the test condition input unit receives an exclusion level from among the interference conditions, the interference test unit in step S520 determines a node of a level corresponding to the exclusion level in the 3D triangular data of the first model 500. 3D triangular data of the first model 500 corresponding to the exclusion level when the parent node value and the parent node value for the node of the level corresponding to the exclusion level in the 3D triangular data of the second model 600 are the same In the 3D triangular data of the second model 600 corresponding to the level less than the level and the exclusion level, the interference check is not performed for nodes of a level less than the level. Referring to FIG. 7, when the value of the exclusion level input from the user by the inspection condition input unit is 2, the parent node of the node corresponding to level 2 of the 3D triangular data of the first model 500 and the second It can be seen that the parent node of the node corresponding to the 2nd level of the 3D triangular data of the model 600 is different. In this case, an interference test is performed on the second level of the 3D triangular data of the first model 500 and its lower node and the second level of the 3D triangular data of the second model 600 and its lower node. If the value of the exclusion level input from the user by the inspection condition input unit is 3, the parent node of the node corresponding to the 3 level of the 3D triangular data of the first model 500 and the second model 600 It can be seen that the parent node of the node corresponding to the 3 levels of the 3D triangular data of is the same. In this case, the interference test is not performed for the third level of the 3D triangular data of the first model 500 and its lower node and the third level of the 3D triangular data of the second model 600 and the lower node thereof. Through this, the interference test may be omitted for some of the member models constituting the first model 500 and the second model 600, and thus the speed of the interference test may be improved.

Referring to FIG. 8(a), when the test type in step S300 is a group test, in step S400, the test target input unit receives two different models among the at least one model as the test target model. , The first model 500 is one of the two models, and the second model 600 is the other one of the two models.

Referring to FIG. 8(b), when the test type in step S300 is model test, in step S400, the test target input unit receives one of the at least one model as the test target model. The first model 500 is any one of member models constituting the one model received by the inspection target input unit, and the second model 600 is the one model constituting the one model inputted by the inspection subject input unit. It becomes the other one of the member models.

Referring to FIG. 8(c), when the inspection type in the step S300 is equipment inspection, in the step S400, the inspection object input unit receives one of the at least one model as the inspection object model, and the The first model 500 is the one model, and the second model 600 is any one of at least one or more models surrounding the six sides of the first model 500.

Referring to FIG. 8(d), when the test type in the step S300 is a movement test, the step S300 and the step S400 further include a step of receiving a moving pass from a user between the step S300 and the step S400, and the step S400 In the step, the inspection object input unit receives two different models of the at least one model, a fixed model and a moving model, as the inspection object model. In addition, the movement path includes a movement direction 820, a movement start position 830, a movement end position 840, and a movement interval 810, and the first model 500 is the fixed model, and the first The second model 600 becomes the moving model. At this time, in the step S500, while the interference tester moves the second model 600 in a direction corresponding to the movement direction 820 from the movement start position 830 to the movement end position 840, the movement interval An interference test is performed on the first model 500 and the second model 600 every 810.

The interference information includes information on whether there is interference between the first model 500 and the second model 600. Referring to FIG. 10, the maximum interference point 900 is the deepest point among points where interference occurs between the first model 500 and the second model 600, and the interference direction 910 is the first model. It is the direction of the water line 940 connecting the maximum interference point 900 in the virtual plane 930 formed using the interference point 920, which is the point where the interference ends in 500 and the second model 600, and the The interference depth is the length of the water line 940.

When the interference tester completes the interference test in step S500, the result data generation unit generates interference result data including an interference type 700, an interference distance 710, an interference location 720, and an interference image 950. .(S600)

The interference distance 710 is a distance between any one outer surface of the first model 500 and any one outer surface of the second model 600. In addition, when the interference distance 710 is within the proximity allowable range 800 received by the inspection condition input unit in step S300, the result data generator displays the interference type 700 as proximity, and the interference distance When 710 is within the contact tolerance (not shown) received by the inspection condition input unit in step S300, the result data generation unit displays the interference type 700 as a contact, and the interference distance 710 is In the case of a negative number while deviating from the allowable contact error (not shown) received by the inspection condition input unit in step S300, the result data generation unit generates the interference result data by marking the interference type 700 as penetration.

The interference position 720 is a three-dimensional coordinate representing the center point of the virtual plane 930 formed by using the interference point 920 in step S500.

The interference image 950 is a three-dimensional representation of the shapes of the first model 500 and the second model 600 around the interference location 720.

When the result data generation unit generates the interference result data in step S600, the result output unit outputs the interference result data (S700).

Referring to FIG. 11, in the interference result data output by the result output unit, the first model 500, the second model 600, the interference type 700, the interference distance 710, and the interference location 720 are tabled. Organize it in a format and show it to the user.

In addition, the result output unit may receive an output condition from a user and process the interference result data. 12 is the interference image 950 so that the result output unit selectively displays models other than the first model 500 and the second model 600, which are the targets of the interference test, in the interference image 950 of the interference result data. ) Is processed, and FIGS. 13 and 14 show colors in the first model 500 and the second model 600 in the interference image 950 of the interference result data. The interference image 950 is processed to improve visibility of the first model 500 and the second model 600 by adding shade or transparency. In addition, FIG. 15 is a first model 500 that displays the interference location 720 in the interference image 950 of the interference result data by the result output unit, and is the object of the interference test based on the interference location 720 And the interference image 950 is processed so that the second model 600 is enlarged, reduced, or fixed.

After the step S600 or S700 is performed, the file generation unit may convert the interference result data into any one of CSV, EXCEL, or HTML and store it in a storage device (S800).

The contents of the file include the first model 500, the second model 600, the interference type 700, the interference distance 710, a cutaway view of the interference location 720 and the interference image 950, and It may include a 3D image including at least one of the shaving. FIG. 16(a) shows the contents of the HTML file generated in the step S800, and FIG. 16(b) shows the contents of the Excel file generated in the step S800.

Through the steps S700 and S800, the interference test method of the three-dimensional model according to the present invention includes the interference test result to the first model 500 and the second model 600, including the interference image 950. By automatically generating the result data and any one of CSV, EXCEL, or HTML files, cost and time can be saved in performing interference inspection.

The present invention described as described above can be realized by hardware, software, or a combination thereof, and can be configured as a computer-readable recording medium recorded as a program to perform the above-described steps, and to be mounted on a computer system. I can do it.

Although the present invention has been described through the embodiments with reference to the accompanying drawings, it will be said that it is not limited to these embodiments, and it will be apparent that various modifications and variations can be made by the person concerned in the field. It will be said that it can be attributed to the present invention within the scope of the technical idea claimed through the scope.

200: tree structure 300: 3D image
400: interference target model 500: first model
600: second model 700: interference type
710: interference distance 720: interference location
800: proximity allowable range 810: movement interval
820: moving direction 830: moving start position
840: heterogeneous end position 900: maximum interference point
910: interference direction 920: interference point
930: virtual plane 940: repair
950: interference image

Claims (12)

A first step of converting the CAD data in which the design information of the large structure composed of at least one model is stored into light weight data including 3D triangular data;
A second step of displaying the at least one model in a 3D image 300 and a tree structure 200 using the light weight data by a data display unit;
A third step of receiving, by the test condition input unit, an interference condition including at least one of a test type, a proximity tolerance range 800, a connection tolerance error, and an exclusion level from a user;
A fourth step of receiving at least one inspection object model from any one of the 3D image 300 and the tree structure 200 from a user by the inspection object input unit;
A fifth step of performing, by an interference test unit, an interference test on the test target model;
A sixth step of generating, by the result data generation unit, interference result data including an interference type 700, an interference distance 710, an interference location 720, and an interference image 950; And
A seventh step of processing and outputting the interference result data by a result output unit; and
The 3D triangular data is sorted using the KD Tree algorithm,
The interference test type is any one of group test, model test, equipment test, and mobile test,
The interference type 700 is any one of proximity, contact, and penetration.
The method of claim 1,
After the seventh step, an eighth step of converting the interference result data into one of CSV, EXCEL, or HTML and storing the data in a storage device by a file generator.
The method of claim 1,
The fifth step
Step 5-1 of the interference tester selecting a first model 500 and a second model 600 from among the test target models;
Step 5-2 of the interference tester performing an interference test according to the interference condition to determine whether interference between the first model 500 and the second model 600 occurs using the 3D triangular data, and generating interference information;
Step 5-3 in which the interference test unit determines a maximum interference point 900 and an interference direction 910 using the interference information, and calculates an interference depth;
Step 5-4 in which the interference test unit determines the interference type 700;
Step 5-5 in which the interference test unit determines the interference location 720;
The interference information includes interference presence information indicating whether or not interference between the first model 500 and the second model 600,
The interference distance 710 is a distance between any one outer surface of the first model 500 and any one outer surface of the second model 600,
The maximum interference point 900 is the deepest point among points where interference occurs between the first model 500 and the second model 600,
The interference direction 910 is the maximum interference point 900 in the virtual plane 930 formed using the interference point 920, which is a point where the interference ends in the first model 500 and the second model 600. Is the direction of the water line 940 that connects
The interference depth of the interference inspection method of the 3D model is the length of the water line (940).
The method of claim 3,
Between the third step and the fourth step
3-1 step of receiving at least one of the proximity allowable range 800 and the contact allowable error from a user by the determination condition input unit.
The method of claim 4,
Between the 3-1 step and the fourth step
Including; step 3-2 of receiving the exclusion level input unit inputting the exclusion level from the user
In the fifth step, the interference tester includes a parent node value for a node having a height of 3D triangular data of the first model 500 corresponding to the exclusion level and the second model 600 corresponding to the exclusion level. When the parent node value for the node of the 3D triangular data height is the same, a node having a height smaller than the 3D triangular data height of the first model 500 corresponding to the exclusion level and the second model 600 corresponding to the exclusion level A method of interference testing for a 3D model that does not perform interference testing for nodes with a height smaller than the 3D triangular data height of ).
The method of claim 3,
When the test type of the third step is a group test,
In the fourth step, the inspection object input unit receives two different models among the at least one or more models as the inspection object models,
The first model 500 is any one of the two models,
The second model 600 is the interference inspection method of a three-dimensional model that becomes the other one of the two models.
The method of claim 3,
When the inspection type of the third step is a model inspection,
In the fourth step, the inspection object input unit receives one of the at least one or more models as the inspection object model,
The first model 500 is any one of member models constituting the one model received by the inspection target input unit,
The second model 600 is another one of member models constituting the one model received by the inspection object input unit.
The method of claim 3,
When the inspection type of the third step is equipment inspection,
In the fourth step, the inspection object input unit receives one of the at least one or more models as the inspection object model,
The first model 500 is the one model,
The second model 600 is any one of at least one or more models surrounding a hexagonal surface of the first model 500.
The method of claim 3,
When the inspection type of the third step is mobile inspection,
Between the third step and the fourth step, the moving path input unit further includes a third step of receiving a moving path from a user,
In the fourth step, the inspection object input unit receives two different models of the at least one or more models, a fixed model and a moving model, as the inspection object model,
The movement path includes a movement direction 820, a movement start position 830, a movement end position 840, and a movement interval 810,
The first model 500 is the fixed model,
The second model 600 is the moving model,
In the fifth step, the interference inspection unit moves the second model 600 in a direction corresponding to the movement direction 820 from the movement start position 830 to the movement end position 840, while the movement interval 810 ) Interference inspection method of a three-dimensional model for performing an interference test on the first model 500 and the second model 600 each.
The method of claim 4,
In the sixth step, the result data generation unit,
When the interference distance 710 is within the proximity allowable range 800, the interference type 700 is displayed as proximity,
When the interference distance 710 is within the allowable contact error, the interference type 700 is indicated as a contact,
When the interference distance 710 is negative while outside the allowable contact error, the interference type 700 is indicated by penetration.
The method of claim 4,
In the sixth step, the result data generation unit
Interference inspection method of a 3D model in which the 3D coordinate of the center point of the virtual plane 930 is determined as the interference position 720.
A computer program stored in the computer-readable recording medium in order to execute the method of any one of claims 1 to 11 using a computer.

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