JP2021149404A - Screw screwing state determination program, screw screwing state determination method and information processing system - Google Patents

Abstract

To provide information submitted to confirmation of a screwing state of a screw.SOLUTION: An information processor 101 extracts components P1-P6 included in a bounding box 911 of a screw 900 in a model M1, from a bit map image 910 of the model M1. The information processor 101 identifies, as a screwing component, the component P5 which is arranged below a height h of a screw head of the screw 900 and in which a distance from a center axis of the screw 900 is in a radius of a screw diameter of the screw 900, out of the extracted components P1-P6. The information processor 101 identifies components P2-P4 which are arranged below the height h of the screw head of the screw 900, and are above the identified screwing component P5, as screwed components out of the extracted components P1-P6. The information processor 101 identifies, as other components, components P1, P6 being different from both of the screwing component and the screwed components, out of the components P1-P6 extracted.SELECTED DRAWING: Figure 10

Description

The present invention relates to a screw fastening state determination program, a screw fastening state determination method, and an information processing system.

Conventionally, in the design review in the design process of the manufacturing industry, the designed model is checked for design mistakes from various viewpoints such as functionality, productivity, reliability, and cost. There is. For example, a check is made regarding the fastening state of screws for fastening a plurality of parts included in a product.

Prior art includes, for example, a model design verification device that checks the consistency between a male screw model designed by 3D-CAD and a tap hole model. Further, there is an interference check device that checks the interference between the component and other arranged components based on the shape information of the component and the mounting position information of the component.

Japanese Unexamined Patent Publication No. 2007-213120 Japanese Unexamined Patent Publication No. 2006-48221

However, in the prior art, there is a problem that it takes time and effort to check the tightened state of the screws included in the designed model. For example, when visually checking the 3D model displayed on the screen and manually checking the fastening state of the screws, the fastening parts and the to be fastened parts are specified and checked for each screw. As a result, the working time and workload increase.

In one aspect, it is an object of the present invention to provide information for confirming the fastened state of a screw.

In one embodiment, based on the assembly data of the model to be determined, parts included in a predetermined range around the screw in the model are extracted, and among the extracted parts, the central axis of the screw Fastening parts include parts that are below the height of the screw neck of the screw and the distance from the central axis of the screw is within a predetermined length according to the screw diameter of the screw, with the screw head direction facing upward. Among the specified and extracted parts, the parts that are below the height of the screw neck and above the specified fastening parts with the screw head direction as the upward direction are specified as the parts to be fastened. , A screw fastening state determination program is provided.

According to one aspect of the present invention, it is possible to provide information for confirming the tightened state of the screw.

FIG. 1 is an explanatory diagram showing a system configuration example of the information processing system 100 according to the embodiment. FIG. 2 is an explanatory diagram showing the relationship between the screw and peripheral parts. FIG. 3 is a block diagram showing a hardware configuration example of the information processing device 101. FIG. 4A is an explanatory diagram (No. 1) showing an example of a data structure of assembly data. FIG. 4B is an explanatory diagram (No. 2) showing an example of a data structure of assembly data. FIG. 4C is an explanatory diagram (No. 3) showing an example of a data structure of assembly data. FIG. 5 is a block diagram showing a functional configuration example of the information processing device 101. FIG. 6 is an explanatory diagram showing a specific example of screw list information. FIG. 7 is an explanatory diagram showing an example of a bounding box. FIG. 8 is an explanatory diagram showing an acquisition example of a bitmap image. FIG. 9A is an explanatory diagram (No. 1) showing an operation example of the information processing device 101. FIG. 9B is an explanatory diagram (No. 2) showing an operation example of the information processing device 101. FIG. 9C is an explanatory diagram (No. 3) showing an operation example of the information processing device 101. FIG. 9D is an explanatory diagram (No. 4) showing an operation example of the information processing device 101. FIG. 9E is an explanatory diagram (No. 5) showing an operation example of the information processing device 101. FIG. 9F is an explanatory diagram (No. 6) showing an operation example of the information processing device 101. FIG. 10 is an explanatory diagram showing a specific example of peripheral parts of the screw. FIG. 11A is an explanatory diagram (No. 1) showing an example of calculating the coordinates of the screw neck position. FIG. 11B is an explanatory diagram (No. 2) showing an example of calculating the coordinates of the screw neck position. FIG. 12A is an explanatory diagram showing a first determination example. FIG. 12B is an explanatory diagram showing a specific example of the first determination result. FIG. 13A is an explanatory diagram showing a second determination example. FIG. 13B is an explanatory diagram showing a specific example of the second determination result. FIG. 14A is an explanatory diagram showing a third determination example. FIG. 14B is an explanatory diagram showing a specific example of the third determination result. FIG. 15 is a flowchart showing an example of a procedure for specifying a screw fastening state of the information processing device 101. FIG. 16 is a flowchart showing an example of a specific processing procedure of the specific processing. FIG. 17 is a flowchart showing an example of the screw fastening state determination processing procedure of the information processing device 101. FIG. 18 is a flowchart showing an example of a specific processing procedure of the first determination processing. FIG. 19 is a flowchart showing an example of a specific processing procedure of the second determination processing. FIG. 20 is a flowchart showing an example of a specific processing procedure of the third determination processing.

Hereinafter, embodiments of a screw fastening state determination program, a screw fastening state determination method, and an information processing system according to the present invention will be described in detail with reference to the drawings.

(Embodiment)
First, a system configuration example of the information processing system 100 according to the embodiment will be described. The information processing system 100 is applied to, for example, a computer system that supports a design review in a design process of a manufacturing industry.

FIG. 1 is an explanatory diagram showing a system configuration example of the information processing system 100 according to the embodiment. In FIG. 1, the information processing system 100 includes an information processing device 101 and an information management server 102. In the information processing system 100, the information processing device 101 and the information management server 102 are connected via a wired or wireless network 110. The network 110 is, for example, the Internet, LAN, WAN (Wide Area Network), or the like.

Here, the information processing device 101 is a computer that provides information for confirming the tightened state of the screws in the designed model. The model is a model of the design object, for example, the design object is converted into three-dimensional digital data. The design object is, for example, a product such as a multifunction device, a camera, or a PC. A screw is one of the parts included in the model and is a part for fastening a plurality of parts. The information processing device 101 is, for example, a PC (Personal Computer), a tablet PC, or the like.

The information management server 102 is a computer that has an assembly DB (Data) 120 and stores assembly data of a model. The assembly data is information for displaying a model including a plurality of parts in a three-dimensional space (simulation space). The assembly data includes shape data of each part included in the model.

The shape data of the part is information for displaying the part in the three-dimensional space, and indicates, for example, the polygon data of the part, the arrangement position, the posture, the position of the center of gravity, and the like. In the assembly data, the shape data of a plurality of parts included in the model has a hierarchical structure. That is, it is possible to identify which other part a certain part is composed of.

Assembly data is generated based on, for example, three-dimensional CAD (Computer Aided Design) design data. Specifically, for example, the assembly data is a simplification of CAD data so that each part can be displayed, and does not have to include information for specifying attributes such as a screw cylinder and a loop. An example of the data structure of the assembly data will be described later with reference to FIGS. 4A, 4B and 4C.

Here, in the design review in the design process of the manufacturing industry, the screw fastening state is checked for the model of the designed product. As a check regarding the screw fastening state, for example, there is a check to check whether the types of screws used when attaching one component are unified. In addition, there is a thing to check whether the length of the fastening portion between the screw and the fastening part is equal to or more than the specified value. In addition, there is an interference check between the tool used when tightening the screw and other parts.

When automating such various checks regarding the screw fastening state, for example, it is necessary to search for peripheral parts of the screw, classify the searched peripheral parts, and specify the coordinates of the screw neck position. The classification of peripheral parts is, for example, to classify peripheral parts into fastening parts, fastened parts, other parts, and the like.

The fastening part is a part in which a screw (fastening screw) is threaded, for example, a screw hole part, a female screw, or the like. The part to be fastened is a part that is sandwiched between a screw and a fastening part and fixed. Other parts are different from the fastened parts and the fastened parts. The screw neck position is the position of the screw neck of the screw. For example, the screw neck position of a screw with a pan-shaped screw head is the boundary between the central axis of the screw and the screw head.

Here, the relationship between the screw and the peripheral parts will be described with reference to FIG.

FIG. 2 is an explanatory diagram showing the relationship between the screw and peripheral parts. In FIG. 2, the component 201 is a screw with a pan-shaped screw head. The part 202 is a fastening part in which the thread of the part 201 (screw) is applied. The part 203 is a part to be fastened that is sandwiched and fixed between the part 201 (screw) and the part 202 (fastening part). Point 204 indicates the screw neck position of the component 201 (screw).

For example, as a method of searching for a screw fastening part or a screw to be fastened part, it is conceivable to search for a part included in the screw bounding box. However, this search method may detect parts that are not fastened to the screw by chance above the screw head or below the screw tip. In addition, it is not possible to determine which part has a thread and which part is sandwiched between them.

Further, as a method of specifying the coordinates of the screw neck position, it is conceivable to have the user specify the screw neck position. However, for all types of screws, the user needs to specify the screw neck position in advance. There are hundreds of types of screws, and there is a problem that it takes a lot of time and effort to preset for automation.

Further, it is conceivable to visually check the three-dimensional model displayed on the screen and manually perform various checks regarding the screw fastening state. However, there is a problem that the work time and the work load are increased in order to manually perform various checks by identifying the fastenered parts and the parts to be fastened for each screw included in the product model.

Therefore, in the present embodiment, based on the assembly data of the model to be determined, the fastening part and the fastened part corresponding to the screw in the model are specified, and information to be used for confirming the screw fastening state is provided. A method of determining the fastening state of the screws to be fastened will be described.

(Example of hardware configuration of information processing device 101)
Next, a hardware configuration example of the information processing apparatus 101 will be described with reference to FIG.

FIG. 3 is a block diagram showing a hardware configuration example of the information processing device 101. In FIG. 3, the information processing device 101 includes a CPU (Central Processing Unit) 301, a memory 302, a disk drive 303, a disk 304, a communication I / F (Interface) 305, a display 306, and an input device 307. , A portable recording medium I / F 308, and a portable recording medium 309. Further, each component is connected by a bus 300.

Here, the CPU 301 controls the entire information processing device 101. The CPU 301 may have a plurality of cores. The memory 302 includes, for example, a ROM (Read Only Memory), a RAM (Random Access Memory), a flash ROM, and the like. Specifically, for example, the flash ROM stores the OS (Operating System) program, the ROM stores the application program, and the RAM is used as the work area of the CPU 301. The program stored in the memory 302 is loaded into the CPU 301 to cause the CPU 301 to execute the coded process.

The disk drive 303 controls data read / write to the disk 304 according to the control of the CPU 301. The disk 304 stores the data written under the control of the disk drive 303. Examples of the disk 304 include a magnetic disk and an optical disk.

The communication I / F 305 is connected to the network 110 through a communication line, and is connected to an external computer (for example, the information management server 102 shown in FIG. 1) via the network 110. The communication I / F 305 controls the interface between the network 110 and the inside of the device, and controls the input / output of data from an external computer. For the communication I / F 305, for example, a modem, a LAN adapter, or the like can be adopted.

The display 306 is a display device that displays data such as a cursor, an icon, a toolbox, a document, an image, and functional information. As the display 306, for example, a liquid crystal display, an organic EL (Electroluminescence) display, or the like can be adopted.

The input device 307 has keys for inputting characters, numbers, various instructions, and the like, and inputs data. The input device 307 may be a keyboard, a mouse, or the like, or may be a touch panel type input pad, a numeric keypad, or the like.

The portable recording medium I / F 308 controls data read / write to the portable recording medium 309 according to the control of the CPU 301. The portable recording medium 309 stores the data written under the control of the portable recording medium I / F 308. Examples of the portable recording medium 309 include a CD (Compact Disc) -ROM, a DVD (Digital Versaille Disk), and a USB (Universal Serial Bus) memory.

The information processing device 101 may not have, for example, a disk drive 303, a disk 304, a portable recording medium I / F 308, and a portable recording medium 309 among the above-described components. Further, the information management server 102 shown in FIG. 1 can also be realized by the same hardware configuration as the information processing device 101. However, the information management server 102 may not have, for example, the display 306 and the input device 307 among the above-mentioned components.

(Example of data structure of assembly data)
Next, an example of a data structure of assembly data will be described with reference to FIGS. 4A, 4B, and 4C.

4A, 4B and 4C are explanatory views showing an example of a data structure of assembly data. In FIG. 4A, the assembly data 400 is the assembly data of the model M1. The assembly data 400 includes hierarchically structured shape data (for example, shape data d1-1, d1-2, d2-1) relating to a plurality of parts included in the model M1.

For example, the subassembly 1 included in the model M1 is composed of a component P1-1 and a component P1-2. A subassembly is a collection of multiple parts under its control. The shape data d1-1 is the shape data of the component P1-1. The shape data d1-2 is the shape data of the component P1-2. The "P #" of the part P # is a part number that uniquely identifies the part.

The shape data of each part is information for displaying the part in a three-dimensional space. For example, the part number, part type, name, polygon data, dimension, arrangement position, center of gravity position, and posture (3 × 3) of the part. Matrix), information that identifies the bounding center position, etc. The polygon data is information representing the shape of a component, and is a collection of polygons having three vertex coordinates.

The vertex coordinates, the arrangement position, the position of the center of gravity, and the like may include information on both the local coordinate system and the global coordinate system, for example. The local coordinate system is a coordinate system for each part. The global coordinate system is a coordinate system in model M units.

Further, the assembly data 400 includes assembly order data 410 (see FIG. 4B) and auxiliary data 420 (see FIG. 4C).

In FIG. 4B, the assembly order data 410 shows the order of the parts when assembling the model M1. The assembly order data 410 indicates that the model M1 is created by combining each part in the order of "part A ⇒ part B ⇒ screw 1 ⇒ ...". In addition, "part A", "screw 1" and the like represent the part number of each part.

In FIG. 4C, auxiliary data 420 is a list of screws included in model M1. Auxiliary data 420 includes information that identifies the tool used for the screw, such as the tool name. In addition, "screw 1", "screw 2" and the like represent the part number of each part (screw). Further, the auxiliary data 420 includes a specified value regarding the length of the fastening portion between the screw and the fastening component. The specified value indicates, for example, the length of the fastening portion required to fix the fastenered part by the screw and the fastening part.

(Example of functional configuration of information processing device 101)
FIG. 5 is a block diagram showing a functional configuration example of the information processing device 101. In FIG. 5, the information processing device 101 includes a reception unit 501, an extraction unit 502, a specific unit 503, a determination unit 504, and an output unit 505. Specifically, for example, the reception units 501 to the output unit 505 cause the CPU 301 to execute a program stored in a storage device such as the memory 302, the disk 304, and the portable recording medium 309 shown in FIG. , Communication I / F 305 realizes the function. The processing result of each functional unit is stored in a storage device such as a memory 302 or a disk 304, for example.

The reception unit 501 accepts the input of the assembly data of the model to be determined. Here, the assembly data is information for displaying a model including a plurality of parts in the simulation space, and is, for example, the assembly data 400 shown in FIG. 4A. Specifically, for example, the reception unit 501 receives the input of the assembly data 400 of the model M1 by the operation input of the user using the input device 307 shown in FIG.

Further, the reception unit 501 may accept the input of the assembly data 400 of the model M1 by receiving the assembly data 400 from the information management server 102 shown in FIG. The information management server 102 acquires, for example, the assembly data of the designated model from the assembly DB 120 in response to the designation of the model from the information processing device 101, and transmits the acquired assembly data to the information processing device 101.

In the following description, the model to be determined may be referred to as "model M".

The extraction unit 502 extracts parts included in a predetermined range around the screw in the model M based on the acquired assembly data of the model M. Here, the predetermined range can be arbitrarily set, and is set, for example, in the bounding box of the screw. A screw bounding box is the smallest rectangular border that surrounds a screw.

Specifically, for example, the extraction unit 502 creates screw list information based on the assembly data of the model M. The screw list information indicates the position of the center of gravity and the position of the bounding center of the screw included in the model M. The screw (part number) included in the model M can be specified from, for example, the auxiliary data 420 shown in FIG. 4C.

Here, a specific example of the screw list information will be described with reference to FIG.

FIG. 6 is an explanatory diagram showing a specific example of screw list information. In FIG. 6, the screw list information 600 indicates the position of the center of gravity and the position of the bounding center of each screw included in the model M1 (see FIG. 4A). For example, the center of gravity position of the screw 1 is "0,0,6", and the bounding center position of the screw 1 is "0,0,4".

Next, an example of the bounding box will be described with reference to FIG. 7.

FIG. 7 is an explanatory diagram showing an example of a bounding box. In FIG. 7, the dotted frame 710 shows the bounding box of the screw 700. The point 701 indicates the position of the center of gravity of the screw 700. The point 711 indicates the bounding center position of the screw 700.

Returning to the description of FIG. 5, the extraction unit 502 specifies, for example, a straight line (vector) from the bounding center position to the screw center of gravity position as the screw center axis for each screw with reference to the screw list information 600. .. In the example of FIG. 7, the straight line (vector) from the point 711 to the point 701 is defined as the central axis 720 of the screw 700.

Further, the extraction unit 502 specifies the position side of the center of gravity of the screw as the head direction of the screw. In the example of FIG. 7, the center of gravity position 701 side of the screw 700 is the head direction of the screw 700. Then, based on the assembly data of the model M, the extraction unit 502 rotates the view (viewpoint) around the central axis of the screw with the screw head direction of the central axis of the screw as the upward direction, and models from a plurality of different directions. Acquire each image of M. The image is, for example, a bitmap image. A bitmap image is a representation of an image with a collection of colored dots (pixels). In the following description, a bitmap image will be taken as an example as an image, but other images may be used.

Here, an example of acquiring a bitmap image will be described with reference to FIG.

FIG. 8 is an explanatory diagram showing an acquisition example of a bitmap image. In FIG. 8, in the bitmap images 801 to 804, the model M is viewed from a plurality of different directions by rotating the view (viewpoint) around the central axis 810 of the screw 800 with the screw head direction of the screw 800 as the upward direction. It is a two-dimensional image.

For example, in the case of a part such as the part 820 in which the fastening part corresponding to the screw 800 has an elongated hole, it may appear that the fastening part is not fastened to the screw 800 when viewed from one angle. In the example of FIG. 8, when viewed from the direction of arrow 811, it can be seen that the screw 800 and the component 820 are fastened. On the other hand, when viewed from the direction of arrow 812, it seems that the screw 800 and the component 820 are not fastened.

Therefore, the extraction unit 502, for example, rotates the view by 45 degrees around the central axis 810 of the screw 800, and acquires bitmap images 801 to 804 in which the model M is viewed from a plurality of different directions. Then, the extraction unit 502 extracts the parts included in the bounding box surrounding the screw 800 for each of the acquired bitmap images 801 to 804.

An example of extracting parts will be described later with reference to FIG. 9A.

In the following description, any bitmap image is selected from a plurality of bitmap images acquired by rotating the view (viewpoint) around the central axis of the screw with the screw head direction of the screw in the model M as the upward direction. It may be expressed as "bitmap image bm".

Returning to the description of FIG. 5, among the extracted parts, the specific portion 503 is located below the height of the screw neck of the screw with the screw head direction of the central axis of the screw facing upward, and is the central axis of the screw. A part whose distance from the screw is within a predetermined length according to the screw diameter is specified as a fastening part. Here, the fastening part is a part to which a screw thread is applied, and is, for example, a screw hole part, a female screw, or the like.

The predetermined length according to the screw diameter is, for example, half the length of the screw diameter. The screw diameter corresponds to the thickness of the threaded portion. The height of the screw neck is the lowest height of the portion where the left and right frame lines of the bounding box surrounding the screw and the screw are in contact with each other. The height of the screw neck and the fasteners are specified, for example, in each of the acquired bitmap images bm (eg, bitmap images 801 to 804 shown in FIG. 8).

At this time, the specific portion 503 is, for example, below the height of the screw neck of the screw among the extracted parts in the bitmap image bm corresponding to at least one of a plurality of different directions. In addition, a part whose distance from the central axis of the screw is within a predetermined length according to the screw diameter is specified as a fastening part.

A specific example of the height of the screw neck will be described later with reference to FIG. 9B. Further, a specific example of the fastening parts will be described later with reference to FIG. 9D.

Further, among the extracted parts, the specific portion 503 is a part that is below the height of the screw neck and above the specified fastening part with the screw head direction of the central axis of the screw as the upward direction. Is specified as a part to be fastened. Here, the part to be fastened is a part that is sandwiched and fixed between the screw and the fastening part.

The parts to be fastened are specified, for example, in each of the acquired bitmap images bm (for example, bitmap images 801 to 804). At this time, the specific portion 503 is, for example, below the height of the screw neck among the extracted parts in the bitmap image bm corresponding to at least one of a plurality of different directions, and A part above the specified fastening part is specified as a fastened part.

In the bitmap image bm, when determining the height of each component, the specific portion 503 determines the height by using the portion of the shape of the component that exists within the bounding box range of the screw.

A specific example of the parts to be fastened will be described later with reference to FIG. 9E.

Further, the specifying unit 503 may specify, among the extracted parts, a part different from any of the specified fastening parts and the parts to be fastened as the excluded parts. Here, the excluded parts are parts that are different from the fastenered parts and the parts to be fastened, and are other parts that are not fastened by screws.

A specific example of the excluded parts will be described later with reference to FIG. 9F.

Further, the specific portion 503 is a line connecting the left and right frame lines of the bounding box surrounding the screw and the lowest point of the portion where the screw contacts, with the screw head direction of the central axis of the screw facing upward, and the screw. The intersection with the central axis of the screw neck may be specified as the screw neck position. Here, the screw neck position is the position of the screw neck of the screw, for example, the boundary between the central axis of the screw and the screw head.

When the parts to be fastened are specified, the specific portion 503 is located on the central axis of the screw, and the coordinates of the uppermost part of the parts to be fastened, which is the uppermost of the specified parts to be fastened, are set. , May be specified as the screw neck position.

A specific example of the screw neck position will be described later with reference to FIG. 9C. An example of calculating the coordinates of the screw neck position will be described later with reference to FIGS. 11A and 11B.

When the model M includes a plurality of types of screws, the determination unit 504 determines that the screws for fastening the parts specified as the parts to be fastened among the parts in the model M are based on the parts to be fastened specified for each screw. Determine if the screws are of the same type.

By unifying the types of screws used when attaching one part, it is possible to prevent mistakes in screw attachment, eliminate the need to change tools, and reduce the workload when attaching parts. This determination corresponds to checking whether the types of screws used when mounting one component are unified. Types of screws include, for example, pan head machine screws, countersunk machine screws, truss machine screws, and bind machine screws.

An example of determining whether or not the screws for fastening one component in the model M are the same type of screws will be described later with reference to FIGS. 12A and 12B.

Further, the determination unit 504 determines whether or not the length of the fastening portion where the specified fastening component and the screw are in contact is equal to or greater than a specified value. Here, the specified value indicates the length of the fastening portion required to fix the fastened part by the screw and the fastening part, and is preset by, for example, the type of the screw or the type of the part to be fastened by the screw. Will be done. The specified value corresponding to each screw can be specified from, for example, the auxiliary data 420 included in the assembly data 400.

An example of determining whether or not the length of the fastening portion between the screw and the fastening component is equal to or longer than the specified length will be described later with reference to FIGS. 13A and 13B.

Further, the determination unit 504 determines whether or not the tool interferes with other parts when the tool is arranged at the specified screw neck position based on the assembly order of each part when assembling the model M. Here, the interference with other parts means that, for example, when the tool is placed at the screw neck position on the bitmap image bm, the tool and the other parts overlap. The assembly order of each component can be specified from, for example, the assembly order data 410 included in the assembly data 400.

An example of determining whether or not the tool interferes with other parts when the tool is arranged at the screw neck position will be described later with reference to FIGS. 14A and 14B.

The output unit 505 outputs the determination result determined by the determination unit 504. The output format of the output unit 505 includes, for example, storage in a storage device such as a memory 302 or a disk 304, transmission to another computer by communication I / F 305, display on a display 306, and print output to a printer (not shown). and so on.

Specifically, for example, the output unit 505 determines whether or not the screws for fastening the parts (the parts to be fastened) in the model M are the same type of screws (hereinafter, "first". Is called "judgment result"). A specific example of the first determination result will be described later with reference to FIG. 12B.

Further, the output unit 505 outputs a determination result (hereinafter, referred to as "second determination result") as to whether or not the length of the fastening portion between the screw and the fastening component in the model M is equal to or greater than the specified value. .. A specific example of the second determination result will be described later with reference to FIG. 13B.

Further, the output unit 505 outputs a determination result (hereinafter, referred to as "third determination result") as to whether or not the tool interferes with other parts when the tool is arranged at the screw neck position of the screw in the model M. do. A specific example of the third determination result will be described later with reference to FIG. 14B.

Further, the output unit 505 may output the result specified by the specific unit 503. Specifically, for example, the output unit 505 may output the fastening state specifying result representing the specified fastening component and the fastened component in association with the screw in the model M. Further, the output unit 505 may further output the fastening state specifying result indicating the specified screw neck position in association with the screw in the model M.

More specifically, for example, the fastening state identification result includes information for specifying the identified fastening part, the fastened part, and the screw neck position for each bitmap image bm for each screw in the model M. You may be. Thereby, for example, in another computer different from the information processing device 101, various checks regarding the screw fastening state in the model M can be executed based on the fastening state specifying result output from the information processing device 101. ..

Further, when displaying the model M in the simulation space, the output unit 505 displays the fastening parts and the fastened parts specified for each screw in the model M on the display 306 shown in FIG. 3 so as to be identifiable. You may do it. This makes it easier to identify the fasteners to be fastened and the parts to be fastened to each screw when performing various checks related to the fastened state of the screws while looking at the model M displayed on the screen, and supports the manual check work. be able to.

Further, when the model M is displayed in the simulation space, the output unit 505 may further display the screws in the model M in a form corresponding to the type of the screws. This makes it easier to identify the type of screw when checking whether the screws used when mounting one part are unified while looking at the model M displayed on the screen, and the check work is done manually. Can be assisted.

The functional unit of the information processing device 101 described above may be realized by a plurality of computers (for example, the information processing device 101 and the information management server 102) in the information processing system 100.

(Operation example of information processing device 101)
Next, an operation example of the information processing apparatus 101 will be described with reference to FIGS. 9A to 9F and FIG. Here, as the screw in the model M1 (see FIG. 4A), the screw 900 in the model M1 will be described as an example.

9A to 9F are explanatory views showing an operation example of the information processing device 101. FIG. 10 is an explanatory diagram showing a specific example of peripheral parts of the screw. In FIG. 9A, the bitmap images 910 and 920 view the model M1 from different directions by rotating the view around the central axis of the screw 900 with the screw head direction of the central axis of the screw 900 in the model M1 as the upward direction. The side view is shown.

The information processing apparatus 101 refers to the bitmap image 910 and extracts the parts included in the bounding box 911 of the screw 900. Here, the parts P1 to P6 are extracted. Further, the information processing apparatus 101 refers to the bitmap image 920 and extracts the parts included in the bounding box 921 of the screw 900. Here, the parts P1 and P5 are extracted.

In FIG. 9B, the information processing apparatus 101 refers to the bitmap image 910 and sets the lowest height of the height at which the left and right frame lines of the bounding box 911 and the screw 900 are in contact with the screw neck of the screw 900. Specify as height.

Further, the information processing apparatus 101 refers to the bitmap image 920, and sets the lowest height of the height at which the left and right frame lines of the bounding box 921 and the screw 900 are in contact with each other to be the height of the screw neck of the screw 900. Identify as. When the height of the screw neck differs between the bitmap images, the information processing apparatus 101 specifies, for example, the lowest screw neck height of the screw 900.

In FIG. 9C, the information processing apparatus 101 refers to the bitmap image 910, and refers to the line connecting the left and right frame lines of the bounding box 911 and the bottom point of the portion where the screw 900 contacts, and the screw 900. The intersection 930 with the central axis is specified as the screw neck position. The screw neck position is the same in all bitmap images.

In FIG. 9D, the information processing apparatus 101 is below the height h of the screw neck of the screw 900 among the parts P1 to P6 extracted from the bitmap image 910, and is a distance from the central axis of the screw 900. Identify parts that are within the radius of the screw diameter as fastening parts. However, the screw head direction of the central axis of the screw 900 is upward. Here, the part P5 is specified as a fastening part.

Further, the information processing apparatus 101 is located below the height h of the screw neck of the screw 900 among the parts P1 and P5 extracted from the bitmap image 920, and the distance from the central axis of the screw 900 is the screw. Identify parts within the radius of the diameter as fastening parts. Here, the part P5 is specified as a fastening part.

In FIG. 9E, the information processing apparatus 101 is below the height h of the screw neck of the screw 900 among the parts P1 to P6 (however, the parts P6 are not shown in FIG. 9E) extracted from the bitmap image 910. A part that is above the specified fastening part P5 is specified as a fastening part. Here, the parts P2 to P4 are specified as the parts to be fastened.

In addition, there may be a plurality of parts specified as fastening parts. In this case, the information processing apparatus 101 uses, for example, a part that is below the height of the screw neck and above the bottom fastening part among the specified plurality of fastening parts as the part to be fastened. Identify.

Further, the information processing apparatus 101 is located below the height h of the screw neck of the screw 900 and above the specified fastening component P5 among the parts P1 and P5 extracted from the bitmap image 920. Identify a part as a part to be fastened. Here, the parts to be fastened are not specified.

In FIG. 9F, the information processing apparatus 101 selects parts P1 to P6 extracted from all bitmap images (here, bitmap images 910 and 920), which are different from any of the fastenered parts and the parts to be fastened. , Other parts (excluded parts). Here, parts P1 and P6 are specified as other parts.

As described above, according to the information processing apparatus 101, it is possible to specify the information necessary for performing various checks regarding the fastening state of the screw 900 in the model M1.

Specifically, for example, as shown in FIG. 10, parts P1 to P6 included in the bounding box 911 of the screw 900 are extracted from the bitmap image 910 of the model M1. Then, among the extracted parts P1 to P6, the parts P5 which are below the height h of the screw neck of the screw 900 and whose distance from the central axis of the screw 900 is within the radius of the screw diameter are the fastening parts. Specified as. Further, among the extracted parts P1 to P6, the parts P2 to P4 that are below the height h of the screw neck of the screw 900 and above the specified fastening parts P5 are specified as the parts to be fastened. NS.

(Example of calculation of screw neck position)
An example of calculating the coordinates of the screw neck position will be described with reference to FIGS. 11A and 11B. The coordinates of the screw neck position are used, for example, to check for interference with other parts when the tool is placed at the screw neck position.

11A and 11B are explanatory views showing an example of calculating the coordinates of the screw neck position. Here, the case of calculating the coordinates of the screw neck position of the screw 1100 in the model M will be described as an example.

In FIG. 11A, first, the information processing apparatus 101 calculates the minimum value and the maximum value for each of the XYZ components from the XYZ components (local coordinate system) of the vertices of all the polygons included in the polygon data of the screw 1100. Then, the information processing apparatus 101 sets the bounding box 1110 of the screw 1100 from the calculated minimum and maximum values of the XYZ components.

Next, the information processing apparatus 101 creates a bitmap image 1120 obtained by cutting the bounding box 1110 with a cross section passing through the central axis of the screw 1100. When acquiring the bitmap image 1120, it is set to 0.1 mm per pixel.

Next, the information processing apparatus 101 converts the point 1130 on the bitmap image 1120 into a local coordinate system. Point 1130 indicates the screw neck position of the screw 1100. The position of the point 1130 on the bitmap image 1120 is (Xp, Yp). Note that Xp and Yp are the number of pixels.

The screw neck position (Xnec, Ynex, Znec) in the local coordinate system can be obtained, for example, by using the following equation (1).

In FIG. 11B, the information processing apparatus 101 converts the screw neck position (Xnec, Ynex, Znec) in the local coordinate system into the screw neck position (Xglobal, Yglobal, Zglobal) in the global coordinate system.

The screw neck position (Xglobal, Yglobal, Zglobal) in the global coordinate system can be obtained, for example, by using the following equation (2). However, the 3x3 matrix shows the local coordinate orientation of the screw 1100. (Xlocal, Ylocal, Zlocal) indicates the origin position of the local coordinate system.

Here, the screw neck position (Xnec, Ynex, Znec) in the local coordinate system is set to the following formula (3), and the origin position (Xlocal, Ylocal, Zlocal) in the local coordinate system is set to the following formula (4). Further, the local coordinate orientation of the screw 1100 is set to the following equation (5) (rotated 30 degrees clockwise around the Z axis).

(Xnec, Ynec, Znec) = (5, 5, 5) ... (3)

(Xlocal, Ylocal, Zlocal) = (10,10,10) ... (4)

In this case, the screw neck position (Xglobal, Yglobal, Zglobal) in the global coordinate system is given by the following equation (6).

(Xglobal, Yglobal, Zglobal)
= (16.8, 11.8, 15.0) ... (6)

Thereby, the screw neck position (Xglobal, Yglobal, Zglobal) in the global coordinate system used for checking the interference with other parts when the tool is arranged at the screw neck position of the screw 1100 can be obtained.

(First judgment example)
Next, an example of determining whether or not the screws for fastening one component in the model M are the same type of screws will be described with reference to FIGS. 12A and 12B.

FIG. 12A is an explanatory diagram showing a first determination example. In FIG. 12A, the information processing apparatus 101 creates, for example, a pair of each screw in the model M1 with a part to be fastened corresponding to each screw. At this time, the information processing apparatus 101 creates, for example, a pair of the fastened parts specified for each screw with the fastened parts that are in contact with the screw heads of the screws.

In the example shown in FIG. 9E, a pair of the screw 900 and the fastened component P2 in contact with the screw head of the screw 900 is created. The created pair of the screw and the part to be fastened is registered in the pair table 1200, for example. The pair table 1200 shows a pair of each screw and a part to be fastened for each screw in the model M1.

Next, the information processing apparatus 101 refers to, for example, the pair table 1200, and creates a two-dimensional array 1210 in which the key is the part number of the fastening part and the value is the part number of the screw. Taking the part A as an example, it is shown that the screw 1 and the screw 2 are used to fasten the part A.

Then, the information processing apparatus 101 refers to the two-dimensional array 1210 and determines whether or not the screws that fasten the fastening parts are the same type of screws for each fastening part. Here, in the case of screws of the same type (including the case where only one screw is used), the information processing apparatus 101 determines that the determination is OK.

On the other hand, if the screws are not of the same type, the information processing device 101 makes a determination NG. For example, assume that the screw 1 and the screw 2 corresponding to the component A are different types of screws. In this case, the information processing device 101 determines that the component A is NG. The first determination result is stored in, for example, the first determination result list 1220 as shown in FIG. 12B.

FIG. 12B is an explanatory diagram showing a specific example of the first determination result. In FIG. 12B, the first determination result list 1220 is information including the first determination result indicating whether or not each component is fastened with the same type of screw for each component in the model M1.

According to the first determination result list 1220, for example, it can be seen that the determination is NG for the component A in the model M1 because the component A is fastened with different types of screws 1 and 2. Further, it can be seen that the determination is OK for the component C in the model M1 because the component C is fastened with the same type of screw 5.

(Second judgment example)
Next, an example of determining whether or not the length of the fastening portion between the screw and the fastening component in the model M is equal to or longer than the specified length will be described with reference to FIGS. 13A and 13B.

FIG. 13A is an explanatory diagram showing a second determination example. In FIG. 13A, the information processing apparatus 101 pays attention to the pair of the screw and the fastening component on the bitmap image bm. Taking the bitmap image 910 shown in FIG. 9D as an example, the information processing apparatus 101 pays attention to the pair of the screw 900 and the fastening component P5 on the bitmap image 910. However, in FIG. 13A, a part of the bitmap image 910 is extracted and displayed.

Next, in the bitmap image 910, the information processing apparatus 101 checks the screw 900 and the fastening component P5 in the horizontal direction (for example, left ⇒ right) in order from top to bottom within the range of the bounding box 911 of the screw 900. Count where the pixels with and are continuous.

Here, the number of places where the pixels are continuous from the fastening part P5 to the screw 900 is "299", and the number of places where the pixels are continuous from the screw 900 to the fastening part P5 is "300".

Next, the information processing device 101 changes the number of "fastening parts P5 ⇒ screw 900" to "299" and the number of "screws 900 ⇒ fastening parts P5" "300" to the larger number "300". Based on this, the length of the fastening portion between the screw 900 and the fastening component P5 is calculated.

Here, assuming that one pixel is 0.1 mm, the length of the fastening portion between the screw 900 and the fastening component P5 is “30 mm (= 300 × 0.1 mm)”.

Then, the information processing device 101 determines whether or not the calculated length of the fastening portion is equal to or greater than the specified value corresponding to the screw 900. The specified value corresponding to the screw 900 can be specified, for example, from the auxiliary data 420 shown in FIG. 4C. Here, when the length of the fastening portion is equal to or longer than the specified value, the information processing apparatus 101 determines that the determination is OK.

On the other hand, when the length of the fastening portion is less than the specified value, the information processing apparatus 101 determines that the determination is NG. For example, if the specified value corresponding to the screw 900 is "30 mm", the determination is OK because the length "30 mm" of the fastening portion between the screw 900 and the fastening part P5 is equal to or longer than the specified value. The second determination result is stored in, for example, the second determination result list 1320 as shown in FIG. 13B.

FIG. 13B is an explanatory diagram showing a specific example of the second determination result. In FIG. 13B, the second determination result list 1320 shows, for each screw in the model M1, a second determination result indicating whether or not the length of the fastening portion between each screw and the fastening component is equal to or greater than a specified value. Information to include.

According to the second determination result list 1320, for example, it can be seen that the determination is OK for the screw 1 in the model M1 because the length (measured value) of the fastening portion with the fastening component is equal to or larger than the specified value. Further, it can be seen that the determination is NG for the screw 3 in the model M1 because the length (measured value) of the fastening portion with the fastening part is less than the specified value.

(Third judgment example)
Next, with reference to FIGS. 14A and 14B, an example of determining whether or not the tool interferes with other parts when the tool is arranged at the screw neck position of the screw in the model M will be described.

FIG. 14A is an explanatory diagram showing a third determination example. In FIG. 14A, the information processing apparatus 101 arranges a tool for each screw in the model M in the screw head direction starting from the screw neck position of each screw. Here, it is assumed that the tool 1402 is arranged at the screw neck position 1401 of the screw 1400 in the model M1. The tool 1402 located at the screw neck position 1401 of the screw 1400 can be identified, for example, from the auxiliary data 420 shown in FIG. 4C.

Next, the information processing apparatus 101 refers to the assembly order data 410 shown in FIG. 4B to determine whether or not the other parts whose assembly order is earlier than the screw 1400 interferes with the tool 1402. .. Here, if it does not interfere with other parts, the information processing apparatus 101 determines that the determination is OK. On the other hand, when it interferes with other parts, the information processing apparatus 101 determines that the determination is NG.

Here, the screw 1400 is referred to as a "screw 2", and the other parts whose assembly order is earlier than that of the screw 2 are referred to as a part A, a part B, a screw 1, a part C, and a part D. Further, it is assumed that the component A and the component B interfere with the tool 1402 arranged at the screw neck position 1401 of the screw 2 (screw 1400).

In this case, the information processing device 101 determines that the screw 2 (screw 1400) in the model M1 is NG. The third determination result is stored in, for example, the third determination result list 1420 as shown in FIG. 14B.

FIG. 14B is an explanatory diagram showing a specific example of the third determination result. In FIG. 14B, the third determination result list 1420 shows whether or not each screw in the model M1 interferes with other parts when the tool is arranged at the screw neck position of each screw. Information including.

According to the third determination result list 1420, for example, it can be seen that the determination is OK for the screw 1 in the model M1 because it does not interfere with other parts when the tool is placed at the screw neck position of the screw 1. .. Further, it can be seen that the judgment is NG for the screw 2 in the model M1 because it interferes with the parts A and B when the tool is arranged at the screw neck position of the screw 2.

(Various processing procedures of the information processing device 101)
Next, various processing procedures of the information processing apparatus 101 will be described with reference to FIGS. 15 to 20. First, the procedure for specifying the screw fastening state of the information processing apparatus 101 will be described with reference to FIGS. 15 and 16.

FIG. 15 is a flowchart showing an example of a procedure for specifying a screw fastening state of the information processing device 101. In the flowchart of FIG. 15, first, the information processing apparatus 101 determines whether or not the input of the assembly data of the model M to be determined has been accepted (step S1501).

Here, the information processing apparatus 101 waits for the input of the assembly data of the model M to be accepted (step S1501: No). When the information processing apparatus 101 receives the input of the assembly data of the model M (step S1501: Yes), the information processing apparatus 101 gives each component a unique color to each component in the model M (step S1502).

The coloring of the parts is performed in order to associate the parts on the model M with the parts on the bitmap image bm and to distinguish the parts on the bitmap image bm.

Next, the information processing apparatus 101 refers to the input assembly data (for example, the auxiliary data 420 included in the assembly data 400) and selects an unselected screw among the screws in the model M. (Step S1503).

Then, the information processing apparatus 101 executes a specific process for specifying the tightened state of the selected screw (step S1504). The specific processing procedure of the specific processing will be described later with reference to FIG. Next, the information processing apparatus 101 determines whether or not there is an unselected screw among the screws in the model M (step S1505).

Here, if there is an unselected screw (step S1505: Yes), the information processing apparatus 101 returns to step S1503. On the other hand, when there is no unselected screw (step S1505: No), the information processing apparatus 101 outputs a fastening state specifying result for each screw in the model M (step S1506), and ends a series of processes according to this flowchart. do.

Next, a specific processing procedure of the specific processing of step S1504 shown in FIG. 15 will be described with reference to FIG.

FIG. 16 is a flowchart showing an example of a specific processing procedure of the specific processing. In the flowchart of FIG. 16, first, the information processing apparatus 101 identifies the central axis and the head direction of the selected screw (step S1601). Then, based on the assembly data of the model M, the information processing apparatus 101 rotates the view around the central axis of the screw with the screw head direction of the central axis of the screw as the upward direction, and a bitmap image of a plurality of view angles. Acquire bm (step S1602). At this time, the information processing apparatus 101 fits the view with the size of a screw, for example, and acquires the state of the view as a bitmap image bm.

Next, the information processing apparatus 101 selects an unselected bitmap image bm from the acquired plurality of bitmap images bm (step S1603). Then, the information processing apparatus 101 analyzes the selected bitmap image bm and extracts all the parts included in the bounding box of the screw (step S1604).

Next, the information processing apparatus 101 specifies the lowest height of the portion where the left and right frame lines of the bounding box are in contact with the screw as the screw neck height of the screw (step S1605). Then, the information processing device 101 specifies the intersection of the line connecting the left and right frame lines of the screw bounding box and the lowest point of the portion where the screw contacts and the central axis of the screw as the screw neck position. (Step S1606).

Next, the information processing apparatus 101 determines whether or not there is an unselected bitmap image bm among the acquired plurality of bitmap images bm (step S1607). Here, when there is an unselected bitmap image bm (step S1607: Yes), the information processing apparatus 101 returns to step S1603.

On the other hand, when there is no unselected bitmap image bm (step S1607: No), the information processing apparatus 101 has a screw among the extracted parts in at least one of the plurality of bitmap image bms. A component that is below the height of the screw neck and is within the radius of the screw diameter in the lateral direction from the center axis of the screw is specified as a fastening part with the screw head direction of the central axis of the screw head upward (step S1608).

Next, the information processing apparatus 101 sets the screw head direction of the central axis of the screw as the upward direction in the extracted parts in at least one of the plurality of bitmap image bm, and sets the screw neck height. A part that is below and above the specified fastening part is specified as a part to be fastened (step S1609).

Then, the information processing apparatus 101 identifies a part that is neither a fastening part nor a fastened part among all the extracted parts as other parts (excluded parts) (step S1610), and returns to the step of calling the specific process.

Thereby, for the screw in the model M, it is possible to provide information for specifying the screw fastening state (fastening state specifying result).

Next, the screw fastening state determination processing procedure of the information processing apparatus 101 will be described with reference to FIGS. 17 to 20.

FIG. 17 is a flowchart showing an example of the screw fastening state determination processing procedure of the information processing device 101. In the flowchart of FIG. 17, first, the information processing apparatus 101 acquires the fastening state specifying result for each screw in the model M to be determined (step S1701). The acquired fastening state specifying result is the fastening state specifying result output in step S1506 shown in FIG.

Next, the information processing apparatus 101 executes the first determination process for each screw in the model M based on the acquired fastening state identification result for each screw (step S1702). The specific processing procedure of the first determination processing will be described later with reference to FIG.

Next, the information processing apparatus 101 executes a second determination process for each screw in the model M based on the acquired fastening state identification result for each screw (step S1703). The specific processing procedure of the second determination processing will be described later with reference to FIG.

Next, the information processing apparatus 101 executes a third determination process for each screw in the model M based on the acquired fastening state identification result for each screw (step S1704). The specific processing procedure of the third determination process will be described later with reference to FIG.

Then, the information processing apparatus 101 outputs a judgment result list including the first judgment processing result, the second judgment processing result, and the third judgment processing result for each screw in the model (step S1705). The series of processing by the flowchart is completed.

Here, a specific processing procedure of the first determination process of step S1702 shown in FIG. 17 will be described with reference to FIG.

FIG. 18 is a flowchart showing an example of a specific processing procedure of the first determination processing. In the flowchart of FIG. 18, first, the information processing apparatus 101 creates a pair of each screw in the model M and the part to be fastened based on the acquired fastening state specifying result for each screw (step S1801).

Then, the information processing apparatus 101 refers to the created pair for each screw in the model M, and creates a two-dimensional array in which the key is the part number of the fastening part and the value is the part number of the screw (step). S1802). Next, the information processing apparatus 101 determines, for each fastener in the model M, whether or not the screws that fasten the fasteners are of the same type (step S1803).

Then, the information processing apparatus 101 creates a first determination processing result (step S1804) indicating whether or not each component is fastened with the same type of screw for each component in the model M, and the first Return to the step that called the judgment process.

This makes it possible to check whether each part (part to be fastened) in the model M is fastened with the same type of screw.

Here, a specific processing procedure of the second determination process of step S1703 shown in FIG. 17 will be described with reference to FIG.

FIG. 19 is a flowchart showing an example of a specific processing procedure of the second determination processing. In the flowchart of FIG. 19, first, the information processing apparatus 101 selects an unselected screw among the screws in the model M (step S1901).

Next, the information processing apparatus 101 identifies the screw on the bitmap image bm and the fastening component for the selected screw (step S1902). The bitmap image bm used here is an image in which the fastening component corresponding to the selected screw is specified.

Then, the information processing apparatus 101 checks laterally in the bitmap image bm in the range of the bounding box of the screw in order from top to bottom, and counts the places where the pixels of the screw and the fastening component are continuous. (Step S1903). Next, the information processing apparatus 101 counts the points where the pixels are continuous from the screw to the fastening component (step S1904). Next, the information processing apparatus 101 counts the points where the pixels are continuous from the fastening component to the screw (step S1905).

Then, the information processing apparatus 101 calculates the length of the fastening portion between the screw and the fastening component based on the number having the larger count number (step S1906). Next, the information processing apparatus 101 determines whether or not the calculated length of the fastening portion is equal to or greater than the specified value corresponding to the screw (step S1907).

Next, the information processing apparatus 101 determines whether or not there is an unselected screw among the screws in the model M (step S1908). Here, if there is an unselected screw (step S1908: Yes), the information processing apparatus 101 returns to step S1901.

On the other hand, when there is no unselected screw (step S1908: No), the information processing apparatus 101 determines whether or not the length of the fastening portion between each screw and the fastening component is equal to or longer than the specified value for each screw in the model M. The second determination processing result indicating the above is created (step S1909), and the process returns to the step in which the second determination processing is called.

Thereby, for each screw in the model M, it is possible to check whether the length of the fastening portion between each screw and the fastening component is equal to or larger than the specified value.

Next, with reference to FIG. 20, a specific processing procedure of the third determination process of step S1704 shown in FIG. 17 will be described.

FIG. 20 is a flowchart showing an example of a specific processing procedure of the third determination processing. In the flowchart of FIG. 20, first, the information processing apparatus 101 selects an unselected screw among the screws in the model M (step S2001).

Next, the information processing apparatus 101 arranges the tool in the screw head direction starting from the screw neck position of the selected screw in the simulation space (three-dimensional space) displaying the model M (step S2002). Then, the information processing apparatus 101 refers to the assembly order data of the model M, and determines whether or not the other parts whose assembly order is earlier than the selected screw interfere with the arranged tool (step). S2003).

Next, the information processing apparatus 101 determines whether or not there is an unselected screw among the screws in the model M (step S2004). Here, if there is an unselected screw (step S2004: Yes), the information processing apparatus 101 returns to step S2001.

On the other hand, when there is no unselected screw (step S2004: No), does the information processing device 101 interfere with other parts when the tool is placed at the screw neck position of each screw in the model M? A third determination processing result indicating whether or not is created is created (step S2005), and the process returns to the step in which the third determination process is called.

This makes it possible to check whether each screw in the model M interferes with other parts when the tool is placed at the screw neck position of each screw.

As described above, according to the information processing apparatus 101 according to the embodiment, the parts included in the predetermined range around the screw in the model M are extracted based on the assembly data of the model M to be determined. , Of the extracted parts, with the screw head direction of the central axis of the screw facing upward, it is below the screw neck height of the screw, and the distance from the central axis of the screw is a predetermined length according to the screw diameter of the screw. Parts within are specified as fastening parts, and parts below the screw neck height and above the specified fastening parts can be specified as fastened parts. The predetermined length is, for example, half the length of the screw diameter.

As a result, it is possible to provide information that can identify the fastening part and the fastened part corresponding to the screw as the information used for confirming the fastening state of the screw in the model M.

Further, according to the information processing apparatus 101, among the extracted parts, a part different from any of the specified fastenered parts and the parts to be fastened can be specified as excluded parts.

Thereby, as information for confirming the tightened state of the screw in the model M, it is possible to provide information that can identify other parts (excluded parts) that exist around the screw but are not fastened by the screw.

Further, according to the information processing apparatus 101, the view is rotated around the central axis of the screw with the screw head direction of the central axis of the screw as the upward direction, and bitmap images bm of the model M viewed from a plurality of different directions are displayed. For each acquired bitmap image bm, it is possible to execute a process of extracting peripheral parts, a process of specifying a fastened part, and a process of specifying a fastened part. Further, according to the information processing apparatus 101, in the bitmap image bm corresponding to at least one of a plurality of different directions, among the extracted parts, the extracted parts are below the screw neck height and of the screw. A part whose distance from the central axis is within a predetermined length can be specified as a fastening part.

This makes it possible to identify the fasteners using bitmap images bm of multiple view angles, taking into account that the screws and fasteners may appear to be unfastened depending on which direction they are viewed from. It is possible to prevent specific leakage of fastening parts corresponding to screws.

Further, according to the information processing device 101, the intersection of the line connecting the left and right frame lines of the screw bounding box and the lowest point of the portion where the screw contacts and the central axis of the screw is set at the screw neck position. Can be specified as.

Thereby, as information for confirming the tightened state of the screw in the model M, it is possible to provide information capable of specifying the screw neck position where the tool used for tightening the screw is arranged.

Further, according to the information processing apparatus 101, when a plurality of types of screws are included in the model M, the parts in the model M are specified as the parts to be fastened based on the parts to be fastened specified for each screw in the model M. It is possible to determine whether or not the screws for fastening the parts are of the same type, and output the determined result.

This makes it possible to check whether each part (part to be fastened) in the model M is fastened with the same type of screw.

Further, according to the information processing apparatus 101, it is possible to determine whether or not the length of the fastening portion where the specified fastening component and the screw are in contact is equal to or greater than a specified value, and output the determined result.

Thereby, for each screw in the model M, it is possible to check whether the length of the fastening portion required for fixing the fastened part is secured by each screw and the fastening part.

Further, according to the information processing apparatus 101, based on the assembly order of each component when assembling the model M, it is determined whether or not the tool interferes with other components when the tool is arranged at the specified screw neck position. The judgment result can be output.

This makes it possible to check whether each screw in the model M interferes with other parts when the tool is placed at the screw neck position of each screw.

Based on these facts, the information processing system 100 and the information processing device 101 according to the embodiment provide information for confirming the screw fastening state included in the product, and automate various checks related to the screw fastening state. It becomes possible to do.

For example, check that the types of screws used for one part are unified, that the length of the screw fastening part is longer than the specified value, and that the tool does not interfere with other parts when tightening the screws during assembly. Can be done automatically. This makes it possible to perform various checks related to screws at the stage of shifting from the design process to the production preparation process in the manufacturing industry, improving work efficiency during assembly, and tools that do not assemble parts during assembly. It is possible to prevent rework by suppressing the occurrence of problems such as not being able to enter.

The screw fastening state determination method described in the present embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. The fastening state determination program for this screw is recorded on a computer-readable recording medium such as a hard disk, flexible disk, CD-ROM, DVD, or USB memory, and is executed by being read from the recording medium by the computer. Further, the fastening state determination program of this screw may be distributed via a network such as the Internet.

The following additional notes are further disclosed with respect to the above-described embodiment.

(Appendix 1) Based on the assembly data of the model to be judged, the parts included in the predetermined range around the screw in the model are extracted.
Among the extracted parts, the screw head direction of the central axis of the screw is upward, the height is lower than the height of the screw neck of the screw, and the distance from the central axis of the screw is the screw diameter of the screw. Identify parts that are within the specified length according to the above as fastening parts,
Among the extracted parts, the parts that are below the height of the screw neck and above the specified fastening parts are specified as the parts to be fastened, with the screw head direction as the upward direction.
A screw fastening state determination program characterized by causing a computer to perform processing.

(Appendix 2) Among the extracted parts, a part different from any of the specified fastenered part and the fastened part is specified as an excluded part.
The screw fastening state determination program according to Appendix 1, wherein the computer executes the process.

(Appendix 3) The view is rotated around the central axis of the screw with the screw head direction of the central axis of the screw as the upward direction, and images of the model viewed from a plurality of different directions are acquired.
Fastening of the screw according to Appendix 1 or 2, wherein the computer is made to execute the extraction process, the fastening component identification process, and the fastening component identification process for each of the acquired images. Status judgment program.

(Appendix 4) In the image corresponding to at least one of the plurality of different directions, among the extracted parts, the part is below the height of the screw neck and is from the central axis of the screw. A part whose distance is within the predetermined length is specified as a fastening part.
The screw fastening state determination program according to Appendix 3, wherein the computer executes the process.

(Appendix 5) The extraction process is
Extract the parts contained in the bounding box that surrounds the screw,
With the screw head direction of the central axis of the screw as the upward direction, the lowest height of the portion where the left and right frame lines of the bounding box and the screw are in contact with each other is specified as the height of the screw neck. The screw fastening state determination program according to any one of Supplementary notes 1 to 4, wherein the computer is executed.

(Appendix 6) The intersection of the line connecting the left and right frame lines of the bounding box and the lowest point of the portion where the screw contacts and the central axis of the screw is specified as the position of the screw neck. ,
The screw fastening state determination program according to Appendix 5, wherein the processing is executed by the computer.

(Appendix 7) For each screw in the model, the computer is made to execute the extraction process, the fastening component identification process, and the fastening component identification process.
When the model contains a plurality of types of screws, the screws for fastening the parts specified as the parts to be fastened among the parts in the model are the same type of screws based on the parts to be fastened specified for each screw. Determine if there is,
Output the judgment result,
The screw fastening state determination program according to any one of Supplementary note 1 to 6, wherein the processing is executed by the computer.

(Appendix 8) It is determined whether or not the length of the fastening portion where the specified fastening part and the screw are in contact is equal to or longer than the specified value.
Output the judgment result,
The screw fastening state determination program according to any one of Supplementary note 1 to 7, wherein the processing is executed by the computer.

(Appendix 9) Based on the assembly order of each part when assembling the model, it is determined whether or not the tool interferes with other parts when the tool is placed at the specified screw neck position.
Output the judgment result,
The screw fastening state determination program according to Appendix 6, wherein the processing is executed by the computer.

(Supplementary Note 10) To any one of Supplementary notes 1 to 9, wherein the computer is made to execute a process of outputting information representing the specified fastening part and the fastened part in association with the screw. The described screw fastening state determination program.

(Supplementary Note 11) The screw fastening state determination program according to any one of Supplementary note 1 to 10, wherein the predetermined length is half the length of the screw diameter.

(Appendix 12) Based on the assembly data of the model to be judged, the parts included in the predetermined range around the screw in the model are extracted.
Among the extracted parts, the screw head direction of the central axis of the screw is upward, the height is lower than the height of the screw neck of the screw, and the distance from the central axis of the screw is the screw diameter of the screw. Identify parts that are within the specified length according to the above as fastening parts,
Among the extracted parts, the parts that are below the height of the screw neck and above the specified fastening parts are specified as the parts to be fastened, with the screw head direction as the upward direction.
A method for determining a screw fastening state, which comprises causing a computer to execute a process.

(Appendix 13) An extraction unit that extracts parts included in a predetermined range around a screw in the model based on the assembly data of the model to be determined.
Among the parts extracted by the extraction unit, the part is below the height of the screw neck of the screw with the screw head direction of the central axis of the screw as the upward direction, and the distance from the central axis of the screw is A part within a predetermined length corresponding to the screw diameter of the screw is specified as a fastening part, and among the extracted parts, the part is below the height of the screw neck with the screw head direction as the upward direction and is below the height of the screw neck. , A specific part that specifies a part above the specified fastener as a part to be fastened,
An information processing system characterized by including.

100 Information processing system 101 Information processing device 102 Information management server 110 Network 120 Assembly DB
300 bus 301 CPU
302 Memory 303 Disk drive 304 Disk 305 Communication I / F
306 Display 307 Input device 308 Portable recording medium I / F
309 Portable recording medium 400 Assembly data 410 Assembly order data 420 Auxiliary data 501 Reception unit 502 Extraction unit 503 Specific unit 504 Judgment unit 505 Output unit 600 Screw list information 700, 800, 900, 1100, 1400 Screw 710 Dotted line frame 720, 810 Central axis 801,802,803,804,910,920,1120 Bitmap image 911,921,1110 Bounding box 1220,1320,1420 Judgment result list 1401 Screw neck position 1402 Tool

Claims (10)

Based on the assembly data of the model to be judged, the parts included in the predetermined range around the screw in the model are extracted.
Among the extracted parts, the screw head direction of the central axis of the screw is upward, the height is lower than the height of the screw neck of the screw, and the distance from the central axis of the screw is the screw diameter of the screw. Identify parts that are within the specified length according to the above as fastening parts,
Among the extracted parts, the parts that are below the height of the screw neck and above the specified fastening parts are specified as the parts to be fastened, with the screw head direction as the upward direction.
A screw fastening state determination program characterized by causing a computer to perform processing. Among the extracted parts, a part different from any of the specified fastener parts and the parts to be fastened is specified as an excluded part.
The screw fastening state determination program according to claim 1, wherein the computer executes the process. The view is rotated around the central axis of the screw with the screw head direction of the central axis of the screw as the upward direction, and images of the model viewed from a plurality of different directions are acquired.
The screw according to claim 1 or 2, wherein the computer is made to execute the extraction process, the fastening component identification process, and the fastening component identification process for each of the acquired images. Fastening state judgment program. In the image corresponding to at least one of the plurality of different directions, among the extracted parts, the part is below the height of the screw neck and the distance from the central axis of the screw is the predetermined value. Identify parts within the length as fastening parts,
The screw fastening state determination program according to claim 3, wherein the computer executes the process. The extraction process is
Extract the parts contained in the bounding box that surrounds the screw,
With the screw head direction of the central axis of the screw as the upward direction, the lowest height of the portion where the left and right frame lines of the bounding box and the screw are in contact with each other is specified as the height of the screw neck. The screw fastening state determination program according to any one of claims 1 to 4, wherein the computer is executed. The intersection of the line connecting the left and right frame lines of the bounding box with the bottom point of the portion where the screw contacts and the central axis of the screw is specified as the position of the screw neck.
The screw fastening state determination program according to claim 5, wherein the processing is executed by the computer. For each screw in the model, the computer is made to execute the extraction process, the fastening component identification process, and the fastening component identification process.
When the model contains a plurality of types of screws, the screws for fastening the parts specified as the parts to be fastened among the parts in the model are the same type of screws based on the parts to be fastened specified for each screw. Determine if there is,
Output the judgment result,
The screw fastening state determination program according to any one of claims 1 to 6, wherein the computer executes the process. It is determined whether or not the length of the fastening portion where the specified fastening part and the screw are in contact is equal to or greater than the specified value.
Output the judgment result,
The screw fastening state determination program according to any one of claims 1 to 7, wherein the computer executes the process. Based on the assembly data of the model to be judged, the parts included in the predetermined range around the screw in the model are extracted.
Among the extracted parts, the screw head direction of the central axis of the screw is upward, the height is lower than the height of the screw neck of the screw, and the distance from the central axis of the screw is the screw diameter of the screw. Identify parts that are within the specified length according to the above as fastening parts,
Among the extracted parts, the parts that are below the height of the screw neck and above the specified fastening parts are specified as the parts to be fastened, with the screw head direction as the upward direction.
A method for determining a screw fastening state, which comprises causing a computer to execute a process. An extraction unit that extracts parts included in a predetermined range around a screw in the model based on the assembly data of the model to be determined, and an extraction unit.
Among the parts extracted by the extraction unit, the part is below the height of the screw neck of the screw with the screw head direction of the central axis of the screw as the upward direction, and the distance from the central axis of the screw is A part within a predetermined length corresponding to the screw diameter of the screw is specified as a fastening part, and among the extracted parts, the part is below the height of the screw neck with the screw head direction as the upward direction and is below the height of the screw neck. , A specific part that specifies a part above the specified fastener as a part to be fastened,
An information processing system characterized by including.

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