JP6009642B1 - Method for inspecting assemblies and method for producing joined bodies - Google Patents

Abstract

A method for appropriately determining whether or not an annular joint material is in an allowable position in an assembly including the annular joint material. The assembly is photographed from a direction parallel to the flange surface of the assembly. In the image, when the axial distance from the axial position of the edge 1341 corresponding to the bonded surface of the annular workpiece to the axial position of the edge 1342 corresponding to the main surface of the annular bonding material is larger than the threshold value It is determined that the bonding material is in an allowable position. When the axial direction size of the area 1360 corresponding to the annular bonding material is larger than the threshold value, it may be determined that the annular bonding material is in an allowable position. When the density of the area corresponding to the main surface of the annular bonding material satisfies the condition, it may be determined that the annular bonding material is in an allowable position. [Selection] Figure 10

Description

  The present invention relates to an inspection of an assembly prepared when producing a joined body.

  When an annular workpiece is joined to a flange-like structure by heating and pressing via an annular joining material, an assembly including the annular joining material is prepared, and the assembly is prepared using the prepared assembly. Is produced.

  However, the annular bonding material is a thin member and is difficult to handle. For this reason, an inferior product of an assembled product that does not have a position where the annular bonding material is allowed may occur. Therefore, it is desired to appropriately determine whether or not the annular bonding material is in an allowable position in an assembly including the annular bonding material.

  Patent document 1 discloses the technique regarding the test | inspection of the application state of an adhesive agent.

JP 2010-256025 A

  The invention described in the detailed description is made to solve this problem. The problem to be solved by the invention described in the detailed description is to appropriately determine whether or not an annular bonding material is in an allowable position in an assembly including the annular bonding material.

(1) 1st aspect of this invention In the 1st aspect of this invention, an assembly is provided with a to-be-joined object, a cyclic | annular to-be-joined object, and a cyclic | annular joining material.

  A to-be-joined object is provided with the structure of a cylindrical shape or a rod shape, and an outer flange shape. A cylindrical or rod-like structure extends in the axial direction. The outer flange-shaped structure extends radially outward from the cylindrical or rod-shaped structure. A cylindrical or rod-shaped structure is passed through an annular workpiece and an annular bonding material.

  One main surface of the annular bonding material faces the flange surface of the outer flange-like structure. The other main surface of the annular bonding material faces the bonded surface of the annular bonded object.

  In the first aspect of the present invention, the assembly is inspected by the following steps.

  (a) The assembly is photographed and an image is obtained. Photographing is performed from a direction parallel to the flange surface of the outer flange-like structure. The image includes a first edge corresponding to the flange outer peripheral surface of the outer flange-like structure and a second edge corresponding to the bonded surface of the annular bonded object. The image further includes a third edge corresponding to one major surface of the annular bonding material when the annular bonding material is in an allowable position.

  (b) The first inspection frame including the first edge is set in the image.

  (c) The radial position of the first edge is detected in the first inspection frame.

  (d) A second inspection frame including the second edge is set in the image. The relative position of the second inspection frame with respect to the position of the first edge in the first inspection frame is fixed.

  (e) The axial position of the second edge is detected in the second inspection frame.

  (f) A third inspection frame including the third edge is set in the image. The relative position of the third inspection frame with respect to the position of the first edge in the first inspection frame is fixed. The third inspection frame may be replaced with two or more third inspection frames.

  (g) The axial position of the third edge is detected in the third inspection frame.

  (h) When the axial distance from the axial position of the second edge to the axial position of the third edge is larger than the threshold value, it is determined that the annular bonding material is in an allowable position.

(2) 2nd aspect of this invention In the 2nd aspect of this invention, an assembly is provided with a to-be-joined object and a cyclic | annular joining material.

  A to-be-joined object is provided with the structure of a cylindrical shape or a rod shape, and an outer flange shape. A cylindrical or rod-like structure extends in the axial direction. The outer flange-shaped structure extends radially outward from the cylindrical or rod-shaped structure. The cylindrical or rod-shaped structure is passed through an annular bonding material.

  The main surface of the annular bonding material faces the flange surface of the outer flange-like structure.

  In the second aspect of the present invention, the assembly is inspected by the following steps.

  (a) The assembly is photographed and an image is obtained. Photographing is performed from a direction parallel to the flange surface of the outer flange-like structure. The image includes a first edge corresponding to the outer peripheral surface of the flange having an outer flange-like structure. The image further includes an area corresponding to the annular bonding material when the annular bonding material is in an allowable position.

  (b) A first inspection frame including an edge is set in the image.

  (c) The radial position of the edge is detected in the first inspection frame.

  (d) A second inspection frame including an area is set in the image. The relative position of the second inspection frame with respect to the position of the edge in the first inspection frame is fixed. The second inspection frame may be replaced with two or more second inspection frames.

  (e) The axial size of the area is detected in the second inspection frame.

  (f) When the axial size of the area is larger than the threshold value, it is determined that the annular bonding material is in an allowable position.

  (1) According to the first aspect of the present invention, whether or not the annular bonding material is allowed based on the axial distance reflecting whether or not the annular bonding material is allowed. Is determined. It is appropriately determined whether or not the annular bonding material is in an allowable position.

  (2) According to the second aspect of the present invention, is the annular bonding material at a position where the annular bonding material is permitted based on the axial size that reflects whether the annular bonding material is at a permitted position? It is determined whether or not. It is appropriately determined whether or not the annular bonding material is in an allowable position.

  These and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the invention when considered in conjunction with the drawings.

It is a disassembled perspective view which shows the conjugate | zygote of 1st Embodiment. It is sectional drawing which shows the conjugate | zygote of 1st Embodiment. It is sectional drawing which shows the junction structure in the conjugate | zygote of 1st Embodiment. It is a flowchart which shows the method of producing the conjugate | zygote of 1st Embodiment. It is sectional drawing which shows the assembly goods of 1st Embodiment. It is sectional drawing which shows the inferior goods of the assembly goods of 1st Embodiment. It is sectional drawing which shows the inferior goods of the assembly goods of 1st Embodiment. It is a schematic diagram which shows the apparatus which test | inspects the assembly of 1st Embodiment and the assembly of 1st Embodiment. It is a flowchart which shows the method to test | inspect the assembly of 1st Embodiment. It is a schematic diagram which shows the image used in the method to test | inspect the assembly of 1st Embodiment. It is a disassembled perspective view which shows the conjugate | zygote of 2nd Embodiment. It is sectional drawing which shows the conjugate | zygote of 2nd Embodiment. It is sectional drawing which shows the junction structure in the conjugate | zygote of 2nd Embodiment. It is a flowchart which shows the method to produce the conjugate | zygote of 2nd Embodiment. It is sectional drawing which shows the assembly goods of 2nd Embodiment. It is sectional drawing which shows the inferior goods of the assembly goods of 2nd Embodiment. It is sectional drawing which shows the inferior goods of the assembly goods of 2nd Embodiment. It is a schematic diagram which shows the apparatus which test | inspects the assembly of 2nd Embodiment and the assembly of 2nd Embodiment. It is a flowchart which shows the method to test | inspect the assembly of 2nd Embodiment. It is a schematic diagram which shows the image used in the method to test | inspect the assembly of 2nd Embodiment.

1 First Embodiment 1.1 Bonded Body The schematic diagrams of FIGS. 1 and 2 show the bonded body of the first embodiment. FIG. 1 is an exploded perspective view. FIG. 2 is a cross-sectional view. The schematic diagram of FIG. 3 shows the joining structure in the joined body of the first embodiment. FIG. 3 is a cross-sectional view.

  The joined body 1000 of the first embodiment includes an object to be joined 1020, an annular joining material 1021, an annular joined object 1022, and an annular joining material 1023, as shown in FIGS. And an annular workpiece 1024. The article to be joined 1020 includes a cylindrical structure 1040, a cylindrical structure 1041, and an outer flange-shaped structure 1042.

  The joined body 1000 has a structure in which an object to be joined 1020 that is a conductor is insulated by an annular article to be joined 1022 and an annular article to be joined 1024, and is a device that has a high temperature such as an electric furnace. It is used for electrical wiring inside.

  One of the annular workpiece 1022 and the annular workpiece 1024 may be omitted. In the case where the annular workpiece 1022 is omitted, the annular bonding material 1021 is omitted. In the case where the annular workpiece 1024 is omitted, the annular bonding material 1023 is omitted.

  Cylindrical structures 1040 and 1041 extend in the axial direction 1060. Outer flange-like structure 1042 extends radially outward from cylindrical structures 1040 and 1041.

  The cylindrical structure 1040 is passed through the through hole 1080 formed in the annular bonding material 1021 and is passed through the through hole 1100 formed in the annular workpiece 1022. It is coaxially arranged with the annular workpiece 1022. The annular workpiece 1022 is joined to the outer flange-like structure 1042 via the annular joining material 1021.

  The cylindrical structure 1041 is passed through a through hole 1120 formed in an annular bonding material 1023 and is passed through a through hole 1140 formed in an annular workpiece 1024. It is coaxially arranged with the annular workpiece 1024. The to-be-joined object 1024 having an annular shape is joined to the outer flange-like structure 1042 through an annular joining material 1023.

  The cylindrical structure 1040 may be replaced with a non-cylindrical cylindrical structure, a round bar structure, or a non-round bar structure. The cylindrical structure 1041 may be replaced with a non-cylindrical cylindrical structure, a round bar-shaped structure, or a non-round bar-shaped structure. The annular bonding material 1021 may be replaced with a non-circular bonding material. The annular workpiece 1022 may be replaced with an annular workpiece that is not annular. The annular bonding material 1023 may be replaced with a non-circular bonding material. The to-be-joined object 1024 having an annular shape may be replaced with an annular to-be-joined object.

  The object to be bonded 1020 is made of a metal or an alloy, and preferably made of an aluminum alloy. Each of the annular bonding materials 1021 and 1023 is made of an aluminum brazing material. Each of the annular workpieces 1022 and 1024 is made of ceramics.

1.2 Method for Producing Joined Body The flowchart of FIG. 4 shows a method for producing the joined body according to the first embodiment. The schematic diagram of FIG. 5 shows the assembly product of 1st Embodiment. FIG. 5 is a cross-sectional view. Each of the schematic diagrams of FIGS. 6 and 7 shows a defective product of the assembled product of the first embodiment. Each of FIGS. 6 and 7 is a cross-sectional view.

  (1) When the joined body 1000 is produced, an assembly is prepared in step S1 as shown in FIG.

  As shown in FIG. 5, the prepared assembly 1160 includes a workpiece 1020, an annular bonding material 1021, an annular workpiece 1022, and an annular bonding material 1023.

  The cylindrical structure 1040 is passed through the through-hole 1080 formed in the annular bonding material 1021 and through the through-hole 1100 formed in the annular workpiece 1022. The annular bonding material 1021 is placed above the outer flange-like structure 1042 in the vertical direction. The annular workpiece 1022 is placed above the annular bonding material 1021 in the vertical direction. Thereby, the main surface 1200 (see FIG. 3) of the annular bonding material 1021 faces the flange surface 1180 (see FIG. 3) of the outer flange-shaped structure 1042, and the main surface 1201 (see FIG. 3) of the annular bonding material 1021. 3) faces the surface to be joined 1220 (see FIG. 3) of the annular workpiece 1022, and the annular workpiece 1022 is heated to the outer flange-like structure 1042 through the annular bonding material 1021. And it will be in the state which can be joined by press.

  The cylindrical structure 1041 is passed through a through hole 1120 formed in an annular bonding material 1023. The annular bonding material 1023 is temporarily fixed to the cylindrical structure 1041 by a locking claw or the like, and does not fall off from the object to be bonded 1020. Thereby, the main surface 1240 (see FIG. 3) of the annular bonding material 1023 faces the flange surface 1181 (see FIG. 3) of the outer flange-like structure 1042.

  The annular object 1024 is not included in the assembly 1160 because it is somewhat difficult to temporarily fix it to the cylindrical structure 1041. However, an annular object to be bonded 1024 may be included in the assembly 1160.

  (2) Subsequently, in step S2, the prepared assembly 1160 is inspected. When the assembly 1160 is inspected, it is inspected whether or not the annular bonding material 1021 is in an allowable position and whether or not the annular bonding material 1023 is in an allowable position. . As a result, the defective product of the assembled product without the annular bonding material 1023 shown in FIG. 6, the defective product of the assembled product in which the annular bonding material 1023 shown in FIG. Thus, it is possible to take measures to prevent the bonded body 1000 from being defective. In some cases, it is inspected only whether or not the annular bonding material 1021 is in an allowable position. In some cases, it is inspected only whether or not the annular bonding material 1023 is in an allowable position.

  (3) Subsequently, in step S3, an annular workpiece 1024 is prepared. Step S3 may be performed before steps S1 and S2, or may be performed simultaneously with steps S1 and S2.

  (4) After steps S2 and S3, in step S4, the cylindrical structure 1041 is passed through the annular object 1024. As a result, the main surface 1241 (see FIG. 3) of the annular bonding material 1023 faces the bonded surface 1260 (see FIG. 3) of the annular object 1024, and the circular surface through the annular bonding material 1023. The annular workpiece 1024 can be joined to the outer flange-like structure 1042 by heating and pressing.

  (5) Subsequently, in a state where the assembly 1160 and the annular workpiece 1024 are heated, the annular workpiece 1022 is pressed downward in the vertical direction, and the annular workpiece 1024 is vertical. It is pressed toward the upper direction. As a result, the annular bonding material 1021 is pressed between the annular object 1022 and the outer flange-shaped structure 1042, and the annular bonding material 1023 becomes the annular object 1024 and the outer flange-shaped structure. 1042, the annular workpiece 1022 is joined to the outer flange-like structure 1042 via the annular joint material 1021, and the annular workpiece 1024 is joined via the annular joint material 1023. Are joined to the outer flange-like structure 1042 to complete the joined body 1000.

1.3 Apparatus for inspecting an assembly The schematic diagram of FIG. 8 shows an apparatus for inspecting an assembly according to the first embodiment and an assembly according to the first embodiment.

  An apparatus 1280 for inspecting an assembly according to the first embodiment includes an illumination 1300, a camera 1301, and an image processing apparatus 1302, as shown in FIG. The camera 1301 and the image processing device 1302 may be integrated.

  When the assembly 1160 is inspected, the assembly 1160 is illuminated from behind by the illumination 1300, and the assembly 1160 is photographed by the camera 1301 from the front. A photographed image obtained by photographing is sent to the image processing device 1302. The image processing apparatus 1302 processes the sent captured image, determines whether or not the annular bonding material 1021 is in an allowable position, and determines whether or not the annular bonding material 1023 is in an allowable position. Determine whether or not. According to the arrangement of the illumination 1300, the camera 1301, and the assembly 1160, a silhouette of the assembly 1160 with high contrast suitable for detection of an edge, an area, and the like can be obtained. However, the arrangement of the illumination 1300, the camera 1301, and the assembly 1160 can be changed. It is allowed to change. The illumination 1130 may be omitted, and the assembly 1160 may be illuminated with natural light.

1.4 Method for Inspecting Assembly Product The flowchart of FIG. 9 shows a method for inspecting the assembly product of the first embodiment.

  Step S11 in FIG. 9 is executed by the illumination 1300 and the camera 1301. Steps S12 to S21 in FIG. 9 are executed by the image processing apparatus 1302.

  (1) When the assembly 1160 is inspected, as shown in FIG. 9, the assembly 1160 is photographed in step S11. Photographing is performed with the flange surface 1180 of the outer flange-shaped structure 1042 facing upward in the vertical direction and the flange surface 1181 of the outer flange-shaped structure 1042 facing downward in the vertical direction, and is parallel to the flange surface 1180 and the flange surface 1181. It is done from the direction to make. As a result, a photographed image including side images of the annular bonding material 1021, the annular bonded object 1022, the annular bonding material 1023, the annular bonded object 1024, and the outer flange-shaped structure 1042 is obtained.

  The schematic diagram of FIG. 10 shows an image used in the method for inspecting an assembly according to the first embodiment.

  The image 1320 used in the method of inspecting the assembly of the first embodiment includes an edge 1340 and an annular shape corresponding to the flange outer peripheral surface 1182 (see FIG. 3) of the outer flange-like structure 1042, as shown in FIG. The edge 1341 corresponding to the to-be-joined surface 1220 (refer FIG. 3) of the to-be-joined object 1022 is provided. The image 1320 further includes an edge 1342 corresponding to the main surface 1200 (see FIG. 3) of the annular bonding material 1021 when the annular bonding material 1021 is in an allowable position, and the annular bonding material It further includes an area 1360 corresponding to the annular bonding material 1023 when 1023 is in an allowable position. If the annular bonding material 1021 is not in an allowable position, the image 1320 may not include the edge 1342. If the annular bonding material 1023 is not in an allowable position, the image 1320 may not include the area 1360.

  The image 1320 may be the entire captured image or a part of the captured image. When the image 1320 is the entire captured image, the inspection range is adjusted by adjusting the position of the camera 1301 or the assembly 1160. When the image 1320 is a part of the captured image, the camera 1301 or the assembly 1160 is adjusted. The inspection range may be adjusted by adjusting the position, and the inspection range may be adjusted by adjusting the position where the image 1320 is cut out from the captured image.

  In the following description, an xy coordinate system in which the radial direction is the x-axis direction and the axial direction is the y-axis direction is defined in the image 1320, the radial position is represented by the coordinate value of the x coordinate, and the axial position is the y coordinate. It is expressed by the coordinate value.

  (2) Subsequently, in step S12, an inspection frame 1380 for detecting the radial position x1 of the edge 1340 is set in the image 1320. Inspection frame 1380 includes an edge 1340.

  (3) Subsequently, in step S13, the radial position x1 of the edge 1340 is detected in the inspection frame 1380. The edge 1340 is detected by a light / dark difference. By detecting the radial position x1 of the edge 1340 in the inspection frame 1380, the position of the assembly 1160 is specified, and the position where the annular bonding material 1021 should be and the annular object 1022 should be present. A location is identified. This makes it possible to set the inspection frame 1381 for detecting the axial position y2 of the edge 1341, and to set the inspection frames 1382, 1383 and 1384 for detecting the axial position y3 of the edge 1342. Enable.

  (4) Subsequently, in step S14, an inspection frame 1381 for detecting the axial position y2 of the edge 1341 is set in the image 1320. The relative position of the inspection frame 1381 with respect to the position (x1, y1) of the edge 1340 in the inspection frame 1380 is fixed, and the inspection frame 1381 includes an edge 1341.

  (5) Subsequently, in step S15, the axial position y2 of the edge 1341 is detected in the inspection frame 1381. The edge 1341 is detected by a light / dark difference.

  (6) Subsequently, in step S16, inspection frames 1382, 1383 and 1384 for detecting the axial position y3 of the edge 1342 are set in the image 1320. Inspection frames 1382, 1383 and 1384 are arranged in the radial direction. The relative positions of the inspection frames 1382, 1383 and 1384 with respect to the position (x1, y1) of the edge 1340 in the inspection frame 1380 are fixed. All or part of the inspection frames 1382, 1383, and 1384 include an edge 1342. Instead of the inspection frames 1382, 1383 and 1384, two or less inspection frames or four or more inspection frames may be set. When two or more inspection frames are set, the edge 1342 is formed of two or more inspection frames even though the annular bonding material 1021 is at a position where the annular bonding material 1021 is allowed due to bending of the annular bonding material 1021 or the like. It is hard to happen that it is not included in any of them, and the certainty of inspection is improved. However, if the certainty of inspection is allowed to be slightly reduced, one inspection frame may be set instead of the inspection frames 1382, 1383, and 1384.

  (7) Subsequently, in step S17, the axial position y3 of the edge 1342 is detected in each of the inspection frames 1382, 1383 and 1384. The edge 1342 is detected by a light / dark difference.

  Steps S16 and S17 may be performed before steps S14 and S15, or may be performed simultaneously with steps S14 and S15.

  (8) Subsequently, in step S18, the axial distance | y3-y2 | from the axial position y2 of the edge 1341 to the axial position y3 of the edge 1342 is greater than the threshold in any of the inspection frames 1382, 1383 and 1384. In this case, it is determined that the annular bonding material 1021 is in an allowable position. This determination condition is that when the annular bonding material 1021 is in an allowable position, the edge 1342 is separated from the edge 1341 in the axial direction by a distance corresponding to the axial size (thickness) of the annular bonding material 1021. Reflect that.

  (9) Subsequently, in step S19, inspection frames 1385, 1386, and 1387 for detecting the axial size Δy of the area 1360 are set in the image 1320. Inspection frames 1385, 1386 and 1387 are arranged in the radial direction. The relative positions of the inspection frames 1385, 1386 and 1387 with respect to the position (x1, y1) of the edge 1340 in the inspection frame 1380 are fixed. All or part of the inspection frames 1385, 1386, and 1387 include an area 1360. Instead of the inspection frames 1385, 1386, and 1387, two or less inspection frames or four or more inspection frames may be set. When two or more inspection frames are set, the area 1360 has two or more inspection frames even though the annular bonding material 1023 is at a position where the annular bonding material 1023 is allowed to be bent due to the bending of the annular bonding material 1023 or the like. It is hard to happen that it is not included in any of them, and the certainty of inspection is improved. However, if it is allowed that the reliability of the inspection is slightly lowered, one inspection frame may be set instead of the inspection frames 1385, 1386, and 1387.

  (10) Subsequently, in step S20, the axial size Δy of the area 1360 is detected in each of the inspection frames 1385, 1386, and 1387. Area 1360 is detected by a light / dark difference.

  (11) Subsequently, in step S21, if any of the inspection frames 1385, 1386, and 1387 has an axial size Δy that is greater than the threshold value, it is determined that the annular bonding material 1023 is in an allowable position. The determination condition is that, when the annular bonding material 1023 is in an allowable position, an area 1360 having an axial size Δy that is equal to or larger than the axial size (thickness) of the annular bonding material 1023 exists. Reflect. When inspecting whether or not the annular bonding material 1023 is in an allowable position, it is different from inspecting whether or not the annular bonding material 1021 is in an allowable position. Since there is no reference such as the object 1022 near the annular bonding material 1023, the determination is made based on the axial size Δy of the annular bonding material 1023 itself.

  Steps S19 to S21 may be performed before steps S14 to S18, or may be performed simultaneously with steps S14 to S18.

  According to the method for inspecting an assembly according to the first embodiment, an annular bonding material is based on the axial distance | y3-y2 | that reflects whether or not the annular bonding material 1021 is in an allowable position. It is determined whether 1021 is in an allowable position. For this reason, it is appropriately determined whether or not the annular bonding material 1021 is in an allowable position. Further, it is determined whether or not the annular bonding material 1023 is at an allowable position based on the axial size Δy that reflects whether or not the annular bonding material 1023 is at an allowable position. For this reason, it is appropriately determined whether or not the annular bonding material 1023 is in an allowable position.

2 Second Embodiment 2.1 Joined Body In the joined body of the first embodiment, an annular object to be joined is joined to an outer flange-like structure. On the other hand, in the joined body of the second embodiment, the annular object to be joined is joined to the inner flange-like structure.

  Each of FIGS. 11 and 12 shows a joined body of the second embodiment. FIG. 11 is an exploded perspective view. FIG. 12 is a cross-sectional view. The schematic diagram of FIG. 13 shows the joining structure in the joined body of 2nd Embodiment. FIG. 13 is a cross-sectional view.

  As shown in FIGS. 11, 12 and 13, the joined body 2000 of the second embodiment includes an article to be joined 2020, an annular joining material 2021, and an annular article to be joined 2022. The article to be bonded 2020 includes a cylindrical structure 2040 and an inner flange-shaped structure 2041.

  The cylindrical structure 2040 extends in the axial direction 2060. The inner flange-shaped structure 2041 extends from the cylindrical structure 2040 to the inside in the radial direction 2061.

  The cylindrical structure 2040 accommodates an annular bonding material 2021 and an annular workpiece 2022, and is arranged coaxially with the annular bonding material 2021 and the annular workpiece 2022. An annular workpiece 2022 is joined to the inner flange-like structure 2041 via an annular joining material 2021.

  The cylindrical structure 2040 may be replaced with a cylindrical structure that is not cylindrical. The annular bonding material 2021 may be replaced with an annular bonding material that is not annular. The to-be-joined object 2022 having an annular shape may be replaced with an annular to-be-joined object.

  The article to be bonded 2020 is made of a metal or an alloy, and is preferably made of an aluminum alloy. The annular bonding material 2021 is made of an aluminum brazing material. The annular workpiece 2022 is made of ceramics.

2.2 Method for Producing Bonded Body The flowchart of FIG. 14 shows a method for producing the bonded body according to the second embodiment. The schematic diagram of FIG. 15 shows the assembly product of 2nd Embodiment. FIG. 15 is a cross-sectional view. Each of the schematic views of FIGS. 16 and 17 shows a defective product of the assembled product of the second embodiment. Each of FIGS. 16 and 17 is a cross-sectional view.

  (1) When the joined body 2000 is produced, an assembly is prepared in step S31 as shown in FIG.

  As shown in FIG. 15, the prepared assembly 2080 includes a workpiece 2020 and an annular bonding material 2021.

  The cylindrical structure 2040 accommodates an annular bonding material 2021. The annular bonding material 2021 is placed above the inner flange-like structure 2041 in the vertical direction. Thereby, the main surface 2100 (see FIG. 13) of the annular bonding material 2021 faces the flange surface 2120 (see FIG. 13) of the inner flange-like structure 2041.

  (2) Subsequently, in step S32, the prepared assembly 2080 is inspected. When the assembly 2080 is inspected, it is inspected whether or not the annular bonding material 2021 is in an allowable position. As a result, a defective assembly product that does not include the annular bonding material 2021 shown in FIG. 16, or an assembly in which the annular bonding material 2021 shown in FIG. 17 is displaced from the flange surface 2120 of the inner flange-like structure 2041. Defective products and the like are discovered, and measures to prevent the bonded body 2000 from being defective become possible.

  (3) Subsequently, in step S33, an annular workpiece 2022 is prepared. Process S33 may be performed before process S31 and S32, and may be performed simultaneously with process S31 and S32.

  (4) After steps S32 and S33, in step S34, the annular object 2022 is accommodated in the cylindrical structure 2040. As a result, the main surface 2101 (see FIG. 13) of the annular bonding material 2021 faces the bonded surface 2140 (see FIG. 13) of the annular object 2022, and the circle is formed via the annular bonding material 2021. The annular workpiece 2022 can be joined to the inner flange-like structure 2041 by heating and pressing.

  (5) Subsequently, in a state where the assembly 2080 and the annular workpiece 2022 are heated, the annular workpiece 2022 is pressed downward in the vertical direction, and the workpiece 2020 is moved upward in the vertical direction. It is pushed toward. Thereby, the annular bonding material 2021 is pressed between the annular workpiece 2022 and the inner flange-shaped structure 2041, and the annular workpiece 2022 is formed in the inner flange shape via the annular bonding material 2021. The structure 2041 is joined.

2.3 Apparatus for Inspecting Assembly Product The schematic diagram of FIG. 18 shows an apparatus for inspecting the assembly product of the second embodiment and the assembly product of the second embodiment.

  The apparatus 2160 for inspecting an assembly according to the second embodiment includes a camera 2180, a rotary table 2181, and an image processing apparatus 2182 as shown in FIG. The camera 2180 and the image processing device 2182 may be integrated.

  When the assembly 2080 is inspected, the assembly 2080 is rotated in the circumferential direction by the rotary table 2181 and photographed by the camera 2180 from above. A photographed image obtained by photographing is sent to the image processing device 2182. The image processing device 2182 processes the sent captured image and determines whether or not the annular bonding material 2021 is at an allowable position. The arrangement of the camera 2180 and the assembly 2080 may be changed.

2.4 Method for Inspecting Assembly Product The flowchart of FIG. 19 shows a method for inspecting the assembly product of the second embodiment.

  Step S41 in FIG. 19 is executed by the camera 2180. Steps S42 to S44 in FIG. 19 are executed by the image processing device 2182.

  (1) When the assembly 2080 is inspected, the assembly 2080 is photographed in step S41 as shown in FIG. Photographing is performed in a state where the flange surface 2120 faces upward in the vertical direction, and is performed from a direction that is less than 90 degrees from the normal direction of the main surface 2101 of the annular bonding material 2021.

  The schematic diagram of FIG. 20 shows an image used in the method for inspecting an assembly according to the second embodiment.

  An image 2200 used in the method for inspecting an assembly according to the second embodiment, as shown in FIG. 20, shows the main surface of the annular bonding material 2021 when the annular bonding material 2021 is in an allowable position. An area 2220 corresponding to 2101 (see FIG. 13) is included. When the annular bonding material 2021 is not in an allowable position, the image 2200 may include an area corresponding to the flange surface 2120 of the exposed inner flange-like structure 2041 without including the area 2220.

  (2) Subsequently, inspection frames 2240 and 2241 are set in the image 2200 in step S42. Inspection frames 2240 and 2241 are included in area 2220.

  (3) Subsequently, in step S43, the density is detected in the inspection frames 2240 and 2241.

  (4) Subsequently, in step S44, when the concentration satisfies the condition, it is determined that the annular bonding material 2021 is in an allowable position. This determination condition reflects that the reflectance of the main surface 2101 of the annular bonding material 2021 is relatively low, but the reflectance of the flange surface 2120 of the inner flange-like structure 2041 is relatively high.

  According to the method for inspecting an assembly according to the second embodiment, the annular bonding material 2021 is allowed to be allowed based on the concentration reflecting whether or not the annular bonding material 2021 is allowed. It is determined whether or not there is. For this reason, it is appropriately determined whether or not the annular bonding material 2021 is in an allowable position.

  The above detailed description of the invention is illustrative and does not limit the scope of the invention. Accordingly, there are modifications and variations that do not depart from the scope of the invention.

1000 Joined body 1020 To-be-joined object 1021,1023 Toric joining material 1022,1024 To-be-joined object 1160 Assembly 1320 Image 1340,1341,1342 Edge 1360 Area 1380,1381,1382,1383,1384,1385,1386 , 1387 Inspection frame 2000 Joined body 2020 Joined object 2021 Annular joining material 2022 Annular object to be joined 2080 Assembly 2200 Image 2220 Area 2240, 2241 Inspection frame

Claims (8)

a) It has a cylindrical or rod-like structure and an outer flange-like structure, the cylindrical or rod-like structure extends in the axial direction, and the outer flange-like structure extends radially outward from the cylindrical or rod-like structure. The outer flange-shaped structure has a flange surface and a flange outer peripheral surface;
An annular object to be joined having a joined surface through the cylindrical or rod-like structure;
An annular bonding material having one main surface facing the flange surface and the other main surface facing the bonded surface, through the cylindrical or rod-shaped structure;
An assembly including the above is photographed from a direction parallel to the flange surface, and includes the first edge corresponding to the outer peripheral surface of the flange and the second edge corresponding to the surface to be bonded, and the annular bonding material is allowed. Obtaining an image that further includes a third edge corresponding to the one main surface when the image is at a position,
b) setting a first inspection frame including the first edge in the image;
c) detecting a radial position of the first edge in the first inspection frame;
d) setting a second inspection frame including the second edge in the image, the relative position of the first inspection frame relative to the position of the first edge being fixed;
e) detecting an axial position of the second edge in the second inspection frame;
f) setting at least one third inspection frame including the third edge in the image, the relative position of the first inspection frame relative to the position of the first edge being fixed;
g) detecting an axial position of the third edge in the at least one third inspection frame;
h) determining that the annular bonding material is in an allowable position when an axial distance from an axial position of the second edge to an axial position of the third edge is greater than a threshold;
Of inspecting an assembly comprising: 2. The method of inspecting an assembly according to claim 1, wherein step a) images the assembly with the flange surface facing upward in the vertical direction. The at least one third inspection frame is two or more third inspection frames;
Step g) detects the axial position of the third edge in each of the two or more third inspection frames;
The step h) determines that the annular bonding material is in an allowable position when the axial distance is larger than the threshold in any one of the two or more third inspection frames. How to inspect the assembly. i) It has a cylindrical or rod-like structure and an outer flange-like structure, the cylindrical or rod-like structure extends in the axial direction, and the outer flange-like structure extends radially outward from the cylindrical or rod-like structure. The outer flange-shaped structure has a flange surface and a flange outer peripheral surface;
An annular object to be joined having a joined surface through the cylindrical or rod-like structure;
An annular bonding material having one main surface facing the flange surface and the other main surface facing the bonded surface, through the cylindrical or rod-shaped structure;
Preparing an assembly comprising:
j) inspecting the assembly by a method for inspecting an assembly according to any one of claims 1 to 3, and
k) After step j), joining the annular workpiece to the outer flange-like structure by heating and pressing via the annular joining material;
Of producing a joined body comprising: a) It has a cylindrical or rod-like structure and an outer flange-like structure, the cylindrical or rod-like structure extends in the axial direction, and the outer flange-like structure extends radially outward from the cylindrical or rod-like structure. The outer flange-shaped structure has a flange surface and a flange outer peripheral surface;
An annular bonding material that passes through the cylindrical or rod-like structure, has a main surface, and the main surface faces the flange surface;
An area corresponding to the annular bonding material when the assembly is photographed from a direction parallel to the flange surface and includes an edge corresponding to the outer peripheral surface of the flange and is in a position where the annular bonding material is allowed. Obtaining an image further comprising:
b) setting a first inspection frame including the edge in the image;
c) detecting a radial position of the edge in the first inspection frame;
d) setting at least one second inspection frame including the area in a fixed relative position to the edge position in the first inspection frame in the image;
e) detecting an axial size of the area in the at least one second inspection frame;
f) determining that the annular bonding material is in an allowable position when the axial size of the area is greater than a threshold;
Of inspecting an assembly comprising: 6. The method for inspecting an assembly according to claim 5, wherein the step a) images the assembly in a state where the flange surface faces downward in the vertical direction. The at least one second inspection frame is two or more second inspection frames;
Step e) detects the axial size in each of the two or more second inspection frames,
The step f) determines that the annular bonding material is in an allowable position when the axial size is larger than the threshold in any one of the two or more second inspection frames. 6. Method for inspecting an assembly. g) It has a cylindrical or rod-like structure and an outer flange-like structure, the cylindrical or rod-like structure extends in the axial direction, and the outer flange-like structure extends radially outward from the cylindrical or rod-like structure. The outer flange-shaped structure has a flange surface and a flange outer peripheral surface;
An annular bonding material that passes through the cylindrical or rod-like structure, has a main surface, and the main surface faces the flange surface;
Preparing an assembly comprising:
h) inspecting the assembly by a method for inspecting an assembly according to any of claims 5 to 7;
i) preparing an annular object to be joined;
j) after step h) and step i), passing the tubular or rod-like structure through the annular workpiece;
k) After step j), joining the annular workpiece to the outer flange-like structure by heating and pressing via the annular joining material;
Of producing a joined body comprising:

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