WO2022196021A1 - 連通孔検査装置及び連通孔検査方法 - Google Patents
連通孔検査装置及び連通孔検査方法 Download PDFInfo
- Publication number
- WO2022196021A1 WO2022196021A1 PCT/JP2021/048164 JP2021048164W WO2022196021A1 WO 2022196021 A1 WO2022196021 A1 WO 2022196021A1 JP 2021048164 W JP2021048164 W JP 2021048164W WO 2022196021 A1 WO2022196021 A1 WO 2022196021A1
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- WO
- WIPO (PCT)
- Prior art keywords
- light
- communication hole
- angle
- rotation angle
- hole inspection
- Prior art date
Links
- 238000004891 communication Methods 0.000 title claims abstract description 136
- 238000007689 inspection Methods 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 60
- 238000005266 casting Methods 0.000 claims abstract description 12
- 230000004907 flux Effects 0.000 claims description 91
- 108091008695 photoreceptors Proteins 0.000 claims description 39
- 238000010586 diagram Methods 0.000 description 10
- 230000001681 protective effect Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 238000012545 processing Methods 0.000 description 6
- 230000007704 transition Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C19/00—Components or accessories for moulding machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores
- G01N2021/9542—Inspecting the inner surface of hollow bodies, e.g. bores using a probe
- G01N2021/9544—Inspecting the inner surface of hollow bodies, e.g. bores using a probe with emitter and receiver on the probe
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/10—Scanning
- G01N2201/101—Scanning measuring head
Definitions
- the present invention relates to a communicating hole inspection device and a communicating hole inspection method.
- An object of the present invention is to provide a communicating hole inspection device and a communicating hole inspection method capable of satisfactorily inspecting communicating holes.
- a communication hole inspection device which is a communication hole inspection device for inspecting the communication hole of a structure having a communication hole with a casting surface formed on the inner surface, wherein a part of the communication hole A light emitter arranged to emit a light flux, a light receiving body arranged in another part of the communication hole and receiving the light flux from the light emitter, and a rotation angle of the light emitter to change the a rotation mechanism for changing a light flux received by a light emitter; a light flux received by the light emitter when the rotation angle of the light emitter is set to a first angle; a determination unit that determines the open state of the communication hole based on at least the light flux received by the light emitter when the light emitter is set to a second angle different from the angle.
- a communication hole inspection method is a communication hole inspection method for inspecting the communication hole of a structure having a communication hole having a casting surface formed on the inner surface thereof, wherein the communication hole is arranged in a part of the communication hole. a step of receiving a light beam emitted from the emitted light-emitting body by a light-receiving body arranged in another part of the communication hole; a luminous flux received by the light receiving body when the rotation angle of the light emitter is set to a first angle; and setting the rotation angle of the light emitter to a second angle different from the first angle. determining whether or not the communication hole is open based on at least the luminous flux received by the light emitter when the communication hole is opened.
- FIG. 1 is a block diagram showing a part of the communication hole inspection device according to the first embodiment.
- FIG. 2 is a diagram showing a state in which an inspection jig is attached to a structure to be inspected.
- FIG. 3 is a diagram showing an example of arrangement of light emitting modules and light receiving modules.
- FIG. 4 is a perspective view showing an inspection jig.
- FIG. 5 is a plan view showing an inspection jig.
- FIG. 6 is a plan view showing an example of a structure that is an object to be inspected.
- FIG. 7 is a flow chart showing the operation of the communication hole inspection device according to the first embodiment.
- 8A and 8B are diagrams showing a part of the communication hole inspection device according to the second embodiment.
- FIG. 9 is an exploded perspective view of the rotating mechanism.
- 10A and 10B are perspective views showing part of the inspection jig.
- FIG. 11 is a diagram showing an example of the total sum of luminous fluxes received by the photoreceptor.
- FIG. 12 is a flow chart showing the operation of the communication hole inspection device according to the second embodiment.
- FIG. 1 is a block diagram showing a part of the communication hole inspection device according to this embodiment.
- FIG. 2 is a diagram showing a state in which an inspection jig is attached to a structure to be inspected.
- the communication hole inspection device 10 can be provided with an inspection device main body 16 .
- the communication hole inspection device 10 may further include an inspection jig 48 (see FIG. 2).
- the through-hole inspection device 10 may further include a plurality of light emitting modules 11 and a plurality of light receiving modules 13 .
- the light emitting module 11 and the light receiving module 13 can be provided on an inspection jig 48 (see FIG. 2).
- the inspection jig 48 can be provided with eight light-emitting modules 11a to 11h (see FIG. 2), but four light-emitting modules 11 are illustrated in FIG.
- the inspection jig 48 can be provided with eleven light receiving modules 13a to 13k (see FIG.
- Reference numeral 11 is used when describing the light emitting module in general, and reference numerals 11a to 11h are used when describing individual light emitting modules. Further, reference numeral 13 is used when general light-receiving modules are described, and reference numerals 13a to 13k are used when describing individual light-receiving modules.
- FIG. 3 is a diagram showing an example of arrangement of light emitting modules and light receiving modules.
- a communication hole 36 can be formed in a structure 34 that is an object to be inspected.
- An opening 38 formed in the structure 34 communicates with the communication hole 36 .
- a light emitting module 11 can be arranged in one opening 38 of the structure 34 .
- the light receiving module 13 can be arranged in an opening 38 different from the opening 38 in which the light emitting module 11 is arranged. In other words, the light emitting module 11 can be arranged in a part of the communication hole 36 .
- the light receiving module 13 can be arranged in another part of the communication hole 36 .
- Reference numeral 38 is used when describing the opening in general.
- Reference numerals 38a-38o are used when describing individual openings.
- the light emitting module 11 ie, the light projecting module, may be equipped with an amplifier (not shown) and the light emitter 12 .
- Light emitter 12 may emit a beam of light.
- a light emitting diode LED: Light Emitting Diode
- the light-emitting diode may be a light-emitting diode that emits visible light, or may be a light-emitting diode that emits infrared light.
- the light emitting module 11 may be provided with a protective tube 40 that protects the light emitting module 11 .
- a material of the protective tube 40 for example, a material having a light shielding property can be used.
- the protection tube 40 may be provided with an opening 42 for emitting the light emitted from the light emitter 12 to the outside.
- the light emitter 12 can emit light according to a control signal supplied from the inspection device body 16 .
- Each of the light receiving modules 13 may be provided with a light receiving body 14 having a light receiving surface (omnidirectional light receiving surface) 30, an amplifier (not shown), and an A/D converter (not shown).
- the light receiving module 13 may be provided with a protective tube 44 that protects the light receiving module 13 .
- a light shielding material can be used, but the material is not limited to this.
- Protective tube 44 may be provided with an opening 46 for receiving light emitted from light emitter 12 .
- the light-receiving body 14 receives the light emitted from the light-emitting body 12 on the light-receiving surface 30 and guides the received light to a light-receiving sensor (not shown).
- photoreceptor 14 may receive light emitted from light emitter 12 .
- a photodiode or the like can be used as the light receiving sensor, but it is not limited to this.
- An amplifier may amplify the signal obtained by the light receiving sensor.
- An A/D converter can convert an analog signal obtained by amplification by an amplifier into a digital signal. A digital signal obtained in this manner can be supplied to the inspection apparatus main body 16 .
- the inspection apparatus main body 16 may be provided with a calculation unit 20, a storage unit 21, an operation unit 22, and a display unit 23.
- the computing unit 20 can be configured by a processor such as a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit). That is, the arithmetic unit 20 can be configured by a processing circuit.
- the calculation unit 20 may include a control unit 24 , a determination unit 26 and a display control unit 27 .
- the control unit 24 , the determination unit 26 , and the display control unit 27 can be realized by executing a program stored in the storage unit 21 by the calculation unit 20 .
- At least part of the control unit 24, the determination unit 26, and the display control unit 27 may be implemented by an integrated circuit such as ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or the like. At least part of the control unit 24, the determination unit 26, and the display control unit 27 may be configured by an electronic circuit including a discrete device.
- ASIC Application Specific Integrated Circuit
- FPGA Field-Programmable Gate Array
- the storage unit 21 can be composed of a volatile memory (not shown) and a non-volatile memory (not shown). Volatile memory may include, for example, RAM (Random Access Memory). Examples of nonvolatile memory include ROM (Read Only Memory), flash memory, and the like. Data and the like may be stored, for example, in volatile memory. Programs, tables, maps, etc. may be stored, for example, in non-volatile memory. At least part of the storage unit 21 may be provided in the processor, integrated circuit, or the like as described above.
- the operation unit 22 can be used when a user (person in charge of inspection) operates the inspection apparatus body 16 .
- a keyboard, a mouse, and the like can be used as the operation unit 22, but the operation unit 22 is not limited to this.
- the display unit 23 is provided with a display element (not shown).
- a display element for example, a liquid crystal display element, an organic electroluminescence display element, or the like can be used.
- the operation unit 22 and the display unit 23 may be configured by a touch panel (not shown) provided with such a display element.
- FIG. 4 is a perspective view showing an inspection jig.
- FIG. 5 is a plan view showing an inspection jig.
- the inspection jig 48 may be provided with a plate 50 .
- a plurality of through holes 51 may be formed in the plate 50 .
- Through holes 51 may be formed to correspond to openings 38 formed in structure 34 .
- the light emitting modules 11a to 11h and the light receiving modules 13a to 13k can be inserted into the plurality of through holes 51, respectively.
- each light emitting module 11 may be provided with a protective tube 40 (see FIG. 3).
- a bearing (not shown) may be attached to the protective tube 40 .
- the bearings may be housed within bearing holders 62 .
- Bearing holders 62 may be secured to plate 50 by fastening members 64 .
- a bolt and nut may be used as the fastening member 64, but the fastening member 64 is not limited to this.
- each light receiving module 13 may be provided with a protective tube 44 (see FIG. 3).
- Protective tube 44 may be fixed to plate 50 by fixing member 66 .
- the inspection jig 48 may be provided with a rotating mechanism 53 for rotating the light emitting module 11 .
- the bearing and bearing holder 62 described above can form part of the rotation mechanism 53 .
- the inspection jig 48 may be provided with a link mechanism 54 for collectively rotating the plurality of light emitting modules 11 .
- the link mechanism 54 can form part of the rotation mechanism 53 .
- the link mechanism 54 includes a partial link mechanism 54A and a partial link mechanism 54B.
- the partial link mechanism 54A is provided with a skeleton member 58A.
- the partial link mechanism 54B is provided with a skeleton member 58B.
- the longitudinal direction of the skeleton member 58A is along the longitudinal direction of the plate 50. As shown in FIG. Moreover, the longitudinal direction of the skeleton member 58B is also along the longitudinal direction of the plate 50 .
- Reference numeral 58 is used when describing the skeleton member in general. Reference numerals 58A and 58B are used when describing individual frame members.
- the partial link mechanism 54A is further provided with link members 60a to 60c.
- link members 60a to 60c are fixed to each of the light emitting modules 11a to 11c.
- the other end sides of the link members 60a to 60c are rotatably supported by the skeleton member 58A.
- the partial link mechanism 54B is further provided with link members 60d to 60h.
- One end sides of link members 60d to 60h are fixed to each of the light emitting modules 11d to 11h.
- the other end sides of the link members 60d to 60h are rotatably supported by the skeleton member 58B.
- the skeletal member 58A and the skeletal member 58B are coupled by a spring 56. As shown in FIG.
- the rotation angle (light projection angle) of the light emitting module 11 changes.
- the rotation angle (projection angle) of the light emitter 12 provided in the light emitting module 11 changes.
- the rotation angle of the light emitter 12 changes, the luminous flux received by the light receiver 14 changes. That is, when the rotation angle of the light-emitting body 12 changes, the amount of light received by the light-receiving body 14 changes.
- a handle 68 may be further provided on the inspection jig 48 . Handles 68 may be attached to one longitudinal side and the other longitudinal side of plate 50, respectively. The handle 68 can be used when the inspection jig 48 is attached to and detached from the structure 34 by the user.
- the inspection jig 48 may further include alignment pins 70 .
- the alignment pin 70 is for alignment between the inspection jig 48 and the structure 34 .
- two alignment pins 70 may be provided on test fixture 48 .
- the alignment pin 70 can be inserted into the alignment hole 72 (see FIG. 6 ) formed in the structure 34 .
- FIG. 6 is a plan view showing an example of a structure that is an object to be inspected.
- the structural body (casting) 34 to be inspected is a cylinder head which is a part of an automobile engine
- FIG. 6 shows a state in which the inspection jig 48 (see FIG. 4) is attached to the structure 34.
- illustration of the plate 50, the link mechanism 54, etc. is omitted in order to avoid complication.
- communication holes (channels) 36 for passing cooling water are arranged in a complicated manner. That is, the water jacket is intricately stretched inside the structure 34 .
- a plurality of communication holes 36 are present inside the structure 34 .
- the inner surface (wall surface) of the communication hole 36 is formed by a casting surface.
- the structure 34 is provided with openings (communication openings) 38a to 38o.
- Reference numeral 38 is used when describing the opening in general.
- Reference numerals 38a-38o are used when describing individual openings.
- the light emitting module 11a can be arranged in the opening 38b.
- the light receiving module 13a can be arranged in the opening 38a.
- the light receiving module 13a receives light emitted from the light emitting module 11a arranged in the opening 38b.
- the light emitting module 11b can be arranged in the opening 38c.
- the light receiving module 13b can be arranged in the opening 38d.
- the light receiving module 13b receives light emitted from the light emitting module 11b arranged in the opening 38c.
- a light emitting module 11c may be arranged in the opening 38e.
- a light receiving module 13c may be arranged in the opening 38f.
- the light receiving module 13c receives light emitted from the light emitting module 11c arranged in the opening 38e.
- a light emitting module 11d can be arranged in the opening 38g.
- a light receiving module 13d can be arranged in the opening 38h. The light receiving module 13d receives light emitted from the light emitting module 11d arranged in the opening 38g.
- a light emitting module 11e is arranged in the opening 38i.
- a light receiving module 13e may be further arranged in the opening 38h. The light receiving module 13e receives light emitted from the light emitting module 11e arranged in the opening 38i.
- a light receiving module 13f may be arranged in the opening 38j. The light receiving module 13f receives light emitted from the light emitting module 11e arranged in the opening 38i.
- a light emitting module 11f may be arranged in the opening 38k.
- a light receiving module 13g may be further arranged in the opening 38j.
- the light receiving module 13g receives light emitted from the light emitting module 11f arranged in the opening 38k.
- a light receiving module 13h may be further arranged in the opening 38l.
- the light receiving module 13h receives light emitted from the light emitting module 11f arranged in the opening 38k.
- a light emitting module 11g can be arranged in the opening 38m.
- a light receiving module 13i may be further arranged in the opening 38l.
- the light receiving module 13i receives light emitted from the light emitting module 11g arranged in the opening 38m.
- a light receiving module 13j may be arranged in the opening 38n.
- the light receiving module 13j receives light emitted from the light emitting module 11g arranged in the opening 38m.
- a light emitting module 11h can be arranged in the opening 38o.
- a light receiving module 13k can be arranged in the opening 38n. The light receiving module 13k receives light emitted from the light emitting module 11h arranged in the opening 38o.
- the light emitting module 11 can be arranged in a part of the communication hole 36.
- the light emitter 12 can be arranged in part of the communication hole 36 .
- the light receiving module 13 can be arranged in another part of the communication hole 36 .
- the photoreceptor 14 can be arranged in another portion of the communication hole 36 .
- the light emitter 12 and the light receiver 14 can be arranged with respect to each of the plurality of communication holes 36 .
- the light emitted from the light emitting module 11a can be received by the light receiving module 13a.
- Light emitted from the light emitting module 11b can be received by the light receiving module 13b.
- Light emitted from the light emitting module 11c can be received by the light receiving module 13c.
- Light emitted from the light emitting module 11d can be received by the light receiving module 13d.
- Light emitted from the light emitting module 11h can be received by the light receiving module 13k. That is, in these, one light-receiving body 14 is provided for one light-emitting body 12 .
- the light receiving modules 13e and 13f can receive light emitted from the light emitting module 11e.
- the light receiving modules 13g and 13h can receive light emitted from the light emitting module 11f.
- the light receiving modules 13i, 13j can receive light emitted from the light emitting module 11g. That is, in these, a plurality of light receiving bodies 14 are provided for one light emitting body 12 .
- the light-emitting modules 11 can irradiate predetermined light beams into the communication holes 36 respectively.
- the light receiving module 13 can receive the luminous flux emitted from the light emitting module 11 .
- the luminous flux received by the light receiving module 13 may include not only the luminous flux directly reaching the light receiving module 13 from the light emitting module 11 but also the luminous flux reflected on the inner surface of the communication hole 36 after being emitted from the light emitting module 11. Even if the communication hole 36 is curved, a certain amount of light flux can reach the light receiving module 13 .
- the control unit 24 can control the light emitting module 11 and the light receiving module 13 . Specifically, the control unit 24 can appropriately supply control signals to the light emitting modules 11a to 11h.
- the light emitters 12 provided in the light emitting module 11 can emit light according to control signals supplied from the control section 24 . Light emitted from the light emitter 12 provided in the light emitting module 11 can pass through the communication hole 36 and reach the light receiving module 13 . Light reaching the light receiving module 13 is received by the photoreceptor 14 . Light received by photoreceptor 14 may reach a light receiving sensor, not shown.
- the light-receiving sensor outputs a signal corresponding to the amount of light incident on the light-receiving surface of the light-receiving sensor.
- a signal output from the light receiving sensor is amplified by an amplifier.
- a signal amplified by the amplifier is converted into a digital signal by an A/D converter.
- a digital signal output from the A/D converter is input to the inspection apparatus main body 16 . In this way, control signals are appropriately supplied to the light emitting modules 11a to 11h, and signals obtained by the light receiving modules 13a to 13k can be input to the inspection apparatus main body 16.
- the signal obtained by the light receiving module 13a is used.
- a signal obtained by the light receiving module 13b is used when the light emitting module 11b is caused to emit light.
- a signal obtained by the light receiving module 13c is used when the light emitting module 11c is caused to emit light.
- a signal obtained by the light receiving module 13d is used.
- Signals obtained by the light receiving modules 13e and 13f are used when the light emitting module 11e emits light.
- Signals obtained by the light receiving modules 13g and 13h are used when the light emitting module 11f emits light.
- Signals obtained by the light receiving modules 13i and 13j are used when the light emitting module 11g is caused to emit light.
- a signal obtained by the light receiving module 13k is used when the light emitting module 11h is caused to emit light.
- Each of the multiple signals thus obtained reflects the state of each of the multiple communication holes 36 .
- the rotation angle of the light emitter 12 can be set to, for example, the first angle.
- the first angle can be, for example, such that the light emitted by the light emitter 12 may not sufficiently reach the photoreceptor 14 .
- the determination unit 26 can determine the light flux received by the light receiving body 14 when the rotation angle of the light emitting body 12 is set to the first angle.
- the rotation angle of the light emitter 12 can be set to, for example, the second angle.
- the second angle can be, for example, an angle such that light emitted from light emitter 12 can sufficiently reach light receiver 14 .
- the determination unit 26 can determine the luminous flux received by the light receiving body 14 when the rotation angle of the light emitting body 12 is set to the second angle.
- the determining unit 26 determines the luminous flux received by the light receiving body 14 when the rotation angle of the light emitter 12 is set to the first angle, and the light flux received when the rotation angle of the light emitter 12 is set to a second angle different from the first angle.
- the open state of the communication hole 36 can be determined based on at least the luminous flux received by the photoreceptor 14 . For example, the light flux received by the light-receiving body 14 when the rotation angle of the light-emitting body 12 is set to the first angle and the light flux received by the light-receiving body 14 when the rotation angle of the light-emitting body 12 is set to the second angle When the difference is sufficiently large, the determination unit 26 can determine that the communication hole 36 is sufficiently opened.
- the difference between the luminous flux received by the light-receiving body 14 when the rotation angle of the light-emitting body 12 is set to the first angle and the light flux received by the light-receiving body 14 when the rotation angle of the light-emitting body 12 is set to the second angle is If it is equal to or greater than the threshold, the determination unit 26 can determine that the communication hole 36 is sufficiently opened.
- the difference between the luminous flux received by the light-receiving body 14 when the rotation angle of the light-emitting body 12 is set to the first angle and the light flux received by the light-receiving body 14 when the rotation angle of the light-emitting body 12 is set to the second angle is If it is not sufficiently large, the determination unit 26 can determine that the communication hole 36 is not sufficiently opened.
- the difference between the luminous flux received by the light-receiving body 14 when the rotation angle of the light-emitting body 12 is set to the first angle and the light flux received by the light-receiving body 14 when the rotation angle of the light-emitting body 12 is set to the second angle is , the determination unit 26 can determine that the communication hole 36 is not sufficiently opened.
- the display control unit 27 controls the display of the display unit 23.
- the display control unit 27 can display the determination result and the like by the determination unit 26 on a display screen (not shown) of the display unit 23 .
- the communication hole inspection device 10 is configured.
- FIG. 7 is a flow chart showing the operation of the communication hole inspection device according to this embodiment.
- step S1 the user, that is, the person in charge of inspection sets the rotation mechanism 53 to the initial state.
- the rotation mechanism 53 can be set to the initial state by sliding the skeleton member 58 forming part of the link mechanism 54 to one side in the longitudinal direction of the skeleton member 58 .
- the rotation angle of the light-emitting body 12 provided in the light-emitting module 11a is set, for example, to an angle such that the light emitted from the light-emitting body 12 cannot sufficiently reach the light-receiving body 14 provided in the light-receiving module 13a. obtain.
- the rotation angle of the light-emitting body 12 provided in the light-emitting module 11b is set, for example, to an angle such that the light emitted from the light-emitting body 12 cannot sufficiently reach the light-receiving body 14 provided in the light-receiving module 13b. obtain.
- the rotation angle of the light-emitting body 12 provided in the light-emitting module 11c is set, for example, to an angle such that the light emitted from the light-emitting body 12 cannot sufficiently reach the light-receiving body 14 provided in the light-receiving module 13c. obtain.
- the rotation angle of the light-emitting body 12 provided in the light-emitting module 11d is set, for example, to an angle such that the light emitted from the light-emitting body 12 cannot sufficiently reach the light-receiving body 14 provided in the light-receiving module 13d. obtain.
- the rotation angle of the light emitter 12 provided in the light emitting module 11e can be set as follows. That is, for example, the light emitted from the light-emitting body 12 cannot sufficiently reach the light-receiving body 14 provided in the light-receiving module 13e, but the light-emitting body 12 provided in the light-receiving module 13f reaches the light-receiving body 14.
- the angle can be set such that the emitted light can fully reach.
- the rotation angle of the light emitter 12 provided in the light emitting module 11f can be set as follows. That is, for example, the light emitted from the light emitting body 12 cannot reach the light receiving body 14 provided in the light receiving module 13g sufficiently, but the light emitted from the light emitting body 12 provided in the light receiving module 13h cannot reach the light receiving body 14. The angle can be set such that the emitted light can fully reach.
- the rotation angle of the light emitter 12 provided in the light emitting module 11g can be set as follows. That is, for example, the light emitted from the light emitter 12 cannot sufficiently reach the light receiver 14 provided in the light receiving module 13i, but the light emitted from the light emitter 12 reaches the light receiver 14 provided in the light receiver module 13j.
- the angle can be set such that the emitted light can fully reach.
- the rotation angle of the light-emitting body 12 provided in the light-emitting module 11h is set, for example, to an angle such that the light emitted from the light-emitting body 12 cannot sufficiently reach the light-receiving body 14 provided in the light-receiving module 13k. obtain.
- the case where the user sets the rotation mechanism 53 to the initial state has been described as an example, but the rotation mechanism 53 may be set to the initial state by a robot or the like. After that, the process transitions to step S2.
- step S2 the control unit 24 sequentially causes the light emitters 12 to emit light, and sequentially acquires signals corresponding to the luminous flux received by the light receivers 14. That is, the control unit 24 sequentially causes the light emitter 12 to emit light, and sequentially acquires signals corresponding to the luminous flux received by the light receiver 14 . More specifically, the control unit 24 causes the light emitter 12 provided in the light emitting module 11a to emit light, and acquires a signal corresponding to the luminous flux received by the light receiving body 14 provided in the light receiving module 13a. Next, the control unit 24 causes the light emitter 12 provided in the light emitting module 11b to emit light, and acquires a signal corresponding to the luminous flux received by the light receiving body 14 provided in the light receiving module 13b.
- control unit 24 causes the light emitter 12 provided in the light emitting module 11c to emit light, and acquires a signal corresponding to the luminous flux received by the light receiving body 14 provided in the light receiving module 13c.
- the controller 24 causes the light emitter 12 provided in the light emitting module 11d to emit light.
- the controller 24 acquires a signal corresponding to the light flux received by the light receiving body 14 provided in the light receiving module 13d.
- the control unit 24 causes the light-emitting body 12 provided in the light-emitting module 11e to emit light.
- control unit 24 obtains a signal corresponding to the light flux received by the light receiving body 14 provided in the light receiving module 13e and a signal corresponding to the light flux received by the light receiving body 14 provided to the light receiving module 13f. do.
- control unit 24 causes the light emitter 12 provided in the light emitting module 11f to emit light.
- control unit 24 obtains a signal corresponding to the light flux received by the light receiving body 14 provided in the light receiving module 13g and a signal corresponding to the light flux received by the light receiving body 14 provided to the light receiving module 13h. do.
- the controller 24 causes the light emitter 12 provided in the light emitting module 11g to emit light.
- control unit 24 obtains a signal corresponding to the light flux received by the light receiving body 14 provided in the light receiving module 13i and a signal corresponding to the light flux received by the light receiving body 14 provided to the light receiving module 13j. do.
- control unit 24 causes the light emitter 12 provided in the light emitting module 11h to emit light, and acquires a signal corresponding to the luminous flux received by the light receiving body 14 provided in the light receiving module 13k. After that, the process transitions to step S3.
- step S3 the user changes the rotation angle of the light emitter 12 by operating the rotation mechanism 53.
- the rotation angle is changed by sliding the skeleton member 58 forming part of the link mechanism 54 to the other side in the longitudinal direction of the skeleton member 58 .
- the rotation angle of the light-emitting body 12 provided in the light-emitting module 11a can be set, for example, to an angle that allows the light emitted from the light-emitting body 12 to sufficiently reach the light-receiving body 14 provided in the light-receiving module 13a.
- the rotation angle of the light-emitting body 12 provided in the light-emitting module 11b can be set, for example, to an angle that allows the light emitted from the light-emitting body 12 to sufficiently reach the light-receiving body 14 provided in the light-receiving module 13b.
- the rotation angle of the light-emitting body 12 provided in the light-emitting module 11c can be set, for example, to an angle that allows the light emitted from the light-emitting body 12 to sufficiently reach the light-receiving body 14 provided in the light-receiving module 13c.
- the rotation angle of the light-emitting body 12 provided in the light-emitting module 11d can be set, for example, to an angle that allows the light emitted from the light-emitting body 12 to sufficiently reach the light-receiving body 14 provided in the light-receiving module 13d.
- the rotation angle of the light emitter 12 provided in the light emitting module 11e can be set as follows. That is, for example, the light emitted from the light emitting body 12 can sufficiently reach the light receiving body 14 provided in the light receiving module 13e, but the light emitted from the light emitting body 12 can reach the light receiving body 14 provided in the light receiving module 13f. It can be set at an angle such that the light emitted cannot reach it sufficiently.
- the rotation angle of the light emitter 12 provided in the light emitting module 11f can be set as follows. That is, for example, the light emitted from the light emitting body 12 can sufficiently reach the light receiving body 14 provided in the light receiving module 13g, but the light emitted from the light emitting body 12 can reach the light receiving body 14 provided in the light receiving module 13h. It can be set at an angle such that the light emitted cannot reach it sufficiently.
- the rotation angle of the light emitter 12 provided in the light emitting module 11g can be set as follows.
- the light emitted from the light emitting body 12 can sufficiently reach the light receiving body 14 provided in the light receiving module 13i, but the light emitted from the light emitting body 12 can reach the light receiving body 14 provided in the light receiving module 13j. It can be set at an angle such that the light emitted cannot reach it sufficiently.
- the rotation angle of the light-emitting body 12 provided in the light-emitting module 11h can be set, for example, to an angle that allows the light emitted from the light-emitting body 12 to sufficiently reach the light-receiving body 14 provided in the light-receiving module 13k.
- the case where the user operates the rotation mechanism 53 has been described as an example, but the rotation mechanism 53 may be operated by a robot or the like. After that, the process transitions to step S4.
- step S4 similarly to step S2, the control unit 24 sequentially causes the light emitter 12 to emit light, and sequentially acquires signals corresponding to the luminous flux received by the light receiver 14. After that, the process transitions to step S5.
- step S5 the determination unit 26 determines the open state of the communication hole 36 based on the signal obtained in step S2 and the signal obtained in step S4. For example, when the difference between the signal corresponding to the light flux received by the light receiving body 14 in step S2 and the signal corresponding to the light flux received by the light receiving body 14 in step S4 is sufficiently large, the determination unit 26 It can be determined that the communication hole 36 is sufficiently opened. If the difference between the signal corresponding to the luminous flux received by the photoreceptor 14 in step S2 and the signal corresponding to the luminous flux received by the photoreceptor 14 in step S4 is equal to or greater than a predetermined threshold, the determination unit 26 It can be determined that the communication hole 36 is sufficiently opened.
- the determination unit 26 It can be determined that the communication hole 36 is not sufficiently opened. If the difference between the signal corresponding to the luminous flux received by the photoreceptor 14 in step S2 and the signal corresponding to the luminous flux received by the photoreceptor 14 in step S4 is less than a predetermined threshold, the determination unit 26 It can be determined that the communication hole 36 is not sufficiently opened. Thus, the processing shown in FIG. 7 is completed.
- the light emitter 12 is arranged in a part of the communication hole 36 and the light receiver 14 is arranged in another part of the communication hole 36 .
- the rotation angle of the light emitter 12 by the rotation mechanism 53, the luminous flux received by the light receiver 14 is changed.
- the amount of light received by the light receiving body 14 is changed by changing the light projection angle of the light emitting body 12 by the rotation mechanism 53 .
- the luminous flux received by the light-receiving body 14 when the rotation angle of the light-emitting body 12 is set to the first angle and the light flux received by the light-receiving body 14 when the rotation angle of the light-emitting body 12 is set to the second angle are Based on this, the open state of the communication hole 36 is determined.
- the open state of the communication hole 36 is determined. Therefore, according to this embodiment, it is possible to provide the communication hole inspection device 10 that can satisfactorily determine the open state of the communication hole 36 .
- the luminous flux received by the light-receiving body 14 when the rotation angle of the light-emitting body 12 is set to the first angle and the light-receiving body 14 when the rotation angle of the light-emitting body 12 is set to the second angle are The open state of the communication hole 36 was determined based on the received luminous flux.
- the communication hole inspection apparatus 10 according to the present embodiment sequentially receives the light beams by the light receiving body 14 while sequentially changing the rotation angle of the light emitting body 12, and opens the communication hole 36 based on the light beams sequentially received by the light receiving body 14. It determines the state.
- FIGS. 8A and 8B are diagrams showing a part of the communication hole inspection device according to this embodiment. 8A and 8B show an inspection jig 48A provided in the communication hole inspection apparatus 10 according to this embodiment.
- the inspection jig 48A can be provided with a plate 50A.
- a slit 74 is formed in the plate 50A.
- the slit 74 is for enabling the positions of the light emitting module 11 and the light receiving module 13 to be displaced.
- the longitudinal direction of the slit 74 is along the longitudinal direction of the plate 50A.
- Rotation mechanisms (rotation mechanisms) 76A and 76B may be provided on the plate 50A.
- 76 A of rotation mechanisms are for changing the rotation angle of the light-emitting body 12.
- the rotation mechanism 76B is for changing the rotation angle of the photoreceptor 14.
- Reference numeral 76 is used when describing the rotation mechanism in general.
- Reference numerals 76A and 76B are used when describing individual rotation mechanisms.
- FIG. 9 is an exploded perspective view of the rotating mechanism.
- the rotating mechanism 76 may be provided with a housing 78 .
- An opening 80 is formed in the bottom surface of the housing 78 .
- a rotating shaft 82 can be inserted into the opening 80 .
- the rotating shaft 82 is for rotating the light emitting module 11 or the light receiving module 13 .
- the light emitter 12 provided in the light emitting module 11 can be pivotally supported on the rotating shaft 82 .
- the photoreceptor 14 provided in the photoreceptor module 13 can be supported by the rotation shaft 82 .
- the pivoting mechanism 76 may further include a driver 84 .
- the driving body 84 can be configured by, for example, a stepping motor or the like.
- Driver 84 may rotate shaft 82 .
- the driver 84 can rotate the rotary shaft 82 based on the drive signal supplied from the controller 24 .
- Rotation shaft 82 and driver 84 may be housed within housing 78 .
- the rotating mechanism 76 may further include a lid portion 86 .
- the lid portion 86 can be fixed to the housing 78 by, for example, screws (not shown).
- the inspection jig 48A may be provided with a slide mechanism 88 that allows the rotation mechanism 76 to slide.
- the slide mechanism 88 may be provided with a drive device 90 for sliding the pivoting mechanism 76 .
- the driving device 90 can slide the rotation mechanism 76 in the longitudinal direction of the plate 50A based on the signal supplied from the control section 24. As shown in FIG. By appropriately sliding the rotating mechanism 76, the distance between the light emitting module 11 and the light receiving module 13 can be changed.
- 10A and 10B are perspective views showing part of the inspection jig. 10A and 10B show a state in which the inspection jig 48A is viewed obliquely from below.
- an opening 42 is formed in the protective tube 40 provided in the light emitting module 11.
- An opening 46 (see FIG. 3) is also formed in a protection tube 44 provided in the light receiving module 13 . Since the protection tube 40 provided in the light emitting module 11 can be rotated by the rotation mechanism 76A, the direction of the opening 42 provided in the protection tube 40 can also be changed. Moreover, since the protection tube 44 provided in the light receiving module 13 can be rotated by the rotation mechanism 76B, the direction of the opening 46 provided in the protection tube 44 can also be changed.
- the luminous flux received by the photoreceptor 14 from the light emitter 12 can be maximized under the following conditions.
- the direction from the central axis of the protection tube 40 to the opening 42 is the direction from the light emitting module 11 to the light receiving module 13 .
- the direction from the central axis of the protection tube 44 to the opening 46 is the direction from the light receiving module 13 to the light emitting module 11 .
- the luminous flux from emitter 12 received by photoreceptor 14 can be maximized. That is, when the opening 42 provided in the light-emitting module 11 and the opening 46 provided in the light-receiving module 13 face each other, the luminous flux from the light-emitting body 12 received by the light-receiving body 14 can be maximized.
- the luminous flux from the light-emitting body 12 received by the light-receiving body 14 is Decreases in direction. That is, in a state where the opening 42 provided in the light emitting module 11 and the opening 46 provided in the light receiving module 13 do not face each other, the luminous flux from the light emitter 12 received by the light receiver 14 is It decreases according to the rotation angle and the rotation angle of the photoreceptor 14 .
- the inspection jig 48A can be attached to the structure 34 as follows. That is, the light emitting module 11 needs to be inserted into one opening 38 that communicates with a part of the communication hole 36 to be inspected, and another opening that communicates with another part of the communication hole 36 is required.
- the light receiving module 13 needs to be inserted into the opening 38 . Therefore, by sliding the rotation mechanism 76 using the slide mechanism 88, the distance between the one opening 38 and the other opening 38 and the distance between the light emitting module 11 and the light receiving module 13 can be changed. match. Control over the slide mechanism 88 may be performed by the control unit 24, for example.
- the light emitting module 11 is inserted into the opening 38 that communicates with a part of the communication hole 36
- the light receiving module 13 is inserted into the opening 38 that communicates with another part of the communication hole 36.
- An inspection jig 48 A is attached to the structure 34 .
- the attachment of the inspection jig 48A to the structure 34 may be performed by a user or may be performed by a robot.
- the determination unit 26 can determine the open state of the communication hole 36 based on the light beams sequentially received by the photoreceptor 14 . More specifically, the determination unit 26 can determine the open state of the communication hole 36 based on the total sum of the light beams sequentially received by the photoreceptor 14 .
- FIG. 11 is a diagram showing an example of the total sum of luminous fluxes received by the photoreceptor.
- the horizontal axis in FIG. 11 is the rotation angle, and the vertical axis in FIG. FIG. 11 shows an example in which the communication hole 36 is 0% clogged, an example in which the communication hole 36 is clogged by 25%, and an example in which the communication hole 36 is clogged by 50%. It is shown.
- FIG. 11 when the communication hole 36 is 0% blocked, the sum of the light beams received by the photoreceptor 14 is sufficiently large. That is, when the communication hole 36 is in a good state of opening, the sum of the luminous fluxes received by the photoreceptor 14 is sufficiently large.
- FIG. 11 shows an example of the total sum of luminous fluxes received by the photoreceptor.
- the relationship between the degree of blockage of the communication hole 36 and the total sum of the light beams received by the photoreceptor 14 is obtained in advance by actual measurement, simulation, or the like.
- a table, a relational expression, etc. showing the relationship between the degree of blockage of the communication hole 36 and the total sum of the luminous flux received by the photoreceptor 14 can be stored in advance in the storage unit 21 .
- the determination unit 26 can determine the open state of the communication hole 36 based on the table, relational expression, etc. stored in the storage unit 21 and the total sum of the light beams received by the photoreceptor 14 .
- FIG. 12 is a flow chart showing the operation of the communication hole inspection device according to this embodiment.
- step S ⁇ b>11 the control unit 24 sequentially rotates the light emitter 12 and sequentially acquires signals corresponding to the luminous flux received by the light receiver 14 . More specifically, the control unit 24 causes the light emitter 12 provided in the light emitting module 11 to emit light, and obtains a signal corresponding to the luminous flux received by the light receiving body 14 provided in the light receiving module 13 . After that, the controller 24 changes the rotation angle of the light emitter 12 by a predetermined angle amount. The amount of change in the rotation angle when rotating the light emitter 12 can be, for example, 10 degrees, but is not limited to this.
- control unit 24 causes the light emitter 12 provided in the light emitting module 11 to emit light, and obtains a signal corresponding to the luminous flux received by the light receiving body 14 provided in the light receiving module 13 .
- the controller 24 further changes the rotation angle of the light emitter 12 by a predetermined angle.
- the amount of change in the rotation angle can be, for example, 10 degrees, but is not limited to this.
- the controller 24 sequentially rotates the light emitter 12 and sequentially acquires signals corresponding to the light beams received by the light receiver 14 .
- step S11 is completed. After that, the process transitions to step S12.
- step S12 the control unit 24 determines whether or not the rotation angle of the photoreceptor 14 has reached a predetermined angle.
- the predetermined angle can be, for example, 360 degrees, but is not limited to this. If the rotation angle of the photoreceptor 14 has not reached the predetermined angle (NO in step S12), the process proceeds to step S13. When the rotation angle of the photoreceptor 14 reaches the predetermined angle (YES in step S12), the process proceeds to step S14.
- step S13 the controller 24 changes the rotation angle of the photoreceptor 14 by a predetermined angle amount.
- the amount of change in the rotation angle when rotating the photoreceptor 14 can be, for example, 10 degrees, but is not limited to this. After that, the processing after step S11 is repeated.
- step S14 the control unit 24 calculates the sum of the signals corresponding to the luminous flux received by the photoreceptor 14. After that, the process transitions to step S15.
- step S15 the determination unit 26 determines the open state of the communication hole 36 based on the table, relational expression, etc. stored in the storage unit 21 and the total sum of the light beams received by the light receiving body 14. Thus, the processing shown in FIG. 12 is completed.
- the light flux may be sequentially received by the light receiver 14 while the rotation angle of the light emitter 12 is sequentially changed, and the open state of the communication hole 36 may be determined based on the light flux sequentially received by the light receiver 14 . .
- the structure 34 to be inspected is a cylinder head has been described as an example, but it is not limited to this.
- Various castings such as a water jacket provided on the outer periphery of an internal rotation type rotary motor, can be inspected.
- a communication hole inspection device (10) is a communication hole inspection device for inspecting the communication hole of a structure (34) having a communication hole (36) having a casting surface formed on the inner surface thereof, the communication hole inspecting a part of the communication hole.
- a light emitter (12) arranged in the communication hole and emitting a light flux
- a light receiving body (14) arranged in another part of the communication hole and receiving the light flux from the light emitter, and a rotation angle of the light emitter a rotation mechanism (53, 76A) for changing the light flux received by the light receiver by changing the light flux received by the light receiver when the rotation angle of the light emitter is set to a first angle
- a determination unit (26) for determining an open state of the communication hole based at least on the light flux received by the light emitter when the rotation angle of the light emitter is set to a second angle different from the first angle; And prepare. According to such a configuration, it is possible to provide a communication hole inspection device that can satisfactorily determine the open state of the communication hole
- a plurality of said light-receiving bodies may be provided for one said light-emitting body. Such a configuration can contribute to cost reduction.
- the structure may have a plurality of the communication holes, and the light emitter and the light receiver may be arranged with respect to each of the plurality of the communication holes. According to such a configuration, the inspection can be completed in a short time even if the structure has a plurality of communication holes.
- the rotation mechanism (53) may include a link mechanism (54) that rotates the plurality of light emitters. According to such a configuration, it is possible to quickly inspect the open state of the communication hole.
- the light receiving body While sequentially changing the rotation angle of the light emitter, the light receiving body sequentially receives the light flux, and the determining unit determines the open state of the communication hole based on the light flux sequentially received by the light receiving body. good too. According to such a configuration, the open state of the communication hole can be inspected satisfactorily and reliably.
- the luminous body is supported by a rotating shaft (82), and may further include a driver (84) for rotating the rotating shaft. According to such a configuration, the open state of the communication hole can be inspected satisfactorily and easily.
- a communicating hole inspection method is a communicating hole inspection method for inspecting the communicating hole of a structure having a communicating hole with a casting surface formed on the inner surface, wherein the light is emitted from a light emitter arranged in a part of the communicating hole
- a plurality of said light-receiving bodies may be provided for one said light-emitting body.
- the structure may have a plurality of communication holes, and the light emitter and the light receiver may be arranged for each of the plurality of communication holes.
- the plurality of light emitters may be rotated by a link mechanism for rotating the plurality of light emitters.
- the communication hole is determined based on the light beams sequentially received by the light receiving body. may be determined.
- the light emitter may be supported by a rotating shaft, and in the step of changing the rotation angle of the light emitter, the rotating shaft may be rotated by a driver that rotates the rotating shaft.
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Abstract
Description
第1実施形態による連通孔検査装置及び連通孔検査方法について図面を用いて説明する。図1は、本実施形態による連通孔検査装置の一部を示すブロック図である。図2は、検査対象である構造体に検査治具を装着した状態を示す図である。
第2実施形態による連通孔検査装置及び連通孔検査方法について図面を用いて説明する。
本発明についての好適な実施形態を上述したが、本発明は上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲において、種々の改変が可能である。
Claims (12)
- 内面に鋳肌が形成された連通孔(36)を有する構造体(34)の前記連通孔を検査する連通孔検査装置(10)であって、
前記連通孔の一部に配されるとともに光束を発する発光体(12)と、
前記連通孔の別の一部に配されるとともに前記発光体からの光束を受ける受光体(14)と、
前記発光体の回動角度を変化させることで、前記受光体が受ける光束を変化させる回動機構(53、76A)と、
前記発光体の前記回動角度を第1角度に設定した際に前記受光体が受ける光束と、前記発光体の前記回動角度を前記第1角度とは異なる第2角度に設定した際に前記発光体が受ける光束とに少なくとも基づいて、前記連通孔の開通状態を判定する判定部(26)と、
を備える、連通孔検査装置。 - 請求項1に記載の連通孔検査装置において、
1つの前記発光体に対して複数の前記受光体が備えられている、連通孔検査装置。 - 請求項1又は2に記載の連通孔検査装置において、
前記構造体は、複数の前記連通孔を備え、
前記発光体と前記受光体とが、複数の前記連通孔の各々に対して配されている、連通孔検査装置。 - 請求項3に記載の連通孔検査装置において、
前記回動機構(53)は、複数の前記発光体を回動させるリンク機構(54)を備える、連通孔検査装置。 - 請求項1~3のいずれか1項に記載の連通孔検査装置において、
前記発光体の前記回動角度を順次変化させつつ、前記受光体によって光束を順次受け、
前記判定部は、前記受光体が順次受けた光束に基づいて、前記連通孔の開通状態を判定する、連通孔検査装置。 - 請求項5に記載の連通孔検査装置において、
前記発光体は、回転軸(82)に軸支されており、
前記回転軸を回転させる駆動体(84)を更に備える、連通孔検査装置。 - 内面に鋳肌が形成された連通孔を有する構造体の前記連通孔を検査する連通孔検査方法であって、
前記連通孔の一部に配された発光体から発せられる光束を、前記連通孔の別の一部に配された受光体によって受けるステップ(S2)と、
前記発光体の回動角度を変化させることで、前記受光体が受ける光束を変化させるステップ(S3)と、
前記発光体の前記回動角度を第1角度に設定した際に前記受光体が受ける光束と、前記発光体の前記回動角度を前記第1角度とは異なる第2角度に設定した際に前記発光体が受ける光束とに少なくとも基づいて、前記連通孔の開通状態を判定するステップ(S5)と
を有する、連通孔検査方法。 - 請求項7に記載の連通孔検査方法において、
1つの前記発光体に対して複数の前記受光体が備えられる、連通孔検査方法。 - 請求項7又は8に記載の連通孔検査方法において、
前記構造体は、複数の前記連通孔を備え、
前記発光体と前記受光体とが、複数の前記連通孔の各々に対して配される、連通孔検査方法。 - 請求項9に記載の連通孔検査方法において、
前記回動角度を変化させるステップでは、複数の前記発光体を回動させるリンク機構によって複数の前記発光体を回動させる、連通孔検査方法。 - 請求項7~9のいずれか1項に記載の連通孔検査方法において、
前記発光体の前記回動角度を順次変化させつつ、前記受光体によって光束を順次受け、
前記連通孔の開通状態を判定するステップでは、前記受光体が順次受けた光束に基づいて、前記連通孔の開通状態を判定する、連通孔検査方法。 - 請求項11に記載の連通孔検査方法において、
前記発光体は、回転軸によって軸支され、
前記発光体の前記回動角度を変化させるステップでは、前記回転軸を回転させる駆動体によって前記回転軸を回転させる、連通孔検査方法。
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- 2021-12-24 US US18/281,852 patent/US12055499B2/en active Active
- 2021-12-24 WO PCT/JP2021/048164 patent/WO2022196021A1/ja active Application Filing
- 2021-12-24 CN CN202180095763.7A patent/CN116981934A/zh active Pending
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2022
- 2022-02-14 TW TW111105301A patent/TWI800256B/zh active
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TW202238070A (zh) | 2022-10-01 |
TWI800256B (zh) | 2023-04-21 |
US20240151654A1 (en) | 2024-05-09 |
JPWO2022196021A1 (ja) | 2022-09-22 |
JP7436749B2 (ja) | 2024-02-22 |
CN116981934A (zh) | 2023-10-31 |
US12055499B2 (en) | 2024-08-06 |
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