JP2009012140A - Assembly inspection device and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an assembly inspection device and method efficiently inspecting whether assembling parts are normally assembled. <P>SOLUTION: After assembling the assembling parts into a fitting hole 3 formed in a valve body 2, by a parts assembling device, an assembling height in relation to the fitting hole 3 of the assembling parts is measured. Based on the measured result, whether each of the assembling parts is normally assembled in the fitting hole 3 is inspected. Propriety of a control valve unit can be accurately inspected, therefore, at a stage when the assembling is completed, that is, in the same process as an assembling process. The inspection is automated, and a manufacturing process is considerably rationalized. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is used, for example, in an assembly process of a control valve unit of an automatic transmission of a vehicle to inspect whether or not a spool, a spring and a plug are normally assembled in a fitting hole of a valve body. The present invention relates to an apparatus and an inspection method thereof.

  In general, an automatic transmission of a vehicle includes a control valve unit that controls supply and discharge of hydraulic pressure. This control valve unit is configured by assembling a spool, a spring, and a plug into each insertion hole provided in the valve body. Conventionally, the control valve unit (assembly) is mainly assembled manually, but the clearance between the spool in the control valve unit and the insertion hole of the valve body is usually extremely severe, 0.015 mm. The inner peripheral surface of the insertion hole may be damaged. As described above, when the insertion hole is damaged or foreign matter is mixed between the spool and the insertion hole, the spool cannot operate smoothly. The malfunction of the automatic transmission due to this malfunction of the spool accounts for the majority of all the causes of the malfunction of the automatic transmission, and in order to ensure the quality of the automatic transmission, the assembly of the control valve unit is automated. There was an urgent need.

  Therefore, the cylindrical guide bush is positioned coaxially with respect to the insertion hole to be the target of the valve body, and each assembly component (spool, spring and plug) is put into the guide bush by a robot or the like, Further, there is known a technique (hereinafter referred to as a conventional technique) in which each assembly part put in the guide bush is inserted into the insertion hole of the valve body while being guided by the guide bush by vibrating the guide bush ( For example, see Patent Document 1). By the way, in the valve body, a processing error of about 0.3 mm is unavoidable, and the position of the insertion hole has an error (variation) of 0.3 mm in the normal position. As mentioned above, the clearance between the spool and the insertion hole of the valve body is usually extremely severe, 0.015mm, so even if the assembly of the control valve unit is automated, the problem of distorting the spool and the insertion hole is eliminated. Not a reason.

In the prior art, in order to inspect the spool and the insertion hole, that is, the malfunction of the spool, it is necessary to check the operation of the spool in a separate process after the assembly of the control valve unit is completed. The operation check is a factor that reduces the productivity of the automatic transmission. Furthermore, when the assembly of the control valve unit is automated, a shortage of assembly parts becomes a problem. For example, even if the plug is missing, the missing item is not detected until the inspection process after the assembly of the control valve unit is completed. Therefore, the control valve unit in which the missing part of the plug is detected in the inspection process is returned to the assembly process, or the plug is manually assembled, and in any case, the efficiency is extremely low.
Japanese Patent No. 2774316

  Accordingly, the present invention has been made in view of the above circumstances, and provides an assembly inspection apparatus and an assembly inspection method capable of efficiently inspecting whether or not an assembly part is normally assembled. It was made as an issue to do.

In order to solve the above problems, an assembly inspection apparatus according to the present invention is an assembly inspection apparatus configured by assembling an assembly part in an assembly hole formed in a main body part. A first measuring means for measuring an assembly height with respect to the assembly hole, and a first determination as to whether or not the assembly part is normally assembled in the assembly hole based on the measurement result of the first measurement means. Determining means.
According to the assembly inspection apparatus of the present invention, based on the assembly height of the assembly part measured by the first measurement unit, the first determination unit determines whether or not the assembly part is assembled normally. Therefore, the assembly can be inspected at the stage where the assembly of the assembly parts is completed, and the assembly of the assembly parts into the assembly holes (hereinafter referred to as subassembly) is automated. Solid quality can be ensured.

In order to solve the above problems, an assembly inspection method of the present invention is an inspection method for an assembly configured by assembling an assembly part in an assembly hole formed in a main body part, and comprising an assembly hole After assembling the assembly part, measure the assembly height of the assembly part with respect to the assembly hole, and based on this measurement result, check whether the assembly part is properly assembled in the assembly hole. It is characterized by inspecting.
According to the assembly inspection method of the present invention, it is inspected based on the assembly height of the assembly part whether or not the assembly part is normally assembled, so that the assembly of the assembly part is completed. Inspection of the assembly can be performed in stages, and the quality of the assembly can be ensured when automating the assembly.

(Aspect of the Invention)
In the following, aspects of the invention that is recognized as being capable of being claimed in the present application (hereinafter referred to as claimable invention) will be exemplified, and each exemplified aspect will be described. Here, as in the claims, each aspect is divided into paragraphs, numbers are assigned to the respective paragraphs, and the descriptions of other paragraphs are cited as necessary. This is for the purpose of facilitating the understanding of the claimable invention, and is not intended to limit the combination of the constituent elements constituting the claimable invention to those described in the following sections. In other words, the claimable invention should be construed in consideration of the description accompanying each section, the description of the embodiment, etc., and as long as the interpretation is followed, another aspect is added to the aspect of each section. Moreover, the aspect which deleted the component from the aspect of each term can also be one aspect of the claimable invention.
In each of the following items, each of items (1) to (7) corresponds to each of claims 1 to 7.

(1) An inspection apparatus for an assembly in which an assembly part is assembled in an assembly hole formed in a main body part, and the first is to measure an assembly height of the assembly part with respect to the assembly hole. An assembly comprising: measurement means; and first determination means for determining whether or not an assembly part is normally assembled in the assembly hole based on a measurement result of the first measurement means. Inspection device.
According to the assembly inspection apparatus described in this section, the first determination unit determines whether or not the assembly part is normally assembled based on the assembly height of the assembly part measured by the first measurement unit. Is determined by As a result, the assembly can be inspected when the assembly of the assembly parts is completed, and the quality of the assembly can be ensured when the assembly is automated.
In this embodiment, the spool, spring, and plug (assembly part) are inserted into the insertion hole (assembly hole) formed in the valve body (main body part), and the control valve unit (assembly) of the automatic transmission of the vehicle is assembled. Assuming that a three-dimensional structure is configured, immediately after the spool, spring and plug are inserted into the insertion hole, the assembly height of the plug facing the insertion hole is measured by the first measurement means, and the first measurement means Based on the measurement result, it is determined by the first determination means whether or not the spool, the spring and the plug are normally inserted in the insertion hole. In this case, when the measurement result, that is, the assembly height of the plug is smaller than a preset normal range, it is determined as NG (assembly failure) by recognizing that the assembly component is missing. In addition, when the measurement result is larger than the normal range, it is determined that the assembly part is NG (assembly failure) by recognizing that the assembly part is caught in the middle of the insertion hole.

(2) The first measuring means is inserted into the assembly hole, one end of which is abutted against the assembly component assembled in the assembly hole, and provided in the apparatus main body, and the rod is pivoted A guide portion that guides in a direction, a plurality of detected portions that are disposed on the rod and disposed along the axis of the rod, and a plurality that are disposed in the apparatus main body and are disposed relative to each detected portion (1) The assembly inspection apparatus according to (1), wherein the assembly height is measured with respect to an assembly hole of an assembly component based on a detection signal of each sensor.
According to the assembly inspection apparatus described in this section, the rod is brought into contact with an assembly part assembled in the assembly hole, and in this state, each detected portion disposed on the rod is opposed to each other. It is detected by a sensor. Based on the detection signal of each sensor at this time, the assembly height of the assembly component is measured.
For example, when the control valve unit is inspected using the aspect of this section, the first detected portion and the second detected portion having axial lengths set to the upper portion of the rod are vertically arranged at predetermined intervals. To do. Then, a measuring element connected to the lower part of the rod is inserted into the insertion hole of the valve body, and the measuring element is inserted into each assembly part (spool, spring and plug) inserted into the insertion hole of the valve body. The first sensor (light-shielding sensor) relative to the first detected part is turned off and the second detected part is turned off when it is brought into contact with the end face of the plug located at the uppermost position (if it is not missing). It is determined that the opposing second sensor (light-shielding sensor) is in the normal state, and the first sensor and the second sensor are in the OFF state, that is, the assembly height is higher than the normal state (the assembly The attached part is caught in the middle of the insertion hole) and the first sensor and the second sensor are ON, that is, the assembled height is lower than the normal state (the assembled part is missing) Is determined to be abnormal In may be configured to first determining means.
Desirably, the first sensor and the second sensor are optical fiber sensors that can be mounted at relatively small intervals.

(3) Second measurement means for measuring a reaction force from the assembly part acting on the rod when the assembly part assembled in the assembly hole is pushed in the axial direction by the rod; (2) The assembly inspection apparatus according to (2), further comprising: a second determination unit configured to determine whether or not the assembly part is normally assembled in the assembly hole based on the measurement result.
According to the assembly inspection apparatus described in this section, the reaction force from the assembly part acting on the rod when the assembly part assembled in the assembly hole is pushed by the rod with a predetermined pushing load. Is measured by the second measuring means, and based on the measurement result, it is determined by the second determining means whether or not the assembly part is normally assembled in the assembly hole.
In the aspect of this section, for example, even if it is determined to be normal in the inspection based on the assembly height in the above-described aspect (2), the reaction force from the assembly part acting on the rod is When the set value is reached, it is found that the assembly part is caught in the assembly hole (the assembly part is twisting the assembly hole).

(4) The second measuring means is arranged opposite to the other end of the rod, and the reaction from the assembly part acting on the rod when the assembly part assembled in the assembly hole is pushed by the rod. (3) The assembly inspection apparatus according to (3), comprising: a pressure receiving portion to which a force is input; and a pressure sensor for measuring a reaction force acting on the rod input to the pressure receiving portion.
According to the assembly inspection apparatus described in this section, the reaction force from the assembly component when the assembly component assembled in the assembly hole is pushed by the rod with a predetermined pushing load is input to the pressure receiving portion. Thus, the reaction force input to the pressure receiving unit is measured by the pressure sensor.
For example, when the control valve unit is inspected using the aspect of this section, the rod is inserted into the insertion hole of the valve body, and the plug inserted into the insertion hole of the valve body is pushed by the rod with a predetermined pushing load. At that time, it is determined that the pressure sensor is ON, that is, the reaction force from the plug (assembled part) input to the rod is smaller than the set value, and the pressure sensor is OFF. That is, the second determination means may be configured to determine that the reaction force from the plug input to the rod is equal to or greater than the set value as abnormal (a state where the plug is stuck in the insertion hole). .

(5) A method for inspecting an assembly configured by assembling an assembly part in an assembly hole formed in a main body part, and after assembling the assembly part in the assembly hole, An assembly inspection method comprising: measuring an assembly height with respect to an assembly hole, and inspecting whether or not an assembly part is normally assembled in the assembly hole based on the measurement result.
According to the assembly inspection method described in this section, it is determined whether or not the assembled part is properly assembled based on the assembly height of the assembled part. The assembly can be inspected in the completed stage, ie the same process as the assembly process. Thereby, a manufacturing process can be significantly rationalized compared with the case where an inspection is carried out in a separate process.

(6) An assembly part assembled in the assembly hole is brought into contact with a rod that is inserted into the assembly hole and movable in the axial direction, and relative to a plurality of detected parts arranged on the rod. (5) The assembly inspection method according to (5), wherein whether or not the assembly parts are normally assembled in the assembly holes is inspected according to the detection state of each sensor.
According to the assembly inspection method described in this section, for example, the first detected part (upper) and the second detected part (lower), each having an axial length set on the rod, are vertically moved at predetermined intervals. When the rod is inserted into the assembly hole and brought into contact with the assembly component, the first sensor (light-shielding sensor) corresponding to the first detected portion is OFF and the second target is detected. It is determined that the second sensor (light-shielding sensor) corresponding to the detection unit is ON, and the first sensor and the second sensor are OFF, that is, the assembly height is higher than the normal state. State (state in which assembly parts are caught in the middle of the insertion hole), and state where first sensor and second sensor are ON, that is, state in which assembly height is lower than normal state (assembly) The state in which the part is missing is determined to be abnormal.

(7) Measure the reaction force from the assembly part acting on the rod when the assembly part assembled in the assembly hole is pushed in the axial direction by the rod inserted in the assembly hole. (6) The assembly inspection method according to (6), characterized in that, based on the measurement result, it is inspected whether or not the assembly part is normally assembled in the assembly hole.
According to the assembly inspection method described in this section, the reaction force from the assembly part when the assembly part assembled in the assembly hole is pushed by the rod with a predetermined pushing load is measured. Based on the measurement result, it is determined whether or not the assembly part is normally assembled in the assembly hole.
In the aspect of this section, for example, even if it is determined to be normal in the inspection based on the assembly height in the above-described aspect (6), the reaction force from the assembly part acting on the rod is When the set value is reached, it is found that the assembly part is caught in the assembly hole (the assembly part is twisting the assembly hole).

  It is possible to provide an assembly inspection apparatus and an assembly inspection method capable of efficiently inspecting whether or not the assembly parts are normally assembled.

An embodiment of the present invention will be described with reference to FIGS.
The assembly inspection apparatus 1 according to the present embodiment is arranged in an assembly process of a control valve unit (assembly) of an automatic transmission, and is formed in a valve body 2 (main body part) as shown in FIG. It is inspected whether or not the spool 4, the spring 5 and the plug 6 (assembled parts) are normally assembled in the hole 3 (assembled hole). As shown in FIG. 2, the assembly inspection apparatus 1 includes a positioning mechanism 31 including a linear guide, a ball screw, and an electric motor, so that the X direction (left and right direction in FIG. 2) and Z direction (FIG. 2). The inspection head 7 can be moved and positioned in the vertical direction. The inspection head 7 is supported by the main body frame via the bracket 9 and the positioning mechanism 31. Note that mounting plates 13 and 14 for attaching the inspection head 7 to the bracket 9 are fixed to upper and lower end surfaces of the bracket 9 on the inspection head 7 side.

  As shown in FIGS. 2 and 3, the inspection head 7 includes a first rod 8 (rod) whose axis is arranged vertically. The first rod 8 has a rod body 18 having a guided portion 11 guided in the axial direction by the guide bush 10 and a front end portion (lower end portion in FIG. 2) formed into a spherical surface so that the valve body 2 is fitted therein. And a measuring element 12 inserted into the hole 3. The guide bush 10 is formed in a cylindrical shape and has a mounting flange 16 at an intermediate position in the outer axial direction (vertical direction in FIGS. 2 and 3), and is axial in the upper part, that is, the mounting flange 16 as a boundary. The upper part is fitted into a bush fitting hole 15 formed in the mounting plate 14. As shown in FIG. 4, two dogs 19, 20 (dogs) having a diameter larger than the diameter of the guided part 11 are formed in the upper part of the rod body 18, that is, in the axially upper part of the guided part 11. ) Is disposed. The dogs 19 and 20 have their axial lengths set in accordance with the inspection object (in this embodiment, a control valve unit). Further, a first pressure receiving portion 17 having the same diameter as each of the dogs 19 and 20 is provided at the upper end portion of the rod body 18.

  The inspection head 7 is provided with a first photosensor 23 and a second photosensor 24 (first measurement means) that are composed of a light projecting side sensor and a light receiving side sensor. The photosensors 23 and 24 are supported by sensor brackets 25 and 26 disposed on the mounting plate 14, and light emitted horizontally from the light projecting side sensors is received by the corresponding light receiving side sensors. . The photosensors 23 and 24 are shielded from light by the dogs 19 and 20 and are not shielded by portions other than the dogs 19 and 20 of the rod body 18, that is, the first rod 8 is attached to the guide bush 10. On the other hand, they are arranged so as to be shielded by the dogs 19 and 20 when moved in the axial direction. As the photosensors 23 and 24, optical fiber sensors that can be easily arranged in a narrow place are used.

  As shown in FIGS. 2 and 3, the inspection head 7 has a second rod 21 that is disposed coaxially with the first rod 8 and is movable in the axial direction. As for the 2nd rod 21, the upper end part in which the screw was screwed penetrates the attachment plate 13 from the bottom up, and the nut 22 is screwed together by this upper end part. A second pressure receiving portion 27 having a diameter larger than that of the shaft portion of the rod 21 is formed at the lower end portion of the second rod 21. Further, a coil spring 29 is sheathed on the second rod 21, and this coil spring 29 is a pressure sensor 28 (second measuring means) installed on the lower surface of the mounting plate 13 and a second of the first rod 8. It is interposed in a compressed state between the pressure receiving part 27. Therefore, in such an inspection head 7, the first pressure receiving portion 17 of the first rod 8 is moved to the second pressure receiving portion 27 of the second rod 21 by moving the first rod 8 upward with respect to the guide bush 10. Abut. Then, by moving the first rod 8 further upward, the first rod 8 pushes up the second rod 21 while compressing the coil spring 29.

  As the second rod 21 is pushed up and the coil spring 29 is compressed, the pressure acting on the pressure sensor 28, that is, the spring force (pushing load) of the coil spring 29 acting on the pressure sensor 28 increases. The assembly inspection apparatus 1 has a structure in which the pressure sensor 28 is switched off when the pressure acting on the pressure sensor 28 reaches a preset value (hereinafter referred to as a set pressure value). .

  Next, when the control valve unit of the automatic transmission is inspected using the assembly inspection device 1, that is, the spool 4 is inserted into the fitting hole 3 (assembly hole) formed in the valve body 2 (main body part). The case of inspecting whether or not the spring 5 and the plug 6 (assembled parts) are assembled normally will be described. The spool 4, the spring 5, and the plug 6 (hereinafter referred to as each assembly component) are automatically assembled in the respective insertion holes 3 of the valve body 2 by a component assembly apparatus. 2 is a guide bush for guiding the spool 4, the spring 5 and the plug 6 in the axial direction in the component assembling apparatus. That is, in the state immediately after assembly shown in FIG. 2, each guide bush 30 is positioned coaxially with each corresponding insertion hole 3 of the valve body 2.

  First, in the initial position of the inspection head 7 shown in FIG. 5, the first rod 8 is disposed above the guide bush 30 of the component assembling apparatus positioned with respect to the insertion hole 3 to be inspected. , It is positioned coaxially with respect to the insertion hole 3. In this initial position state (hereinafter referred to as the initial state), the lower dog 20 of the first rod 8 is brought into contact with the guide bush 10 and the first pressure receiving portion 17 of the first rod 8 and the second rod 21 are in contact with each other. A gap g0 is formed between the second pressure receiving portion 27 and the second pressure receiving portion 27. Further, the first photosensor 23 (first measurement means) is turned on when light passes between the first pressure receiving portion 17 and the dog 19 of the first rod 8, and the second photosensor 24 (first measurement means). The light is transmitted between the dog 19 and the dog 20 and is turned on, and the pressure sensor 28 (second measuring means) is turned off because the pressure does not reach the set pressure. The first photosensor 23 and the second photosensor 24 are arranged so that the light is orthogonal to each other in the axial line of sight of the first rod 8, but in the following drawings, for the sake of convenience, the first photosensor 23 and the second photosensor 24 are arranged. It is described that the light from the sensor 23 and the second photosensor 24 travels in parallel.

  First, the inspection head 7 is lowered from the initial position shown in FIG. 5 and positioned at the first inspection position. In this first inspection position, when each assembly part is assembled normally, as shown in FIG. 6, the probe 12 of the first rod 8 is attached by the plug 6 assembled in the insertion hole 3. By being pushed up, the first photosensor 23 is shielded by the dog 19 and switched to OFF, and the gap between the first pressure receiving portion 17 of the first rod 8 and the second pressure receiving portion 27 of the second rod 21 is g1. Shortened to (g0> g1). Note that the second photosensor 24 and the pressure sensor 28 are maintained in the ON state. In this case, that is, in the first inspection position of the inspection head 7, when the first photosensor 23 is OFF, the second photosensor 24 is ON, and the pressure sensor 28 is ON, the main control configured by the microcomputer. The device (first determination means) determines that the assembled state is normal.

  On the other hand, as shown in FIG. 7, for example, when the plug 6 is caught in the middle of the insertion hole 3, the first pressure receiving portion of the first rod 8 is compared with the normal state at the first inspection position shown in FIG. 17 and the second pressure receiving portion 27 of the second rod 21 are shortened to g2 (g1> g2), and accordingly, the second photosensor 24 is shielded by the dog 20 and switched to OFF. In this case, that is, in the first inspection position of the inspection head 7, when the first photosensor 23 is OFF, the second photosensor 24 is OFF, and the pressure sensor 28 is ON, the main controller has an abnormal assembly state. It is determined that

  On the other hand, as shown in FIG. 8, for example, when the plug 6 is missing, the probe 12 of the first rod 8 is inserted into the insertion hole 3 as compared with the normal state at the first inspection position shown in FIG. Therefore, the first rod 8 does not move relative to the guide bush 10 in the axial direction, and the states of the photosensors 23 and 24 and the pressure sensor 28 do not change, that is, the initial state. It is. In this case, that is, in the first inspection position of the inspection head 7, when the first photosensor 23 is ON, the second photosensor 24 is ON, and the pressure sensor 28 is ON, the main controller is in an abnormal assembly state. It is determined that

  When it is determined that the assembled state is normal at the first inspection position of the inspection head 7, that is, when the first photosensor 23 is OFF, the second photosensor 24 is ON, and the pressure sensor 28 is ON, The inspection head 7 is lowered and positioned at the second inspection position (lower end position). In the second inspection position, the first rod 8 moves upward relative to the mounting plate 14 and the guide bush 10 by the reaction force from the plug 6, and pushes up the second rod 21 while compressing the coil spring 29. As a result, the second photosensor 24 is shielded by the dog 20 and switched to OFF. Here, as shown in FIG. 9, when the assembly part is assembled normally, that is, when the assembly part can slide smoothly with respect to the insertion hole 3, the pressure sensor The pressure acting on 28 is less than the set pressure value, and the pressure sensor 28 remains ON.

  In this case, that is, in the second inspection position of the inspection head 7, when the first photosensor 23 is OFF, the second photosensor 24 is OFF, and the pressure sensor 28 is ON, the main controller is in an assembled state. It is determined that By the way, for example, when the plug 6 is caught in the insertion hole 3 (the plug 6 is twisting the insertion hole 3), the plug 6 cannot slide smoothly with respect to the insertion hole 3. When the inspection head 7 is moved from the first inspection position to the second inspection position in this state, the reaction force from the plug 6 to the first rod 8 at the second inspection position of the inspection head 7, that is, the pressure sensor 28. The pressure acting on the pressure sensor 28 reaches the set pressure value of the pressure sensor 28, and the pressure sensor 28 is switched off as shown in FIG. In this case, that is, in the second inspection position of the inspection head 7, when the first photosensor 23 is OFF, the second photosensor 24 is OFF, and the pressure sensor 28 is OFF, the main controller has an abnormal assembly state. It is determined that

This embodiment has the following effects.
According to this embodiment, in the assembly process of the control valve unit (assembly), the spool 4 and the spring 5 are inserted into the fitting hole 3 (assembly hole) formed in the valve body 2 (main body part) by the component assembly device. Then, after assembling the plug 6 (assembly part), the assembly height of the assembly part with respect to the insertion hole 3 is measured, and based on the measurement result, the spool 4, the spring 5 and the plug 6 are inserted into the insertion hole 3. Since it is inspected whether or not the control valve unit is normally assembled, the control valve unit is judged to be good or bad at the stage where the assembly of the spool 4, the spring 5 and the plug 6 to the insertion hole 3 is completed, that is, the same process as the assembly process In other words, it is possible to accurately inspect the assembled state of the spool 4, the spring 5 and the plug 6 with respect to the insertion hole 3, and the inspection is automated to greatly increase the manufacturing process. It is possible to streamline the product, i.e., it is possible to improve the reliability of the control valve unit.

In addition, embodiment is not limited above, For example, you may comprise as follows.
As shown in FIG. 2, the assembly inspection apparatus 1 preferably includes a plurality of inspection heads 7 and a plurality of valve bodies 2 or a plurality of insertion holes of one valve body 2. By configuring so that the three inspections can be performed simultaneously, the inspection can be made more efficient.

It is a figure which shows schematic structure of this embodiment. It is a front view which shows the inspection head periphery of this embodiment, and a figure which shows the guide bush of a component assembly apparatus. It is a side view of the inspection head of this embodiment. It is a side view of the 1st rod of this embodiment. It is explanatory drawing of this embodiment, Comprising: It is a figure which shows the state of each sensor when a test | inspection head is an initial state. It is explanatory drawing of this embodiment, Comprising: It is a figure which shows the state of each sensor when an assembly | attachment state is normal in the 1st test | inspection position of a test | inspection head. It is explanatory drawing of this embodiment, Comprising: When the assembly | attachment state is abnormal in the 1st test | inspection position of a test | inspection head, the mode of each sensor when an assembly | attachment component is caught in the middle of a fitting hole is shown. FIG. It is explanatory drawing of this embodiment, Comprising: When the assembly | attachment state is abnormal in the 1st test | inspection position of a test | inspection head, It is a figure which shows the aspect of each sensor when an assembly component is especially missing. . It is explanatory drawing of this embodiment, Comprising: It is a figure which shows the state of each sensor when an assembly | attachment state is normal in the 2nd test | inspection position of a test | inspection head. It is explanatory drawing of this embodiment, Comprising: When the assembly | attachment state is abnormal in the 2nd test | inspection position of a test | inspection head, The figure which shows the aspect of each sensor when an assembly | attachment component is stuck in the insertion hole especially It is.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Assembly inspection apparatus, 2 Valve body (main body part), 3 Insertion hole (assembly hole), 4 Spool (assembly part), 5 Spring (assembly part), 6 Plug (assembly part), 8 1st Rod (rod), 10 Guide bush (guide part), 19, 20 Dog (first measuring means), 21 Second rod (pressure receiving part), 23, 24 Photo sensor (first measuring means), 28 Pressure sensor

Claims (7)

An assembly inspection apparatus configured by assembling an assembly part in an assembly hole formed in a main body part,
First measuring means for measuring an assembly height of the assembly part with respect to the assembly hole;
First determination means for determining whether or not the assembled part is normally assembled in the assembly hole based on the measurement result of the first measurement means;
An assembly inspection apparatus comprising: The first measuring means includes
A rod inserted into the assembly hole and having one end abutted against the assembly component assembled to the assembly hole;
A guide portion provided in the apparatus main body for guiding the rod in the axial direction;
A plurality of detected portions disposed on the rod and disposed along an axis of the rod;
A plurality of sensors disposed in the apparatus main body and disposed relative to each detected portion;
The assembly inspection apparatus according to claim 1, wherein an assembly height of the assembly component with respect to the assembly hole is measured based on a detection signal of each sensor. A second measuring means for measuring a reaction force from the assembly component acting on the rod when the assembly component assembled in the assembly hole is pushed in the axial direction by the rod;
Second determination means for determining whether or not the assembled part is normally assembled in the assembly hole based on the measurement result of the second measurement means;
The assembly inspection apparatus according to claim 2, further comprising: The second measuring means includes
The reaction force from the assembly part that acts on the rod when the assembly part that is disposed opposite to the other end of the rod and is assembled into the assembly hole is pushed by the rod is input. A pressure receiving portion,
The assembly inspection apparatus according to claim 3, further comprising: a pressure sensor that measures the reaction force acting on the rod input to the pressure receiving unit. A method for inspecting an assembly comprising an assembly part assembled in an assembly hole formed in a body part,
After assembling the assembly part in the assembly hole, the assembly height of the assembly part with respect to the assembly hole is measured, and based on the measurement result, the assembly part is installed in the assembly hole. An assembly inspection method comprising inspecting whether or not the assembly is normally performed. A rod inserted into the assembly hole and movable in the axial direction is brought into contact with the assembly component assembled in the assembly hole, and a plurality of detected portions disposed on the rod are brought into contact with each other. 6. The assembly inspection method according to claim 5, wherein whether or not the assembly parts are normally assembled in the assembly holes is inspected according to detection states of the respective sensors facing each other. The reaction force from the assembly part acting on the rod is measured when the assembly part assembled in the assembly hole is pushed in the axial direction by the rod inserted into the assembly hole. The assembly inspection method according to claim 6, wherein, based on the measurement result, it is inspected whether or not the assembly component is normally assembled in the assembly hole.

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