Miniature hole detection device

Abstract

The utility model relates to the technical field of micro-hole detection, in particular to a micro-hole detection device, which comprises a support. A detection probe is arranged on the bracket; a detection rod and a sensor assembly are arranged in the detection probe; one end of the detection rod extends into the micro hole, and the other end of the detection rod abuts against the inductor assembly. The sensor assembly is connected with a controller; the end part, extending out of the shell, of the detection rod corresponds to the depth and the diameter of the micro hole; when no hole is formed in the workpiece or the depth and the diameter of the workpiece are smaller than the size of the detection rod, the detection rod is extruded into the shell so as to abut against the sensor assembly. The sensor assembly sends a signal to the controller, and the controller can give an alarm through sound and light; compared with traditional manual measurement through tools such as a measuring scale, the precision is effectively improved, errors possibly occurring in manual operation are reduced, and the stability and consistency of detection results are ensured; and meanwhile, the detection efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of micro-hole detection technology, and more specifically, to a micro-hole detection device. Background Technology

[0002] With the rapid development of intelligent vehicle technology, the size and positional accuracy of micro-holes in components (such as fuel injectors and sensor mounting holes) are crucial to vehicle performance and safety. Traditional inspection methods often rely on manual measurement of the diameter and depth of the holes using tools such as rulers, which can no longer meet the ever-increasing precision requirements. At the same time, manual measurement is inefficient.

[0003] The applicant discovered through a search that Chinese patent document application number 201710708403.5, published on March 1, 2019, discloses a workpiece porosity detection device and a workpiece porosity detection method. The workpiece porosity detection device includes an air storage plate, an air storage tank, an air inlet, a sealing ring, and a clamping component. The air storage plate has an annular workpiece groove in its center, with the top diameter of the groove being larger than its bottom diameter. The air storage tank is located below the workpiece groove, and the air inlet communicates with the air storage tank. The air storage tank is also communicated with the workpiece groove. Sealing rings are provided on both the inner and outer walls of the workpiece groove, and the clamping component presses against the workpiece groove. However, this device also fails to solve the aforementioned technical problem.

[0004] Therefore, in order to improve or solve at least one of the above problems, it is necessary to provide a micro-hole detection device that can accurately detect the size of micro-holes. Utility Model Content

[0005] The purpose of this invention is to provide a micro-hole detection device that can accurately detect the size of micro-holes.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a micro-hole detection device, including a bracket; a detection probe is provided on the bracket; a detection rod and a sensor assembly are provided in the detection probe; one end of the detection rod extends into the micro-hole, and the other end of the detection rod abuts against the sensor assembly; the sensor assembly is connected to a controller.

[0007] The detection probe includes a housing; the housing includes a detection rod mounting section and a sensor mounting section; the detection rod is disposed in the detection rod mounting section; the sensor mounting section has a mounting cavity; the sensor assembly is disposed in the mounting cavity.

[0008] The mounting section of the detection rod is provided with a sliding hole; a limiting plate is provided at one end of the sliding hole, and a sealing sleeve mounting groove is provided at the other end of the sliding hole; a through hole is provided on the limiting plate; a sealing sleeve is provided in the sealing sleeve mounting groove; one end of the detection rod is located in the through hole, and the other end of the detection rod is located in the sealing sleeve.

[0009] The detection rod is provided with a stop block; the stop block abuts against the limiting plate; a spring is provided between the stop block and the sealing sleeve.

[0010] In one embodiment, the sensor assembly is a proximity switch sensor; the proximity switch sensor is disposed in the mounting cavity, and the detection rod abuts against the proximity switch sensor; the proximity switch sensor is connected to the controller.

[0011] As one embodiment, the sensor assembly is a toggle valve; the toggle valve is disposed in the mounting cavity; and the detection rod abuts against the toggle valve.

[0012] The toggle valve is provided with an air inlet, an air outlet, and an exhaust outlet; the air inlet is connected to an air pump; the air outlet is connected to a pressure sensor; and the pressure sensor is connected to a controller.

[0013] The controller is connected to an alarm light and a buzzer.

[0014] The beneficial effects of this utility model are as follows:

[0015] The detection probe of this invention is equipped with a detection rod, the end of which extends from the housing and corresponds to the depth and diameter of the micro-hole. When the workpiece has no hole, or the depth and diameter are smaller than the size of the detection rod, the detection rod is squeezed into the housing, thereby pressing against the sensor assembly. The sensor assembly sends a signal to the controller, which can then trigger an audible and visual alarm. Compared to traditional manual measurement using tools such as measuring rulers, this invention effectively improves accuracy, reduces errors that may occur during human operation, and ensures the stability and consistency of the detection results. At the same time, it greatly improves detection efficiency.

[0016] In this invention, the detection rod is detachably connected to the housing, allowing for the selection of different sizes of detection rods according to actual needs. By replacing different models of detection rods, the device can meet the detection requirements of holes of different sizes, making its application range more extensive and adaptable to diverse production scenarios. Attached Figure Description

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 for Figure 1 Sectional view at point AA.

[0020] Figure 3 This is a schematic diagram of the detection probe of this utility model.

[0021] Figure 4 for Figure 3 Sectional view at BB.

[0022] Figure 5 This is a schematic diagram of the structure of the toggle valve of this utility model.

[0023] The markings in the above figures are all:

[0024] The diagram is marked as follows:

[0025] 1. Bracket,

[0026] 2. Test probe,

[0027] 3. Detection rod,

[0028] 4. Shell,

[0029] 5. Detection rod mounting section, 501. Sliding hole, 502. Sealing sleeve mounting groove, 503. Limiting plate, 504. Through hole, 505. Sealing sleeve.

[0030] 6. Sensor mounting section, 601. Mounting cavity.

[0031] 7. Stop block, 701, Spring,

[0032] 8. Proximity switch sensor,

[0033] 9. Toggle valve; 901. Air inlet; 902. Air outlet; 903. Exhaust outlet; 904. Air pump; 905. Air pressure sensor. Detailed Implementation

[0034] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of this utility model, and to facilitate its implementation.

[0035] Figure 1 The micro-hole detection device shown includes a bracket 1; a detection probe 2 is provided on the bracket 1; a detection rod 3 and a sensor assembly are provided in the detection probe 2; one end of the detection rod 3 extends into the micro-hole, and the other end of the detection rod 3 abuts against the sensor assembly.

[0036] The end of the detection rod 3 extending from the detection probe 2 corresponds to the depth and diameter of the micro-hole. When there is no hole on the workpiece, or the depth and diameter are smaller than the size of the detection rod 3, the detection rod 3 is squeezed into the housing 4, thereby pressing against the sensor assembly. The sensor assembly sends a signal to the controller, which can then trigger an audible and visual alarm. Compared with traditional manual measurement using tools such as measuring rulers, this method effectively improves accuracy, reduces errors that may occur during human operation, and ensures the stability and consistency of the detection results. At the same time, it greatly improves detection efficiency.

[0037] The detection rod 3 is detachably connected to the housing 4, and different sizes of detection rod 3 can be selected according to actual needs. By replacing different models of detection rod 3, the detection needs of holes of different sizes can be met, making the application range of the device wider and adaptable to diverse production scenarios.

[0038] The detection probe 2 includes a housing 4; the housing 4 includes a detection rod mounting section 5 and a sensor mounting section 6; the detection rod 3 is disposed in the detection rod mounting section 5; the sensor mounting section 6 has a mounting cavity 601; the sensor assembly is disposed in the mounting cavity 601.

[0039] The housing 4 is fixedly connected to the bracket 1; the bracket 1 is equipped with multiple detection probes 2, which can detect multiple micro-holes at the same time; the detection rod mounting section 5 and the sensor mounting section 6 are an integral structure; the detection rod 3 is located in the detection rod mounting section 5 and can slide in the detection rod mounting section 5; the sensor assembly is fixedly connected in the mounting cavity 601.

[0040] The detection rod mounting section 5 is provided with a sliding hole 501; a limiting plate 503 is provided at one end of the sliding hole 501, and a sealing sleeve mounting groove 502 is provided at the other end of the sliding hole 501; a through hole 504 is provided on the limiting plate 503; a sealing sleeve 505 is provided in the sealing sleeve mounting groove 502; one end of the detection rod 3 is located in the through hole 504, and the other end of the detection rod 3 is located in the sealing sleeve 505.

[0041] The sliding hole 501 is a through hole; the diameter of the sliding hole 501 is larger than that of the through hole 504, and the diameter of the sliding hole 501 is smaller than that of the sealing sleeve mounting groove 502; one end of the sliding hole 501 is connected to the through hole 504, and the other end of the sliding hole 501 is connected to the sealing sleeve mounting groove 502; the sealing sleeve 505 is fixedly connected in the sealing sleeve mounting groove 502; the sealing sleeve 505 is provided with a through hole; one end of the detection rod 3 extends out of the through hole 504, and the other end of the detection rod 3 extends out of the sealing sleeve 505.

[0042] The detection rod 3 is provided with a stop 7; the stop 7 abuts against the limiting plate 503; a spring 701 is provided between the stop 7 and the sealing sleeve 505.

[0043] The stop block 7 and the detection rod 3 are an integral structure; the cross-section of the stop block 7 is circular; the diameter of the stop block 7 is larger than that of the through hole 504, and the diameter of the stop block 7 is larger than that of the through hole of the sealing sleeve 505; the stop block 7 is limited in the sliding hole 501 by the limiting plate 503 and the sealing sleeve 505; when the detection rod 3 is pressed into the housing 4 by the workpiece, the stop block 7 compresses the spring 701; when the detection rod 3 is no longer pressed against the workpiece, the spring 701 resets and extends the detection rod 3 out of the through hole.

[0044] like Figure 2 As shown, in one embodiment, the sensor assembly is a proximity switch sensor 8; the proximity switch sensor 8 is located in the mounting cavity 601, and the detection rod 3 abuts against the proximity switch sensor 8; the proximity switch sensor 8 is connected to a controller.

[0045] In the initial state, the detection rod 3 maintains a certain distance from the proximity switch sensor 8. When detecting a workpiece, if there is no hole on the workpiece, or if the depth and diameter of the hole are smaller than the size of the detection rod 3, the detection rod 3 will be squeezed by the workpiece and move along the detection rod mounting section 5 into the housing 4 until it comes into contact with the proximity switch sensor 8.

[0046] The proximity switch sensor 8 can be an inductive proximity switch, which contains a high-frequency oscillator and a detection circuit. The high-frequency oscillator generates an alternating magnetic field. When the detection rod 3 (made of metal) approaches the proximity switch sensor 8 during the pressing action and enters the alternating magnetic field, an induced current, i.e., eddy current, is generated on the surface of the detection rod 3. The magnetic field generated by the eddy current will then act on the alternating magnetic field, causing the energy loss of the oscillator to increase, the oscillation to weaken or even stop. After detecting this change, the detection circuit converts it into an electrical signal output. The proximity switch sensor 8 can convert the physical position change of the detection rod 3 from the initial distance to the pressing state into an electrical signal and transmit it to the connected controller. After receiving the signal, the controller analyzes and processes it through a pre-set program and algorithm to determine the relevant information of the hole on the workpiece, thereby realizing the detection of the micro hole on the workpiece.

[0047] like Figure 3 , Figure 4 As shown, in one embodiment, the sensor assembly is a toggle valve 9; the toggle valve 9 is located in the mounting cavity 601; the detection rod 3 abuts against the toggle valve 9.

[0048] The toggle valve 9 is fixedly connected to the housing 4; the toggle valve 9 is located in the mounting cavity 601; the detection rod 3 initially maintains a certain distance from the toggle valve 9. When detecting a workpiece, if the workpiece has no hole, or the depth and diameter of the hole are smaller than the size of the detection rod 3, the detection rod 3 will be squeezed into the housing 4 by the workpiece; the toggle valve 9 is a PB type push-button valve, a mechanical trigger element, fixed in the mounting cavity 601. When the detection rod 3 moves to contact the toggle valve 9 and the applied pressure reaches its trigger threshold, the internal mechanical structure of the toggle valve 9 is activated, making the internal air passage open. The gas flows in the pipeline and generates a change in air pressure. This change signal is transmitted to the controller through the air passage pipeline. The controller analyzes and processes the signal according to the preset pressure change parameters and logic program to realize the detection of the micro hole in the workpiece.

[0049] like Figure 5 As shown, the toggle valve 9 is provided with an air inlet 901, an air outlet 902 and an exhaust outlet 903; the air inlet 901 is connected to an air supply pump 904; the air outlet 902 is connected to a pressure sensor 905; and the pressure sensor 905 is connected to a controller.

[0050] The air pump 904 is connected to the air inlet 901, continuously providing a stable gas pressure to the air circuit. When the toggle valve 9 is not triggered, the gas is discharged through the exhaust port 903, maintaining the initial state of the air circuit. When the detection rod 3 moves to contact the toggle valve 9 and the applied pressure reaches the trigger threshold, the internal mechanical structure of the toggle valve 9 is activated, closing the exhaust port 903 and connecting the air inlet 901 and the air outlet 902, allowing gas to flow in from the air inlet 901 and out through the air outlet 902. The air pressure sensor 905 connected to the air outlet 902 can detect changes in gas pressure in the air circuit in real time and convert the pressure signal into an electrical signal, which is then transmitted to the controller. The controller analyzes and processes the signal according to the preset pressure change parameters and logic program, thereby determining the relevant information of the micro-holes on the workpiece and realizing the detection of the micro-holes on the workpiece.

[0051] The controller is connected to an alarm light and a buzzer.

[0052] The controller can provide a red light alarm; the controller can also provide a buzzer alarm.

[0053] The specific workflow of this utility model is as follows:

[0054] In the initial state, the detection rod 3 maintains a certain distance from the proximity switch sensor 8. When detecting a workpiece, if there is no hole on the workpiece, or the depth and diameter of the hole are smaller than the size of the detection rod 3, the detection rod 3 will be squeezed by the workpiece and move along the detection rod mounting section 5 into the housing until it comes into contact with the proximity switch sensor 8.

[0055] The proximity switch sensor 8 can be an inductive proximity switch, which contains a high-frequency oscillator and a detection circuit. The high-frequency oscillator generates an alternating magnetic field. When the detection rod 3 (made of metal) approaches the proximity switch sensor 8 during the pressing action and enters the alternating magnetic field, an induced current, i.e., eddy current, is generated on the surface of the detection rod 3. The magnetic field generated by the eddy current will then act on the alternating magnetic field, causing the energy loss of the oscillator to increase, the oscillation to weaken or even stop. After detecting this change, the detection circuit converts it into an electrical signal output. The proximity switch sensor 8 can convert the physical position change of the detection rod 3 from the initial distance to the pressing state into an electrical signal and transmit it to the connected controller. After receiving the signal, the controller analyzes and processes it through a pre-set program and algorithm to determine the relevant information of the hole on the workpiece, thereby realizing the detection of the micro hole on the workpiece.

[0056] In its initial state, the detection rod 3 maintains a certain distance from the toggle valve 9. When detecting a workpiece, if the workpiece has no hole, or the depth and diameter of the hole are smaller than the size of the detection rod 3, the detection rod 3 will be squeezed into the housing 4 by the workpiece. The toggle valve 9 is a PB type push-button valve, a mechanical trigger element, fixed in the mounting cavity 601. When the detection rod 3 moves to contact the toggle valve 9 and the applied pressure reaches its trigger threshold, the internal mechanical structure of the toggle valve 9 is activated, making the internal air passage open. The gas flows in the pipeline and generates a change in air pressure. This change signal is transmitted to the controller through the air passage pipeline. The controller analyzes and processes the signal according to the preset pressure change parameters and logic program to realize the detection of the micro hole in the workpiece.

[0057] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A micro-pore detection device, characterized by: Includes a bracket (1); the bracket (1) is provided with a detection probe (2); the detection probe (2) is provided with a detection rod (3) and a sensor assembly; one end of the detection rod (3) extends into a micro-hole, and the other end of the detection rod (3) abuts against the sensor assembly; the sensor assembly is connected to a controller.

2. A device for detecting micro-holes according to claim 1, characterized in that: The detection probe (2) includes a housing (4); the housing (4) includes a detection rod mounting section (5) and a sensor mounting section (6); the detection rod (3) is disposed in the detection rod mounting section (5); the sensor mounting section (6) is provided with a mounting cavity (601); the sensor assembly is disposed in the mounting cavity (601).

3. A device for detecting micro-holes according to claim 2, characterized in that: The detection rod mounting section (5) is provided with a sliding hole (501); a limiting plate (503) is provided at one end of the sliding hole (501), and a sealing sleeve mounting groove (502) is provided at the other end of the sliding hole (501); a through hole (504) is provided on the limiting plate (503); a sealing sleeve (505) is provided in the sealing sleeve mounting groove (502); one end of the detection rod (3) is located in the through hole (504), and the other end of the detection rod (3) is located in the sealing sleeve (505).

4. A device for detecting micro-holes according to claim 3, wherein: The detection rod (3) is provided with a stop (7); the stop (7) abuts against the limiting plate (503); a spring (701) is provided between the stop (7) and the sealing sleeve (505).

5. A device for detecting micro-holes according to claim 4, characterized in that: The sensor assembly is a proximity switch sensor (8); the proximity switch sensor (8) is disposed in the mounting cavity (601), and the detection rod (3) abuts against the proximity switch sensor (8); the proximity switch sensor (8) is connected to the controller.

6. A device for detecting micro-holes according to claim 4, wherein: The sensor assembly is a toggle valve (9); the toggle valve (9) is located in the mounting cavity (601); the detection rod (3) abuts against the toggle valve (9).

7. A device for detecting micro-holes according to claim 6, characterized in that: The toggle valve (9) is provided with an air inlet (901), an air outlet (902) and an exhaust outlet (903); the air inlet (901) is connected to an air pump (904); the air outlet (902) is connected to a pressure sensor (905); the pressure sensor (905) is connected to the controller.

8. A device for detecting micropores according to any one of claims 6-7, characterized in that: The controller is connected to an alarm light and a buzzer.

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