Part defect online detection device for powder metallurgy automobile part machining

Abstract

The utility model relates to the technical field of automobile part production, in particular to a part defect on-line detection device for powder metallurgy automobile part processing, which comprises a detection table, magnetic field detection equipment for detecting defects of automobile parts, in-hole detection equipment for detecting the interiors of holes of the automobile parts and a controller, a supporting mechanism is arranged on one side of the top of the detection table, the magnetic field detection equipment comprises an eddy current probe, an integrated signal generation receiver and a fixing device used for fixing the eddy current probe, and the eddy current probe is connected with the supporting mechanism through the fixing device; the in-hole detection device comprises an optical fiber sensor, an integrated signal generation receiver and a fixing assembly used for fixing the optical fiber sensor. The optical fiber sensor is connected with the supporting mechanism through the fixing assembly. The defects of the automobile parts are detected in a magnetic field and optical fiber detection mode, comprehensive and accurate detection of the automobile parts is achieved, the detection efficiency and accuracy are improved, and the detection cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts production, in particular to an online part defect detection device for powder metallurgy automobile parts processing. Background Art

[0002] Powder metallurgy has a wide range of applications, from various automotive parts, gears, sprockets, valves, bearings, bearing sleeves and other components, to various machine tool parts, turning heads, drill bits, etc., to various valve seats, and even ceramic alloy dentures.

[0003] Powder metallurgy can produce complex parts with high precision and high performance, and it also has the advantages of high material utilization, low energy consumption and environmental protection.

[0004] Powder metallurgy is a technology that uses powder to form various products through high-temperature heating. The preparation of automotive parts by powder metallurgy mainly has four steps: 1. Making blanks, first making the raw materials into powder particles, mixing them in a certain proportion to form blanks, and then sending them into the mold for pressing and shaping; 2. Pressurization, placing the evenly mixed blanks into the mold and pressurizing them to make molded blanks. The initially formed blanks are relatively fragile and need to be placed carefully and wait for sintering; 3. Sintering, the blanks will be sent to a sintering furnace with strictly controlled environment. The sintering temperature will be set below the melting point of the main raw materials to help the materials diffuse and fuse, so as to strengthen the material structure and form specific mechanical properties; 4. Post-processing, the powder metallurgy process usually produces a finished product after sintering with less post-processing.

[0005] However, the sintered product usually shrinks by about 20%, so in order to ensure product quality, it is necessary to conduct defect detection on the finished product to reduce the hidden dangers caused by defects during use. Powder metallurgy automobile parts will have defects during the processing process and abnormal conditions such as sand holes, scratches, bumps, etc. will appear inside the holes. Manual defect detection is labor-intensive and has low detection efficiency. The existing assembly line visual inspection camera cannot penetrate deep into the aperture, resulting in defects in detection. It is impossible to detect abnormal conditions such as sand holes, scratches, bumps, etc. inside the aperture. The visual inspection camera has weak detection capabilities for smaller defects. Utility Model Content

[0006] The purpose of the utility model is to provide an online detection device for defects of parts used in powder metallurgy automobile parts processing, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] An online defect detection device for powder metallurgy automobile parts processing, comprising a testing platform, a magnetic field detection device for performing defect detection on automobile parts, an in-hole detection device for performing detection inside the holes of automobile parts, and a controller. A support mechanism is provided on one side of the top of the testing platform. The magnetic field detection device includes an eddy current probe, an integrated signal generator and receiver, and a fixing device for fixing the eddy current probe. The eddy current probe is connected to the support mechanism via the fixing device.

[0009] The in-hole detection device includes an optical fiber sensor, an integrated signal generator receiver, and a fixing assembly for fixing the optical fiber sensor. The optical fiber sensor is connected to the supporting mechanism through the fixing assembly.

[0010] As a preferred solution of the present invention, the support mechanism includes a support stand and a slider. The support stand is fixed at one side of the testing platform near the top of the outer edge. A slide groove is vertically opened on the support stand. The slider is slidably connected to the support stand through the slide groove. The slider has a built-in fastening screw that is fastened to the support stand.

[0011] As a preferred solution of the present invention, the fixing device includes a supporting top plate located at the top of the testing platform, one end of the supporting top plate is fixed to the outer wall of one side of the top of the supporting stand, an electric slide rail is arranged parallel to the bottom of the supporting top plate, the bottom of the sliding block of the electric slide rail is connected to a first electric telescopic rod, the bottom output end of the first electric telescopic rod is connected to the eddy current probe through the base, the bottom of the output end of the eddy current probe extends through the base and is located below it, sliding plates are provided on the outer walls of the base on both sides of the eddy current probe for convenient sliding on the outer wall of the part during testing, grooves are provided on the inner walls of the two sliding plates, and the inside of the two grooves are rotatably connected to the detection rolling rollers through a rotating shaft, and the detection rolling rollers roll on the outer wall of the part.

[0012] As a preferred solution of the present invention, the fixing assembly includes a second electric telescopic rod, which is located parallel to the top of the detection platform, and the outer wall of the second electric telescopic rod away from the output end is connected to the slider. The output end of the second electric telescopic rod is connected to a detection probe for detecting the inside of the part hole, and the detection end of the optical fiber sensor is fixed at the end of the detection probe.

[0013] As a preferred solution of the present invention, the eddy current probe and the optical fiber sensor are both electrically connected to the integrated signal generator receiver via wires for transmitting high-frequency signals, and the integrated signal generator receiver is electrically connected to the controller via wires.

[0014] As a preferred solution of the present invention, the controller includes a control main board and a detection display screen located on the top of the control main board, and a defect alarm is electrically connected to the control main board via a wire on the detection display screen.

[0015] As a preferred solution of the present invention, the electric slide rail, the first electric telescopic rod and the second electric telescopic rod are all electrically connected to the control mainboard of the controller through wires.

[0016] As a preferred solution of the present invention, a placement seat for horizontally placing automobile parts is provided on one side of the optical fiber sensor at the bottom of the eddy current probe, and a placement groove is provided on the top of the placement seat.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In response to the problems raised in the background technology, this application uses magnetic field and optical fiber detection methods to detect defects in automotive parts, achieving comprehensive and accurate detection of automotive parts, improving detection efficiency and accuracy, and reducing production and detection costs;

[0019] The eddy current probe is moved on the parts for detection. When an alternating current is passed through the coil of the eddy current probe, an alternating magnetic field is generated. When the eddy current probe approaches the metal workpiece to be inspected, the alternating magnetic field induces eddy currents on the surface of the workpiece. By moving the detection on the parts, if there are defects, cracks or holes in the metal parts, the intensity and distribution of the eddy current field will change, thereby causing changes in the resistance and inductance of the detection coil. The integrated signal generator receiver connected to the eddy current probe receives the signals from the eddy current probe, analyzes these signals to detect defects in the metal material, and sends them to the controller for further data processing, analysis and defect alarm, thereby improving the accuracy and reliability of detection;

[0020] By setting up a fiber optic sensor in conjunction with a detection probe, the detection probe moves the fiber optic sensor deep into the hole inside the part. When the optical signal of the fiber optic sensor is transmitted to the end of the optical fiber and irradiated on the surface of the object being detected, different reflected light will be generated according to the different characteristics of the surface. If there are defects on the inner surface of the part hole, such as sand holes, scratches or bumps, these defects will change the reflection pattern of the light, so that the intensity of the light reflected back to the optical fiber is different from that of the defect-free surface. The integrated signal generator and receiver connected to the fiber optic sensor receives the light signal transmitted back from the optical fiber. Based on the intensity and characteristics of the received light signal, the integrated signal generator and receiver can determine the surface condition inside the hole, including whether there are defects and the type of defects. The light signal received by the controller will be converted into an electrical signal. Further data processing and analysis will identify defects such as sand holes, scratches or bumps on the inner surface of the part hole, and a defect alarm will be issued. This provides an efficient and accurate solution for defect detection inside the holes of metal parts, improves the reliability of detection, and greatly expands the detection range, so that defects hidden deep inside can also be effectively identified and processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the overall side view of the utility model;

[0022] Figure 2 This is a side structural diagram of this utility model;

[0023] Figure 3 This is a side view of the connection between the eddy current probe and the sliding plate of the utility model;

[0024] Figure 4 This is a side view of the connection structure between the fixing device and the eddy current probe of the utility model;

[0025] Figure 5 This is a schematic diagram of the connection side of the optical fiber sensor and the supporting frame of the utility model.

[0026] In the figure: 1. Inspection table; 11. Support stand; 12. Slide groove; 13. Slider; 2. Magnetic field detection equipment; 21. Eddy current probe; 22. Fixing device; 221. Support top plate; 222. Electric slide rail; 223. First electric telescopic rod; 224. Base; 225. Sliding plate; 226. Groove; 227. Roller; 3. In-hole inspection equipment; 31. Fiber optic sensor; 32. Fixing assembly; 321. Second electric telescopic rod; 322. Detection probe; 4. Detection display screen; 41. Defect alarm. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention. Example

[0028] Each device in this application document adopts a conventional model in the prior art, and the control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field, which is common knowledge in this field.

[0029] See also Figure 1-5 The utility model provides a technical solution: an online defect detection device for powder metallurgy automobile parts processing, comprising a detection platform 1, a magnetic field detection device 2 for detecting defects in automobile parts, an in-hole detection device 3 for detecting in-holes of automobile parts, and a controller. A support mechanism is provided on one side of the top of the detection platform 1, and the support mechanism includes a support stand 11 and a slider 13. The support stand 11 is fixed on one side of the detection platform 1 near the top of the outer edge. A slide groove 12 is vertically opened on the support stand 11. The slider 13 is slidably connected to the support stand 11 through the slide groove 12. The slider 13 has a built-in fastening screw that is fastened to the support stand 11; the magnetic field detection device 2 includes an eddy current probe 21, an integrated signal generator receiver And a fixing device 22 for fixing the eddy current probe 21, the eddy current probe 21 is connected to the supporting mechanism through the fixing device 22; the in-hole detection equipment 3 includes an optical fiber sensor 31, an integrated signal generator receiver and a fixing component 32 for fixing the optical fiber sensor 31, the optical fiber sensor 31 is connected to the supporting mechanism through the fixing component 32; the eddy current probe 21 and the optical fiber sensor 31 are both electrically connected to the integrated signal generator receiver through a wire for transmitting high-frequency signals, and the integrated signal generator receiver is electrically connected to the controller through a wire; the controller includes a control main board and a detection display screen 4 located on the top of the control main board, and a defect alarm 41 is electrically connected to the control main board through a wire.

[0030] It should be noted that, in this embodiment, the application of the eddy current and optical fiber detection technology of the present application not only provides a comprehensive and efficient solution for defect detection of automotive parts, but also significantly improves production reliability and economic benefits through highly automated and precise data processing;

[0031] Furthermore, the eddy current probe 21 is moved on the component for detection. When an alternating current is passed through the coil of the eddy current probe 21, an alternating magnetic field is generated. When the eddy current probe approaches the metal workpiece to be inspected, the alternating magnetic field induces eddy currents on the surface of the workpiece. By moving the detection on the component, if there are defects, cracks or holes in the metal component, the intensity and distribution of the eddy current field will change, thereby causing changes in the resistance and inductance of the detection coil. The integrated signal generator receiver connected to the eddy current probe 21 receives signals from the eddy current probe 21, analyzes these signals to detect defects in the metal material, and sends them to the controller for further data processing, analysis and defect alarm, thereby improving the accuracy and reliability of detection. This method is fast and suitable for automated inspection on the production line. The integrated signal generator receiver connected to the eddy current probe can receive and analyze signals from the probe in real time, thereby improving the accuracy and reliability of detection. Real-time signal processing and data analysis enable operators to respond quickly and optimize production processes.

[0032] Furthermore, the combination of the optical fiber sensor 31 and the detection probe 322 enables the sensor to penetrate deep into the holes inside the parts for detection. When the optical signal of the optical fiber sensor 31 is transmitted to the end of the optical fiber and irradiated onto the surface of the object being detected, different reflected lights are generated according to the different characteristics of the surface. If there are defects on the inner surface of the part hole, such as sand holes, scratches or bumps, these defects will change the reflection pattern of the light, so that the intensity of the light reflected back to the optical fiber is different from that of the defect-free surface. The integrated signal generator and receiver connected to the optical fiber sensor 31 receives the optical signal transmitted back from the optical fiber. Based on the intensity and characteristics of the received optical signal, the integrated signal generator and receiver can determine the surface condition inside the hole, including whether there are defects and the type of defects. The optical signal received by the controller will be converted into an electrical signal. After further data processing and analysis, defects such as sand holes, scratches or bumps on the inner surface of the part hole are identified, and a defect alarm is issued. This highly sensitive detection method ensures the effective identification of hidden defects and enhances product quality control.

[0033] Furthermore, the combination of eddy current testing and fiber optic testing technology not only covers all-round testing from the surface to the interior of the part, but also greatly enhances the ability to identify different types of defects. The diversity and complementarity of these technologies provide an effective tool for comprehensive quality assessment of complex parts. Through advanced data processing and analysis algorithms, the system can automatically generate defect alarms and classifications, greatly reducing manual intervention, improving production efficiency and automation levels, while also reducing misjudgments and costs caused by human factors.

[0034] Furthermore, the controller includes a control mainboard and a detection display screen 4 located on the top of the control mainboard. A defect alarm 41 is electrically connected to the control mainboard via a wire. The control mainboard is the brain of the entire detection device. It processes data from the eddy current probe and fiber optic sensor of the detection device through designed circuits and embedded software. After analysis by the control mainboard, this data can generate detailed information about the defects of the detected automotive parts. The control mainboard is also responsible for adjusting the parameters of the detection equipment, such as the sensitivity of the fiber optic sensor, to adapt to different detection requirements and ensure the accuracy of the detection. The detection display screen 4 displays the detection process and results in real time, allowing the operator to intuitively monitor the detection status and evaluate the quality of the parts. This instant feedback mechanism is crucial for quality control of the production line because it can quickly indicate whether there is a problem that needs to be solved immediately. The display screen has a user-friendly interface, allowing the operator to easily interpret the detection results and even perform some basic troubleshooting or adjust the detection parameters to adapt to different situations. Once a defect signal is detected, the control mainboard will immediately process these signals and trigger the alarm. The defect alarm 41 triggers an alarm, notifying the operator to take further action. The instant alarm mechanism ensures the rapid identification and isolation of unqualified products, preventing them from entering the next production link or the market.

[0035] See also Figure 2 、 3, 4 and 5, the fixing device 22 includes a supporting top plate 221 located at the top of the testing table 1, one end of the supporting top plate 221 is fixed to the outer wall of one side of the top of the supporting stand 11, and an electric slide rail 222 is provided parallel to the bottom of the supporting top plate 221, and the bottom of the sliding block of the electric slide rail 222 is connected to a first electric telescopic rod 223, and the bottom output end of the first electric telescopic rod 223 is connected to the eddy current probe 21 through a base 224, and the bottom of the output end of the eddy current probe 21 extends through the base 224 and is located below it, and sliding plates 225 are provided on the outer walls of the base 224 on both sides of the eddy current probe 21 for convenient sliding on the outer wall of the part during detection, and grooves 226 are provided on the inner walls of the two sliding plates 225, and the inside of the two grooves 226 is connected with a detection rolling roller through a rotating shaft. 227, the detection rolling roller 227 rolls on the outer wall of the part; the fixed component 32 includes a second electric telescopic rod 321, the second electric telescopic rod 321 is located parallel to the top of the detection platform 1, the second electric telescopic rod 321 is connected to the slider 13 on the outer wall away from the output end, and the output end of the second electric telescopic rod 321 is connected to a detection probe 322 for detecting the inside of the part hole, and the detection end of the optical fiber sensor 31 is fixed at the end of the detection probe 322; the electric slide rail 222, the first electric telescopic rod 223 and the second electric telescopic rod 321 are all electrically connected to the control motherboard of the controller through wires; a placement seat for horizontally placing automotive parts is provided on one side of the optical fiber sensor 31 at the bottom of the eddy current probe 21, and a placement groove is provided on the top of the placement seat.

[0036] It should be noted that, in this embodiment, when it is necessary to perform defect detection on an automobile part, the automobile part is placed flat in the placement groove opened at the top of the placement seat, and the slider 13 is adjusted according to the position of the hole to be detected in the automobile part so that the detection probe 322 coincides with the position center point of the hole to be detected in the automobile part, the slider 13 is fixed, and the controller is started. At this time, the sliding block on the electric slide rail 222 drives the eddy current probe 21 to move to the top of one end of the automobile part, and the controller controls the first electric telescopic rod 223 to drive the eddy current probe 21 to move downward. The eddy current probe 21 is located at the top of one end of the automobile part, and the rollers 227 on the inner wall of the sliding plate 225 on both sides of the eddy current probe 21 are aligned with the outer wall of the automobile part. The eddy current probe 21 is moved from one end of the auto part to the other end of the auto part, and the roller 227 rolls on the outer wall of the auto part. The eddy current probe 21 induces eddy currents on the surface of the workpiece. By moving the detection on the part, if there are defects, cracks or holes in the metal part, the intensity and distribution of the eddy current field will be changed, thereby causing changes in the resistance and inductance of the detection coil. The integrated signal generator receiver connected to the eddy current probe 21 receives the signals from the eddy current probe 21, analyzes these signals to detect defects in the metal material, and sends them to the controller for further data processing and the defect alarm 41 to trigger an alarm;

[0037] The controller controls the second electric telescopic rod 321, driving the optical fiber sensor 31 at the end of the detection probe 322 to penetrate deep into the hole inside the part for detection. When the optical signal of the optical fiber sensor 31 is transmitted to the end of the optical fiber and irradiated on the surface of the object to be detected, different reflected light will be generated according to the different characteristics of the surface. If there are defects on the inner surface of the part hole, such as sand holes, scratches or bumps, these defects will change the reflection pattern of the light, so that the intensity of the light reflected back to the optical fiber is different from that of the defect-free surface. The integrated signal generator and receiver connected to the optical fiber sensor 31 receives the light signal transmitted back from the optical fiber. According to the intensity and characteristics of the received light signal, the integrated signal generator and receiver can determine the surface condition inside the hole, including whether there are defects and the type of defects. The light signal received by the controller will be converted into an electrical signal, and further data processing and analysis will be carried out to identify defects such as sand holes, scratches or bumps on the inner surface of the part hole. The defect alarm 41 will issue a defect alarm, which not only ensures the efficiency and accuracy of detection, but also greatly improves production safety and product quality through real-time feedback and alarm mechanism.

[0038] The working process of this utility model:

[0039] During use, when it is necessary to perform defect detection on an automobile part, the automobile part is placed flat in the placement groove opened at the top of the placement seat, and the slider 13 is adjusted according to the position of the hole to be detected in the automobile part so that the detection probe 322 coincides with the position center point of the hole to be detected in the automobile part. The slider 13 is fixed and the controller is started. At this time, the sliding block on the electric slide rail 222 drives the eddy current probe 21 to move to the top of one end of the automobile part. The controller controls the first electric telescopic rod 223 to drive the eddy current probe 21 to move downward. The eddy current probe 21 is located at the top of one end of the automobile part, and the rollers 227 on the inner wall of the sliding plate 225 on both sides of the eddy current probe 21 abut against the outer wall of the automobile part. The controller activates the sliding block on the electric slide rail 222 to drive the eddy current probe 21 to move from one end of the automotive component to the other end. The roller 227 rolls on the outer wall of the automotive component. The eddy current probe 21 induces eddy currents on the surface of the workpiece. By moving the detection on the component, if there are defects, cracks or holes in the metal component, the intensity and distribution of the eddy current field will change, thereby causing changes in the resistance and inductance of the detection coil. The integrated signal generator receiver connected to the eddy current probe 21 receives the signals from the eddy current probe 21, analyzes these signals to detect defects in the metal material, and sends them to the controller for further data processing and the defect alarm 41 to trigger an alarm;

[0040] The controller controls the second electric telescopic rod 321, driving the optical fiber sensor 31 at the end of the detection probe 322 to penetrate deep into the hole inside the part for detection. When the optical signal of the optical fiber sensor 31 is transmitted to the end of the optical fiber and irradiated on the surface of the object to be detected, different reflected light will be generated according to the different characteristics of the surface. If there are defects on the inner surface of the part hole, such as sand holes, scratches or bumps, these defects will change the reflection pattern of the light, so that the intensity of the light reflected back to the optical fiber is different from that of the defect-free surface. The integrated signal generator receiver connected to the optical fiber sensor 31 receives the optical signal transmitted back from the optical fiber. According to the intensity and characteristics of the received optical signal, the integrated signal generator receiver can determine the surface state inside the hole, including whether there are defects and the type of defects. The optical signal received by the controller will be converted into an electrical signal, and further data processing and analysis will identify defects such as sand holes, scratches or bumps on the inner surface of the part hole, and the defect alarm 41 will issue a defect alarm.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An online defect detection device for powder metallurgy automobile parts processing, comprising a detection platform (1), a magnetic field detection device (2) for detecting defects in automobile parts, an in-hole detection device (3) for detecting in-hole defects in automobile parts, and a controller, characterized in that: A support mechanism is provided on one side of the top of the detection platform (1); the magnetic field detection device (2) comprises an eddy current probe (21), an integrated signal generating receiver, and a fixing device (22) for fixing the eddy current probe (21); the eddy current probe (21) is connected to the support mechanism via the fixing device (22); The in-hole detection device (3) comprises an optical fiber sensor (31), an integrated signal generating receiver, and a fixing assembly (32) for fixing the optical fiber sensor (31); the optical fiber sensor (31) is connected to the supporting mechanism via the fixing assembly (32).

2. The online defect detection device for powder metallurgy automobile parts processing according to claim 1, characterized in that: The support mechanism includes a support stand (11) and a slider (13), wherein the support stand (11) is fixedly located on one side of the test platform (1) near the top of the outer edge, and a slide groove (12) is vertically provided on the support stand (11), and the slider (13) is slidably connected to the support stand (11) through the slide groove (12), and the slider (13) is built with a fastening screw fastened to the support stand (11).

3. The online defect detection device for powder metallurgy automobile parts processing according to claim 2, characterized in that: The fixing device (22) includes a supporting top plate (221) located on the top of the test bench (1), one end of the supporting top plate (221) is fixed to the outer wall of one side of the top of the supporting stand (11), an electric slide rail (222) is provided in parallel at the bottom of the supporting top plate (221), a first electric telescopic rod (223) is connected to the bottom of the sliding block of the electric slide rail (222), and the bottom output end of the first electric telescopic rod (223) is connected to the eddy current probe (21) through the base (224). The bottom of the output end of the eddy current probe (21) extends through the base (224) and is located below it. Sliding plates (225) are provided on the outer walls of the base (224) on both sides of the eddy current probe (21) for sliding on the outer wall of the part during detection. Grooves (226) are provided on the inner walls of the two sliding plates (225). The insides of the two grooves (226) are connected to detection rolling wheels (227) through rotating shafts, and the detection rolling wheels (227) roll on the outer wall of the part.

4. The online defect detection device for powder metallurgy automobile parts processing according to claim 3, characterized in that: The fixing assembly (32) includes a second electric telescopic rod (321), the second electric telescopic rod (321) is located parallel to the top of the detection platform (1), the outer wall of the second electric telescopic rod (321) away from the output end is connected to the slider (13), the output end of the second electric telescopic rod (321) is connected to a detection probe (322) for detecting the inside of the part hole, and the detection end of the optical fiber sensor (31) is fixed at the end of the detection probe (322).

5. The online defect detection device for powder metallurgy automobile parts processing according to claim 1 is characterized in that: The eddy current probe (21) and the optical fiber sensor (31) are both electrically connected to the integrated signal generator receiver via a wire for transmitting high-frequency signals, and the integrated signal generator receiver is electrically connected to the controller via a wire.

6. The online defect detection device for powder metallurgy automobile parts processing according to claim 1, characterized in that: The controller comprises a control main board and a detection display screen (4) located on the top of the control main board. A defect alarm (41) is electrically connected to the control main board via a wire on the detection display screen (4).

7. The online defect detection device for powder metallurgy automobile parts processing according to claim 3 is characterized by: The electric slide rail (222), the first electric telescopic rod (223), and the second electric telescopic rod (321) are all electrically connected to a control mainboard of the controller via wires.

8. The online defect detection device for powder metallurgy automobile parts processing according to claim 1, characterized in that: A placement seat for horizontally placing automobile parts is provided on one side of the optical fiber sensor (31) at the bottom of the eddy current probe (21), and a placement groove is provided on the top of the placement seat.

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