A gear blank inspection device

Abstract

The application discloses a kind of detection devices of gear blank, it is related to ultrasonic testing technical field.The detection device includes positioning frame and fixed frame, the positioning frame includes two supports arranged at an angle, each support is provided with a position sensor, the position sensor can abut the side wall of the gear blank;Fixed frame includes base, the base is provided with detection module, the base is slidably arranged in the positioning frame along the first direction and located between two supports, the detection module is arranged on the base, and the detection module is configured to detect the gear blank.The detection device of the gear blank can improve the positioning accuracy of the detection module, thereby ensuring the accuracy of the detection result.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection equipment, and in particular to a gear blank detection device. BACKGROUND

[0002] In a wind power gear box, gear raw material defects are one of the main factors leading to tooth breakage. In order to detect the internal defects of the gear blank and ensure that its quality meets the requirements, the technology of ultrasonic nondestructive testing is mostly used at present. The principle is to emit ultrasonic waves to the gear blank, and when the ultrasonic waves propagate in the gear blank, the defects encountered will produce signals different from the bottom reflection signals. The time difference of different reflection signals transmitted to the probe is used to judge the size and position of the internal defects of the gear blank.

[0003] From the perspective of positioning technology, the results of traditional ultrasonic manual detection have deviations due to the instability of personnel, and the positioning accuracy cannot meet the requirements, so it is the trend of ultrasonic detection to use a robot to realize automatic detection and automatic positioning.

[0004] With the increasing requirements of users on products, a high-frequency probe needs to be used when detecting the gear blank to ensure accuracy. However, the frequency of the conventional ultrasonic detection probe used at present is inversely proportional to the size, and the small-size probe has higher requirements for positioning accuracy, and the robot is difficult to ensure high-precision positioning in the process of moving the probe due to the lack of positioning-related structure.

[0005] In view of the above problems, a gear blank detection device needs to be developed to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide a gear blank detection device which can improve the positioning accuracy of the detection module and ensure the accuracy of the detection results.

[0007] To achieve this purpose, the present application adopts the following technical solutions:

[0008] A gear blank detection device for detecting a gear blank, comprising:

[0009] A positioning frame comprising two supports arranged at an angle, each of the supports is provided with a position sensor capable of abutting against the side wall of the gear blank;

[0010] A fixing frame comprising a base provided with a detection module, the base is slidingly arranged in the positioning frame along a first direction and located between the two supports, the detection module is arranged on the base, and the detection module is configured to detect the gear blank.

[0011] Preferably, the fixing frame further comprises a quick-change frame, the quick-change frame is detachably connected with the base, and the detection module is arranged on the quick-change frame.

[0012] Preferably, the base comprises a fixing seat, the fixing seat comprises two fixing parts arranged at intervals, a fastener is arranged on one side of each of the fixing parts and is retractable towards the other fixing part, and the quick-change frame is arranged between the two fasteners and is clamped and fixed by the two fasteners.

[0013] Preferably, the quick-change frame comprises a clamping head, clamping parts are protrudingly arranged on the ends of the clamping head and face opposite directions, and the fastener is clamped and matched with the clamping parts.

[0014] Preferably, the base is provided with a guide sleeve, the quick-change frame is provided with a guide column, the guide column is inserted into the guide sleeve and is in sliding abutment with the guide sleeve.

[0015] Preferably, the fixing frame further comprises a protection piece, the protection piece is fixedly arranged on the base, and the end of the protection piece is flush with or lower than the detection surface of the detection module.

[0016] Preferably, the fixing frame comprises two protection pieces, and the two protection pieces are arranged at intervals at the two ends of the detection module.

[0017] Preferably, the detection module is a phased array probe.

[0018] Preferably, the base comprises a top plate, a bottom plate and an adjusting rod, the top plate is slidingly arranged on the bottom plate, the bottom plate is fixedly connected with the adjusting rod, and the adjusting rod is slidingly arranged on the positioning frame in the first direction.

[0019] Preferably, the base further comprises a first elastic piece, and the two ends of the first elastic piece are in abutment with the top plate and the bottom plate, respectively.

[0020] Preferably, the base further comprises a bolt, and the bolt passes through the top plate and the bottom plate to limit the maximum distance between the top plate and the bottom plate.

[0021] Preferably, the detection device further comprises a pressure sensor, the pressure sensor is fixedly connected with the adjusting rod, and the pressure sensor passes through the bottom plate and the top plate and is arranged at an interval from the detection module.

[0022] Preferably, a groove extending in the first direction is formed in the side wall of the adjusting rod, the positioning frame further comprises a sleeve, a screw rod is penetratingly arranged in the side wall of the sleeve, the screw rod is threadedly connected with the sleeve, the sleeve is sleeved outside the adjusting rod, and the screw rod is inserted into the groove and is in abutment with the adjusting rod.

[0023] Preferably, the included angles between the two supports and the first direction are equal in size.

[0024] Preferably, the support is fixedly provided with a fastening sleeve, and the position sensor is arranged through the fastening sleeve and is in interference fit with the fastening sleeve.

[0025] Advantages of the present application:

[0026] The present application provides a gear blank detection device. The detection device can be connected to the end of a mechanical hand, so that the detection device can be moved by the mechanical hand, improving detection efficiency. When the position sensors of the two supports are in contact with the side wall of the gear blank during detection of the gear blank by the detection device, the detection device is successfully positioned, the mechanical hand can stop moving, and detection of the gear blank can begin, greatly improving detection accuracy.

[0027] The detection device can improve the positioning accuracy of the detection module, thereby ensuring the accuracy of the detection result. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic diagram of the gear tooth detection device provided by the present application;

[0029] Figure 2 is a structural schematic diagram of the fixing frame provided by the present application;

[0030] Figure 3 is an exploded view of the fixing frame provided by the present application.

[0031] In the drawings:

[0032] 1, positioning frame; 2, position sensor; 3, fixing frame; 4, pressure sensor;

[0033] 11, support; 12, fastening sleeve; 13, sleeve; 14, screw; 21, probe; 31, base; 32, detection module; 33, quick-change frame; 34, protection piece; 35, probe clamp; 36, adjusting screw;

[0034] 311, fixing seat; 312, guide sleeve; 313, top plate; 314, bottom plate; 315, adjusting rod; 316, first elastic member; 317, bolt; 321, phased array probe; 322, protective film layer; 331, clamping head; 332, clamping part; 333, guide column;

[0035] 3111, fixing part; 3112, fastener; 3151, groove; 3171, nut; 3172, screw. DETAILED DESCRIPTION

[0036] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals and characters throughout the figures denote the same or like elements or features. The embodiments described below are exemplary and are intended to provide examples of the present application, and are not intended to limit the present application.

[0037] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only intended to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0038] Unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" should be understood broadly, for example, it can be fixed connection, or detachable connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] Unless otherwise clearly specified and limited, "on" or "under" of the first feature to the second feature can include that the first feature and the second feature are in direct contact, or the first feature and the second feature are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" of the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" of the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0040] The technical solutions of the present application are further illustrated below in conjunction with the drawings and through specific embodiments.

[0041] Gear material defects in a wind turbine gearbox are one of the main factors leading to gear tooth breakage. At present, we mainly use ultrasonic nondestructive testing technology to detect gear blanks. The principle is that when ultrasonic waves are emitted to the gear blank, the ultrasonic waves will encounter defects in the gear blank and produce signals different from the bottom reflection signals. The time difference of different reflection signals transmitted to the probe is used to determine the size and position of the defects in the gear blank.

[0042] However, as users have higher and higher requirements for products, a high-frequency probe needs to be used to ensure accuracy when detecting gear blanks. However, the frequency of the conventional ultrasonic detection module used at present is inversely proportional to the size of the module, and the positioning accuracy of a small-size probe is relatively high. However, the mechanical hand lacks positioning-related structures, and it is difficult to ensure high-precision positioning during the movement of the probe.

[0043] To solve the above problems, the embodiment provides a gear blank detection device, as shown in Figure 1 The detection device includes a positioning frame 1 and a fixing frame 3. The positioning frame 1 includes two supports 11 arranged at an included angle, and each support 11 is provided with a position sensor 2 capable of abutting against the side wall of the gear blank. The fixing frame 3 includes a base 31 provided with a detection module 32, and the base 31 is movably arranged between the two supports 11 of the positioning frame 1 along a first direction (X direction in the figure), and the detection module 32 is arranged on the base 31. The detection module 32 is configured to detect the gear blank.

[0044] The detection device can be connected to the end of the mechanical hand, so that the detection device can be moved by the mechanical hand, improving the detection efficiency. The gear blank is a cylindrical structure. When the detection device is used to detect the gear blank, when the position sensors 2 of the two supports 11 abut against the side wall of the gear blank, the detection device is successfully positioned, the mechanical hand can stop moving, and the detection of the gear blank can be started, greatly improving the detection accuracy. At the same time, since the base 31 can slide relative to the positioning frame 1 along the first direction, the detection device can detect gear blanks of different sizes according to the modulus of the gear.

[0045] The positioning device not only can realize accurate positioning of the workpiece and improve the detection accuracy, but also is suitable for ultrasonic detection of gear blanks of different moduli, realizes automatic ultrasonic detection technology relying on the mechanical hand, and fills the gap of accurate automatic detection and positioning of gear blanks in the current market.

[0046] Specifically, the position sensors 2 of the two supports 11 are symmetrically arranged relative to the detection module 32.

[0047] The conventional ultrasonic probe emits an ultrasonic beam that is too narrow, and the detection depth covered is short, resulting in low detection efficiency. To solve this problem, the detection module 32 in the embodiment includes a phased array probe 321 and a protective film layer 322. The phased array probe 321 independently emits ultrasonic beams by using a plurality of piezoelectric crystals of the same shape and size. The beams are superimposed in space to form a wave front. Due to the effect of the delay block, the sound beam is detected in different focusing or angle forms. When a defect is encountered, a reflection is generated. The signal receiving module receives and images the scanning results. The protective film layer 322 does not block the propagation of ultrasonic waves, and can also protect the phased array probe 321 from directly contacting the gear blank. As known, when the detection direction of the phased array probe 321 is perpendicular to the side wall of the gear blank, the detection angle is best, and the detection result is most accurate, that is, the detection direction of the phased array probe 321 passes through the axis of the gear blank, and this is the best detection position.

[0048] As shown in Figure 1 The position sensor 2 includes a retractable probe 21, and the probes 21 of each position sensor 2 extend by an equal distance. When the probes 21 of the two position sensors 2 both touch the side wall of the gear blank, the detection device completes positioning, and at this time, the detection module 32 abuts against the side wall of the gear blank. Then, the detection device is moved along the circumferential direction of the gear blank. After one round of detection, the detection device is moved along the axial direction of the gear blank by a distance, and then continues to move along the circumferential direction for detection. When the phased array probe 321 moves from one end of the gear blank to the other end, the detection of one gear blank is completed. In order to prevent missed detection, after the detection module 32 moves along the axial direction of the gear blank each time, it needs to have a certain overlap area with the previous detection range.

[0049] As shown in Figure 1 The bracket 11 is fixedly provided with a fastening sleeve 12, and the position sensor 2 is arranged in the fastening sleeve 12 and is in interference fit with the fastening sleeve 12. When the size of the gear blank to be detected is replaced, the position of the probe 21 of the position sensor 2 also needs to be adjusted according to the size of the gear blank. At this time, the operator can manually adjust the position of the position sensor 2 relative to the fastening sleeve 12, so that the probe 21 can correctly abut against the gear blank.

[0050] Preferably, the included angles between the two brackets 11 and the first direction are equal. At this time, it is only necessary to ensure that the probes of the two position sensors 2 both abut against the side wall of the gear blank, so as to ensure that the detection module 32 is located in the middle of the gear blank, and the detection direction passes through the axis of the gear blank, that is, the best detection position.

[0051] As shown in Figure 1As shown, each bracket 11 is provided with at least two position sensors 2 at intervals along the second direction (Y direction in the figure). The second direction is the axial direction of the gear blank and is perpendicular to the first direction. When at least two position sensors 2 of the same bracket 11 are in contact with the gear blank, it indicates that the detection direction of the detection module 32 is perpendicular to the tooth tip surface of the gear blank and is at the optimal detection angle.

[0052] like Figures 1 to 3 As shown, the mounting bracket 3 also includes a quick-change bracket 33, which is detachably connected to the base 31. The detection module 32 is mounted on the quick-change bracket 33. In this detection device, the detection module 32 is a functional component and is prone to failure during prolonged use. When the detection module 32 fails, or when the phased array probe 321 is not suitable for detecting the gear blank, the quick-change bracket 33 can be quickly disassembled for replacement, which is convenient and efficient.

[0053] Specifically, the base 31 includes a fixed seat 311, which includes two spaced-apart fixing parts 3111. A fastener 3112 is retractably mounted on the side of each fixing part 3111 facing the other fixing part 3111. A quick-change bracket 33 is positioned between the two fasteners 3112 and is secured by them. When the detection module 32 needs to be disassembled, the operator can forcefully pull out the quick-change bracket 33, causing it to press against the fasteners 3112, retracting them into the fixing parts 3111 to unlock. After inserting the quick-change bracket 33 between the two fixing parts 3111, the fasteners 3112 extend out of the fixing parts 3111 and engage with the quick-change bracket 33 from both sides to lock it in place.

[0054] Preferably, a second elastic element is provided inside the fixing base 311. The two ends of the second elastic element abut against the fastener 3112 and the fixing base 311 respectively, so as to drive the fastener 3112 to extend out of the fixing base 311 and provide a locking force for the quick-change bracket 33. Specifically, the second elastic element is a spring.

[0055] like Figure 2 and Figure 3 As shown, the quick-change bracket 33 includes a snap-fit ​​connector 331, with snap-fit ​​portions 332 protruding from both ends of the snap-fit ​​connector 331 in opposite directions. Fasteners 3112 engage with the snap-fit ​​portions 332. During the insertion and removal of the quick-change bracket 33, the snap-fit ​​portions 332 can compress the fasteners 3112, causing the fasteners 3112 to retract into the fixing portion 3111. When the fasteners 3112 are pushed out of the fixing portion 3111 by the second elastic member, they can again engage with the quick-change bracket 332 to complete the fixation.

[0056] However, the fixed connection between the fixed base 311 and the quick-change bracket 33 inevitably has a large gap, causing the detection module 32 to be unstable, thus affecting the accuracy of the detection results. Figure 3To solve this problem, the base 31 is provided with a guide sleeve 312, and the quick-change frame 33 is provided with a guide column 333, which is inserted into the guide sleeve 312 and in sliding abutment with the guide sleeve 312. By virtue of the limiting relationship between the guide column 333 and the guide sleeve 312, the detection module 32 can be kept stable in a direction perpendicular to the first direction, and only when the fastener 3112 is clamped with the clamping portion 332, it can be ensured that the clamping portion 332 will not move in the first direction, so that the detection module 32 can be kept in a stable state.

[0057] As shown in Figures 1 to 3 The fixed frame 3 further includes a probe clamp 35, and the two sides of the detection module 32 are fixed to the probe clamp 35 through adjusting screws 36, respectively. The quick-change frame 33 is fixedly connected with the probe clamp 35, and the guide column 333 is fixedly arranged on the probe clamp 35. When the detection direction of the detection module 32 is not completely perpendicular to the side wall of the gear blank, the adjusting screws 36 can be loosened, the detection module 32 can be finely adjusted, and then the adjusting screws 36 can be tightened. The hole diameter of the screw through hole of the probe clamp 35 is greater than the diameter of the threaded portion of the adjusting screw 6, so as to facilitate fine adjustment of the probe clamp 35.

[0058] As shown in Figures 1 to 3 The fixed frame 3 further includes a protection member 34, which is fixedly arranged on the base 31, and the end of the protection member 34 is flush with or lower than the detection surface of the detection module 32. Since the detection device is controlled by a robot, that is, when the robot is out of control, the detection module 32 is likely to collide with the gear blank and be damaged. At this time, the protection member 34 can share part of the impact force with the detection module 32, thereby protecting the detection module 32. The end of the protection member 34 is lower than the detection surface of the detection module 32, so that the detection module 32 can maintain a certain pressing force when abutting against the side wall of the gear blank, thereby ensuring the detection effect.

[0059] Further, the fixed frame 3 includes two protection members 34, which are arranged at the two ends of the detection module 32. The two protection members 34 can abut against the gear blank from both sides, so that the acting force between the detection module 32 and the gear blank will not exceed the limit of the detection module 32. In the embodiment, the two protection members 34 are located at the two ends of the detection module 32 in the second direction, so that the two protection members 34 can share the force.

[0060] As shown in Figure 1 and Figure 3As shown in the drawings, the base 31 comprises a top plate 313, a bottom plate 314 and an adjusting rod 315, the top plate 313 is slidingly arranged on the bottom plate 314, the bottom plate 314 is fixedly connected with the adjusting rod 315, and the adjusting rod 315 is slidingly arranged on the positioning frame 1 along a first direction. The position of the detection module 32 can be adjusted along the axial direction of the adjusting rod 315, and the adjusting rod 315 and the positioning frame 1 have a guiding effect, which ensures the accuracy of the position adjustment of the detection module 32. The sliding connection between the top plate 313 and the bottom plate 314 can adjust the relative position between the detection module 32 and the position sensor 2, so as to detect gear blanks of different sizes.

[0061] As shown in the drawings, Figures 1 to 3 The base 31 further comprises a first elastic member 316, and the two ends of the first elastic member 316 abut against the top plate 313 and the bottom plate 314 respectively. The first elastic member 316 can push the top plate 313, thereby providing a driving force for the detection module 32 to abut against the gear blank, and the driving force gradually increases with the compression of the first elastic member 316, which can protect the detection module 32.

[0062] It can be understood that the base 31 further comprises a bolt 317, and the bolt 317 passes through the top plate 313 and the bottom plate 314 respectively to limit the maximum distance between the top plate 313 and the bottom plate 314. The bolt 317 can prevent the first elastic member 316 from lifting the top plate 313 away from the bottom plate 314, thereby ensuring the stability of the structure of the detection device. The bolt 317 comprises a screw 3172 and a nut 3171, wherein the screw 3172 passes through the top plate 313 and the bottom plate 314 and is threadedly connected with the nut 3171. In order to ensure that the top plate 313 and the bottom plate 314 are in a parallel state, four bolts 317 are provided, and the four bolts 317 are respectively located at the four corners of the top plate 313 and the bottom plate 314.

[0063] Specifically, the first elastic member 316 is a spring, and in order to maintain the stability of the spring, the spring is sleeved outside the screw 3172.

[0064] As shown in the drawings, Figure 2 and Figure 3 The detection device further comprises a pressure sensor 4, the pressure sensor 4 is fixedly connected with the adjusting rod 315, and the pressure sensor 4 passes through the bottom plate 314 and the top plate 313 and is arranged in a spaced manner with the detection module 32. When the detection module 32 abuts against the tooth top surface of the gear blank, the first elastic member 316 will be compressed, and the top plate 313 will abut against the pressure sensor 4. When the detection value of the pressure sensor 4 is too high, an alarm will be issued and the robot will be stopped immediately, thereby preventing the robot from continuing to move and causing damage to the detection module 32.

[0065] It can be understood that when the size of the gear blank changes, the relative position between the detection module 32 and the position sensor 2 on the two supports 11 needs to be adjusted again, so as to ensure that when the value of the pressure sensor 4 reaches a predetermined value, the probe 21 of the position sensor 2 abuts against the gear blank. It is worth noting that the predetermined value is less than the value that triggers the alarm and makes the robot stop urgently.

[0066] As shown in Figure 1 and Figure 3 The side wall of the adjusting rod 315 is provided with a groove 3151 extending in the first direction, and the positioning frame 1 further comprises a sleeve 13, the side wall of the sleeve 13 is provided with a threaded rod 14 penetratingly arranged, the threaded rod 14 is threadedly connected with the sleeve 13, the sleeve 13 is sleeved outside the adjusting rod 315, the threaded rod 14 is inserted into the groove 3151 and abuts against the adjusting rod 315. The threaded rod 14 can limit the rotation of the adjusting rod 315 relative to the sleeve 13 through the groove 3151, so as to ensure the accuracy of the direction of the detection module 32, and the threaded rod 14 can also abut against the adjusting rod 315 by rotating to fix the relative position of the sleeve 13 and the adjusting rod 315, so as to fix the position of the detection module 32.

[0067] Further, the side wall of the adjusting rod 315 is provided with four grooves 3151, and the adjacent grooves 3151 are equally spaced, and the sleeve 13 is threadedly connected with one threaded rod 14 corresponding to each groove 3151.

[0068] The above is only the preferred embodiment of the present application, and for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range can be changed, and the content of the description should not be understood as the limitation of the present application.

Claims

1. A device for inspecting gear blanks, used for inspecting gear blanks, characterized in that, include: Positioning frame (1), the positioning frame (1) includes two brackets (11) arranged at an angle, each bracket (11) is provided with a position sensor (2), the position sensor (2) can abut against the side wall of the gear blank; The fixing frame (3) includes a base (31), the base (31) is provided with a detection module (32), the base (31) is slidably disposed on the positioning frame (1) along a first direction and located between the two supports (11), the detection module (32) is disposed on the base (31), and the detection module (32) is configured to detect the gear blank; The base (31) includes a top plate (313), a bottom plate (314), and an adjusting rod (315). The top plate (313) is slidably disposed on the bottom plate (314). The bottom plate (314) is fixedly connected to the adjusting rod (315). The adjusting rod (315) is slidably disposed on the positioning frame (1) along the first direction. The base (31) also includes a first elastic member (316). The two ends of the first elastic member (316) respectively abut against the top plate (313) and the bottom plate (314). The base (31) also includes a bolt (317). The bolt (317) passes through the top plate (313) and the bottom plate (314) respectively to limit the maximum distance between the top plate (313) and the bottom plate (314). The detection device also includes a pressure sensor (4), which is fixedly connected to the adjusting rod (315). The pressure sensor (4) passes through the bottom plate (314) and the top plate (313) and is spaced apart from the detection module (32).

2. The gear blank inspection device according to claim 1, characterized in that, The fixed frame (3) also includes a quick-change frame (33), which is detachably connected to the base (31), and the detection module (32) is disposed on the quick-change frame (33).

3. The gear blank inspection device according to claim 2, characterized in that, The base (31) includes a fixed seat (311), the fixed seat (311) includes two fixed parts (3111) spaced apart, and a fastener (3112) is telescopically provided on the side of the fixed part (3111) facing the other fixed part (3111). The quick-change bracket (33) is disposed between the two fasteners (3112) and is snapped and fixed by the two fasteners (3112).

4. The gear blank inspection device according to claim 3, characterized in that, The quick-change bracket (33) includes a snap-fit ​​connector (331), and the ends of the snap-fit ​​connector (331) are provided with snap-fit ​​portions (332) protruding in opposite directions. The fastener (3112) engages with the snap-fit ​​portions (332).

5. The gear blank inspection device according to claim 2, characterized in that, The base (31) is provided with a guide sleeve (312), and the quick-change frame (33) is provided with a guide post (333). The guide post (333) is inserted into the guide sleeve (312) and slides against the guide sleeve (312).

6. The gear blank inspection device according to claim 1, characterized in that, The fixing frame (3) also includes a protective component (34), which is fixedly mounted on the base (31), and the end of the protective component (34) is flush with or lower than the detection surface of the detection module (32).

7. The gear blank inspection device according to claim 6, characterized in that, The mounting bracket (3) includes two protective components (34), which are spaced apart at both ends of the detection module (32).

8. The testing device for gear blanks according to any one of claims 1 to 7, characterized in that, The detection module (32) is a phased array probe.

9. The gear blank inspection device according to claim 1, characterized in that, The side wall of the adjusting rod (315) is provided with a groove (3151) extending along the first direction. The positioning frame (1) also includes a sleeve (13). A screw (14) is provided through the side wall of the sleeve (13). The screw (14) is threadedly connected to the sleeve (13). The sleeve (13) is sleeved outside the adjusting rod (315). The screw (14) is inserted into the groove (3151) and abuts against the adjusting rod (315).

10. The testing device for gear blanks according to any one of claims 1 to 7, characterized in that, The two supports (11) are at the same angle to the first direction.

11. The testing device for gear blanks according to any one of claims 1 to 7, characterized in that, The bracket (11) is fixedly provided with a fastening sleeve (12), and the position sensor (2) passes through the fastening sleeve (12) and is interference-fitted with the fastening sleeve (12).

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