A wheel hub thread inspection device

Abstract

The present application relates to a wheel hub thread inspection device, which relates to the technical field of thread detection equipment, including a frame, which is distributed in a U shape, and a feeding device and a detection device are arranged on the frame in sequence according to the processing procedures. The detection device includes a workbench, and the workbench is fixedly arranged on the frame. The detection device also includes a direction positioning mechanism, a precision positioning mechanism, an inner flange detection mechanism and an NG mechanism. The direction positioning mechanism, the precision positioning mechanism, the inner flange detection mechanism and the NG mechanism are fixedly arranged on the workbench in sequence. The present application has the technical effect of automatically detecting the thread go / no-go gauge.

Description

Technical Field

[0001] The present application relates to the technical field of thread detection equipment, and in particular to a wheel hub thread inspection equipment. Background Art

[0002] In the process of wheel hub production and processing, some errors will inevitably occur, resulting in various defects in the wheel hub, especially the thread go / no-go gauge of the wheel hub. When the wheel hub is assembled, the thread processing accuracy on the wheel hub affects the normal use of the bearing after assembly. In order to ensure the normal use of the wheel hub after assembly, the quality of the wheel hub thread processing needs to be controlled. Due to the special shape of the wheel hub, in the existing technology, it is often measured and observed manually, resulting in low efficiency. Summary of the invention

[0003] In order to improve the inspection efficiency of wheel hub threads, the present application provides a wheel hub thread inspection device.

[0004] The present application provides a wheel hub thread inspection device, which adopts the following technical solution:

[0005] A wheel hub thread inspection device comprises a frame, the frame is arranged in a U shape, and a feeding device and a detection device are arranged on the frame in sequence according to the processing procedures;

[0006] The detection device comprises a workbench, which is fixedly arranged on the frame, and the detection device further comprises a direction positioning mechanism, a precision positioning mechanism, an inner flange detection mechanism and an NG mechanism, which are fixedly arranged on the workbench in sequence;

[0007] The direction positioning mechanism comprises an outer guide column and an inner positioning plate, the outer guide column is equipped with a laser positioning sensor, three outer guide columns are provided, the three outer guide columns are distributed in a triangular shape, and the inner positioning plate is provided on the inner side of the outer guide column;

[0008] The precise positioning mechanism comprises a positioning column, wherein three positioning columns are provided, and the three positioning columns are distributed in a triangular shape, and the positioning column is provided with a conical end head, and the conical end head is provided in an inverted cone shape;

[0009] The inner flange detection mechanism includes a detection probe, the detection probe is used to detect the go / no-go gauge of the thread, three detection probes are provided, the three detection probes are respectively connected to a motor, and the inner side of the three detection probes is provided with the inner positioning plate;

[0010] The NG mechanism includes a lifting motor, a tray, a pushing motor and a material frame. The workbench and the frame are correspondingly provided with circular through holes. The lifting motor is fixedly arranged on the frame. The tray is fixedly arranged on the output shaft of the lifting motor. The tray can be driven by the lifting motor to pass through the circular through holes of the frame and the workbench. The pushing motor is fixedly arranged on the frame. A material frame is fixedly arranged at the bottom of the frame. The maximum extension of the lifting motor can lift the tray to be level with the workbench. When the lifting motor is contracted to its maximum limit, the tray is level with the pushing motor.

[0011] By adopting the above technical scheme, through the setting of the direction positioning mechanism, the fine positioning mechanism, the inner flange detection mechanism and the NG mechanism, the direction positioning mechanism is used to roughly position the wheel hub, the fine positioning mechanism is used to finely position the wheel hub, the inner flange detection mechanism is used to detect the thread go / no-go gauge of the wheel hub, and the NG mechanism processes whether it is NG according to the detection result, and the wheel hubs that fail the detection are centrally recovered, thereby realizing automatic detection of the wheel hub thread, enabling the equipment to gradually position according to the special shape of the wheel hub, and ultimately improving the accuracy of detection.

[0012] In a specific possible implementation manner, the loading device includes a transport conveyor belt and a single-channel conveyor belt, the transport conveyor belt and the single-channel conveyor belt have opposite transport directions, and the transport conveyor belt and the single-channel conveyor belt are arranged in parallel.

[0013] By adopting the above technical solution, the transport conveyor belt and the single-channel conveyor belt are arranged side by side and in opposite directions, so that the hubs can be sorted and transported, the equipment footprint can be reduced, and the equipment can be miniaturized. By setting the single-channel conveyor belt, the hubs can pass one by one.

[0014] In a specific feasible implementation scheme, a propulsion mechanism is provided at one end of the transport conveyor belt close to the detection device, and the propulsion mechanism includes a spacer seat, and the spacer seat is horizontally placed on the frame. A propulsion cylinder is fixedly provided on the top of the spacer seat, and a push plate is fixedly provided on the output shaft of the propulsion cylinder. The push plate has a notch in the direction away from the propulsion cylinder.

[0015] By adopting the above technical solution and setting the propulsion cylinder, the propulsion cylinder is used to push the wheel hub single-channel conveyor belt onto the workbench.

[0016] In a specific feasible implementation scheme, an oblique baffle is fixedly provided at the end of the transport conveyor belt in the transport direction, the oblique baffle is fixedly provided on the frame, the oblique baffle is arranged to be inclined in the direction away from the single-channel conveyor belt, and a side baffle is fixedly provided on the outer edge of the frame, and the side baffle, the spacer and the oblique baffle enclose the transport conveyor belt and the single-channel conveyor belt inside.

[0017] By adopting the above technical solution and setting the inclined baffle, the wheel hub can be guided to the single-channel conveyor belt through the inclined surface of the inclined baffle, and the side baffle, the spacer seat and the inclined baffle play a limiting role on the wheel hub.

[0018] In a specific feasible implementation scheme, the loading device also includes an adjusting mechanism, the adjusting mechanism includes an adjusting support arm, the adjusting support arm is fixedly arranged on the frame along the length direction of the transport conveyor belt and the one-way conveyor belt, the adjusting support arm is arranged at the separation between the transport conveyor belt and the one-way conveyor belt, a plurality of movable handles are fixedly arranged on the adjusting support arm, the plurality of movable handles are spaced apart along the length direction of the adjusting support arm, one end of the movable handle is fixedly arranged on the adjusting support arm, and a support plate is fixedly arranged on the other end, and the support plate is arranged as a metal plate with a certain length.

[0019] In a specific possible implementation scheme, the movable handle is provided with a long strip through hole for the screw to pass through.

[0020] By adopting the above technical solution and setting the movable handle and the abutment plate, the technical effect of automatic adjustment of the single-channel conveyor belt can be achieved.

[0021] In a specific feasible implementation scheme, a moving device is arranged adjacent to the workbench, and the moving device is fixedly arranged opposite to the direction positioning mechanism, the precision positioning mechanism and the inner flange detection structure. The moving device includes a moving slide rail, and a sliding base is slidably arranged on the moving slide rail, and the sliding base is driven by a cylinder.

[0022] By adopting the above technical solution and setting the moving device, the moving device can move the wheel hub in coordination with the processing steps of the detection device.

[0023] In a specific feasible implementation scheme, the moving device also includes an upper splint and a lower splint, which are slidably stacked, and the bottoms of the upper splint and the lower splint are connected to a hydraulic cylinder, which drives the upper splint and the lower splint to move towards and away from each other.

[0024] By adopting the above technical solution and arranging the upper clamping plate and the lower clamping plate, the clamping function of the wheel hub can be achieved.

[0025] In a specific feasible implementation scheme, a plurality of clamping arms are fixedly arranged at intervals on the upper clamping plate and the lower clamping plate, the clamping arms are staggered to form clamping claws, a clamping block is fixedly arranged on the side of the clamping arm, a circular notch is formed on the clamping block, and a push block is also fixedly arranged on the end of the upper clamping plate.

[0026] By adopting the above technical solution and arranging the push block, the push block is used for cutting the wheel hub.

[0027] In a specific feasible implementation scheme, a fixing plate is fixedly arranged on the workbench, and the fixing plate includes a first fixing plate, a second fixing plate and a third fixing plate, wherein the first fixing plate, the second fixing plate and the third fixing plate are all fixedly arranged with a driving device, and the driving device includes a pneumatic rod, a fixing sleeve and a mounting plate, the fixing sleeve is fixedly arranged on the fixing plate, the pneumatic rod fixing sleeve is arranged on the fixing sleeve, the mounting plate is fixedly connected to the output shaft of the pneumatic rod, a threaded hole is opened on the mounting plate, and the mounting plate plays a connecting and mounting role.

[0028] By adopting the above technical solution and setting the driving device, the driving device is used to detect the direction positioning mechanism, the precision positioning mechanism and the inner flange detection mechanism.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. Through the setting of the detection device, the detection device includes a direction positioning mechanism, a fine positioning mechanism, and an inner flange detection mechanism. The direction positioning mechanism is used to roughly position the position of the wheel hub thread, rotate the wheel hub, and move the screw hole to the position to be detected; the fine positioning mechanism is used to finely position the position of the screw hole, and the inner flange detection mechanism is used to detect the go and no-go gauge of the thread. Through the above settings, automatic detection of the wheel hub screw hole can be realized, which can replace manual labor and improve detection efficiency.

[0031] 2. Through the setting of the loading device, the loading device includes a single-channel conveyor belt and a transport conveyor belt for transporting the wheel hub. The loading device also includes a movable handle for adjusting the size of the single-channel conveyor belt, so that the loading device can adapt to wheel hubs of different sizes, thereby improving the practicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is an overall schematic diagram of an embodiment of the present application;

[0033] Figure 2 and Figure 3 It is a schematic diagram of the specific structure of the feeding device;

[0034] Figure 4 and Figure 5It is a schematic diagram of the specific structure of the detection device.

[0035] Description of reference numerals: 1, frame; 20, push plate; 21, transport conveyor belt; 22, single-channel conveyor belt; 23, inclined baffle; 24, side baffle; 25, adjustment support arm; 26, movable handle; 27, stop plate; 28, spacer seat; 29, thrust cylinder; 3, workbench; 31, drive device; 311, first fixing plate; 312, second fixing plate; 313, third fixing plate; 314, gas pressure rod; 315, fixing sleeve; 316, mounting plate; 322, Rotating motor; 323, round table; 324, outer guide column; 326, inner positioning plate; 331, positioning column; 332, conical end; 341, detection head; 342, motor; 351, lifting motor; 352, tray; 353, pushing motor; 354, material frame; 361, moving slide rail; 362, sliding base; 363, pushing cylinder; 364, lower clamping plate; 3641, pushing block; 365, upper clamping plate; 366, clamping arm; 367, clamping block. DETAILED DESCRIPTION

[0036] The present application is further described in detail below in conjunction with the accompanying drawings.

[0037] In the description of the invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the invention.

[0038] The present application embodiment discloses a wheel hub thread inspection device, referring to Figure 1 , including a frame 1, which is distributed in a U shape, and a feeding device and a detection device are arranged on the frame 1 in sequence according to the processing procedures.

[0039] Reference Figure 2 and Figure 3The feeding device includes a transport conveyor belt 21 and a single-channel conveyor belt 22, which are arranged in parallel. The transport conveyor belt 21 is arranged on a frame 1 at one end away from the detection device, and the single-channel conveyor belt 22 is arranged at an end of the transport conveyor belt 21 close to the detection device. A motor 342 for driving the transport conveyor belt 21 and the single-channel conveyor belt 22 is fixedly arranged on the frame 1. A propulsion mechanism is arranged at the end of the transport conveyor belt 21 close to the detection device. The propulsion mechanism includes a spacer seat 28, and the spacer seat 28 is horizontally placed on the frame 1. To facilitate the normal transportation of the transport conveyor belt 21, the bottom of the spacer seat 28 is arranged at a certain distance from the transport conveyor belt 21. A propulsion cylinder 29 is fixedly arranged on the top of the spacer seat 28. The propulsion cylinder 29 is arranged along the length direction of the spacer seat 28, and the output shaft of the propulsion cylinder 29 is arranged toward the detection device. A push plate 20 is fixedly arranged on the output shaft of the propulsion cylinder 29, and a notch is opened in the direction away from the propulsion cylinder 29, and the notch is matched with the arc surface of the hub. The transporting directions of the transport conveyor belt 21 and the single-channel conveyor belt 22 are opposite, wherein the transport conveyor belt 21 moves in a direction away from the propulsion mechanism, and the single-channel conveyor belt 22 moves in a direction toward the detection device. An inclined baffle 23 is fixedly provided at the end of the transporting direction of the transport conveyor belt 21, and the inclined baffle 23 is fixedly provided on the frame 1, and the inclined baffle 23 is set to be inclined in a direction away from the single-channel conveyor belt 22. A side baffle 24 is fixedly provided on the outer edge of the frame 1, and the side baffle 24, the spacer seat 28 and the inclined baffle 23 surround the transport conveyor belt 21 and the single-channel conveyor belt 22 inside, and play a role of limiting and blocking when the wheel hub is transported. The feeding device also includes an adjusting mechanism, and the adjusting mechanism includes an adjusting support arm 25, which is fixedly provided on the frame 1 along the length direction of the transport conveyor belt 21 and the single-channel conveyor belt 22, and the position of the adjusting support arm 25 is set at the separation of the transport conveyor belt 21 and the single-channel conveyor belt 22. A plurality of movable handles 26 are fixedly provided on the adjustment support arm 25, and the plurality of movable handles 26 are arranged at intervals along the length direction of the adjustment support arm 25. One end of the movable handle 26 is fixedly provided at the end of the adjustment support arm 25 close to the frame 1 by means of screws. A through hole for matching the screws is provided on the movable handle 26, and the through hole is arranged in a strip shape. This arrangement can change the fixed position of the movable handle 26, so that the extension distance of the abutment plate 27 can be adjusted. A abutment plate 27 is fixedly provided at the other end of the movable handle 26, and the abutment plate 27 is arranged as a metal plate with a certain length. The abutment plate 27 is arranged vertically along the width direction. When the extension distance of the abutment plate 27 can be adjusted by the arrangement of the movable handle 26, the width of the single-channel conveyor belt 22 can be changed.

[0040] Reference Figure 4 and Figure 5The detection device includes a workbench 3, which is fixedly arranged on the frame 1. A support leg is arranged at the bottom of the workbench 3, and the support leg props up the workbench 3 to a certain height. The detection device also includes a direction positioning mechanism, a precision positioning mechanism, an inner flange detection mechanism and an NG mechanism. The direction positioning mechanism, the precision positioning mechanism, the inner flange detection structure and the NG mechanism are fixedly arranged on the workbench 3 in sequence. A moving device is arranged adjacent to the workbench 3, and the moving device is fixedly arranged opposite to the direction positioning mechanism, the precision positioning mechanism and the inner flange detection structure. The moving device includes a moving slide rail 361, and the moving slide rail 361 is fixedly arranged on the frame 1. The moving slide rail 361 is arranged along the length direction of the workbench 3. A sliding base 362 is slidably arranged on the moving slide rail 361, and the sliding base 362 is driven by a cylinder to slide on the moving slide rail 361. A push cylinder 363 is fixedly arranged on the sliding base 362, and the push cylinder 363 is used to drive the sliding base 362. The moving device also includes an upper clamp plate 365 and a lower clamp plate 364. The upper clamp plate 365 and the lower clamp plate 364 are vertically stacked and slidingly connected to each other. A hydraulic cylinder is connected to the bottom of the upper clamp plate 365 and the lower clamp plate 364, and the hydraulic cylinder is horizontally placed at the bottom of the upper clamp plate 365 and the lower clamp plate 364. The hydraulic cylinder drives the upper clamp plate 365 and the lower clamp plate 364 to move towards and away from each other. A plurality of clamping arms 366 are fixedly arranged at intervals on the upper clamping plate 365 and the lower clamping plate 364. The clamping arms 366 extend in the direction of the direction positioning mechanism, the precision positioning mechanism and the inner flange detection structure. The clamping arms 366 arranged on the upper clamping plate 365 and the lower clamping plate 364 are all staggered, so that the clamping arms 366 fixed on the upper clamping plate 365 and the lower clamping plate 364 form a group of two clamping jaws. Since the movement directions of the upper clamping plate 365 and the lower clamping plate 364 are different when they act simultaneously, the clamping jaws realize the clamping function. A clamping block 367 is also fixedly arranged on the side of the clamping arm 366, wherein the clamping block 367 corresponding to the upper clamping plate 365 and the clamping block 367 corresponding to the lower clamping plate 364 are arranged in opposite directions, so that the clamping blocks 367 are arranged opposite to each other. A circular arc-shaped notch is opened on the two opposite clamping blocks 367, and the notch is used to adapt to the shape of the hub, so that the clamping of the clamping jaw is more stable when the hub is clamped. A push block 3641 is fixedly provided on one end of the upper clamping plate 365 away from the propulsion mechanism. The push block 3641 is used to cut the wheel hub.

[0041] A fixing plate is fixedly arranged on the workbench 3, and the fixing plate includes a first fixing plate 311, a second fixing plate 312 and a third fixing plate 313, wherein the first fixing plate 311, the second fixing plate 312 and the third fixing plate 313 are all fixedly arranged with a driving device 31, and the driving device 31 includes a gas pressure rod 314, a fixing sleeve 315 and a mounting plate 316. The fixing sleeve 315 is fixedly arranged on the fixing plate, the fixing sleeve 315 of the gas pressure rod 314 is arranged on the fixing sleeve 315, the mounting plate 316 is fixedly connected to the output shaft of the gas pressure rod 314, and a threaded hole is opened on the mounting plate 316, and the mounting plate 316 plays a role of connection and installation.

[0042] The direction positioning mechanism includes an outer guide column 324 and an inner positioning plate 326. The outer guide column 324 has a built-in laser positioning sensor. There are three outer guide columns 324, which are distributed in a triangle. The three outer guide columns 324 correspond to the three threaded holes of the wheel hub, respectively, and provide a standard positioning position for the positions of the threaded holes. The inner positioning plate 326 is arranged on the inner side of the outer guide column 324, and the inner positioning plate 326 is fixed to the bottom of the mounting plate 316 through a connecting column. The inner positioning plate 326 is arranged in a circular shape that matches the inner diameter of the wheel hub.

[0043] A circular through hole is opened at the position of the workbench 3 corresponding to the inner positioning plate 326 to form a table hole, and a rotating motor 322 is fixedly arranged below the table hole. The bottom of the rotating motor 322 is fixedly arranged on the frame 1, and the output shaft of the rotating motor 322 is arranged toward the table hole. A round table 323 is fixedly arranged on the output shaft of the rotating motor 322, and the round table 323 is rotatably arranged in the table hole, and the top of the round table 323 remains level with the workbench 3.

[0044] The thrust cylinder 29 pushes the wheel hub onto the workbench 3, and the clamping claws clamp and carry the wheel hub, and first move the wheel hub onto the round table 323. The driving device 31 drives the mounting plate 316 to move downward, and first extends the inner positioning disk 326 into the inner diameter of the wheel hub. The inner positioning disk 326 is used to position the wheel hub to prevent the wheel hub from moving off track. The rotary motor 322 drives the round table 323 to rotate, and the round table 323 drives the wheel hub to rotate. The laser positioning sensor locates the position of the wheel hub. When the wheel hub is rotated until the threaded holes are aligned with the laser positioning sensors, the received data of the three laser positioning sensors are consistent, which means that the position of the wheel hub is corrected.

[0045] The precision positioning mechanism includes a positioning column 331, and there are three positioning columns 331. The three positioning columns 331 are fixedly arranged on the mounting plate 316. The positioning columns 331 are arranged in a triangular distribution. The positioning columns 331 are arranged at one end close to the workbench 3 with a conical end 332, and the conical end 332 is arranged in an inverted cone shape. The positioning columns 331 can be driven by the driving device 31 to move up and down. The wheel hub detected by the direction positioning mechanism is moved to the bottom of the positioning column 331 by the moving mechanism. Since the laser positioning sensor cannot accurately locate the position of the screw hole, the direction positioning mechanism can only align the direction of the wheel hub and roughly locate the position of the threaded hole. The driving device 31 drives the positioning column 331 to move downward and insert it into the threaded hole. When the conical end 332 contacts the inner wall of the threaded hole, it can change the position of the wheel hub so that the threaded hole reaches the positioning position, thereby accurately locating the position of the threaded hole.

[0046] The inner flange detection mechanism includes a detection probe, which is used to detect the go / no-go gauge of the thread. Three detection probes are provided, and the three detection probes are respectively connected to motors 342, which are used to drive the detection probes to rotate, and the detection probes are fixedly set on the mounting plate 316 through the motors 342. The inner sides of the three detection probes are also provided with inner positioning disks 326, which are fixedly set on the mounting plate 316, and are used to play a positioning role when detecting threaded holes.

[0047] The moving device moves the precisely positioned wheel hub to the inner flange detection mechanism, the driving device 31 drives the detection probe to move downward and insert the detection probe into the threaded hole, and the motor 342 drives the threaded hole to rotate to detect the thread gauge.

[0048] The detection device also includes an NG mechanism, which includes a lifting motor 351, a tray 352, a material pusher motor 353 and a material frame 354. Circular through holes are correspondingly opened on the workbench 3 and the frame 1. The lifting motor 351 is fixedly set on the frame 1, and the tray 352 is fixedly set on the output shaft of the lifting motor 351. The maximum extension of the lifting motor 351 can lift the tray 352 to be level with the workbench 3, and the tray 352 can be driven by the lifting motor 351 to pass through the cylindrical through holes of the frame 1 and the workbench 3. The material pusher motor 353 is fixedly set on the frame 1, and a material frame 354 is set at the bottom of the frame 1. The material frame 354 is used to store unqualified wheel hubs. When the device detects that the wheel hub is unqualified, the moving device automatically moves the wheel hub to the tray 352, and the lifting motor 351 drives the tray 352 to move down to the inside of the frame 1. When the lifting motor 351 is retracted to the maximum limit, the tray 352 and the pushing motor 353 are kept horizontal, and the pushing motor 353 is started to push the hub into the material frame 354 to realize the recovery of unqualified workpieces.

[0049] For the wheel hub that has passed the inspection, the moving device will move the wheel hub to the end of the workbench 3, and during the next clamping action of the upper clamping plate 365 and the lower clamping plate 364, the push block 3641 will be used to push the wheel hub out of the workbench 3 and convey it to the next process via the conveyor belt.

[0050] The implementation principle of the wheel hub thread inspection device of the embodiment of the present application is as follows: the operator needs to pour the wheel hub onto the transport conveyor 21, and the transport conveyor 21 transports the wheel hub toward the direction of the inclined baffle 23, so that the wheel hub moves along the inclined surface of the inclined baffle 23 to the single-channel conveyor 22, and the single-channel conveyor 22 transports the wheel hubs one by one to the propulsion cylinder 29, and the wheel hubs are pushed onto the workbench 3 by the propulsion cylinder 29. The mobile device first moves the wheel hub to the direction positioning mechanism, the fine positioning mechanism, and the inner flange detection mechanism, and completes the rough positioning, fine positioning and thread gauge detection of the wheel hub. For the wheel hub that fails the inspection, the mobile device will move the wheel hub to the tray 352, and for the wheel hub that passes the inspection, the material is unloaded through the push block 3641. For the wheel hub that fails the inspection, it is centrally stored through the NG mechanism.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A wheel hub thread inspection device, characterized in that: It comprises a frame (1), the frame (1) is arranged in a U shape, and a loading device and a detection device are arranged on the frame (1) in sequence according to the processing steps; The detection device comprises a workbench (3), the workbench (3) is fixedly arranged on the frame (1), and the detection device also comprises a direction positioning mechanism, a precision positioning mechanism, an inner flange detection mechanism and an NG mechanism, the direction positioning mechanism, the precision positioning mechanism, the inner flange detection mechanism and the NG mechanism are fixedly arranged on the workbench (3) in sequence; The direction positioning mechanism comprises an outer guide column (324) and an inner positioning disk (326); the outer guide column (324) is provided with a built-in laser positioning sensor; three outer guide columns (324) are provided, and the three outer guide columns (324) are distributed in a triangular shape; the inner positioning disk (326) is provided on the inner side of the outer guide column (324); The precise positioning mechanism comprises a positioning column (331), wherein three positioning columns (331) are provided, and the three positioning columns (331) are distributed in a triangular shape, and the positioning column (331) is provided with a conical end head (332), and the conical end head (332) is arranged in an inverted cone shape; The inner flange detection mechanism comprises a detection probe, the detection probe is used to detect the go / no-go gauge of the thread, three detection probes are provided, the three detection probes are respectively connected to a motor (342), and the inner side of the three detection probes is provided with the inner positioning plate (326); The NG mechanism comprises a lifting motor (351), a tray (352), a material pushing motor (353) and a material frame (354); circular through holes are correspondingly provided on the workbench and the frame (1); the lifting motor (351) is fixedly arranged on the frame (1); the tray (352) is fixedly arranged on the output shaft of the lifting motor (351); the tray (352) can be driven by the lifting motor (351) to pass through the circular through holes of the frame (1) and the workbench; the material pushing motor (353) is fixedly arranged on the frame (1); a material frame (354) is fixedly arranged at the bottom of the frame (1); the maximum extension of the lifting motor (351) can lift the tray (352) to be level with the workbench; when the lifting motor (351) is retracted to its maximum limit, the tray (352) and the material pushing motor (353) are level.

2. A wheel hub thread inspection device according to claim 1, characterized in that: The loading device comprises a transport conveyor belt (21) and a single-channel conveyor belt, the transport conveyor belt (21) and the single-channel conveyor belt (22) have opposite transport directions, and the transport conveyor belt (21) and the single-channel conveyor belt (22) are arranged in parallel.

3. A wheel hub thread inspection device according to claim 2, characterized in that: A propulsion mechanism is provided at one end of the transport conveyor belt (21) close to the detection device, and the propulsion mechanism includes a spacer seat (28), the spacer seat (28) is horizontally placed on the frame (1), a propulsion cylinder (29) is fixedly provided on the top of the spacer seat (28), a push plate (20) is fixedly provided on the output shaft of the propulsion cylinder (29), and a notch is provided on the push plate (20) in a direction away from the propulsion cylinder (29).

4. A wheel hub thread inspection device according to claim 3, characterized in that: An inclined baffle (23) is fixedly provided at the end of the transport conveyor belt (21) in the transport direction, and the inclined baffle (23) is fixedly provided on the frame (1). The inclined baffle (23) is arranged to be inclined in a direction away from the single-channel conveyor belt (22). A side baffle (24) is fixedly provided on the outer edge of the frame (1), and the side baffle (24), the spacer seat (28) and the inclined baffle (23) enclose the transport conveyor belt (21) and the single-channel conveyor belt (22) inside.

5. The wheel hub thread inspection device according to claim 4, characterized in that: The feeding device further comprises an adjusting mechanism, the adjusting mechanism comprising an adjusting arm (25), the adjusting arm (25) being fixedly arranged on the frame (1) along the length direction of the transport conveyor belt (21) and the one-way conveyor belt, the adjusting arm (25) being arranged at the separation between the transport conveyor belt (21) and the one-way conveyor belt, a plurality of movable handles (26) being fixedly arranged on the adjusting arm (25), the plurality of movable handles (26) being arranged at intervals along the length direction of the adjusting arm (25), one end of the movable handle (26) being fixedly arranged on the adjusting arm (25), and a butt plate (27) being fixedly arranged on the other end, the butt plate (27) being arranged as a metal plate having a certain length.

6. The wheel hub thread inspection device according to claim 5, characterized in that: The movable handle (26) is provided with a long strip through hole which matches the screw hole.

7. The wheel hub thread inspection device according to claim 1, characterized in that: A moving device is arranged adjacent to the workbench (3), and the moving device is fixedly arranged opposite to the direction positioning mechanism, the precision positioning mechanism and the inner flange detection structure. The moving device comprises a moving slide rail (361), and a sliding base (362) is slidably arranged on the moving slide rail (361), and the sliding base (362) is driven by a cylinder.

8. The wheel hub thread inspection device according to claim 7, characterized in that: The moving device also includes an upper clamping plate (365) and a lower clamping plate (364), wherein the upper clamping plate (365) and the lower clamping plate (364) are arranged to be slidably stacked, and the bottoms of the upper clamping plate (365) and the lower clamping plate (364) are connected to a hydraulic cylinder, and the hydraulic cylinder drives the upper clamping plate (365) and the lower clamping plate (364) to move toward and away from each other.

9. The wheel hub thread inspection device according to claim 8, characterized in that: A plurality of clamping arms (366) are fixedly arranged at intervals on the upper clamping plate (365) and the lower clamping plate (364), and the clamping arms (366) are staggered to form clamping claws. A clamping block (367) is fixedly arranged on the side of the clamping arm (366), and a circular notch is formed on the clamping block (367). A push block (3641) is also fixedly arranged at the end of the upper clamping plate (365).

10. The wheel hub thread inspection device according to claim 1, characterized in that: A fixing plate is fixedly arranged on the workbench (3), and the fixing plate comprises a first fixing plate (311), a second fixing plate (312) and a third fixing plate (313), wherein the first fixing plate (311), the second fixing plate (312) and the third fixing plate (313) are all fixedly arranged with a driving device (31), and the driving device (31) comprises a pneumatic rod (314), a fixing sleeve (315) and a mounting plate (316), wherein the fixing sleeve (315) is fixedly arranged on the fixing plate, and the fixing sleeve (315) of the pneumatic rod (314) is arranged on the fixing sleeve (315), and the mounting plate (316) is fixedly connected to the output shaft of the pneumatic rod (314), and a threaded hole is opened on the mounting plate (316), and the mounting plate (316) plays a connecting and mounting role.

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