An intelligent detection device and method for surface defects of a workpiece

Abstract

The application relates to the technical field of machining part surface flaw detection, in particular to a machining part surface flaw intelligent detection device and a detection method; a machine body is provided with a rack at the upper end; an image collector and an irradiation lamp are arranged between the rack and the machine body; the image collector and the irradiation lamp are connected with the rack; a mounting groove is formed in the upper end of the machine body; a mounting frame is arranged in the mounting groove; through cooperation of the sliding blocks and the rollers, the two sliding blocks at the larger end of the motor shaft drive the two rollers to move away from each other, the larger end of the two ends of the motor shaft is lowered, the motor shaft in the inclined state is continuously adjusted to the horizontal state, so that the light emitted by the irradiation lamp can uniformly irradiate the surface of the motor shaft in the process of rotation of the motor shaft, local areas on the surface of the motor shaft are prevented from being too dark or too bright, the surface flaws of the motor shaft are more clearly visible, and the detection precision of the motor shaft is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of surface flaw detection of workpieces, in particular to a surface flaw intelligent detection device and method for workpieces. BACKGROUND

[0002] A workpiece refers to a manufacturing part with specific shape, size, surface quality and precision requirements, which is manufactured through cutting, extruding, forging, casting and other machining processes of raw materials by machining processes (including mechanical machining, thermal machining, chemical machining, etc.); The motor shaft is a component manufactured by mechanical machining. As a workpiece, it needs to be detected for surface flaws after production to avoid scratches, cracks, pits and other flaws on the surface of the motor shaft, which increases the friction and causes the wear to intensify, thereby affecting the efficiency and service life of the motor.

[0003] The existing motor shaft needs to be rotated for surface detection; however, the diameters of the two ends of the motor shaft are different, which makes the motor shaft in an inclined state during rotation. The visual detection system usually needs uniform light source to illuminate the surface of the detected object. When the motor shaft is inclined, the surface illumination will be uneven, that is, some areas will become too dark or too bright, which affects the appearance and detection of flaws, thereby affecting the detection accuracy.

[0004] In view of this, in order to overcome the above technical problems, the present application provides a surface flaw intelligent detection device and method for workpieces, which solves the above technical problems. SUMMARY

[0005] In order to make up for the shortcomings of the prior art, the present application provides a surface flaw intelligent detection device and method for workpieces. The present application makes the two rollers driven by the two sliders at the larger end of the motor shaft move away from each other, so that the larger end of the motor shaft is lowered, and the inclined motor shaft is continuously adjusted to a horizontal state. Therefore, during the rotation of the motor shaft, the light emitted by the irradiation lamp can uniformly illuminate the surface of the motor shaft, avoiding the local area of the motor shaft surface being too dark or too bright, so as to ensure that the surface flaws of the motor shaft are more clearly visible, thereby improving the detection accuracy of the motor shaft.

[0006] The technical scheme adopted by the present application to solve its technical problems is: the machining surface flaw intelligent detection device, comprising a machine body, a rack is fixedly connected to the upper end of the machine body, an image collector and an irradiation lamp are arranged between the rack and the machine body, the image collector and the irradiation lamp are connected with the rack, an installation groove is formed in the upper end of the machine body, an installation frame is arranged in the installation groove, a connecting shaft is rotatably connected between the installation frame and the machine body, a transmission belt is wound around the surface of the connecting shaft, a drive motor is fixedly installed on one side of the machine body, the drive motor is used to drive the connecting shaft to rotate, a U-shaped plate is installed on the surface of the installation frame, the U-shaped plate is fixedly connected with the transmission belt, the U-shaped plate and the installation frame are in rolling contact through a roller, a screw rod is rotatably connected to the end of the U-shaped plate away from the installation frame, the screw rods are oppositely threaded at the two ends, sliding blocks are threadedly connected to the two ends of the screw rod, rollers are rotatably connected to the upper end of the sliding blocks, two distance sensors are fixedly connected to the lower end of the rack, a drive unit is installed on one side of the machine body, and the drive unit is used to drive the screw rod to rotate.

[0007] Preferably, two drive gears are arranged on the two sides of the installation frame, the drive gears are fixedly connected with the connecting shaft, the transmission belt is arranged around the surfaces of the two drive gears on the same side of the installation frame, and the inner wall of the transmission belt is provided with a gear slot.

[0008] Preferably, the drive unit comprises a servo motor, a recess is formed in the output end of the servo motor, a bevel gear shaft is slidably connected in the recess, the bevel gear shaft and the groove bottom of the recess are connected through a supporting spring, an electromagnetic sheet is inlaid in the groove bottom of the recess, and a bevel gear ring is fixedly connected to one end of the screw rod.

[0009] Preferably, a through groove is formed in the surface of the U-shaped plate, the sliding blocks are slidably connected in the through groove, a transmission gear is rotatably connected to one side of the sliding block, the transmission gear and the roller are connected through a belt transmission, a rotating unit is installed on the upper end of the machine body, and the rotating unit is used to drive the roller to rotate.

[0010] Preferably, the rotating unit comprises a rotating gear, a stepping motor is arranged between the installation frame and the U-shaped plate, the stepping motor is fixedly connected with the installation frame, the rotating gear is slidably connected to the output shaft of the stepping motor, a connecting spring is sleeved on the output shaft of the stepping motor, an electromagnetic ring is fixedly connected to the surface of the output shaft of the stepping motor, one end of the connecting spring is connected with the stepping motor, and the other end is connected with the electromagnetic ring.

[0011] Preferably, the rotating unit comprises a rack, the rack is fixedly connected to the upper end of the machine body, and the rack is engaged with the transmission gear.

[0012] Preferably, a strip-shaped groove is formed in the surface of the roller, and the roller is made of fluorine rubber material.

[0013] A machining workpiece surface flaw intelligent detection method, the method is suitable for the machining workpiece surface flaw intelligent detection device, the steps of the method are as follows:

[0014] S1: workpiece placement: first, the motor shaft to be detected is placed on the roller of the U-shaped plate, the larger end of the two ends of the motor shaft is close to the servo motor, then the driving motor is controlled to drive the transmission belt to rotate, so that the transmission belt drives the U-shaped plate into the rack;

[0015] S2: workpiece adjustment: when the U-shaped plate enters the rack and is located directly below the distance sensor, the driving motor is controlled to stop, at the same time, the electromagnetic ring is controlled to be powered off, so that the bevel gear shaft is engaged with the bevel gear ring under the push of the supporting spring, at this time, the servo motor is controlled to operate, the servo motor drives the screw to rotate, so that the screw drives the two adjacent rollers to move away, so as to adjust the motor shaft to a horizontal state;

[0016] S3: image acquisition A: after the motor shaft is adjusted to a horizontal state, the driving motor is controlled to drive the U-shaped plate to be directly below the image collector, at this time, the electromagnetic ring is controlled to be powered off, so that the rotating gear is engaged with the transmission gear, at the same time, the stepping motor is controlled to operate, so that the stepping motor drives the transmission gear to rotate through the rotating gear, so that the transmission gear drives the motor shaft to rotate through the roller, finally, the image collector is controlled to collect the image of the rotating motor shaft.

[0017] Image acquisition B: after the motor shaft is adjusted to a horizontal state, the driving motor is controlled to drive the U-shaped plate to be close to the image collector, until the transmission gear is in contact with the rack, the transmission gear rolls on the upper end of the rack, so that the transmission gear drives the motor shaft to rotate through the roller, at this time, the image collector is started and collects the image of the rotating motor shaft.

[0018] S4: detection: after the image collector collects the image of the surface of the motor shaft, the image collector directly uploads the collected image to the cloud and compares it with the image of the intact motor shaft, when it is detected that there is a flaw on the surface of the motor shaft, the cloud will send a signal to the alarm in time, and trigger the alarm to remind the relevant personnel to recycle and process it.

[0019] The beneficial effects of the present application are as follows:

[0020] 1. The present application cooperates the slider and the roller, so that the two sliders at the larger end of the motor shaft drive the two rollers to move away from each other, so that the larger end of the two ends of the motor shaft is lowered, so that the inclined motor shaft is continuously adjusted to a horizontal state, so that the light emitted by the irradiation lamp can uniformly irradiate the surface of the motor shaft during the rotation of the motor shaft, avoiding that the local area of the surface of the motor shaft is too dark or too bright, so as to ensure that the surface flaw of the motor shaft is more clearly visible, thereby improving the detection accuracy of the motor shaft.

[0021] 2. The present application sets the matching between the rack and the transmission gear, so that the rack can drive the roller to rotate through the transmission gear, without using additional motor to drive the transmission gear to rotate, on the one hand, reduces the frequency of maintenance and replacement of the motor, thereby reducing the maintenance cost, on the other hand, reduces the operating cost caused by power consumption, and thus improves the overall economic benefit. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application is further illustrated below in conjunction with the drawings and embodiments.

[0023] Figure 1 is a perspective view of the present application;

[0024] Figure 2 is Figure 1 is an enlarged view of A in FIG. 1;

[0025] Figure 3 is a partial sectional view of the servo motor used in the present application;

[0026] Figure 4 is Figure 3 is an enlarged view of B in FIG. 1;

[0027] Figure 5 is Figure 3 is an enlarged view of C in FIG. 1;

[0028] Figure 6 is a partial sectional view of the present application installed with a stepping motor;

[0029] Figure 7 is Figure 6 is an enlarged view of D in FIG. 1;

[0030] Figure 8 is a flow chart of the method of the present application;

[0031] In the figure: 1, machine body; 11, rack; 111, image collector; 112, illumination lamp; 113, distance sensor; 12, mounting groove; 121, connecting shaft; 122, transmission belt; 123, drive motor; 124, drive gear; 125, tooth groove; 13, mounting frame; 131, U-shaped plate; 132, roller; 133, screw; 134, sliding block; 135, roller; 136, bevel gear ring; 137, through groove; 138, transmission gear; 139, belt; 14, servo motor; 141, groove; 142, bevel gear shaft; 143, support spring; 144, electromagnetic sheet; 15, rotating gear; 151, stepping motor; 152, connecting spring; 153, electromagnetic ring; 16, rack; 161, strip-shaped groove. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0033] As shown in Figures 1 to 8 The machining part surface flaw intelligent detection device provided by the present application includes the following embodiments:

[0034] Embodiment 1: A machining part surface flaw intelligent detection device includes a machine body 1, the upper end of the machine body 1 is fixedly connected with a rack 11; an image collector 111 and an irradiation lamp 112 are arranged between the rack 11 and the machine body 1; the image collector 111 and the irradiation lamp 112 are connected with the rack 11, and a mounting groove 12 is formed in the upper end of the machine body 1; a mounting bracket 13 is arranged in the mounting groove 12; a connecting shaft 121 is rotatably connected between the mounting bracket 13 and the machine body 1; a transmission belt 122 is wound around the surface of the connecting shaft 121; a drive motor 123 is fixedly installed on one side of the machine body 1; the drive motor 123 is used to drive the connecting shaft 121 to rotate; a U-shaped plate 131 is installed on the surface of the mounting bracket 13; the U-shaped plate 131 is fixedly connected with the transmission belt 122; the U-shaped plate 131 and the mounting bracket 13 are in rolling contact through a roller 132; a screw rod 133 is rotatably connected to one end of the U-shaped plate 131 away from the mounting bracket 13; the threads on the two ends of the screw rod 133 are oppositely arranged; a sliding block 134 is threadedly connected to the two ends of the screw rod 133; a roller 135 is rotatably connected to the upper end of the sliding block 134; two distance sensors 113 are fixedly connected to the lower end of the rack 11; a drive unit is installed on one side of the machine body 1; the drive unit is used to drive the screw rod 133 to rotate.

[0035] As an embodiment of the present application, two drive gears 124 are arranged on both sides of the mounting bracket 13; the drive gears 124 are fixedly connected with the connecting shaft 121; the transmission belt 122 is wrapped around the surfaces of the two drive gears 124 on the same side of the mounting bracket 13; a tooth groove 125 is formed in the inner wall of the transmission belt 122; the drive gears 124 are engaged with the tooth groove 125.

[0036] As an embodiment of the present application, the drive unit includes a servo motor 14; a recess 141 is formed in the output end of the servo motor 14; a bevel gear shaft 142 is slidably connected in the recess 141; the bevel gear shaft 142 and the groove bottom of the recess 141 are connected through a supporting spring 143; an electromagnetic sheet 144 is inlaid in the groove bottom of the recess 141; a bevel gear ring 136 is fixedly connected to one end of the screw rod 133.

[0037] As one of the embodiments of the present application, the U-shaped plate 131 is provided with a through groove 137; the sliding block 134 is slidingly connected in the through groove 137; one side of the sliding block 134 is rotatably connected with a transmission gear 138; the transmission gear 138 and the roller 135 are connected through a belt 139; the rotating unit is installed on the upper end of the machine body 1; the rotating unit is used to drive the roller 135 to rotate.

[0038] As one of the embodiments of the present application, the rotating unit comprises a rotating gear 15; the mounting frame 13 and the U-shaped plate 131 are provided with a stepping motor 151; the stepping motor 151 is fixedly connected with the mounting frame 13; the rotating gear 15 is slidingly connected on the output shaft of the stepping motor 151; the output shaft of the stepping motor 151 is sleeved with a connecting spring 152; the surface of the output shaft of the stepping motor 151 is fixedly connected with an electromagnetic ring 153; one end of the connecting spring 152 is connected with the stepping motor 151, and the other end is connected with the electromagnetic ring 153.

[0039] In work, the existing motor shaft needs to rotate for surface detection; however, the diameters of the two ends of the motor shaft are different, which makes the motor shaft in an inclined state in the rotating process, and the visual detection system usually needs uniform light source to illuminate the surface of the detected object, when the motor shaft is inclined, the surface illumination will be uneven, that is, some areas will become too dark or too bright, which affects the appearance and detection of defects, thereby affecting the detection accuracy.

[0040] In view of this, the present application cooperates the sliding block 134 with the roller 135, so that the two sliding blocks 134 at the larger end of the motor shaft drive the two rollers 135 to move away from each other, so that the larger end of the two ends of the motor shaft is lowered, so that the inclined motor shaft is continuously adjusted to the horizontal state, so that the light emitted by the irradiation lamp 112 can uniformly illuminate the surface of the motor shaft in the rotating process of the motor shaft, avoiding that the local area of the surface of the motor shaft is too dark or too bright, so as to ensure that the defects on the surface of the motor shaft are more clearly visible, thereby improving the detection accuracy of the motor shaft.

[0041] In use, the user places the motor shaft on the U-shaped plate 131 so that the two ends of the motor shaft are located on the rollers 135 mounted on the U-shaped plate 131, at this time, the larger end of the two ends of the motor shaft is close to the servo motor 14, since two groups of rollers 135 are mounted on the upper end of the U-shaped plate 131, so the two ends of the motor shaft are located on the upper end of the two groups of rollers 135, since each group of rollers 135 is provided with two, so that the two ends of the motor shaft are located between the two rollers 135 of each group, so that the two rollers 135 of each group are in rolling contact with the motor shaft, because the diameters of the two ends of the motor shaft are different, so the motor shaft located on the two groups of rollers 135 is in an inclined state, at this time, the control driving motor 123 is operated, so that the driving motor 123 can drive the connecting shaft 121 to rotate, so that the connecting shaft 121 drives the transmission belt 122 to wrap between the two connecting shafts 121 through the driving gear 124, so that the transmission belt 122 drives the U-shaped plate 131 connected therewith to move synchronously, so that the U-shaped plate 131 moves to the rack 11 under the drive of the transmission belt 122.

[0042] Since the motor shaft includes shaft heads and a middle section, wherein the shaft heads are located at both ends of the motor shaft, the diameters of the two shaft heads are different, and the middle section is located in the middle of the motor shaft and is the part of the motor shaft with constant diameter and is usually used to transmit torque, when the transmission belt 122 drives the U-shaped plate 131 to enter the rack 11, the electromagnet sheet 144 is powered and adsorbs the bevel gear shaft 142 to extrude the supporting spring 143 into the groove 141, when the U-shaped plate 131 drives the motor shaft to be directly below the distance sensor 113 (infrared distance sensor 113), since the distance sensor 113 is provided with two, so that the infrared rays emitted by the two distance sensors 113 irradiate the inclined middle section of the motor shaft, since the motor shaft is in an inclined state at this time, the middle section of the motor shaft is also in an inclined state, so that the distances between the two distance sensors 113 and the surface of the motor shaft are not the same, at this time the electromagnet sheet 144 is powered off, so that the electromagnet sheet no longer generates adsorption force on the bevel gear shaft 142, so that the bevel gear shaft 142 is pushed out of the groove 141 by the restoring force of the supporting spring 143 and continuously approaches the bevel gear ring 136 until the bevel gear shaft 142 and the bevel gear ring 136 are in contact and engaged, at this time the servo motor 14 is controlled to operate, so that the servo motor 14 can drive the bevel gear shaft 142 connected thereto to rotate, so that the bevel gear shaft 142 can drive the bevel gear ring 136 engaged therewith to rotate, so that the bevel gear ring 136 can drive the screw rod 133 fixedly connected thereto to rotate, since the larger end of the two ends of the motor shaft is close to the servo motor 14, the distance sensor 113 close to the servo motor 14 senses that the distance between it and the motor shaft is smaller, therefore, when the screw rod 133 rotates, the screw rod 133 drives the sliding block 134 to move away from each other, so that the screw rod 133 can drive the sliding block 134 to drive the rollers 135 to move away from each other, so that the distance between the two rollers 135 increases, at this time the motor shaft made of the two rollers 135 continuously descends until the two distance sensors 113 sense that the distance between them and the motor shaft is the same, at this time the middle section of the motor shaft is in a horizontal state, the electromagnet sheet 144 is powered on, so that the electromagnet sheet 144 adsorbs the bevel gear shaft 142 to extrude the supporting spring 143 into the groove 141.

[0043] When the motor shaft is in a horizontal state, the control drive motor 123 drives the connecting shaft 121 to rotate, so that the connecting shaft 121 drives the transmission belt 122 to drive the U-shaped plate 131 to continuously approach the image collector 111, at the same time, the control electromagnetic ring 153 is powered on, so that the electromagnetic ring 153 generates magnetic adsorption force to adsorb the rotating gear 15, extruding the connecting spring 152 to approach the stepping motor 151, until the U-shaped plate 131 is located directly below the image collector 111, the control irradiation lamp 112 emits light to irradiate on the surface of the motor shaft, at this time the image collector 111 collects the image of the surface of the motor shaft, at this time the transmission gear 138 is opposite to the rotating gear 15, since the transmission gear 138 and the rotating gear 15 are both set as bevel gears, the control electromagnetic ring 153 is powered off, so that the electromagnetic ring 153 no longer generates magnetic adsorption force to the rotating gear 15, so that the rotating gear 15 is driven away from the stepping motor 151 and approaches the transmission gear 138 under the pushing of the restoring force of the connecting spring 152, until the rotating gear 15 is engaged with the transmission gear 138, at this time the control stepping motor 151 is operated, so that the stepping motor 151 can drive the transmission gear 138 to rotate through the rotating gear 15, so that the transmission gear 138 drives the roller 135 connected with it through the belt 139 to rotate, so that the roller 135 drives the motor 123 shaft to rotate through the static friction force between it and the motor shaft, so that the image collector 111 can collect the image of the surface of the motor shaft, and the collected image is uploaded to the cloud for comparison with the image of the intact motor shaft, so as to detect whether there is crack, scratch and other defect problems on the surface of the motor shaft.

[0044] The difference between example 2 and example 1 is that:

[0045] The rotating unit comprises a rack 16; the rack 16 is fixedly connected to the upper end of the machine body 1; the rack 16 is engaged with the transmission gear 138.

[0046] As an embodiment of the present application, the surface of the roller 135 is provided with a strip-shaped groove 161; the roller 135 is made of fluorine rubber material.

[0047] When working, the transmission gear 138 is arranged as a straight gear, when the motor shaft is adjusted to be horizontal, the control driving motor 123 drives the U-shaped plate 131 to continuously approach the rack 16, so that the U-shaped plate 131 drives the transmission gear 138 at the lower end to contact the rack 16, so that the transmission gear 138 is engaged with the rack 16, with the movement of the U-shaped plate 131, the rack 16 can drive the transmission gear 138 to rotate, so that the transmission gear 138 can drive the roller 135 connected with it to rotate, so that the rotating roller 135 can drive the motor shaft to rotate through the static friction force between the roller 135 and the surface of the motor shaft, so that the image collector 111 can collect the image of the rotating motor shaft surface, the cooperation between the rack 16 and the transmission gear 138 is arranged, so that the rack 16 can drive the roller 135 to rotate through the transmission gear 138, thereby avoiding the use of an additional motor to drive the transmission gear 138 to rotate, on the one hand, the frequency of maintenance and replacement of the motor is reduced, thereby reducing the maintenance cost, on the other hand, the operation cost caused by power consumption is reduced, thereby improving the overall economic benefit.

[0048] By opening the strip-shaped groove 161 on the surface of the roller 135, the roughness of the surface of the roller 135 is increased, so that the static friction force between the roller 135 and the motor shaft is increased, thereby avoiding the slipping problem between the roller 135 and the motor shaft, and ensuring that the roller 135 can drive the motor 123 shaft to rotate stably, and the roller 135 is made of fluorine rubber material, which improves the friction coefficient of the surface of the roller 135, and on the other hand, the roller 135 has the characteristics of corrosion resistance and wear resistance, so that the service life of the roller 135 is improved.

[0049] A kind of machining piece surface flaw intelligent detection method, the method is applicable to the machining piece surface flaw intelligent detection device described above, the steps of the method are as follows:

[0050] S1: workpiece placement: first, the motor shaft to be detected is placed on the roller 135 of the U-shaped plate 131, so that the larger one of the two ends of the motor shaft is close to the servo motor 14, then the driving motor 123 is controlled to drive the transmission belt 122 to rotate, so that the transmission belt 122 drives the U-shaped plate 131 to enter the rack 11;

[0051] S2: workpiece adjustment: when the U-shaped plate 131 enters the rack 11 and is located directly below the distance sensor 113, the driving motor 123 is controlled to stop, at the same time, the electromagnetic ring 153 is controlled to be powered off, so that the bevel gear shaft 142 is engaged with the bevel gear ring 136 under the pushing of the supporting spring 143, at this time, the servo motor 14 is controlled to operate, the servo motor 14 drives the screw rod 133 to rotate, so that the screw rod 133 drives the two adjacent rollers 135 to move away, to adjust the motor shaft to be horizontal;

[0052] S3: image collection A; after the motor shaft is adjusted to a horizontal state, the driving motor 123 is controlled to drive the U-shaped plate 131 to be directly below the image collector 111, at this time, the electromagnetic ring 153 is powered off, the rotating gear 15 is engaged with the transmission gear 138, at the same time, the stepping motor 151 is controlled to run, so that the stepping motor 151 drives the transmission gear 138 to rotate through the rotating gear 15, the transmission gear 138 drives the motor shaft to rotate through the roller 135, finally, the image collector 111 collects the image of the rotating motor shaft.

[0053] Image collection B: after the motor shaft is adjusted to a horizontal state, the driving motor 123 is controlled to drive the U-shaped plate 131 to be close to the image collector 111, until the transmission gear 138 is in contact with the rack 16 and engaged, the transmission gear 138 rolls on the upper end of the rack 16, so that the transmission gear 138 drives the motor shaft to rotate through the roller 135, at this time, the image collector 111 is started and collects the image of the rotating motor shaft.

[0054] S4: detection: after the image collector 111 collects the image of the surface of the motor shaft, the image collector 111 directly uploads the collected image to the cloud and compares it with the image of the intact motor shaft, when it is detected that there are defects on the surface of the motor shaft, the cloud will send a signal to the alarm immediately, and trigger the alarm to remind the relevant personnel to recycle and process it.

[0055] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application, without departing from the spirit and scope of the present application, the present application can also have various changes and improvements, these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A kind of intelligent detection device of surface flaw of processing piece, including machine body (1), the upper end of the machine body (1) is fixed with rack (11);Image collector (111) and illumination lamp (112) are arranged between the rack (11) and machine body (1);The image collector (111) and illumination lamp (112) are connected with rack (11), it is characterized by: The upper end of the machine body (1) is provided with a mounting groove (12); the mounting groove (12) is provided with a mounting frame (13); the mounting frame (13) and the machine body (1) are rotatably connected with a connecting shaft (121); the surface of the connecting shaft (121) is wound with a transmission belt (122); one side of the machine body (1) is fixedly provided with a driving motor (123); the driving motor (123) is used for driving the connecting shaft (121) to rotate; the surface of the mounting frame (13) is provided with a U-shaped plate (131); the U-shaped plate (131) is fixedly connected with the transmission belt (122); the U-shaped plate (131) and the mounting frame (13) are in rolling contact through a roller (132); one end of the U-shaped plate (131) away from the mounting frame (13) is rotatably connected with a screw rod (133); the threads of the two ends of the screw rod (133) are oppositely arranged; the two ends of the screw rod (133) are threadedly connected with a sliding block (134); the upper end of the sliding block (134) is rotatably connected with a roller (135); the lower end of the rack (11) is fixedly connected with two distance sensors (113); one side of the machine body (1) is provided with a driving unit; the driving unit is used for driving the screw rod (133) to rotate. The surface of the U-shaped plate (131) is provided with a through groove (137); the sliding block (134) is slidably connected in the through groove (137); one side of the sliding block (134) is rotatably connected with a transmission gear (138); the transmission gear (138) and the roller (135) are connected through a belt (139) in belt transmission connection; the upper end of the machine body (1) is provided with a rotating unit; the rotating unit is used for driving the roller (135) to rotate.

2. The intelligent device for detecting surface flaws of a workpiece according to claim 1, characterized in that: Both sides of the mounting frame (13) are provided with two driving gears (124); the driving gears (124) are fixedly connected with the connecting shaft (121); the transmission belt (122) is wound around the surfaces of the two driving gears (124) on the same side of the mounting frame (13); the inner wall of the transmission belt (122) is provided with a gear slot (125); the driving gears (124) are meshed with the gear slot (125).

3. The intelligent device for detecting surface flaws of a workpiece according to claim 2, characterized in that: The driving unit comprises a servo motor (14); the output end of the servo motor (14) is provided with a groove (141); the groove (141) is slidably connected with a bevel gear shaft (142); the groove bottom of the groove (141) and the bevel gear shaft (142) are connected through a supporting spring (143); the groove bottom of the groove (141) is inlaid with an electromagnetic sheet (144); one end of the screw rod (133) is fixedly connected with a bevel gear ring (136).

4. The intelligent device for detecting surface flaws of a workpiece according to claim 1, wherein: The rotating unit comprises a rotating gear (15); a stepping motor (151) is arranged between the mounting frame (13) and the U-shaped plate (131); the stepping motor (151) is fixedly connected with the mounting frame (13); the rotating gear (15) is slidably connected to the output shaft of the stepping motor (151); a connecting spring (152) is sleeved on the output shaft of the stepping motor (151); an electromagnetic ring (153) is fixedly connected to the surface of the output shaft of the stepping motor (151); one end of the connecting spring (152) is connected with the stepping motor (151), and the other end is connected with the electromagnetic ring (153).

5. The intelligent device for detecting surface flaws of a workpiece according to claim 1, characterized in that: The rotating unit comprises a rack (16); the rack (16) is fixedly connected to the upper end of the machine body (1); the rack (16) is engaged with a transmission gear (138).

6. The intelligent device for detecting surface flaws of a workpiece according to claim 5, characterized in that: The surface of the roller (135) is provided with a strip-shaped groove (161); the roller (135) is made of fluorine rubber material.

7. A method for intelligent detection of surface defects of a workpiece, the method being applicable to the intelligent detection device for surface defects of a workpiece as claimed in claim 6, characterized in that: The steps of the method are as follows: S1: workpiece placement: first, place the motor shaft to be detected on the roller (135) of the U-shaped plate (131), so that the larger end of the two ends of the motor shaft is close to the servo motor (14), and then control the driving motor (123) to drive the transmission belt (122) to rotate, so that the transmission belt (122) drives the U-shaped plate (131) to enter the rack (11); S2: workpiece adjustment: when the U-shaped plate (131) enters the rack (11) and is located directly below the distance sensor (113), control the driving motor (123) to stop, and at the same time, control the electromagnetic ring (153) to be de-energized, so that the bevel gear shaft (142) is engaged with the bevel gear ring (136) under the pushing of the supporting spring (143), at this time, control the servo motor (14) to operate, the servo motor (14) drives the screw rod (133) to rotate, so that the screw rod (133) drives the adjacent two rollers (135) to move away, so as to adjust the motor shaft to a horizontal state; S3: image acquisition A; after the motor shaft is adjusted to a horizontal state, control the driving motor (123) to drive the U-shaped plate (131) to be directly below the image collector (111), at this time, control the electromagnetic ring (153) to be de-energized, so that the rotating gear (15) is engaged with the transmission gear (138), and at the same time, control the stepping motor (151) to operate, so that the stepping motor (151) drives the transmission gear (138) to rotate through the rotating gear (15), so that the transmission gear (138) drives the motor shaft to rotate through the roller (135), and finally control the image collector (111) to collect images of the rotating motor shaft; image acquisition B: after the motor shaft is adjusted to a horizontal state, control the driving motor (123) to drive the U-shaped plate (131) to be close to the image collector (111), until the transmission gear (138) is in contact with the rack (16) and is engaged, the transmission gear (138) rolls on the upper end of the rack (16), so that the transmission gear (138) drives the motor shaft to rotate through the roller (135), at this time, the image collector (111) is started, and images of the rotating motor shaft are collected. S4: Detection: After the image collector (111) collects the image of the motor shaft surface, the image collector (111) will directly upload the collected image to the cloud and compare it with the image of the intact motor shaft. When it is detected that there are defects on the surface of the motor shaft, the cloud will send a signal to the alarm immediately, and trigger the alarm to remind the relevant personnel to recycle and process it.

Images