Non-contact automobile part inner hole detection device

Abstract

The invention discloses a non-contact automobile part inner hole detection device, and belongs to the technical field of automobile part production. The device comprises a workbench, a clamping assembly is installed on the workbench, a support is installed on the upper side of the workbench, a hydraulic rod is fixedly installed on the lower side of the support, a moving plate is fixedly connected to the lower side of the hydraulic rod, and a moving cylinder is fixedly connected to the lower side of the moving plate. When the inner hole of the automobile part is detected, under the action of the beating ball, the beating ball can enter the inner hole of the automobile part in one step through the optical detection assembly, under the action of the beating ball, the dredging effect on the inner hole of the automobile part can be formed, the cleanliness of the inner hole of the automobile part is kept, and the detection efficiency is improved. In addition, in the detection process, under the action of centrifugal force, the movement range of the beating ball can be expanded, and therefore the guiding effect can be better achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive component production, and particularly to a non-contact inner hole detection device for automotive components. Background Art

[0002] During the production process of automotive components, it is necessary to perform detection operations on the inner holes of automotive components. Currently, the most widely used detection method is to place the automotive components to be detected in a workbench, align the inner hole to be detected with an irradiation lamp, turn on the irradiation lamp, and complete the detection operation of the inner hole using the principle of optics. The overall operation is simple; However, in the actual working process, only using the optical method for detection results in a single detection method, which in turn leads to certain errors in the detection results. Then, during the detection, it is necessary to manually clean the inner holes of the automotive components to be detected, which is time-consuming and laborious, and the cleaning effect is relatively average. Moreover, when using the optical method for detection, if there is a soft connection in the inner hole of the automotive component (i.e., the connection on the inner wall of the inner hole of the automotive component is in a state of being broken but still connected), the traditional detection method cannot detect it. Therefore, a non-contact inner hole detection device for automotive components is provided. Summary of the Invention

[0003] The purpose of the present invention is to solve the drawbacks existing in the prior art, and a non-contact inner hole detection device for automotive components is proposed.

[0004] The present invention adopts the following technical solutions: A non-contact inner hole detection device for automotive components, including a workbench, a clamping assembly is installed on the workbench, a bracket is installed on the upper side of the workbench, a hydraulic rod is fixedly installed on the lower side of the bracket, a moving plate is fixedly connected to the lower side of the hydraulic rod, a moving cylinder is fixedly connected to the lower side of the moving plate, an optical detection assembly is fixed to the outer side of the moving cylinder, a dredging assembly is installed on the lower side of the moving cylinder, the dredging assembly includes a threaded cylinder rotatably penetrating the moving plate, the threaded cylinder threadedly penetrates the bracket, a rotating frame is fixedly connected to the lower side of the threaded cylinder, a threaded rod is threadedly connected in the threaded cylinder, the threaded rod extends to one end inside the rotating frame and is fixedly connected with a first gear, two sliding rods are slidably installed in the rotating frame, first racks are fixedly connected to the side walls of the two sliding rods, the first gear meshes with the first racks, first connecting rods are fixedly connected to the outer sides of the two sliding rods, a second connecting rod is fixedly connected to the lower side of the first connecting rod, a sliding plate is fixedly connected to the outer side of the second connecting rod, a knocking ball is sleeved on the outer side of the sliding plate, and a second spring is fixedly connected between the sliding plate and the knocking ball.

[0005] Preferably, a knocking component is installed on the outer side of the rotating frame. The knocking component includes a fixing plate fixedly installed on the outer side of the rotating frame. A contact plate is slidably connected inside the fixing plate. A plurality of protrusions are fixedly installed circumferentially on the lower side of the moving cylinder. A first connecting plate is fixedly connected to the outer side of the contact plate. A first spring is fixedly installed between the first connecting plate and the fixing plate. A third connecting rod is fixedly connected to the lower side of the contact plate. A triangular plate is fixedly installed on the lower side of the third connecting rod. A trapezoidal plate is fixedly connected to the outer side of the knocking ball.

[0006] Preferably, an inner wall detection component is installed on the outer side of the knocking ball. The inner wall detection component includes a rotating rod rotatably installed inside the knocking ball. A third gear is fixedly connected to the outer side of the rotating rod. A third rack is meshed and connected to the outer side of the third gear. A fifth connecting rod is fixedly installed on the upper side of the third rack. The fifth connecting rod is slidably connected to the sliding plate. A second gear is also fixedly connected to the outer side of the rotating rod. Two second racks are meshed and connected to the outer side of the second gear. Second connecting plates are fixedly installed on the outer sides of the two second racks. The second connecting plates are slidably connected to the knocking ball. A fourth connecting rod is slidably connected to the side wall of the second connecting plate. An arc plate is fixedly connected to the end of the fourth connecting rod located outside the knocking ball. A third connecting plate is fixedly connected to the outer side of the fourth connecting rod. A third spring is fixedly connected between the third connecting plate and the second connecting plate. A pressure sensor is also fixedly connected between the third connecting plate and the second connecting plate.

[0007] Preferably, the contact surfaces of the triangular plate and the trapezoidal plate are both smooth.

[0008] Preferably, the clamping component includes a plurality of hydraulic mechanical jaws fixedly installed on the upper side of the workbench. An anti-slip rubber pad is fixedly installed on the outer side of each hydraulic mechanical jaw.

[0009] Preferably, a light-shielding plate is fixedly connected to the upper side of the workbench.

[0010] Preferably, the diameter of the second gear is much larger than the diameter of the third gear.

[0011] The beneficial effects of the present invention are as follows: 1. First, when detecting the inner hole of an automotive part, under the action of the knocking ball, the knocking ball can enter the inner hole of the automotive part one step ahead of the optical detection component. Under the action of the knocking ball, a guiding effect on the inner hole of the automotive part can be formed, maintaining the cleanliness of the inner hole of the automotive part, thereby improving the accuracy of the detection result. And during the detection process, under the action of centrifugal force, the movement range of the knocking ball can also be expanded, and thus a better guiding effect can be achieved. 2. Meanwhile, under the action of the protrusion and the contact plate, when the threaded cylinder rotates, under the transmission of a series of mechanical components, the knocking ball will deviate from its moving trajectory. When the knocking ball abuts against the inner hole of the automotive part, it can form a slight knocking on the inner hole of the automotive part to be detected, preventing the phenomenon of soft connection in the inner hole of the automotive part to be detected, and further improving the accuracy of the detection result. 3. Finally, under the action of the arc-shaped plate, when the knocking ball moves, it will cause the arc-shaped plate to quickly move towards the inner wall of the inner hole of the automotive part. When the arc-shaped plate abuts against the inner wall of the inner hole of the automotive part, under the blocking action of the inner wall of the inner hole of the automotive part, the arc-shaped plate will stop moving, and the pressure sensor will send out corresponding electrical signals. During this process, the time when the pressure sensors in the two knocking balls send out electrical signals can be compared. If the time when the two pressure sensors send out electrical signals is the same, it indicates that the inner hole of the automotive part is in good condition, and further detection operation of the automotive part is completed. Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of a non-contact inner hole detection device for automotive parts proposed by the present invention; Figure 2 It is a schematic structural diagram of the workbench and the bracket in a non-contact inner hole detection device for automotive parts proposed by the present invention; Figure 3 It is a schematic structural diagram of the hydraulic rod, the threaded cylinder and the moving cylinder in a non-contact inner hole detection device for automotive parts proposed by the present invention; Figure 4 It is a connection schematic diagram of the threaded cylinder and the rotating frame in a non-contact inner hole detection device for automotive parts proposed by the present invention; Figure 5 It is a connection schematic diagram of the first gear and the first rack in a non-contact inner hole detection device for automotive parts proposed by the present invention; Figure 6 It is a connection schematic diagram of the triangular plate and the trapezoidal plate in a non-contact inner hole detection device for automotive parts proposed by the present invention; Figure 7 It is a connection schematic diagram of the first connecting rod, the second connecting rod and the knocking ball in a non-contact inner hole detection device for automotive parts proposed by the present invention; Figure 8 It is an internal connection schematic diagram of the knocking ball in a non-contact inner hole detection device for automotive parts proposed by the present invention; Figure 9 It is a connection schematic diagram of the first gear and the second gear in a non-contact inner hole detection device for automotive parts proposed by the present invention; Figure 10Schematic diagram of the connection of the first gear and the second gear of a non-contact inner hole detection device for automotive parts proposed by the present invention from another angle; Figure 11 Schematic cross-sectional connection diagram of the knocking ball in a non-contact inner hole detection device for automotive parts proposed by the present invention; Figure 12 It is Figure 3 The enlarged view of the structure at A in Figure 13 Schematic diagram showing the movement state of the knocking ball in a non-contact inner hole detection device for automotive parts proposed by the present invention.

[0013] In the figure: 1 workbench, 2 bracket, 3 threaded barrel, 4 hydraulic rod, 5 moving plate, 6 moving cylinder, 7 optical detection component, 8 rotating frame, 9 threaded rod, 10 fixing plate, 11 first connecting rod, 12 knocking ball, 13 first gear, 14 sliding rod, 15 first rack, 16 trapezoidal plate, 17 second connecting rod, 18 arc plate, 19 protrusion, 20 contact plate, 21 first connecting plate, 22 first spring, 23 third connecting rod, 24 triangular plate, 25 second spring, 26 sliding plate, 27 rotating rod, 28 second rack, 29 second gear, 30 third gear, 31 second connecting plate, 32 third rack, 33 fourth connecting rod, 34 pressure sensor, 35 third spring, 36 fifth connecting rod, 37 third connecting plate. Specific implementation mode

[0014] Refer to Figures 1-13 , a non-contact inner hole detection device for automotive parts, including a workbench 1, a clamping assembly is installed on the workbench 1, the clamping assembly includes a plurality of hydraulic mechanical jaws fixedly installed on the upper side of the workbench 1, an anti-slip rubber pad is fixedly installed on the outer side of each hydraulic mechanical jaw, a display screen is also installed on the upper side of the workbench 1, which can display the detected data, and a light-shielding plate is fixedly connected to the upper side of the workbench 1 to reduce the influence of external natural light on the experimental results; A bracket 2 is installed on the upper side of the workbench 1, and a hydraulic rod 4 is fixedly installed on the lower side of the bracket 2. A moving plate 5 is fixedly connected to the lower side of the hydraulic rod 4, and a moving cylinder 6 is fixedly connected to the lower side of the moving plate 5. An optical detection component 7 is fixed on the outer side of the moving cylinder 6. The optical detection component 7 includes a plurality of light emitters and a plurality of light receivers. When it is necessary to detect the inner hole of an automobile part, the automobile part to be detected is placed on the workbench 1, fixed by a hydraulic mechanical clamp, and the hydraulic rod 4 is started. The hydraulic rod 4 drives the moving cylinder 6 to move downward through the moving plate 5, so that the moving cylinder 6 extends into the inner hole of the automobile part to be detected, and then the light emitter and the light receiver are started. The light emission and refraction phenomena are used to analyze the signal received by the light receiver, so that the actual situation of the inner hole of the automobile part to be detected can be known, and then the detection operation of the inner hole of the automobile part can be completed. The above are all prior arts and no unnecessary elaboration is made. A guiding assembly is installed on the lower side of the moving cylinder 6, and the guiding assembly includes a threaded cylinder 3 that rotates and passes through the moving plate 5. The threaded cylinder 3 threads through the bracket 2. The lower side of the threaded cylinder 3 is fixedly connected to a rotating frame 8. The threaded cylinder 3 is internally threaded with a threaded rod 9. The threaded rod 9 extends into the rotating frame 8 and is fixedly connected to one end with a first gear 13. Two sliding rods 14 are slidably installed in the rotating frame 8. The side walls of the two sliding rods 14 are fixedly connected to the first rack 15. The first gear 13 and the first rack 15 are meshed. The outer sides of the two sliding rods 14 are fixedly connected to the first connecting rod 11. The lower side of the first connecting rod 11 is fixedly connected to the second connecting rod 17. The outer side of the second connecting rod 17 is fixedly connected to a slide plate 26. The outer side of the slide plate 26 is sleeved with a knocking ball 12. A second spring 25 is fixedly connected between the slide plate 26 and the knocking ball 12. Figure 11 The slide plate 26 is located in the cavity on the upper side of the striking ball 12, the slide plate 26 and the upper and lower sides of the upper cavity are against each other, and the other four side walls of the slide plate 26 are connected to the striking ball 12 through the second spring 25; First, before inspecting the inner hole of the automotive part to be inspected, the threaded rod 9 is rotated relative to the threaded barrel 3, the threaded rod 9 drives the first gear 13 to rotate, and the first gear 13 drives the meshing first rack 15 to move, so that Figure 5 Based on the direction, when the first gear 13 rotates counterclockwise, the first rack 15 will move, and the first rack 15 will drive the slide bar 14 to move in the direction close to each other, and the slide bar 14 drives the slide plate 26 to move in the direction close to each other through the first connecting rod 11 and the second connecting rod 17, and the slide plate 26 drives the knocking ball 12 to move in the direction close to each other through the second spring 25, until the distance between the two knocking balls 12 is smaller than the diameter of the inner hole of the automotive part to be detected, and when the two knocking balls 12 follow the moving cylinder 6 to enter the inner hole of the automotive part to be detected, there is a certain distance between the knocking ball 12 and the automotive part to be detected, and this distance is small; Moreover, during the above adjustment process, the first gear 13 and the first rack 15 have always been in a meshed connection state. Since the threaded cylinder 3 and the threaded rod 9 are in a threaded connection, there is a self-locking phenomenon between the threaded cylinder 3 and the threaded rod 9 without external force, that is, the first gear 13 and the first rack 15 as a whole are in a fixed state; Then, when it is necessary to detect the inner hole of the automotive part to be detected, the activated hydraulic rod 4 drives the moving plate 5 to move downward. Since the threaded cylinder 3 and the moving plate 5 are in a rotational connection, and the threaded cylinder 3 and the bracket 2 are in a threaded connection, the downward moving moving plate 5 will cause the threaded cylinder 3 to rotate while moving downward following the moving plate 5. The threaded cylinder 3 drives the knocking ball 12 to rotate through the rotating frame 8, the sliding rod 14, the first connecting rod 11, the second connecting rod 17, the sliding plate 26 and the second spring 25. Eventually, the knocking ball 12 will rotate while moving downward. During this process, since the sliding plate 26 and the knocking ball 12 are connected by the second spring 25, at this time, under the action of centrifugal force, the movement radius of the knocking ball 12 will gradually increase, but the knocking ball 12 will not abut against the inner hole wall of the automotive part to be detected, forming a guiding effect on the inner hole of the automotive part to be detected, expanding the guiding range, maintaining the cleanliness of the inner hole of the automotive part to be detected, and finally effectively improving the accuracy of the subsequent detection results.

[0015] A knocking assembly is installed on the outer side of the rotating frame 8. The knocking assembly includes a fixing plate 10 fixedly installed on the outer side of the rotating frame 8. A contact plate 20 is slidably connected inside the fixing plate 10. A plurality of protrusions 19 are circumferentially and fixedly installed on the lower side of the moving cylinder 6. A first connecting plate 21 is fixedly connected to the outer side of the contact plate 20. A first spring 22 is fixedly installed between the first connecting plate 21 and the fixing plate 10. A third connecting rod 23 is fixedly connected to the lower side of the contact plate 20. A triangular plate 24 is fixedly installed on the lower side of the third connecting rod 23. A trapezoidal plate 16 is fixedly connected to the outer side of the knocking ball 12; First of all, during the movement of the rotating frame 8, when taking the moving cylinder 6 as the reference system (that is, considering the moving cylinder 6 as stationary), the rotating frame 8 only rotates relative to the moving cylinder 6. Since the moving cylinder 6 is in a stationary state, when the fixing plate 10 and the contact plate 20 that follow the rotating frame 8 rotate, the contact plate 20 will always abut against the moving cylinder 6 or the protrusions 19. Since the first spring 22 is always in a stretched state during this process, Figure 4 and Figure 6 based on the direction of Figure 13, the outermost circle represents the inner hole of the automotive part to be detected, and the circle in the middle with the dashed line represents the movement trajectory of the knocking ball 12. When the triangular plate 24 abuts against the trapezoidal plate 16, it will cause the knocking ball 12 to deviate from its movement trajectory and move towards the inner hole of the automotive part to be detected until it abuts against and collides with the inner hole of the automotive part to be detected, thereby causing the second spring 25 to deform again (when the knocking ball 12 moves with the rotating frame 8, under the action of centrifugal force, the second spring 25 will deform for the first time). When the triangular plate 24 moves to the lowermost side and then starts to move upward until the triangular plate 24 disconnects from the trapezoidal plate 16, the knocking ball 12 will return to its original position relative to the rotating frame 8 (the original position at this time refers to the position after the first deformation of the second spring 25). Finally, during the detection, it can form a slight knock on the inner hole of the automotive part to be detected, preventing the phenomenon of soft connection in the inner hole of the automotive part to be detected, and further improving the accuracy of the detection result.

[0016] An inner wall detection component is installed on the outside of the knocking ball 12. The inner wall detection component includes a rotating rod 27 rotatably installed inside the knocking ball 12. A third gear 30 is fixedly connected to the outside of the rotating rod 27. A third rack 32 is meshed and connected to the outside of the third gear 30. A fifth connecting rod 36 is fixedly installed on the upper side of the third rack 32. The fifth connecting rod 36 is slidably connected to the sliding plate 26. A second gear 29 is also fixedly connected to the outside of the rotating rod 27. Two second racks 28 are meshed and connected to the outside of the second gear 29. Second connecting plates 31 are fixedly installed on the outside of the two second racks 28. The second connecting plates 31 are slidably connected to the knocking ball 12. A fourth connecting rod 33 is slidably connected to the side wall of the second connecting plate 31. One end of the fourth connecting rod 33 located outside the knocking ball 12 is fixedly connected to an arc-shaped plate 18. A third connecting plate 37 is fixedly connected to the outside of the fourth connecting rod 33. A third spring 35 is fixedly connected between the third connecting plate 37 and the second connecting plate 31. A pressure sensor 34 is also fixedly connected between the third connecting plate 37 and the second connecting plate 31. The contact surfaces of the triangular plate 24 and the trapezoidal plate 16 are both set to be smooth; First of all, the pressure sensor 34 is a device or apparatus that can sense pressure signals and convert the pressure signals into available output electrical signals according to certain rules. Secondly, the diameter of the second gear 29 is much larger than that of the third gear 30. The second gear 29 and the third gear 30 have the same angular velocity. Therefore, the linear velocity of the second gear 29 is much larger than that of the third gear 30. Then, when the knocking ball 12 deviates, that is, based on the Figure 13 direction, the knocking ball 12 becomes in the Z state, and the knocking ball 12 moves upward relative to the sliding plate 26. Switching the perspective, based on Figure 8When the direction of [description is missing in the original, assumed to be something related] is the basis, hitting the ball 12 will move backward relative to the skateboard 26, thus causing the third gear 30 to rotate clockwise. The third gear 30 drives the second gear 29 to rotate clockwise through the rotating rod 27. The second gear 29 drives the second connecting plate 31 to move towards each other through the second rack 28. The second connecting plate 31 drives the third connecting plate 37 to move towards each other through the third spring 35. The third connecting plate 37 drives the arc plate 18 to move towards each other through the fourth connecting rod 33. Since the linear velocity of the second gear 29 is much greater than that of the third gear 30, the arc plate 18 will quickly move away from the inner hole of the automotive component. When the triangular plate 24 and the trapezoidal plate 16 are disconnected, the two arc plates 18 will move away from each other. The two arc plates 18 will abut against the inner wall of the inner hole of the automotive component again, and the pressure sensor 34 will emit a corresponding electrical signal. During this process, the time when the pressure sensors 34 in the two hitting balls 12 emit electrical signals can be compared. If the time when the two pressure sensors 34 emit electrical signals is the same, it indicates that the inner hole of the automotive component is in good condition. During the above detection process, the arc plate 18 and the inner wall of the inner hole of the automotive component are in an intermittent contact state, causing less damage to the inner hole of the automotive component.

[0017] In the present invention, when it is necessary to detect the inner hole of an automotive component, the automotive component to be detected is placed on the workbench 1 and fixed by using a hydraulic mechanical claw. Then, the hydraulic rod 4 is started. The hydraulic rod 4 drives the moving cylinder 6 to move downward through the moving plate 5, so that the moving cylinder 6 extends into the inner hole of the automotive component to be detected. Then, the light emitter and the light receiver are started. By using the phenomena of light emission and refraction, the signal received by the light receiver is analyzed, and thus the actual situation of the inner hole of the automotive component to be detected can be known, and then the detection operation of the inner hole of the automotive component is completed. The above are all prior arts and will not be elaborated further. Before performing the detection operation on the inner hole of the automotive component to be detected, first rotate the threaded rod 9 relative to the threaded cylinder 3. The threaded rod 9 drives the first gear 13 to rotate. The first gear 13 drives the engaged first rack 15 to move, so as to Figure 5Based on the direction, when the first gear 13 rotates counterclockwise, it will cause the first rack 15 to move. The first rack 15 will drive the sliding rod 14 to move towards each other. The sliding rod 14 drives the sliding plate 26 to move towards each other through the first connecting rod 11 and the second connecting rod 17. The sliding plate 26 drives the knocking ball 12 to move towards each other through the second spring 25 until the distance between the two knocking balls 12 is less than the inner hole diameter of the automotive part to be detected. And when the two knocking balls 12 follow the moving cylinder 6 into the inner hole of the automotive part to be detected, there is a certain distance between the knocking ball 12 and the automotive part to be detected, and this distance is relatively small. Then when it is necessary to detect the inner hole of the automotive part to be detected, the activated hydraulic rod 4 drives the moving plate 5 to move downward. Since the threaded cylinder 3 is rotatably connected to the moving plate 5 and the threaded cylinder 3 is threadedly connected to the bracket 2, the downward moving moving plate 5 will cause the threaded cylinder 3 to rotate while moving downward following the moving plate 5. The threaded cylinder 3 drives the knocking ball 12 to rotate through the rotating frame 8, the sliding rod 14, the first connecting rod 11, the second connecting rod 17, the sliding plate 26 and the second spring 25. Eventually, the knocking ball 12 will move downward and rotate at the same time. During this process, since the sliding plate 26 and the knocking ball 12 are connected by the second spring 25, at this time, under the action of centrifugal force, the movement radius of the knocking ball 12 will gradually increase, but the knocking ball 12 will not abut against the inner hole wall of the automotive part to be detected, forming a guiding effect on the inner hole of the automotive part to be detected, expanding the guiding range, maintaining the cleanliness of the inner hole of the automotive part to be detected, and finally effectively improving the accuracy of the subsequent detection results; During the movement of the rotating frame 8, when taking the moving cylinder 6 as the reference system (that is, considering the moving cylinder 6 to be stationary), the rotating frame 8 only rotates relative to the moving cylinder 6. Since the moving cylinder 6 is in a fixed state, the fixed plate 10 and the contact plate 20 that follow the rotation of the rotating frame 8 will always abut against the moving cylinder 6 or the protrusion 19 during rotation. Since the first spring 22 is always in a stretched state, Figure 4 and Figure 6 Based on the direction, it will cause the contact plate 20 to move up and down all the time. The contact plate 20 drives the triangular plate 24 to move up and down through the third connecting rod 23. When the triangular plate 24 moves downward, the triangular plate 24 abuts against the trapezoidal plate 16, which will cause the trapezoidal plate 16 to move away from each other, that is, referring to Figure 13, the outermost circle represents the inner hole of the automotive part to be detected, and the circle in the middle with the dotted line represents the movement trajectory of the knocking ball 12. When the triangular plate 24 abuts against the trapezoidal plate 16, it will cause the knocking ball 12 to deviate from its movement trajectory and move towards the inner hole of the automotive part to be detected until it abuts against and collides with the inner hole of the automotive part to be detected, thereby causing the second spring 25 to deform again (when the knocking ball 12 moves with the rotating frame 8, under the action of centrifugal force, the second spring 25 deforms for the first time). When the triangular plate 24 moves to the lowermost side, the triangular plate 24 starts to move upward until the triangular plate 24 disconnects from the trapezoidal plate 16, and the knocking ball 12 will return to its original position relative to the rotating frame 8 (the original position at this time refers to the position after the first deformation of the second spring 25). Finally, during the detection, it can form a slight knock on the inner hole of the automotive part to be detected, preventing the phenomenon of soft connection in the inner hole of the automotive part to be detected, and further improving the accuracy of the detection result; When the knocking ball 12 deviates, that is, based on the direction of Figure 13 , the knocking ball 12 becomes in the Z state, and the knocking ball 12 moves upward relative to the sliding plate 26. Switching the perspective, when based on the direction of Figure 8 , the knocking ball 12 will move backward relative to the sliding plate 26. Therefore, it will cause the third gear 30 to rotate clockwise. The third gear 30 drives the second gear 29 to rotate clockwise through the rotating rod 27. The second gear 29 drives the second connecting plate 31 to move towards each other through the second rack 28. The second connecting plate 31 drives the third connecting plate 37 to move towards each other through the third spring 35. The third connecting plate 37 drives the arc-shaped plate 18 to move towards each other through the fourth connecting rod 33. Since the linear velocity of the second gear 29 is much greater than that of the third gear 30, it will cause the arc-shaped plate 18 to quickly move away from the inner hole of the automotive part. When the triangular plate 24 disconnects from the trapezoidal plate 16, it will cause the two arc-shaped plates 18 to move away from each other, and the two arc-shaped plates 18 abut against the inner wall of the automotive part inner hole again, and the pressure sensor 34 emits a corresponding electrical signal. During this process, the time when the pressure sensors 34 in the two knocking balls 12 emit electrical signals can be compared. If the time when the two pressure sensors 34 emit electrical signals is the same, it indicates that the inner hole condition of the automotive part is good. During the above detection process, the arc-shaped plate 18 and the inner wall of the automotive part inner hole are in an intermittent contact state, and the damage to the inner hole of the automotive part is relatively small.

Claims

1. A non-contact automobile parts inner hole detection device, comprising a workbench (1), characterized in that: The workbench (1) is provided with a clamping assembly, a bracket (2) is provided on the upper side of the workbench (1), a hydraulic rod (4) is fixedly provided on the bracket (2), the hydraulic rod (4) is fixedly connected to a moving plate (5), the moving plate (5) is fixedly connected to a moving cylinder (6), the moving cylinder (6) is fixedly provided with an optical detection assembly (7), the moving cylinder (6) is provided with a drainage assembly, the drainage assembly comprises a threaded cylinder (3) which is rotatably passed through the moving plate (5), the threaded cylinder (3) is threadedly passed through the bracket (2), the threaded cylinder (3) is fixedly provided with a rotating frame (8), the threaded cylinder (3) is internally threadedly connected to a threaded rod (9), the threaded rod (9) is internally threadedly connected to the threaded rod (9) ) extends into the rotating frame (8), one end of which is fixedly connected to a first gear (13), two sliding rods (14) are slidably installed in the rotating frame (8), the two sliding rods (14) are fixedly connected to a first rack (15), the first gear (13) and the first rack (15) are meshed, the two sliding rods (14) are fixedly connected to a first connecting rod (11), the first connecting rod (11) is fixedly connected to a second connecting rod (17), the outer side of the second connecting rod (17) is fixedly connected to a slide plate (26), the slide plate (26) is sleeved with a knocking ball (12), and a second spring (25) is fixedly connected between the slide plate (26) and the knocking ball (12).

2. A non-contact automobile parts inner hole detection device according to claim 1, characterized in that: A striking assembly is installed on the outer side of the rotating frame (8), and the striking assembly comprises a fixed plate (10) fixedly installed on the outer side of the rotating frame (8), the fixed plate (10) being slidably connected to a contact plate (20), a plurality of protrusions (19) being fixedly installed circumferentially on the movable cylinder (6), the contact plate (20) being fixedly connected to a first connecting plate (21), a first spring (22) being fixedly installed between the first connecting plate (21) and the fixed plate (10), the contact plate (20) being fixedly connected to a third connecting rod (23), the third connecting rod (23) being fixedly installed to a triangular plate (24), and a trapezoidal plate (16) being fixedly connected to the outer side of the striking ball (12).

3. A non-contact automobile parts inner hole detection device according to claim 2, characterized in that: An inner wall detection assembly is installed on the outer side of the knocking ball (12), and the inner wall detection assembly includes a rotating rod (27) rotatably installed in the knocking ball (12), the rotating rod (27) is fixedly connected to a third gear (30), the third gear (30) is meshingly connected to a third rack (32), the third rack (32) is fixedly installed to a fifth connecting rod (36), the fifth connecting rod (36) and the slide plate (26) are slidably connected, the rotating rod (27) is also fixedly connected to a second gear (29), the second gear (29) is meshingly connected to two second racks (28), and the two second racks (28) are meshingly connected to each other. 8) are fixedly installed with a second connecting plate (31), the second connecting plate (31) and the knocking ball (12) are slidably connected, the second connecting plate (31) is slidably connected to a fourth connecting rod (33), the fourth connecting rod (33) is fixedly connected to an arc plate (18) at one end located outside the knocking ball (12), the fourth connecting rod (33) is fixedly connected to a third connecting plate (37), a third spring (35) is fixedly connected between the third connecting plate (37) and the second connecting plate (31), and a pressure sensor (34) is also fixedly connected between the third connecting plate (37) and the second connecting plate (31).

4. The non-contact automobile parts inner hole detection device according to claim 2, characterized in that: The contact surfaces of the triangular plate (24) and the trapezoidal plate (16) are both smoothly arranged.

5. The non-contact automobile parts inner hole detection device according to claim 1, characterized in that: The clamping assembly comprises a plurality of hydraulic mechanical clamps fixedly mounted on the upper side of the workbench (1), and an anti-slip rubber pad is fixedly mounted on the outer side of each hydraulic mechanical clamp.

6. The non-contact automobile parts inner hole detection device according to claim 1, characterized in that: A shading plate is fixedly connected to the upper side of the workbench (1).

7. The non-contact automobile parts inner hole detection device according to claim 3, characterized in that: The diameter of the second gear (29) is much larger than the diameter of the third gear (30).

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