A detection system and method for gearbox casting defects

Abstract

The present invention discloses a gearbox casting defect detection system and method. The system comprises a conveying module, the conveying module including a roller conveyor, the roller conveyor being used to convey the gearbox housing in direction A; a detection module; a judgment module; and an insertion module, the insertion module including a deflection frame, the end of which is provided with a rotating portion. The gearbox housing is pushed and deflected by the deflection frame, and an internal camera is deflected by the deflection frame and enters the gearbox housing. The gearbox housing is transported through the detection module via the roller conveyor, and the movement of the gearbox housing drives the deflection frame to provide movement power for the internal camera, allowing the internal camera to enter the gearbox housing for inspection. This allows the gearbox housing to be inspected in a continuous state across its entire surface, making inspection more convenient and efficient.

Description

Technical Field

[0001] The present invention belongs to the technical field of casting surface defect detection, and in particular relates to a gearbox casting defect detection system and a detection method of the gearbox casting defect detection system. Background Art

[0002] Gearboxes are essential components used extensively in mechanical transmissions, placing increasingly stringent demands on their housings. After casting, the gearbox housing must be free of defects such as shrinkage cavities, porosity, inclusions, pores, and cracks on both the inner and outer surfaces. This necessitates inspection of the entire surface of the gearbox housing.

[0003] In the prior art, in order to facilitate the inspection of the internal surface of the gearbox, there are two ways to inspect the gearbox outer shell. One is to fix the gearbox outer shell and move the inspection camera to photograph the internal and external surfaces of the shell. The other is to fix the camera and move the gearbox to photograph the internal and external surfaces of the shell. Both inspections are non-continuous inspections and need to stop in the middle to adjust the clamping position of the gearbox outer shell. The complicated operation process makes the inspection very inconvenient. Summary of the Invention

[0004] The present invention addresses the problem in the prior art that the discontinuous detection of the gearbox housing requires adjustment of the clamping position of the gearbox housing, which makes the detection process complicated and inconvenient. The present invention proposes the following technical solutions:

[0005] A gearbox casting defect detection system comprising:

[0006] A conveying module, the conveying module including a roller conveyor, the roller conveyor being used to convey the gearbox housing in direction A;

[0007] A detection module, the detection module comprising an internal camera and multiple external cameras, the internal camera being used to obtain image information of the inner surface of the gearbox housing, and the multiple external cameras being used to obtain image information of the outer surface of the gearbox housing;

[0008] A judgment module, comprising a computer, to which the internal camera and the plurality of external cameras transmit image information, and the computer is configured to receive and compare the image information collected by the detection module to determine whether there are defects on the surface of the gearbox housing;

[0009] The insertion module includes a deflection frame, and a rotating part is provided at the end of the deflection frame. The gear box housing is pushed by the deflection frame to deflect in the B direction, and the internal camera enters the gear box housing along the deflection frame.

[0010] As a preferred embodiment of the above technical solution, the insertion module further includes a rotating component, which drives the internal camera to rotate in the C direction, and the rotating internal camera shoots the entire internal surface of the gearbox housing.

[0011] As a preferred embodiment of the above technical solution, the rotating assembly includes a rotating ball, a rotating block and a driving unit. The rotating block is rotatably inserted into the deflection frame, and a torsion spring is provided at the bottom of the rotating block. The internal camera is installed inside the rotating ball. A center rod is provided at the bottom of the rotating ball. The center rod is fixedly connected to the deflection frame. A push rod is provided on one side of the rotating ball. One end of the push rod extends to the inside of the deflection frame, and the end of the push rod is inserted into the rotating block. The rotating block is sleeved on the surface of the push rod. The driving unit is used to push the rotating block to rotate so that the push rod drives the rotating ball to rotate.

[0012] As a preferred embodiment of the above technical solution, the end of the center rod is spherical, and the rotating ball is rotatably sleeved on the surface of the spherical end of the center rod.

[0013] As a preferred embodiment of the above technical solution, the end of the push rod is arranged in a convex shape, and a corresponding plug-in groove is provided on the surface of the rotating ball.

[0014] As a preferred embodiment of the above technical solution, the driving part includes a follower wheel and a connecting shaft, a first bevel gear is provided on one side of the follower wheel, a second bevel gear is meshed and connected on one side of the first bevel gear, and the second bevel gear and the connecting shaft, as well as the connecting shaft and the rotating block are connected by belts.

[0015] As a preferred embodiment of the above technical solution, the rotating assembly also includes a pulling part, which includes a blocking frame and a reverse plate. The blocking frame is fixedly connected to the external mounting frame, the reverse plate is fixedly connected to a section of the push rod, and a reset spring is arranged between the reverse plate and the deflection frame.

[0016] As a preferred embodiment of the above technical solution, it also includes a removal module, which includes a push-out block and a movable frame. The deflection frame is rotated and inserted into the movable frame through a rotating part. The push-out block and the movable frame are both movably inserted into the external mounting frame. The push-out block and the movable frame are both connected to the external mounting frame through a return spring. The gear box housing pushes the push-out block through the push-out block, and the deflection frame moves with the push-out block so that its end leaves the position of the gear box housing.

[0017] A method for detecting a gearbox casting defect detection system comprises the following steps:

[0018] S1, conveying gear box housing;

[0019] Turn the gearbox housing upside down so that it is flat on the roller conveyor, and the roller conveyor transports the gearbox in direction A;

[0020] S2, deflect the internal camera;

[0021] The moving gearbox housing contacts the end of the deflection frame and pushes it to rotate in direction B, and the internal camera then enters the gearbox housing;

[0022] S3. Determine defects;

[0023] The computer compares the images transmitted by the internal camera and the external camera to determine whether the gearbox housing is defective and removes the defective gearbox housing;

[0024] S4, manual determination;

[0025] Manually determine whether the surface defects of the gearbox housing affect its use, and continue to use the gearbox housing that can be used.

[0026] The beneficial effects of the present invention are:

[0027] 1. The gearbox housing is transported through the inspection module via a roller conveyor, and the movement of the gearbox housing drives the deflection frame to provide moving power for the internal camera, so that the internal camera can extend into the gearbox housing for inspection, thereby enabling the gearbox housing to realize the inspection of its entire surface in a continuous state, making the inspection more convenient and more efficient.

[0028] 2. The follower wheel rotates by friction caused by the movement of the gearbox housing, thereby providing power for the operation of the rotating component. The rotating block pushes the rotating ball to rotate through the push rod, allowing the internal camera to obtain image information of the side walls around the gearbox housing.

[0029] 3. The blocking frame blocks the reverse plate so that the push rod pulls the rotating ball to deflect, thereby changing the direction of the internal camera. The internal camera changes from facing the top wall inside the gearbox housing to facing the inside of the gearbox housing. In conjunction with the rotation of the rotating ball, the image information of the entire internal surface of the gearbox housing is acquired, avoiding blind spots that affect the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 What is shown is a schematic diagram of the overall structure of the embodiment;

[0031] Figure 2 The figure shows the working state of the internal camera after it is inside the gearbox housing in the embodiment;

[0032] Figure 3 What is shown is a schematic diagram of the operation of the deflection frame in the embodiment;

[0033] Figure 4 What is shown is a schematic diagram of the operation of the rotating ball in the embodiment;

[0034] Figure 5 Shown is a schematic diagram of the installation of the driving part in the embodiment;

[0035] Figure 6 Shown is a schematic diagram of the installation of the pulling portion in the embodiment;

[0036] Figure 7 Shown is a diagram of the installation position of the push rod in the embodiment;

[0037] Figure 8 Shown is a diagram of the installation position of the removed module in an embodiment.

[0038] In the figure: 10, roller conveyor; 20, internal camera; 30, deflection frame; 40, ejection block; 50, moving frame; 60, return spring; 70, rotating assembly; 71, rotating ball; 711, plug-in slide; 72, rotating block; 73, center rod; 74, push rod; 75, driving part; 751, follower wheel; 752, connecting shaft; 753, first bevel gear; 754, second bevel gear; 755, belt; 76, pulling part; 761, blocking frame; 762, reverse plate; 763, return spring. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings. Example

[0040] Figure 1-Figure 2 A gearbox casting defect detection system includes:

[0041] A conveying module, comprising a roller conveyor 10, which is used to convey the gearbox housing in direction A. The gearbox housing is inverted and placed on the roller conveyor 10 using its flat surface, and a transparent block is used to fill the groove at the gearbox shaft;

[0042] A detection module, comprising an internal camera 20 and multiple external cameras, wherein the internal camera 20 is used to obtain image information of the inner surface of the gearbox housing, and the multiple external cameras are used to obtain image information of the outer surface of the gearbox housing;

[0043] A judgment module, comprising a computer, to which the internal camera 20 and the plurality of external cameras transmit image information. The computer is configured to receive and compare the image information collected by the detection module to determine whether there are defects on the surface of the gearbox housing;

[0044] The insertion module includes a deflection frame 30, and a rotating part is provided at the end of the deflection frame 30. The gear box housing is pushed by the deflection frame 30 to deflect in the B direction, and the internal camera 20 enters the gear box housing along the deflection frame 30.

[0045] The gearbox housing is transported through the detection module via the roller conveyor 10, and the movement of the gearbox housing drives the deflection frame 30 to deflect and provide moving power for the internal camera 20, so that the internal camera 20 extends into the interior of the gearbox housing for detection, thereby enabling the gearbox housing to realize detection of its entire surface in a continuous state, making detection more convenient and more efficient.

[0046] A method for detecting a gearbox casting defect detection system comprises the following steps:

[0047] S1, conveying gear box housing;

[0048] Turn the gearbox housing upside down so that it is placed flat on the roller conveyor 10, and the roller conveyor 10 conveys the gearbox in direction A;

[0049] S2, deflect the internal camera 20;

[0050] The moving gearbox housing contacts the end of the deflection frame 30 and pushes it to rotate in the B direction, and the internal camera 20 then enters the gearbox housing;

[0051] S3. Determine defects;

[0052] The computer compares the images transmitted by the internal camera 20 and the external camera to determine whether the gearbox housing is defective and removes the defective gearbox housing;

[0053] S4, manual determination;

[0054] Manually determine whether the surface defects of the gearbox housing affect its use, and continue to use the gearbox housing that can be used.

[0055] In the technical solution of the detection method of the gearbox casting defect detection system, a roller conveyor 10 is used to drive the gearbox housing for transmission, so that the gearbox housing is detected through the detection module in a moving state. There is no need to consider the coverage of the gearbox housing surface by the external clamping device, which reduces the adjustment operation of the external clamping device on the gearbox, making the detection of defects on the gearbox housing surface more convenient.

[0056] Figure 3-Figure 7 In the embodiment, the insertion module further includes a rotating assembly 70, which drives the internal camera 20 to rotate in the C direction, and the rotating internal camera 20 shoots the entire internal surface of the gearbox housing.

[0057] The rotating assembly 70 includes a rotating ball 71, a rotating block 72 and a driving part 75. The rotating block 72 is rotatably inserted into the deflection frame 30, and a torsion spring is provided at the bottom of the rotating block 72. The internal camera 20 is installed inside the rotating ball 71. The top of the rotating ball 71 is lower than the top of the roller of the roller conveyor 10 before the deflection frame 30 is deflected. A center rod 73 is provided at the bottom of the rotating ball 71. The center rod 73 is fixedly connected to the deflection frame 30. A push rod 74 is provided on one side of the rotating ball 71. One end of the push rod 74 extends to the inside of the deflection frame 30, and the end of the push rod 74 is inserted in the rotating block 72. The driving part 75 is used to push the rotating block 72 to rotate so that the push rod 74 drives the rotating ball 71 to rotate.

[0058] Driven by the driving part 75, the rotating block 72 pushes the rotating ball 71 to rotate through the pushing rod 74, and the internal camera 20 rotates accordingly to obtain image information of the side walls around the gearbox housing to reduce the impact of the internal protrusions of the gearbox on the captured image information.

[0059] Figure 7 In the embodiment, the end of the center rod 73 is spherical, and the rotating ball 71 is rotatably sleeved on the surface of the spherical end of the center rod 73.

[0060] Because the end of the center rod 73 is spherical, the rotating ball 71 can be pushed in any direction, so that the rotating ball 71 can only rotate, preventing the rotating ball 71 from leaving the center position of the center rod 73 and causing the internal camera 20 to be unable to normally obtain image information.

[0061] Figure 7 In the embodiment, the end of the push rod 74 is convex, and a corresponding plug-in slot 711 is provided on the surface of the rotating ball 71.

[0062] The provided plug-in slot 711 can be relatively displaced when the push rod 74 pushes the rotating ball 71 to deflect, so that the push rod 74 satisfies the deflection of the rotating ball 71, thereby facilitating the adjustment of the shooting direction of the internal camera 20.

[0063] Figure 5 In the figure, the driving part 75 includes a follower wheel 751 and a connecting shaft 752. A first bevel gear 753 is provided on one side of the follower wheel 751. A second bevel gear 754 is meshed and connected to one side of the first bevel gear 753. The second bevel gear 754 has a different diameter from the first bevel gear 753. Under the transmission of the belt 755, the rotating block 72 rotates 350 degrees. The second bevel gear 754 and the connecting shaft 752, and the connecting shaft 752 and the rotating block 72 are all connected by the belt 755. The gear box housing drives it to rotate through the follower wheel 751 to provide power for the driving part 75.

[0064] The follower wheel 751 rotates by utilizing the friction generated by the movement of the gearbox housing, thereby providing power for the operation of the rotating assembly 70, and the speed of the follower wheel 751 is reduced in disguise by utilizing the different transmission ratios between the first bevel gear 753 and the second bevel gear 754, thereby preventing the rotating block 72 from over-rotating and causing damage to the rotating assembly 70.

[0065] Figure 3 、 Figure 4 and Figure 6 In the figure, the rotating assembly 70 also includes a pulling part 76, which includes a blocking frame 761 and a reverse plate 762. The blocking frame 761 is fixedly connected to the external mounting frame, and the blocking frame 761 is lower than the top of the roller of the roller conveyor 10. The reverse plate 762 is fixedly connected to a section of the push rod 74, and a reset spring 763 is provided between the reverse plate 762 and the deflection frame 30.

[0066] The blocking frame 761 blocks the reverse plate 762 so that the push rod 74 pulls the rotating ball 71 to deflect, thereby changing the shooting direction of the internal camera 20. The internal camera 20 changes from facing the top wall inside the gear box housing to facing the inside of the gear box housing. In conjunction with the rotation of the rotating ball 71, the image information of the entire internal surface of the gear box housing is obtained, avoiding the occurrence of blind spots in shooting that affect the detection results of the gear box housing.

[0067] Figure 8 The present invention also includes a removal module, which includes a push-out block 40 and a movable frame 50. The deflection frame 30 is rotated and inserted into the movable frame 50 through a rotating part. The push-out block 40 and the movable frame 50 are both movably inserted into the external mounting frame. The push-out block 40 and the movable frame 50 are both connected to the external mounting frame through a return spring 60. The gear box housing pushes the push-out block 40 through the push-out block 40, and the deflection frame 30 moves with the push-out block 40 so that its end leaves the position of the gear box housing.

[0068] The extrusion of the gearbox housing is used to provide power for the movement of the removal module. The removal module moves the deflection frame 30 away from the gearbox housing and automatically rotates and resets. The internal camera 20 can then be moved out of the gearbox housing to avoid collision with its inner surface.

[0069] Working Principle: When inspecting the entire surface of the gearbox housing, the gearbox housing is inverted so that it is placed flat on the roller conveyor 10. The roller conveyor 10 operates to convey the gearbox in direction A. The moving gearbox housing contacts and pushes the raised portion of the deflection frame 30. The deflection frame 30 rotates in direction B around its rotating portion until it is flush with the horizontal plane. The torsion spring corresponding to the deflection frame 30 is twisted and deformed, and the internal camera 20 enters the gearbox housing along with the rotating assembly 70.

[0070] During the movement of the internal camera 20, the reversing plate 762 contacts the blocking frame 761 and is pushed in the opposite direction. The reversing plate 762 then drives the push rod 74 to move and compresses the return spring 763. The protruding end of the push rod 74 moves in the insertion slot 711 to ensure the connection with the rotating ball 71. The push rod 74 moves downward to deflect the rotating ball 71 around the center rod 73, and the direction of the internal camera 20 changes accordingly.

[0071] The gearbox housing continues to move and contacts the follower wheel 751. The follower wheel 751 rotates due to friction, and the first bevel gear 753 rotates accordingly, driving the second bevel gear 754 to rotate. Under the steering action of the connecting shaft 752, the belt 755 drives the rotating block 72 to rotate, causing the push rod 74 to rotate. The torsion spring corresponding to the rotating block 72 is twisted and deformed. The push rod 74 pushes the rotating ball 71 to rotate 350 degrees in the C direction around the spherical end of the center rod 31. The internal camera 20 rotates as the rotating ball 71 rotates.

[0072] The gearbox housing continues to move and contacts the ejection block 40. The gearbox housing squeezes the ejection block 40, causing it to move the movable frame 50 in the D direction. The return spring 60 is then compressed and deformed. When the movable frame 50 drives the deflection frame 30 to move away from the gearbox housing, the torsion spring corresponding to the deflection frame 30 returns to its original position, driving the internal camera 20 out of the gearbox housing to avoid collision with the inner surface of the gearbox housing.

[0073] The computer compares the images transmitted by the internal camera 20 and the external camera to determine whether the gearbox housing is defective and removes the defective gearbox housing. The defective gearbox housing is manually inspected and the gearbox housing that can continue to be used is put back on the roller conveyor 10.

[0074] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A gearbox casting defect detection system, characterized in that: include: A conveying module, the conveying module comprising a roller conveyor (10), the roller conveyor (10) being used to convey the gearbox housing in direction A; A detection module, the detection module comprising an internal camera (20) and a plurality of external cameras, the internal camera (20) being used to obtain image information of the inner surface of the gearbox housing, and the plurality of external cameras being used to obtain image information of the outer surface of the gearbox housing; A judgment module, the judgment module includes a computer, the internal camera (20) and multiple external cameras transmit image information to the computer, and the computer is used to receive and compare the image information collected by the detection module to determine whether there is a defect on the surface of the gearbox housing; An insertion module, the insertion module comprising a deflection frame (30), the end of the deflection frame (30) being provided with a rotating portion, the gearbox housing being pushed by the deflection frame (30) to deflect in the direction B, and the internal camera (20) entering the interior of the gearbox housing along with the deflection frame (30); The insertion module further comprises a rotating assembly (70), wherein the rotating assembly (70) drives the internal camera (20) to rotate in a C direction, and the rotating internal camera (20) photographs the entire internal surface of the gearbox housing; The rotating assembly (70) includes a rotating ball (71), a rotating block (72) and a driving unit (75). The rotating block (72) is rotatably inserted into the deflection frame (30), and a torsion spring is provided at the bottom of the rotating block (72). The internal camera (20) is installed inside the rotating ball (71). A center rod (73) is provided at the bottom of the rotating ball (71). The center rod (73) is fixedly connected to the deflection frame (30). A push rod (74) is provided on one side of the rotating ball (71). One end of the push rod (74) extends into the deflection frame (30), and the end of the push rod (74) is inserted into the rotating block (72). The driving unit (75) is used to push the rotating block (72) to rotate so that the push rod (74) drives the rotating ball (71) to rotate.

2. A gearbox casting defect detection system according to claim 1, characterized in that: The end of the central rod (73) is spherically arranged, and the rotating ball (71) is rotatably sleeved on the surface of the spherical end of the central rod (73).

3. The gearbox casting defect detection system according to claim 1, characterized in that: The end of the push rod (74) is arranged in a protruding shape, and a corresponding plug-in slot (711) is provided on the surface of the rotating ball (71).

4. The gearbox casting defect detection system according to claim 1, characterized in that: The driving portion (75) comprises a follower wheel (751) and a connecting shaft (752); a first bevel gear (753) is provided on one side of the follower wheel (751); a second bevel gear (754) is meshedly connected to one side of the first bevel gear (753); the second bevel gear (754) and the connecting shaft (752), as well as the connecting shaft (752) and the rotating block (72), are connected via a belt (755).

5. The gearbox casting defect detection system according to claim 1, characterized in that: The rotating assembly (70) further includes a pulling portion (76), the pulling portion (76) including a blocking frame (761) and a reverse plate (762), the blocking frame (761) being fixedly connected to the external mounting frame, the reverse plate (762) being fixedly connected to a section of the push rod (74), and a return spring (763) being provided between the reverse plate (762) and the deflection frame (30).

6. The gearbox casting defect detection system according to claim 1, characterized in that: The utility model also includes a removal module, wherein the removal module includes a push-out block (40) and a movable frame (50), wherein the deflection frame (30) is rotated and inserted into the movable frame (50) through a rotating portion, and the push-out block (40) and the movable frame (50) are both movably inserted into the external mounting frame, and the push-out block (40) and the movable frame (50) are both connected to the external mounting frame through a return spring (60).

7. The detection method of a gearbox casting defect detection system according to any one of claims 1 to 6, characterized in that: The following steps are included: S1, conveying gear box housing; The gear box housing is inverted so that its flat surface is placed on the roller conveyor (10), and the roller conveyor (10) conveys the gear box in direction A; S2, deflect the internal camera (20); The movable gearbox housing contacts the end of the deflection frame (30) and pushes it to rotate in the B direction, and the internal camera (20) then enters the gearbox housing; S3. Determine defects; The computer compares the images transmitted by the internal camera (20) and the external camera to determine whether the gearbox housing is defective and removes the defective gearbox housing; S4, manual determination; Manually determine whether the surface defects of the gearbox housing affect its use, and continue to use the gearbox housing that can be used.

Images