A fixture for hub safety detection and its detection method

Abstract

The present invention discloses a jig for hub safety detection and its detection method, which relates to the field of hub detection, and includes a frame, a rotating table, and an adjusting mechanism. The adjusting mechanism includes a fixed seat, a movable frame, an adjusting component, and a suction device. The adjusting component includes an adjusting head, and several T-shaped passages are arranged in the adjusting head. The T-shaped passage is composed of a longitudinal passage and a transverse passage. A guiding tube is rotatably arranged in the longitudinal passage. The upper side of the guiding tube is open and connected to the suction device. The lower side of the guiding tube is sealed to block the longitudinal passage and the transverse passage. An air port is arranged on the guiding tube corresponding to the height of the transverse passage. A common passage is arranged in the adjusting head, and the common passage is communicated with the longitudinal passage. The present invention is applicable to the hub detection requirements under different states and improves the detection quality.

Description

Technical Field

[0001] The present invention relates to the technical field of wheel hub detection, and specifically to a fixture for wheel hub safety detection and its detection method. Background Technique

[0002] The dimensional inspection of automotive wheel hubs is a crucial quality control link, which ensures the dimensional accuracy and product quality of the wheel hubs and is related to the safety of the wheel hubs when put into use. At present, the dimensional inspection of wheel hubs mainly adopts automated machine vision technology, which is realized by high-precision industrial cameras and 3D scanners. These systems can detect multiple dimensional parameters of the wheel hubs, including the center hole diameter, bolt hole diameter, PCD pitch circle diameter, etc.

[0003] Automotive wheel hubs not only need to be dimensionally inspected after production, but also after some performance tests. By comparing the data changes before and after the tests, the test results can be analyzed and judged. For example, the strength test of the wheel hub can reveal the dimensional stability of the wheel hub material under continuous load. If the wheel hub is deformed after the strength test, it may indicate insufficient dimensional stability; the wear test can evaluate the durability and performance changes of the wheel hub material during long-term use. The existing wheel hub fixtures are basically inspection tables based on visual inspection. The wheel hub to be inspected is placed on the tabletop, and the detection position is adjusted by setting a drive module to achieve the dimensional inspection of the wheel hub. However, the visual inspection module generally can only detect from the upper side, and manual adjustment is required for other positions of the wheel hub. For the wheel hubs before and after the test, the comparison of the dimensional data changes is essential, and the existing inspection tables are not comprehensive enough. Summary of the Invention

[0004] The purpose of the present invention is to provide a fixture for wheel hub safety detection and its detection method to solve the problems raised in the above background technique.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A fixture for wheel hub safety detection and its detection method, including a frame, a rotating table, a detection mechanism, and an adjustment mechanism. The rotating table is fixed inside the frame and is used to place the wheel hub to be inspected. The detection mechanism is provided with two groups of detection components, which are respectively arranged opposite to each other on both sides of the rotating table and on the same axis, and are used to detect the dimensional parameters and surface state of the wheel hub. The adjustment mechanism is fixed on one side of the rotating table and is used to adjust the position and surface treatment of the wheel hub.

[0006] According to the above technical solution, the adjustment mechanism includes a fixed seat, a moving frame, an adjustment component, and a suction device. A screw drive module is connected between the moving frame and the fixed seat. The adjustment component is arranged on the moving frame, and the suction device is fixed on one side of the fixed seat.

[0007] According to the above technical solution, the adjusting assembly includes an adjusting head, and a plurality of T-shaped passages are arranged in the adjusting head. The T-shaped passage is composed of a longitudinal passage and a transverse passage. The longitudinal passage penetrates the adjusting head vertically, and the transverse passage extends from the longitudinal passage to the side of the adjusting head. A guiding tube is rotatably arranged in the longitudinal passage. The upper side of the guiding tube is open and connected to the suction device. The lower side of the guiding tube is sealed to block the longitudinal passage and the transverse passage. An air port is arranged on the guiding tube corresponding to the height of the transverse passage. A common passage is arranged in the adjusting head, and the common passage is communicated with the longitudinal passage.

[0008] According to the above technical solution, the central axis of the moving frame passes through the center of the rotation table.

[0009] According to the above technical solution, a driven gear is sleeved on one end of the guiding tube extending out of the adjusting head. The driven gear is in mating connection with a driving gear, and the driving gear is connected to a first motor.

[0010] According to the above technical solution, a sliding plate is sleeved on the adjusting head. The adjusting head is in rotational cooperation with the sliding plate. An installation plate is connected to the sliding plate. A second motor is fixed on the installation plate. The driving end of the second motor is connected to a connecting frame, and the connecting frame is fixedly connected to the adjusting head.

[0011] According to the above technical solution, the sliding plate is connected to an electric push rod. The electric push rod is fixed on the moving frame and is used to control the overall movement of the adjusting assembly on the moving frame.

[0012] According to the above technical solution, the detection component includes an X-axis drive module, a Y-axis drive module, a moving seat, a Z-axis drive module, a lateral detection module, and a longitudinal detection module. Among them, the Y-axis drive module is arranged at the drive end of the X-axis drive module, the moving seat is fixed at the drive end of the Y-axis drive module, the Z-axis drive module is installed on the moving seat, the lateral detection module is arranged on the moving seat and the detection surface faces the direction of the turntable, the longitudinal detection module includes an upper detection module and a lower detection module, the upper detection module is installed at the drive end of the Z-axis drive module, and the lower detection module is arranged on the turntable surface. Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, by providing an adjustment mechanism, an adjustable air flow channel is arranged inside the adjustment head. According to the actual grasping requirements, when the hub is in good condition, the center hole position can be grasped, and the detection mechanism is used to detect the surface of the hub. After the hub undergoes a performance test, if the center hole position is deformed and cannot be grasped, the air flow route can be adjusted to achieve grasping of other surfaces of the hub, which is applicable to hubs in different states; secondly, after adjusting the air extraction state to the air blowing state, the adjustment head can adjust the air blowing direction according to the cleaning requirements of each surface of the hub, so as to clean the impurities and debris attached to the surface of the hub, improving the detection quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0014] Figure 1 is the overall structural schematic diagram of the present invention;

[0015] Figure 2 is the partial schematic diagram of the present invention;

[0016] Figure 3 is the schematic diagram of the adjustment mechanism of the present invention;

[0017] Figure 4 is the schematic diagram of the adjustment head of the present invention;

[0018] Figure 5 is the partial schematic diagram of the adjustment head of the present invention;

[0019] Figure 6 is the partial cross-sectional view of the adjustment head of the present invention;

[0020] Figure 7 is the schematic diagram of the lateral passage of the present invention;

[0021] Figure 8Schematic diagram of the detection component of the present invention; In the figure: 1, frame; 2, rotating table; 3, detection component; 31, X-axis drive module; 32, Y-axis drive module; 33, moving seat; 34, Z-axis drive module; 35, lateral detection module; 36, upper detection module; 37, lower detection module; 4, fixed seat; 5, moving frame; 6, adjustment component; 61, adjustment head; 611, slide plate; 612, mounting plate; 613, motor two; 614, connecting frame; 62, T-shaped passage; 621, longitudinal passage; 622, lateral passage; 63, guide tube; 631, air port; 64, common passage; 65, driven gear; 66, driving gear; 67, motor one; 68, electric push rod; 7, suction device; 8, screw drive module. Detailed implementation manners

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figure 1-8 The present invention provides a technical solution: A jig for hub safety detection includes a frame 1, a rotating table 2, a detection mechanism, and an adjustment mechanism. The rotating table 2 is fixed inside the frame 1 and is used to place the hub to be detected. The detection mechanism is provided with two detection components 3, which are respectively oppositely arranged on both sides of the rotating table 2 and located on the same axis, and are used to detect the size parameters and surface state of the hub. The adjustment mechanism is fixed on one side of the rotating table 2 and is used to adjust the position of the hub and surface treatment;

[0024] The adjustment mechanism includes a fixed seat 4, a moving frame 5, an adjustment component 6, and a suction device 7. A screw drive module 8 is connected between the moving frame 5 and the fixed seat 4. The adjustment component 6 is arranged on the moving frame 5, and the suction device 7 is fixed on one side of the fixed seat 4;

[0025] The adjustment component 6 includes an adjustment head 61. A plurality of T-shaped passages 62 are arranged inside the adjustment head 61. The T-shaped passage 62 is composed of a longitudinal passage 621 and a lateral passage 622. The longitudinal passage 621 penetrates the adjustment head 61 up and down. The lateral passage 622 extends from the longitudinal passage 621 to the side of the adjustment head 61. A guide tube 63 is rotatably arranged in the longitudinal passage 621. The upper side of the guide tube 63 is open and is connected to the suction device 7. The lower side of the guide tube 63 is sealed to block the longitudinal passage 621 and the lateral passage 622. An air port 631 is opened on the guide tube 63 corresponding to the height of the lateral passage 622. A common passage 64 is arranged inside the adjustment head 61, and the common passage 64 is communicated with the longitudinal passage 621.

[0026] The supplementary description based on the above structure is as follows: The lead screw drive module 8 is used to drive the moving frame 5 to move longitudinally; the suction device 7 is preferably but not limited to an air pump, which is used to input air flow or extract air flow into the guide pipe 63; a soft pad is sleeved outside the adjusting head 61 and is matched with the opening of the T-shaped passage 62; the central axis of the moving frame 5 passes through the center of the rotating table 2; the guide pipe 63 is used to adjust the air flow circulation route. If the air port 631 faces the transverse passage 622, the air flow will communicate with the side of the adjusting head 61 through the route of the guide pipe 63 and the transverse passage 622. If the air port 631 faces the common passage 64, the air flow will communicate with the lower side of the adjusting head 61 through the route of the guide pipe 63, the common passage 64, and the longitudinal passage 621, so as to adjust the direction of the air flow circulation.

[0027] Further, a driven gear 65 is sleeved at one end of the guide pipe 63 extending out of the adjusting head 61. The driven gear 65 is connected and matched with a driving gear 66, and the driving gear 66 is connected to a motor one 67.

[0028] In one embodiment, the motor one 67 adopts a micro motor, which is used to drive the driven gears 65 to rotate by driving the driving gear 66, so as to synchronously drive the guide pipes 63 to rotate, thus unifying the air flow route.

[0029] A slide plate 611 is sleeved on the adjusting head 61. The adjusting head 61 is rotationally matched with the slide plate 611. An installation plate 612 is connected to the slide plate 611. A motor two 613 is fixed on the installation plate 612. The driving end of the motor two 613 is connected to a connecting frame 614, and the connecting frame 614 is fixedly connected to the adjusting head 61.

[0030] In actual operation, the motor two 613 is used to control the connecting frame 614 to drive the whole adjusting head 61 to rotate.

[0031] The slide plate 611 is connected to an electric push rod 68. The electric push rod 68 is fixed on the moving frame 5 and is used to control the whole adjusting component 6 to move on the moving frame 5. In one embodiment, a clamping groove is opened on the inner side of the moving frame 5, and the slide plate 611 is provided with a sliding block matched with the clamping groove, which is used to provide a supporting force and guide the movement for the adjusting component 6.

[0032] The detection component 3 includes an X-axis drive module 31, a Y-axis drive module 32, a moving seat 33, a Z-axis drive module 34, a transverse detection module 35, and a longitudinal detection module. Among them, the Y-axis drive module 32 is arranged at the driving end of the X-axis drive module 31. The moving seat 33 is fixed at the driving end of the Y-axis drive module 32. The Z-axis drive module 34 is installed on the moving seat 33. The transverse detection module 35 is arranged on the moving seat 33 and the detection surface faces the direction of the rotating table 2. The longitudinal detection module includes an upper detection module 36 and a lower detection module 37. The upper detection module 36 is installed at the driving end of the Z-axis drive module 34, and the lower detection module 37 is arranged on the table top of the rotating table 2.

[0033] It should be supplemented and explained that: the horizontal detection module 35 and the vertical detection module adopt but are not limited to vision detection modules, which are used to detect the dimensions and surface states of the side and upper and lower surfaces of the wheel hub respectively; the X-axis drive module 31 and the Y-axis drive module 32 are used to adjust the position of the moving seat 33 on the X and Y axes, so as to adjust the positions of the horizontal detection module 35 and the upper detection module 36 in the two directions of the X and Y axes, and the Z-axis drive module 34 is used to adjust the position of the upper detection module 36 on the Z axis.

[0034] The specific implementation method is as follows:

[0035] Step 1: The staff places the wheel hub on the rotating table 2, and the position of the center hole of the wheel hub should correspond to the center position of the rotating table 2;

[0036] Step 2: The horizontal detection module 35 detects the side data of two relative positions on the same axis of the wheel hub and marks the detection points, and the upper detection module 36 detects the upper surface data of two relative positions on the same axis of the wheel hub and marks the detection points. The rotating table 2 drives the wheel hub to rotate 180 degrees at a certain speed, and the horizontal detection module 35 and the upper detection module 36 record the side and upper surface data of the wheel hub in one circle;

[0037] Step 3: The screw drive module 8 moves the adjustment component 6 downward to the surface of the wheel hub. In the initial state, the adjustment head 61 corresponds to the position where the center hole of the wheel hub is located, and the size of the adjustment head 61 matches the center hole of the wheel hub. The adjustment head 61 moves into the center hole of the wheel hub, and the air port 631 faces the horizontal passage 622. The suction device 7 sucks air so that the side of the adjustment head 61 can be adsorbed on the inner wall of the center hole of the wheel hub. The screw drive module 8 drives the adjustment head 61 to move upward, thereby lifting the wheel hub. The lower detection module 37 starts to record the lower surface data of the wheel hub and marks it. The adjustment head 61 rotates to drive the wheel hub to rotate 360 degrees, and the lower detection module 37 makes a complete record of the lower surface of the wheel hub;

[0038] Step 4: After collecting the initial information of the wheel hub, the wheel hub is sent for performance testing and then sent back. When performing secondary detection, the side detection and the upper surface detection repeat the process of Step 2. During this period, if the wheel hub is contaminated with dust and debris on the surface due to performance testing, the surface can be treated through the blowing function of the adjustment head 61;

[0039] Step 5: When detecting the lower surface of the wheel hub, if the center hole of the wheel hub is deformed during the performance test and the adjustment head 61 cannot enter normally, the air flow route is changed, and the air port 631 faces the common passage 64. The suction device 7 sucks air so that the lower surface of the adjustment head 61 can be adsorbed on the surface of the wheel hub, and then repeat the process of Step 3;

[0040] Step 6: Compare the changes in the data before and after to obtain the detection result.

[0041] Specifically, in step two, the lateral detection module 35 records the lateral data at different heights in the vertical direction, including the distance to the side of the hub and the surface state. The two lateral detection modules 35 compare the two sets of data. To avoid interference from other factors, it is set that the axial distances of the two lateral detection modules 35 from the axis of the rotating table 2 are equal. The distance d to the side of the hub at the same height detected should be equal. At the same time, the value obtained by subtracting the two d values from the distance D between the two lateral detection modules 35 respectively should be equal to the outer diameter size of the hub at this height. Based on this, the width and diameter of the hub and the dimensions from the center position to the two side boundaries can be detected. First, analyze whether the width and diameter of the hub meet the requirements according to the result of subtracting the corresponding two d values from D. Secondly, compare whether the two d values are equal. When both of these conditions are met, the lateral dimensions of the hub meet the standards.

[0042] In step four, if during the visual inspection process, there is interference caused by attachment of impurities and debris on the surface of the hub, the adjustment head 61 adjusts the air extraction state to the air blowing state, and at the same time adjusts the air flow path according to the position to be cleaned. For example, if the position to be cleaned is the side of the hub or other through-hole areas of the hub, the adjustment head 61 turns the guide tube 63 to the lateral passage 622, and the adjustment head 61 is in the state of blowing air to the side, and then it is moved to the required position for surface treatment by the action of the lead screw drive module 8 and the electric push rod 68; if the position to be cleaned is the upper surface of the hub, the adjustment head 61 turns the guide tube 63 to the common passage 64, and the adjustment head 61 is in the state of blowing air from below, and then it is moved to the required position for surface treatment by the action of the lead screw drive module 8 and the electric push rod 68.

[0043] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Finally, it should be stated that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A wheel hub safety inspection tool, comprising a frame (1), a rotating table (2), a detection mechanism and an adjustment mechanism, characterized in that: The rotating table (2) is fixed in the frame (1) and is used to place the wheel hub to be inspected; the inspection mechanism is provided with two groups of inspection components (3), which are respectively arranged on two sides of the rotating table (2) and located on the same axis, and are used to inspect the wheel hub size parameters and surface conditions; the adjustment mechanism is fixed on one side of the rotating table (2) and is used to adjust the wheel hub position and surface treatment; The adjustment mechanism comprises a fixed seat (4), a movable frame (5), an adjustment component (6) and a suction device (7), wherein a screw drive module (8) is connected between the movable frame (5) and the fixed seat (4), the adjustment component (6) is arranged on the movable frame (5), and the suction device (7) is fixed on one side of the fixed seat (4); The regulating assembly (6) comprises a regulating head (61), wherein a plurality of T-shaped passages (62) are arranged in the regulating head (61), wherein the T-shaped passages (62) are composed of a longitudinal passage (621) and a transverse passage (622), wherein the longitudinal passage (621) passes through the regulating head (61) vertically, and the transverse passage (622) is led out from the longitudinal passage (621) to the side of the regulating head (61), wherein a guide tube (63) is rotatably arranged in the longitudinal passage (621), wherein the upper side of the guide tube (63) is open and connected to the suction device (7), wherein the lower side of the guide tube (63) is sealed and blocks the longitudinal passage (621) and the transverse passage (622), wherein the guide tube (63) is provided with an air port (631) at a height corresponding to the transverse passage (622), and wherein a common passage (64) is arranged in the regulating head (61), wherein the common passage (64) is communicated with the longitudinal passage (621).

2. A wheel hub safety inspection tool according to claim 1, characterized in that: The central axis of the movable frame (5) passes through the center of the rotating table (2).

3. A wheel hub safety inspection tool according to claim 2, characterized in that: The guide tube (63) is used to adjust the airflow path. If the air port (631) faces the transverse passage (622), the airflow will be connected to the side of the regulating head (61) via the guide tube (63) and the transverse passage (622). If the air port (631) faces the common passage (64), the airflow will be connected to the lower side of the regulating head (61) via the guide tube (63), the common passage (64) and the longitudinal passage (621), thereby adjusting the airflow direction.

4. A wheel hub safety inspection tool according to claim 3, characterized in that: One end of the guide tube (63) extending out of the regulating head (61) is sleeved with a driven gear (65), the driven gear (65) is matched and connected to a driving gear (66), and the driving gear (66) is connected to a motor 1 (67).

5. A wheel hub safety inspection tool according to claim 4, characterized in that: The regulating head (61) is sleeved with a slide plate (611), the regulating head (61) and the slide plate (611) are rotatably matched, the slide plate (611) is connected to a mounting plate (612), a second motor (613) is fixed to the mounting plate (612), a driving end of the second motor (613) is connected to a connecting frame (614), and the connecting frame (614) is connected and fixed to the regulating head (61).

6. A wheel hub safety inspection inspection tool according to claim 5, characterized in that: The slide plate (611) is connected to an electric push rod (68), and the electric push rod (68) is fixed on the movable frame (5) and is used to control the adjustment component (6) to move as a whole on the movable frame (5).

7. A wheel hub safety inspection tool according to claim 6, characterized in that: The detection assembly (3) comprises an X-axis drive module (31), a Y-axis drive module (32), a moving seat (33), a Z-axis drive module (34), a transverse detection module (35) and a longitudinal detection module, wherein the Y-axis drive module (32) is arranged at the drive end of the X-axis drive module (31), the moving seat (33) is fixed at the drive end of the Y-axis drive module (32), the Z-axis drive module (34) is mounted on the moving seat (33), the transverse detection module (35) is arranged on the moving seat (33) with the detection surface facing the direction of the rotating table (2), and the longitudinal detection module comprises an upper detection module (36) and a lower detection module (37), the upper detection module (36) is mounted on the drive end of the Z-axis drive module (34), and the lower detection module (37) is arranged on the table surface of the rotating table (2).

8. A method for testing a wheel hub safety inspection tool, applicable to the wheel hub safety inspection tool according to claim 7, characterized in that: Step 1: The staff places the wheel hub on the rotating table (2), and the position of the center hole of the wheel hub corresponds to the center position of the rotating table (2); Step 2: The lateral detection module (35) detects the side data of two relative positions on the same axis of the wheel hub and marks the detection points, the upper detection module (36) detects the upper surface data of two relative positions on the same axis of the wheel hub and marks the detection points, the rotating platform (2) drives the wheel hub to rotate 180 degrees, and the lateral detection module (35) and the upper detection module (36) record the side and upper surface data of one circle of the wheel hub; Step 3: The screw drive module (8) moves the adjustment component (6) downward to the wheel hub surface. In the initial state, the adjustment head (61) corresponds to the position of the wheel hub center hole, and the size of the adjustment head (61) matches the wheel hub center hole. The adjustment head (61) moves into the wheel hub center hole, and the air port (631) faces the lateral passage (622). The suction device (7) draws air so that the side of the adjustment head (61) can be adsorbed on the inner wall of the wheel hub center hole. The screw drive module (8) drives the adjustment head (61) to move upward, thereby lifting the wheel hub. The lower detection module (37) starts to record and mark the data of the lower surface of the wheel hub. The rotation of the adjustment head (61) drives the wheel hub to rotate 360 ​​degrees. The lower detection module (37) completely records the lower surface of the wheel hub. Step 4: After collecting the initial information of the wheel hub, the wheel hub is sent for performance testing and then sent back. During the secondary inspection, the side inspection and the upper surface inspection repeat the process of step 2. During the period, if the wheel hub has dust and debris on the surface due to the performance test, the surface can be treated by the blowing function of the adjustment head (61); Step 5: When inspecting the lower surface of the wheel hub, if the center hole of the wheel hub is deformed during the performance test and the adjusting head (61) cannot enter normally, the air flow route is changed, the air port (631) is directed toward the common passage (64), and the suction device (7) is used to extract air so that the lower side of the adjusting head (61) can be adsorbed on the surface of the wheel hub, and the process of step 3 is repeated; Step 6: Compare the data changes before and after to obtain the test results.

9. A method for detecting a wheel hub safety inspection tool according to claim 8, characterized in that: In step 2, the lateral detection module (35) records the side data at different heights in the vertical direction, including the distance to the side of the wheel hub and the surface state. The two lateral detection modules (35) compare the two sets of data. In order to avoid interference, the two lateral detection modules (35) are set to have the same axial center distance with the rotating table (2). Because the two lateral detection modules (35) are located at the two ends of the same axis, the distance d to the side of the wheel hub at the same height detected is equal. At the same time, the spacing D between the two lateral detection modules (35) minus two d values ​​is equal to the outer diameter of the wheel hub at this height. Based on this, the wheel hub diameter width and the size of the center position to the two side boundaries are detected. First, the wheel hub diameter width meets the requirements according to the result of D minus the corresponding two d values. Secondly, the two d values ​​are compared to see whether they are equal. When both conditions are met, the lateral size of the wheel hub meets the standard.

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