Full-automatic bearing detection device and method

Abstract

The invention belongs to the field of bearing detection, and particularly relates to a full-automatic bearing detection device and method. The two parallel rails are arranged on the frame body; the chain is arranged on the chain wheel transmission mechanism on the track; the plurality of positioning lifting mechanisms are arranged between the two chains; the positioning lifting mechanisms are used for positioning the to-be-detected bearing and can be descended to enable the to-be-detected bearing to be parked on the two chains; and the detection mechanism is used for detecting the bearing to be detected, the detection mechanism and the positioning lifting mechanism are correspondingly arranged, but the positioning lifting mechanism located at the head end of the chain is not provided with the detection mechanism. According to the full-automatic bearing detection device and method provided by the invention, synchronous defect detection can be carried out on a plurality of bearing rollers to be detected in a production line mode, and two detection modes can be completed on one set of equipment by adopting the unique mutual cooperation of the positioning lifting mechanism and the detection mechanism; one of the two detection modes can be adopted at the same time, or two of the two detection modes can be adopted at the same time.

Description

Technical Field

[0001] This invention belongs to the field of bearing testing, specifically relating to a fully automatic bearing testing device and method. Background Technology

[0002] As a core component of mechanical equipment, bearings directly determine the reliability of the entire machine through their operational stability, transmission efficiency, and service life. Rollers, as the core rolling elements of bearings, are crucial for ensuring bearing performance. In high-end equipment sectors such as automobiles, aerospace, and precision machine tools, the requirements for bearing quality are becoming increasingly stringent. Therefore, establishing a comprehensive, high-precision roller quality inspection system has become a core need for the bearing manufacturing industry.

[0003] Currently, bearing roller inspection technology mainly focuses on the individual inspection stage before assembly, covering multiple dimensions such as surface defect identification and geometric accuracy measurement. It utilizes techniques like visual inspection and eddy current testing to screen the quality of individual rollers. Simultaneously, existing inspection equipment can also inspect the cage's own window parameters and assembly accuracy to ensure the cage's structural integrity.

[0004] However, during the assembly of rollers and cages, factors such as assembly pressure and positioning deviations may cause new surface defects or structural damage to the rollers. These defects cannot be identified in separate inspections before assembly. More importantly, the industry currently lacks dedicated equipment capable of performing production line defect detection on rollers mounted on cages. Traditional inspection methods mostly rely on offline sampling or manual visual inspection, which cannot adapt to the continuous operation of production lines. This not only results in low inspection efficiency but also carries the risk of missed defects, making it difficult to achieve end-to-end quality traceability and real-time control.

[0005] This lack of inspection technology means that bearings with defective rollers after assembly may end up in the next process or even the end market, seriously affecting the safety and stability of equipment operation. With the advancement of intelligent manufacturing, the bearing manufacturing industry has an increasingly urgent need for automated inspection throughout the entire process. Developing defect detection equipment for rollers after cage assembly that is suitable for production lines has become a key direction for breaking through the industry's quality control bottlenecks and improving the manufacturing level of high-end bearings. Summary of the Invention

[0006] The present invention provides a fully automatic bearing testing device and method, which can effectively solve the problems in the background art.

[0007] This invention provides a fully automatic bearing testing device and method, comprising:

[0008] Frame;

[0009] Two parallel tracks are installed on the frame;

[0010] A sprocket drive mechanism in which the chain is mounted on a track;

[0011] Several positioning and lifting mechanisms are provided between two chains. The positioning and lifting mechanisms position the bearing to be tested and can lower the bearing to be tested to stop on the two chains.

[0012] In addition, a testing mechanism is provided for testing the bearing to be tested. The testing mechanism is set up in correspondence with the positioning and lifting mechanism, but the positioning and lifting mechanism located at the beginning of the chain does not have a testing mechanism.

[0013] As a further optimization of the present invention, it also includes a housing covering the frame, track, sprocket drive mechanism, positioning and lifting mechanism and detection mechanism. The housing is provided with a head opening for loading material at the positioning and lifting mechanism at the head end of the chain, and the housing is provided with a tail opening for unloading material at the tail end of the chain.

[0014] As a further optimization of the present invention, each plate of the chain is provided with a support plate for supporting the bearing to be tested.

[0015] As a further optimization of the present invention, the positioning and lifting mechanism includes:

[0016] First linear drive mechanism;

[0017] A support plate fixed to the output end of the first linear drive mechanism;

[0018] A positioning part is provided on the support plate. The positioning part is inserted into the inner ring of the bearing to be tested, and the inner ring of the bearing to be tested can rotate relative to the positioning part.

[0019] In addition, there are several balls disposed on the support plate and surrounding the positioning part, with the balls facing the end face of the inner ring of the bearing to be inspected.

[0020] As a further optimization of the present invention, the testing mechanism includes:

[0021] A first rotary drive mechanism is arranged vertically opposite to the first linear drive mechanism, and the output end of the first rotary drive structure can drive the inner ring of the bearing under test to rotate.

[0022] And a camera used to photograph the bearing under test.

[0023] As a further optimization of the present invention, it also includes:

[0024] The drive unit is connected to the output end of the first rotary drive mechanism. The end of the drive unit is inserted into the inner ring of the bearing to be tested. The side wall of the end of the drive unit is provided with an annular groove.

[0025] Additionally, an elastic ring fitted into the annular groove extends into the inner ring of the bearing under test and can rotate with the first rotation drive mechanism, thereby driving the inner ring of the bearing under test to rotate.

[0026] As a further optimization of the present invention, a limiting mechanism is also included, the limiting mechanism comprising:

[0027] Base;

[0028] The second linear drive mechanism is mounted on the base;

[0029] Additionally, two rollers are located at the output end of the second linear drive mechanism, which can drive the two rollers to abut against both sides of the roller, so that the cage does not rotate with the inner ring of the bearing under test.

[0030] As a further optimization of the present invention, two second linear drive mechanisms are provided, with two rollers respectively disposed at the output ends of the two second linear drive mechanisms; and also includes:

[0031] A push rod connected at one end to the output end of the second linear drive mechanism;

[0032] A connecting rod is connected at one end to the other end of the push rod, and the other end of the connecting rod is connected to a roller;

[0033] And a second rotary drive mechanism provided on the connecting rod, which drives the roller to rotate.

[0034] As a further optimization of the present invention, the second linear drive mechanism drives the roller to abut against both sides of the roller at an angle upward.

[0035] As a further optimization of the present invention, a detection method is also included, comprising the following steps:

[0036] Loading: Place the bearing to be tested on the positioning and lifting mechanism at the beginning of the chain;

[0037] Transportation: The positioning and lifting mechanism lowers, placing the bearing to be tested on the chain. The chain drive then transports the bearing to be tested to the testing station.

[0038] Testing: The testing mechanism drives the inner ring of the bearing under test to rotate, while the camera takes pictures of the roller;

[0039] Material feeding: After the inspection is completed, the chain continues to drive and send the tested bearing to the end of the chain for feeding.

[0040] The present invention provides a fully automatic bearing inspection device and method, which can perform synchronous defect inspection on multiple bearing rollers to be tested in a production line. The unique positioning and lifting mechanism and the inspection mechanism used in the present invention work together to complete two inspection methods on one set of equipment. One of the two inspection methods can be used at the same time, or both of them can be used at the same time. Attached Figure Description

[0041] Figure 1 This is a structural schematic diagram of this embodiment;

[0042] Figure 2 yes Figure 1 A schematic diagram of the structure after the shell has been removed;

[0043] Figure 3 yes Figure 1 A schematic diagram of the central positioning lifting mechanism and the detection mechanism;

[0044] Figure 4 yes Figure 3 A schematic diagram of the structure after the restricting mechanism has been removed;

[0045] Figure 5 yes Figure 4 Schematic diagram of the drive unit in the middle;

[0046] Figure 6 This is a schematic diagram of the bearing under test in this embodiment;

[0047] Figure 7 yes Figure 3 Schematic diagram of the middle limit mechanism;

[0048] The components include: frame 1, track 2, sprocket drive mechanism 3, chain 3a, lifting mechanism 4, first linear drive mechanism 4a, support plate 4b, positioning part 4c, ball bearing 4d, detection mechanism 5, first rotary drive mechanism 5a, camera 5b, driving part 5c, disc end 5c1, cylindrical end 5c2, annular groove 5c3, shelf 6, limiting mechanism 7, base 7a, second linear drive mechanism 7b, roller 7c, push rod 7d, connecting rod 7e, second rotary drive mechanism 7f, illumination lamp 8, housing 9, front opening 9a, rear opening 9b, bearing to be tested 10, inner ring of bearing to be tested 10a, roller 10b, and cage 10c. Detailed Implementation

[0049] In this embodiment, the bearing to be tested, 10, refers to a bearing without an outer ring.

[0050] This embodiment includes a frame 1, a track 2, a sprocket drive mechanism 3, a lifting mechanism 4, and a detection mechanism 5.

[0051] The frame 1 is a cubic frame structure made of interlocking profiles. The bottom of the frame 1 is equipped with casters, which can be positioned stably and moved easily.

[0052] Track 2 is installed on frame 1, and there are two tracks 2 that are coplanar and parallel.

[0053] Two sets of sprocket drive mechanisms 3 are provided for the two tracks 2.

[0054] The driving wheel and driven wheel of the sprocket transmission mechanism 3 are respectively located on both sides of the track 2. The driving wheels of the two sets of sprocket transmission mechanisms 3 are located on the same side and connected by a rotating shaft. Thus, only one motor is needed to rotate the two driving wheels at the same time, achieving synchronous transmission.

[0055] The chain 3a of the sprocket transmission mechanism 3 is mounted on the track 2, meaning that the chain 3a is supported by the track 2 during transmission.

[0056] Furthermore, in this embodiment, a support plate 6 with a length similar to that of the chain plate is provided on the thickness surface of each chain plate of the chain 3a. The support plate 6 can rotate with the chain plate. The support plate 6 is made of a plastic material and is used to support the bearing 10 to be tested. That is, the support plates 6 on the two chains 3a support the bottom end of the bearing 10 to be tested, so that the bearing 10 to be tested can move along the transmission direction of the chain 3a. The track 2 supports the bearing 10 to be tested by supporting the chain 3a.

[0057] The positioning and lifting mechanism 4 is located between the two chains 3a. The positioning and lifting mechanism 4 is used to position the bearing 10 to be tested and can lower the bearing 10 to be tested so that it stops on the two chains 3a.

[0058] Specifically, the positioning and lifting mechanism 4 in this embodiment includes a first linear drive mechanism 4a, a support plate 4b, a positioning part 4c, and a ball bearing 4d.

[0059] The first linear drive mechanism 4a specifically adopts a cylinder. The support plate 4b is fixed to the output end of the cylinder.

[0060] The positioning part 4c is disposed on the support plate 4b, and the positioning part 4c is specifically cylindrical. The positioning part 4c is used to insert the inner ring 10a of the bearing to be tested and to position the bearing 10 to be tested. In this embodiment, the diameter of the positioning part 4c is set to be slightly smaller than the inner diameter of the bearing 10 to be tested.

[0061] The ball bearing 4d specifically adopts a universal ball structure. In this embodiment, six universal balls are provided, which are arranged around the side of the positioning part 4c. The universal balls are installed on the support plate 4b, and their height after installation is lower than that of the positioning part 4c. The installation position of the universal balls corresponds to the lower end face of the inner ring 10a of the bearing under test. That is, when the positioning part 4c is inserted into the inner ring 10a of the bearing under test, the universal balls can hold against the lower end face of the inner ring 10a of the bearing under test.

[0062] During the loading process, the cylinder extends and places the bearing to be tested 10 onto the positioning part 4c; then the cylinder retracts and the bearing to be tested 10 is placed on the shelf 6; then the chain 3a drives the bearing to be tested 10 to the testing station.

[0063] The testing station is equipped with testing mechanisms 5. Several testing mechanisms 5 are installed on the transmission line of chain 3a to achieve simultaneous testing of several bearings 10 to be tested, thereby improving testing efficiency.

[0064] In this embodiment, the detection mechanism 5 includes a first rotation drive mechanism 5a and a camera 5b.

[0065] The first rotary drive mechanism 5a uses a geared motor, the output of which drives the inner ring 10a of the bearing under test to rotate. Specifically, a drive unit 5c is also provided.

[0066] The drive unit 5c is connected to the output end of the geared motor. The rotation of the geared motor can drive the drive unit 5c to rotate, and the drive unit 5c can in turn drive the inner ring 10a of the bearing under test to rotate around its axis.

[0067] In this embodiment, the two ends of the driving part 5c are a disc end 5c1 and a cylindrical end 5c2.

[0068] The disc end 5c1 is disc-shaped, and its size is larger than the inner diameter of the bearing 10 to be tested; the cylindrical end 5c2 is cylindrical, and its diameter is slightly smaller than the diameter of the inner ring 10a of the bearing to be tested. After the cylindrical end 5c2 is inserted into the inner ring 10a of the bearing to be tested, the disc end 5c1 can cover the upper end surface of the inner ring 10a of the bearing to be tested.

[0069] An annular groove 5c3 is also provided on the side wall of the cylindrical end 5c2, and an elastic ring is also provided. The elastic ring is fitted inside the annular groove 5c3. After the cylindrical end 5c2 is inserted into the inner ring 10a of the bearing to be tested, the elastic ring can squeeze the inner wall of the inner ring 10a of the bearing to be tested. The elastic ring is made of rubber. The elastic ring can drive the inner ring 10a of the bearing to be tested to rotate without damaging the inner wall of the bearing to be tested.

[0070] The rotation of the geared motor drives the drive unit 5c to rotate, and the rotation of the drive unit 5c drives the inner ring 10a of the bearing under test to rotate through the friction between the elastic ring and the inner ring 10a of the bearing under test.

[0071] In this embodiment, a positioning and lifting mechanism 4 is also provided below each first rotary drive mechanism 5.

[0072] The bearing 10 to be tested, which is conveyed by chain 3a to the first rotary drive mechanism 5a, is lifted by the positioning and lifting mechanism 4 corresponding to the first rotary drive mechanism 5a, and the inner ring 10a of the bearing to be tested is driven to rotate by the first rotary drive mechanism 5a.

[0073] One camera 5b is provided for each first rotation drive mechanism 5a. The camera 5b is aimed at the bearing 10 under test that is driven by the first rotation drive mechanism 5a to take pictures.

[0074] Preferably, this embodiment also includes a housing 9, which covers the frame 1, the track 2, the sprocket transmission mechanism 3, the positioning and lifting mechanism 4, and the detection mechanism 5.

[0075] The housing 9 has a head opening 9a and a tail opening 9b at the head and tail ends of the chain 3a, respectively.

[0076] The opening 9a at the beginning is directly opposite the positioning and lifting mechanism 4 at the beginning of the chain 3a, and is used for loading the bearing 10 to be tested.

[0077] The tail end opening 9b is used for unloading the measured bearing.

[0078] In this embodiment, a light source 8 is also provided near the camera 5b. The light source 8 is used to illuminate the camera 5b. After the housing 9 covers the frame 1, the track 2, the sprocket drive mechanism 3, the positioning and lifting mechanism 4, and the detection mechanism 5, it can prevent other external light from affecting the image acquisition of the camera 5b.

[0079] Preferably, this embodiment also includes a limiting mechanism 7, which includes a base 7a, a second linear drive mechanism 7b, and a roller 7c.

[0080] The base 7a serves as the base for the second linear drive mechanism 7b and is used to mount the second linear drive mechanism 7b.

[0081] Two rollers 7c are provided, both fixed to the output end of the second linear drive mechanism 7b. When the second linear drive mechanism 7b extends, it drives the two rollers 7c to abut against both sides of the roller 10b. At this time, the part of the roller 10b protruding from the cage 10c is restricted between the two rollers 7c, preventing the cage 10c from rotating. When the second linear drive mechanism 7b retracts, the two rollers 7c move away from the roller 10b, and the cage 10c can continue to rotate with the inner ring 10a of the bearing under test.

[0082] Using two rollers 7c to limit the rotation of the cage 10c can significantly reduce the impact force on the bearing 10 under test when driven by the second linear drive mechanism 7b.

[0083] Considering the small spacing between adjacent rollers 10b and the small amount of rollers 10b protruding from the cage 10c, this embodiment arranges the two rollers 7c in an alternating manner to reduce space occupation.

[0084] In this embodiment, two second linear drive mechanisms 7b are provided, located on opposite sides of the base 7a. Furthermore, a push rod 7d and a connecting rod 7e are also provided.

[0085] One end of the push rod 7d is connected to the output end of the second linear drive mechanism 7b. The connecting rod 7e is perpendicular to the push rod 7d, with one end connected to the other end of the push rod 7d and the other end connected to the roller 7c. The two connecting rods 7e are arranged in parallel. An oblong hole is provided on the connecting rod 7e for bolt connection to the push rod 7d. The distance between the two rollers 7c can be adjusted by the installation orientation of the oblong hole.

[0086] In other embodiments, the push rod 7d and the connecting rod 7e may be omitted, and the roller 7c may be directly connected to the output end of the second linear drive mechanism 7b.

[0087] Furthermore, this embodiment also includes a second rotary drive mechanism 7f on the connecting rod 7e. The second rotary drive mechanism 7f is connected to the roller 7c and can drive the roller 7c to rotate around its axis. When the roller 7c touches the roller 10b, it increases the resistance to the rotation of the roller 10b, thereby increasing the friction between the inner ring 10a of the bearing under test and the roller 10b, causing damage to the roller 10b. By setting the second rotary drive mechanism 7f to drive the roller 7c to rotate, the rotational speed of the roller 7c corresponds to the rotational speed of the roller 10b, so that the roller 10b can be kept as close as possible to its rotational speed driven by the inner ring 10a of the bearing under test, reducing the frictional damage to the roller 10b.

[0088] Furthermore, in this embodiment, the mounting surface of the base 7a is angled upward, causing the output end of the second linear drive mechanism 7b to extend angled upward, ultimately enabling the roller 7c to abut against both sides of the roller 10b at an angled upward. This structural arrangement reduces the impact force on the bearing 10 under test when the roller 7c is output by the second linear drive mechanism 7b, and reduces the impact force and probability between the inner ring 10a of the bearing under test and the positioning part 4c.

[0089] The setting of the limiting mechanism 7 enables this embodiment to have two detection methods.

[0090] One method involves the first rotary drive mechanism 5a driving the inner ring 10a of the bearing under test to rotate. As the inner ring 10a rotates, the rollers 10b rotate on their own axis. Thus, the rollers 10b simultaneously rotate and revolve. The camera 5b can then capture the entire circumference of all the rollers 10b of the bearing under test for defect identification.

[0091] Another method involves restricting the cage 10c from rotating, so that the rollers 10b can only rotate with the inner ring 10a of the bearing under test. After the camera 5b has captured the entire circumference of the rollers 10b in one area, the restricting mechanism 7 releases the cage 10c, allowing the cage 10c to rotate with the inner ring 10a of the bearing under test, so that the rollers 10b in another area can rotate to be captured by the camera 5b. This process is repeated until the entire circumference of all the rollers 10b on the bearing under test is captured by the camera 5b.

[0092] It should be understood that the descriptions of directions or positional relationships such as up, down, left, right, front, back, top, bottom, tail, horizontal, and vertical in this application are all based on the accompanying drawings in the specification and are only used to more clearly express the technical solution and simplify the description, rather than indicating or implying that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A fully automatic bearing testing device, characterized in that, include: Frame; Two parallel tracks are installed on the frame; A sprocket drive mechanism in which the chain is mounted on a track; Several positioning and lifting mechanisms are provided between two chains. The positioning and lifting mechanisms position the bearing to be tested and can lower the bearing to be tested to stop on the two chains. In addition, a testing mechanism is provided for testing the bearing to be tested. The testing mechanism is set up in correspondence with the positioning and lifting mechanism, but the positioning and lifting mechanism located at the beginning of the chain does not have a testing mechanism.

2. The fully automatic bearing testing device according to claim 1, characterized in that, It also includes a housing that covers the frame, track, sprocket drive mechanism, positioning and lifting mechanism and detection mechanism. The housing is provided with a head opening for loading materials at the positioning and lifting mechanism at the head end of the chain, and a tail opening for unloading materials at the tail end of the chain.

3. The fully automatic bearing testing device according to claim 1, characterized in that, Each plate of the chain has a support plate for supporting the bearing to be tested.

4. The fully automatic bearing testing device according to claim 1, characterized in that, Positioning and lifting mechanisms include: First linear drive mechanism; A support plate fixed to the output end of the first linear drive mechanism; A positioning part is provided on the support plate. The positioning part is inserted into the inner ring of the bearing to be tested, and the inner ring of the bearing to be tested can rotate relative to the positioning part. In addition, there are several balls disposed on the support plate and surrounding the positioning part, with the balls facing the end face of the inner ring of the bearing to be inspected.

5. The fully automatic bearing testing device according to claim 4, characterized in that, Testing institutions include: A first rotary drive mechanism is arranged vertically opposite to the first linear drive mechanism, and the output end of the first rotary drive structure can drive the inner ring of the bearing under test to rotate. And a camera used to photograph the bearing under test.

6. The bearing inner ring control device and method according to claim 5, characterized in that, Also includes: The drive unit is connected to the output end of the first rotary drive mechanism. The end of the drive unit is inserted into the inner ring of the bearing to be tested. The side wall of the end of the drive unit is provided with an annular groove. Additionally, an elastic ring fitted into the annular groove extends into the inner ring of the bearing under test and can rotate with the first rotation drive mechanism, thereby driving the inner ring of the bearing under test to rotate.

7. A bearing inner ring control device according to claim 6, characterized in that, It also includes restrictive agencies, which include: Base; The second linear drive mechanism is mounted on the base; Additionally, two rollers are located at the output end of the second linear drive mechanism, which can drive the two rollers to abut against both sides of the roller, so that the cage does not rotate with the inner ring of the bearing under test.

8. The device for bearing testing according to claim 1, characterized in that, The second linear drive mechanism is provided in two parts, with two rollers respectively located at the output ends of the two second linear drive mechanisms; it also includes: A push rod connected at one end to the output end of the second linear drive mechanism; A connecting rod is connected at one end to the other end of the push rod, and the other end of the connecting rod is connected to a roller; And a second rotary drive mechanism provided on the connecting rod, which drives the roller to rotate.

9. The device for bearing testing according to claim 1, characterized in that, The second linear drive mechanism drives the rollers to press against both sides of the rollers at an angle upwards.

10. The device for bearing testing according to claim 1, characterized in that, It also includes detection methods, comprising the following steps: Loading: Place the bearing to be tested on the positioning and lifting mechanism at the beginning of the chain; Transportation: The positioning and lifting mechanism lowers, placing the bearing to be tested on the chain. The chain drive then transports the bearing to be tested to the testing station. Testing: The testing mechanism drives the inner ring of the bearing under test to rotate, while the camera takes pictures of the roller. Material feeding: After the inspection is completed, the chain continues to drive and send the tested bearing to the end of the chain for feeding.

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