Bearing outer ring detection device, detection mechanism and working method

Abstract

This invention belongs to the field of bearing testing technology, specifically relating to a bearing outer ring testing device, testing mechanism, and working method. The device includes: a base with a negative pressure connector inserted into its outer wall to communicate with an air passage inside the base; several adsorption ports of the air passage penetrate the interior of the base and are flush with the upper surface of the base; a driving mechanism disposed on the upper surface of the base, wherein a cylinder in the driving mechanism is adapted to drive the bearing to move and cover each adsorption port during startup; and a testing mechanism disposed inside the base, wherein when the bearing covers each adsorption port, it abuts against the outer wall of a testing block in the testing mechanism; wherein when the bearing rotates and pushes the testing block to move, the testing block opens a communication port to allow the bearing to disengage from the adsorption of each adsorption port.

Description

Technical Field

[0001] This invention belongs to the field of bearing testing technology, specifically relating to a bearing outer ring testing device, testing mechanism, and working method. Background Technology

[0002] Bearings are indispensable key components in mechanical equipment. Their main functions are to support rotating parts of the machine, reduce the coefficient of friction during movement, and ensure rotational accuracy. The precision of bearings directly determines the lifespan, efficiency, and reliability of mechanical equipment; therefore, the geometric precision testing of bearings is particularly important.

[0003] Currently, the roundness of bearing outer rings is mainly inspected using traditional manual measurement methods. Specifically, operators use dial indicators or micrometers in conjunction with V-blocks to measure the roundness. The bearing outer ring is placed in the V-block, and the bearing rotates one full revolution within the V-block. The maximum and minimum readings are read from the micrometer, and half the difference between the two readings is the roundness error of the outer ring of the workpiece being measured.

[0004] Existing technology uses manual measurement with a measuring instrument to inspect the roundness of the bearing outer ring, which has obvious defects and shortcomings. The measuring force of different operators varies, resulting in poor consistency of the test results. In other words, due to the unstable contact between the measuring instrument and the bearing surface, the probe may slide out radially relative to the bearing center during bearing rotation, which greatly reduces the detection accuracy and makes it impossible to accurately identify defective products with out-of-roundness tolerances.

[0005] Therefore, a bearing outer ring inspection device, inspection mechanism, and working method are designed to solve the technical problem in the prior art where unstable contact between the measuring instrument and the bearing surface leads to decreased inspection accuracy, thus making it impossible to accurately identify defective products with out-of-roundness tolerances. However, once the bearing is tightened during measurement, it is impossible to quickly remove and recycle unqualified bearings.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention

[0007] This disclosure provides at least one bearing outer ring testing device, testing mechanism, and working method.

[0008] In a first aspect, embodiments of this disclosure provide a bearing outer ring testing device, comprising:

[0009] The base has a negative pressure connector inserted into its outer wall to connect with the air passage opened inside the base.

[0010] Several adsorption ports of the air passage penetrate the interior of the base and are flush with the upper surface of the base.

[0011] A drive mechanism is provided on the upper end face of the base, and the cylinder in the drive mechanism is adapted to push the bearing to move and cover each adsorption port when started.

[0012] The detection mechanism is located inside the base, and the bearings, when covering each adsorption port, abut against the outer wall of the detection block within the detection mechanism; wherein...

[0013] When the bearing rotates and pushes the detection block to move, the detection block opens the communication port to allow the bearing to disengage from the adsorption ports.

[0014] In one optional implementation, the detection mechanism includes:

[0015] A detection shell is disposed on the upper end face of the base, and the interior of the detection shell is hollow to form a sliding cavity;

[0016] The detection block is slidably disposed inside the sliding cavity, and an abutment is provided on the end face of the detection block facing the bearing; wherein

[0017] The outer wall of the abutting member abuts against the outer wall of the bearing.

[0018] In one optional embodiment, a groove is provided on the upper end face of the detection block, and a limit block is slidably connected in the groove;

[0019] A spring is provided on the lower end face of the limiting block, and the spring is connected to the detection block;

[0020] A limiting opening is provided on the upper end face of the detection shell; wherein

[0021] When the limiting block slides in the sliding cavity with the detection block to the limiting port, the spring rebounds to push the limiting block into the limiting port.

[0022] In one alternative embodiment, the communication port is located inside the base; wherein

[0023] The two ends of the connecting port are respectively connected to the sliding cavity and the air passage; and

[0024] The lower end face of the detection block blocks the connection between the communication port and the sliding cavity.

[0025] In one optional implementation, the drive mechanism includes:

[0026] A negative pressure chamber is formed inside the base, and a negative pressure plate is slidably connected within the negative pressure chamber; wherein...

[0027] The airway is connected to the negative pressure chamber, and each adsorption port is also connected to the negative pressure chamber; and

[0028] The negative pressure plate is located below the connection between the airway and the negative pressure chamber;

[0029] A driving block is provided on the upper end face of the negative pressure plate, and a rotary motor is provided on the upper end face of the driving block; wherein

[0030] The output end of the rotary motor is connected to a plug-in block.

[0031] In one optional embodiment, the cylinder is disposed on the upper end face of the base, and the output end of the cylinder is connected to a push block; wherein

[0032] The push block slides within a drive groove on the upper surface of the base; and

[0033] An arc-shaped baffle is provided on the end face of the pushing block facing the bearing; wherein

[0034] The lower end face of the arc-shaped baffle abuts against the upper end face of the bearing to restrict the vertical movement of the bearing when the plug block slides upward and inserts into the interior of the bearing.

[0035] Secondly, embodiments of this disclosure also provide a testing mechanism for a bearing outer ring testing device, comprising:

[0036] A detection shell is disposed on the upper end face of the base, and the interior of the detection shell is hollow to form a sliding cavity;

[0037] The detection block is slidably disposed inside the sliding cavity, and an abutment is provided on the end face of the detection block facing the bearing; wherein

[0038] The outer wall of the contacting element abuts against the outer wall of the bearing.

[0039] In one optional embodiment, a groove is provided on the upper end face of the detection block, and a limit block is slidably connected in the groove;

[0040] A spring is provided on the lower end face of the limiting block, and the spring is connected to the detection block;

[0041] A limiting opening is provided on the upper end face of the detection shell; wherein

[0042] When the limiting block slides in the sliding cavity with the detection block to the limiting port, the spring rebounds to push the limiting block into the limiting port.

[0043] In one alternative embodiment, the communication port is located inside the base; wherein

[0044] The two ends of the connecting port are respectively connected to the sliding cavity and the air passage; and

[0045] The lower end face of the detection block blocks the connection between the communication port and the sliding cavity.

[0046] Thirdly, this disclosure also provides a method for operating a bearing outer ring testing device, the method comprising:

[0047] By connecting the negative pressure connector to the air extraction device, an adsorption force is generated at the air passage and each adsorption port.

[0048] By activating the cylinder, its output end drives the push block to move the bearing toward each adsorption port until the bearing completely covers each adsorption port and is adsorbed by each adsorption port to restrict its movement.

[0049] By covering the adsorption port with a bearing, a negative pressure is generated in the negative pressure chamber to adsorb the negative pressure plate and slide it upward, thereby allowing the plug block to be inserted into the inside of the bearing.

[0050] By starting the rotary motor, the plug block is driven to rotate, which in turn drives the bearing to rotate so that it continuously slides into contact with the outer wall of the contacting part;

[0051] When the roundness of the bearing does not meet the production standard, the bearing will push the contacting parts and the detection block to move when it rotates. The movement of the detection block will open the connection port, allowing the air passage to connect with the outside. That is, the negative pressure at each adsorption port will be lost, and the bearing will naturally detach.

[0052] The beneficial effects of this invention are that the device is equipped with a driving mechanism and a detection mechanism. The cylinder in the driving mechanism pushes the bearing to move to cover each adsorption port. The negative pressure generated at each adsorption port adsorbs the bearing, avoiding the bearing from shaking during subsequent rotation, which would greatly reduce the detection accuracy. When the outer ring of the bearing rotates, if the roundness of the outer ring of the bearing meets the production standard, the detection block does not move. If the roundness of the outer ring of the bearing does not meet the production standard, the outer ring of the bearing will push the detection block to move, so that the air passage is connected to the outside, thereby causing each adsorption port to detach from the adsorption bearing. Bearings that do not meet the production standard can be directly removed.

[0053] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0054] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0055] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0056] Figure 1 An overall perspective view provided for an embodiment of this disclosure;

[0057] Figure 2 This is a front view of the overall internal cross-sectional structure provided in an embodiment of this disclosure.

[0058] In the picture:

[0059] 1. Base; 10. Negative pressure connector; 11. Air passage; 12. Adsorption port; 13. Drive slide rail;

[0060] 2. Bearings;

[0061] 3. Drive mechanism; 30. Cylinder; 31. Push block; 32. Arc-shaped baffle; 33. Insertion block; 34. Negative pressure plate; 35. Negative pressure chamber; 36. Rotary motor; 37. Drive block;

[0062] 4. Detection mechanism; 40. Detection shell; 400. Limiting port; 41. Sliding cavity; 42. Detection block; 43. Contact element; 44. Limiting block; 45. Spring; 46. Communicating port. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0064] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0065] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0066] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0067] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0068] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0069] Research has revealed that the existing technology of manually inspecting the roundness of bearing outer rings using a measuring instrument has significant defects and shortcomings. The measuring force varies among different operators, resulting in poor consistency of the test results. Specifically, due to the unstable contact between the measuring instrument and the bearing surface, the probe may slide radially out of the bearing's center during bearing rotation due to the bearing's radial runout, leading to a significant decrease in detection accuracy and making it impossible to accurately identify defective products with out-of-roundness tolerances.

[0070] Based on the above research, this disclosure provides a bearing outer ring detection device, detection mechanism, and working method. By incorporating a driving mechanism and a detection mechanism, the cylinder in the driving mechanism pushes the bearing to cover each adsorption port. The negative pressure generated at each adsorption port adsorbs the bearing, preventing shaking during subsequent rotation and thus avoiding a significant decrease in detection accuracy. During the rotation of the bearing outer ring, if the roundness of the bearing outer ring meets the production standard, the detection block does not move. If the roundness of the bearing outer ring does not meet the production standard, the bearing outer ring will push the detection block to move, connecting the air passage to the outside environment. This allows each adsorption port to detach from the adsorption bearing, enabling the direct removal of bearings that do not meet the production standard.

[0071] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0072] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0073] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0074] In some embodiments, such as Figure 1 As shown, before the outer ring roundness of bearing 2 is tested, the entire device is in standby mode. The operator places the bearing 2 to be tested on the upper surface of the base 1 and roughly positions it so that it faces the direction of the cylinder 30 in the drive mechanism 3 and the detection mechanism 4. Then the operator reliably connects the negative pressure connector 10 inserted into the outer wall of the base 1 to an external air extraction device such as a vacuum pump (not shown in the figure, this is in the prior art) through a pipe.

[0075] When the roundness of the outer ring of bearing 2 needs to be tested, bearing 2 is placed on the upper surface of base 1, and cylinder 30 is activated. Its output end drives push block 31 to slide in drive groove 13. At this time, push block 31 pushes bearing 2 to move toward each adsorption port 12. The lower end surface of arc baffle 32 abuts against the upper end surface of bearing 2 to restrict the vertical movement of bearing 2. As shown in the figure, each adsorption port 12 is arranged in a circle. When bearing 2 moves to cover all adsorption ports 12, that is, when bearing 2 is in place, there is a certain friction between the outer wall of insertion block 33 and the inner wall of bearing 2. During the insertion of the connector 33 into the inner side of the bearing 2, the bearing 2 is restricted by the arc-shaped baffle 32, which allows the connector 33 to be smoothly inserted into the inner side of the bearing 2. Subsequently, as the bearing 2 rotates, the outer wall of the bearing 2 continuously slides and abuts against the contact member 43. If the roundness of the bearing 2 meets the production requirements, the contact member 43 will not move horizontally. If the roundness of the bearing 2 does not meet the production requirements, the contact member 43 will move horizontally. As the contact member 43 moves, the negative pressure suction in each adsorption port 12 is lost, and the operator can directly remove the bearing and replace it with the next bearing 2 to be tested.

[0076] In some embodiments, such as Figure 2 As shown, when the external air extraction device is activated, external air is first extracted from the negative pressure connector 10. The air passage 11 guides the negative pressure to the negative pressure chamber 35 and several adsorption ports 12 that penetrate the interior of the base 1 and are flush with the upper surface of the base 1. Since the bearing 2 is not yet in place in the initial state, each adsorption port 12 is directly exposed to the atmosphere, so a large amount of air will be drawn in from here. At this time, the negative pressure value in the system is relatively low. Its main function is to stand by and prepare for subsequent adsorption and fixation. At this time, the initial position of the detection block 42 in the sliding chamber 41 is usually close to the bearing 2. The limiting block 44 on it is squeezed by the top of the inner wall of the detection shell 40, compressing the spring 45. It is not aligned with the limiting port 400 on the upper surface of the detection shell 40. At this time, the lower end of the detection block 42 blocks the connection between the connecting port 46 and the sliding chamber 41.

[0077] After preparation, the operator starts the cylinder 30. The cylinder 30 drives the push block 31, which is fixedly connected to its output end, to slide along the drive groove 13 opened on the upper surface of the base 1. The function of the drive groove 13 is to ensure that the movement trajectory of the push block 31 is a straight line. On the end face of the push block 31 facing the bearing 2, there is an arc-shaped baffle 32. The arc of the arc-shaped baffle 32 is matched with the contour of the upper surface of the outer ring of the bearing 2. When the push block 31 moves forward, the lower end face of the arc-shaped baffle 32 will abut against the upper end face of the bearing 2, which plays a vertical limiting role, restricting the movement or jumping of the bearing 2 in the vertical direction, and ensuring that the bearing 2 remains stable throughout the movement and subsequent inspection process, and will not be dislodged from the predetermined position due to external force or vibration.

[0078] The bearing 2 is continuously pushed until its lower surface completely covers all the circumferentially arranged adsorption ports 12. At this time, the bearing 2 acts like a sealed cover, separating the adsorption ports 12 from the atmosphere. Due to the continuous vacuuming of the air passage, the main air intake adsorption ports 12 are sealed. The pressure in the entire closed air passage system, including the air passage 11, the sliding chamber 41, and the negative pressure chamber 35, drops, forming a large negative pressure. The negative pressure acts evenly on the lower end surface of the bearing 2 through the adsorption ports 12, generating an adsorption force and firmly adsorbing the bearing 2 onto the upper end surface of the base 1.

[0079] The sudden increase in negative pressure caused by the bearing 2 covering the adsorption port 12 results in a negative pressure suction force generated in the air passage 11 acting on the negative pressure chamber 35. At this time, the negative pressure plate 34 is forced to slide upward in the negative pressure chamber 35, driving the drive block 37 to slide upward in the negative pressure chamber 35. At this time, the insertion block 33 follows and moves upward until the insertion block 33 is inserted into the inner side of the bearing 2. Due to the friction between the outer wall of the insertion block 33 and the inner wall of the bearing 2, the rotary motor 36 is started. Its output end drives the insertion block 33 to rotate, which in turn drives the bearing 2 to rotate. During the rotation, the outer wall of the bearing 2 continuously slides and contacts the contacting part 43. If the roundness of the outer ring of the bearing 2 meets the production standard and is a circle, then during its rotation, the contact point between the outer ring of the bearing 2 and the contacting part 43 will be stable and will not produce radial displacement fluctuations. Therefore, the detection block 42 remains stationary in the sliding chamber 41 and is not subjected to radial force. The entire detection system is in a balanced state.

[0080] If the roundness of bearing 2 does not meet production requirements and has shape errors such as ellipticity or angularity, the protruding part on the outer ring of bearing 2, i.e. the part with excessive error, will contact the contacting part 43. This protruding part will generate a horizontal thrust on the contacting part 43. This thrust is transmitted to the detection block 42, pushing the detection block 42 to move horizontally within the sliding cavity 41, moving it away from the rotating bearing 2. When the limiting block 44 moves to the limiting port 400, the spring 45 rebounds to push the limiting block 44 into the limiting port 40. Within 0, the synchronous rotary motor 36 stops rotating. When the limit block 44 springs into the limit port 400, it triggers a micro switch or position sensor. This micro switch or position sensor is located within the limit port 400 (not shown in the figure). The sensor sends a signal to the controller controlling the rotary motor 36. Upon receiving the signal, the controller of the rotary motor 36 instructs the rotary motor 36 to stop working. At this time, the contact point between the outer wall of the bearing 2 and the contact member 43 does not meet the production requirements. When the limit block 44 enters the limit port 400... Simultaneously, the lower end face of the detection block 42 no longer blocks the connecting port 46. At this time, the air passage 11 is connected to the outside air through the connecting port 46, that is, the negative pressure suction in the negative pressure chamber 35 is lost. A reset spring (not shown in the figure, this is prior art) is provided between the lower end face of the negative pressure plate 34 and the bottom end of the inner wall of the negative pressure chamber 35, which drives the negative pressure plate 34 to move down, that is, drives the plug block 33 to exit from the inner hole of the bearing 2. Since each adsorption port 12 loses the negative pressure suction, the bearing 2 can move freely, and the operator can remove the bearing. 2. Directly remove and mark for storage; A push spring (not shown in the figure, this is prior art) is provided between the end face of the detection block 42 away from the bearing 2 and the detection shell 40. When the bearing 2 is removed, the push spring pushes the detection block 42 to reset and re-seal the communication port 46. The release of the limit block 44 is controllable. After the unqualified bearing is removed, the operator manually presses the limit block 44 to compress the spring 45, so that the limit block 44 first disengages from the limit port 400, and then the push spring can smoothly push the detection block 42 to reset.

[0081] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0082] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0083] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0084] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0085] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A bearing outer ring testing device, characterized in that, include: The base (1) has a negative pressure connector (10) inserted into its outer wall to communicate with the air passage (11) opened inside the base (1); A plurality of adsorption ports (12) of the air passage (11) penetrate the interior of the base (1) and are flush with the upper surface of the base (1); A drive mechanism (3) is provided on the upper surface of the base (1), and the cylinder (30) in the drive mechanism (3) is adapted to push the bearing (2) to move and cover each adsorption port (12) when starting. The detection mechanism (4) is located inside the base (1), and the bearing (2) abuts against the outer wall of the detection block (42) in the detection mechanism (4) when it covers each adsorption port (12); in When the bearing (2) rotates and pushes the detection block (42) to move, the detection block (42) opens the communication port (46) to allow the bearing (2) to disengage from the adsorption of each adsorption port (12); The testing organization (4) includes: A detection shell (40) is disposed on the upper end face of the base (1), and the interior of the detection shell (40) is hollow to form a sliding cavity (41). The detection block (42) is slidably disposed inside the sliding cavity (41), and an abutment (43) is provided on the end face of the detection block (42) facing the bearing (2); wherein The outer wall of the contacting member (43) abuts against the outer wall of the bearing (2); The drive mechanism (3) includes: A negative pressure chamber (35) is formed inside the base (1), and a negative pressure plate (34) is slidably connected inside the negative pressure chamber (35); wherein The airway (11) is connected to the negative pressure chamber (35), and each adsorption port (12) is connected to the negative pressure chamber (35); and The negative pressure plate (34) is located below the connection between the airway (11) and the negative pressure chamber (35); A drive block (37) is provided on the upper end face of the negative pressure plate (34), and a rotary motor (36) is provided on the upper end face of the drive block (37); wherein The output end of the rotary motor (36) is connected to a plug block (33).

2. The bearing outer ring testing device as described in claim 1, characterized in that, The upper end face of the detection block (42) is provided with a groove, and a limit block (44) is slidably connected in the groove. A spring (45) is provided on the lower end face of the limiting block (44), and the spring (45) is connected to the detection block (42); The upper end face of the detection shell (40) is provided with a limiting port (400); wherein When the limiting block (44) slides in the sliding cavity (41) to the limiting port (400) along with the detection block (42), the spring (45) rebounds to push the limiting block (44) into the limiting port (400).

3. The bearing outer ring testing device as described in claim 2, characterized in that, The connecting port (46) is located inside the base (1); wherein The two ends of the connecting port (46) are respectively connected to the sliding cavity (41) and the air passage (11); and The lower end face of the detection block (42) blocks the connection between the communication port (46) and the sliding cavity (41).

4. The bearing outer ring testing device as described in claim 3, characterized in that, The cylinder (30) is disposed on the upper end surface of the base (1), and the output end of the cylinder (30) is connected to a push block (31); wherein The push block (31) slides within the drive groove (13) opened on the upper surface of the base (1); and An arc-shaped baffle (32) is provided on the end face of the push block (31) facing the bearing (2); wherein The lower end face of the arc-shaped baffle (32) abuts against the upper end face of the bearing (2) to restrict the vertical movement of the bearing (2) when the insert block (33) slides upward and inserts into the interior of the bearing (2).

5. A testing mechanism for a bearing outer ring testing device as described in any one of claims 1-4, characterized in that, include: The detection shell (40) is disposed on the upper end face of the base (1), and the interior of the detection shell (40) is hollow to form a sliding cavity (41). The detection block (42) is slidably disposed inside the sliding cavity (41), and an abutment (43) is provided on the end face of the detection block (42) facing the bearing (2); wherein The outer wall of the contacting member (43) abuts against the outer wall of the bearing (2).

6. The testing mechanism for the bearing outer ring testing device as described in claim 5, characterized in that, The upper end face of the detection block (42) is provided with a groove, and a limit block (44) is slidably connected in the groove. A spring (45) is provided on the lower end face of the limiting block (44), and the spring (45) is connected to the detection block (42); The upper end face of the detection shell (40) is provided with a limiting port (400); wherein When the limiting block (44) slides in the sliding cavity (41) to the limiting port (400) along with the detection block (42), the spring (45) rebounds to push the limiting block (44) into the limiting port (400).

7. The testing mechanism for the bearing outer ring testing device as described in claim 6, characterized in that, The connecting port (46) is located inside the base (1); The two ends of the connecting port (46) are respectively connected to the sliding cavity (41) and the airway (11); and The lower end face of the detection block (42) blocks the connection between the connecting port (46) and the sliding cavity (41).

8. A method for operating the bearing outer ring testing device as described in claim 4, characterized in that, The working method includes: By connecting the negative pressure connector (10) to the air extraction device, an adsorption force is generated at the air passage (11) and each adsorption port (12); By activating the cylinder (30), its output end drives the push block (31) to push the bearing (2) toward each adsorption port (12) until the bearing (2) completely covers each adsorption port (12) so that it is adsorbed by each adsorption port (12) and its movement is restricted. By covering the adsorption port (12) with the bearing (2), a negative pressure is generated in the negative pressure chamber (35) to adsorb the negative pressure plate (34) to slide upward, thereby allowing the plug block (33) to be inserted into the inside of the bearing (2); By starting the rotary motor (36), the plug block (33) is driven to rotate, which in turn drives the bearing (2) to rotate so that it continuously slides into contact with the outer wall of the contacting part (43); When the roundness of the bearing (2) does not meet the production standard, the bearing (2) will push the contact part (43) and the detection block (42) to move when it rotates. The detection block (42) moves and opens the communication port (46), so that the air passage (11) is connected to the outside. That is, the negative pressure at each adsorption port (12) is lost, and the bearing (2) will naturally detach.

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