A rotational accuracy measuring device for bearing manufacturing.

Abstract

This invention provides a rotational accuracy measuring device for bearing manufacturing, belonging to the technical field of bearing rotational accuracy measurement. It includes a device body, with a first driving device on the left side of the device body. The first driving device can drive a measuring stage to move. The measuring stage has a built-in power source for rotation. The bearing to be tested is placed on the measuring stage. A second driving device is located at the top of the device body. This invention, through measuring components one and two, can specifically measure the rotational accuracy of different bearing surfaces and the rotational accuracy under lateral pressure, covering the core testing requirements of bearing rotational accuracy and improving the comprehensiveness of the measurement. The fluorescent magnetic particle flaw detection structure can detect internal or surface defects in the bearing, supplementing the quality inspection dimension beyond accuracy measurement. The magnetic suspension recovery component realizes magnetic suspension concentration compensation and recycling, reducing resource waste, lowering testing costs, and conforming to the concept of green production.

Description

Technical Field

[0001] This invention relates to the field of bearing rotational accuracy measurement technology, and in particular to a rotational accuracy measuring device for bearing manufacturing. Background Technology

[0002] In the bearing manufacturing field, rotational accuracy is the core indicator that determines the performance and service life of bearings, and directly affects the operational stability, transmission efficiency and noise control of mechanical equipment. As high-end equipment continues to increase its requirements for bearing accuracy, traditional bearing rotational accuracy measuring devices have gradually exposed many technical defects and can no longer meet the high-precision and high-efficiency testing needs in industrial mass production.

[0003] Traditional measuring devices often focus on single-surface accuracy inspection of bearings under no-load conditions. Each inspection requires multiple adjustments to the sensor position, which is cumbersome and prone to measurement errors due to positioning deviations, resulting in low inspection efficiency. More importantly, bearings are often under lateral pressure during actual operation, and traditional devices cannot simulate this condition. Relying solely on accuracy data under no-pressure conditions makes it difficult to accurately assess the performance stability of bearings in actual service. Hidden defects such as internal cracks, surface inclusions, and subcutaneous porosity in bearings, although not directly reflected in the initial rotational accuracy data, will rapidly expand during long-term stressed operation, eventually leading to a sharp drop in accuracy, abnormal noise, or even breakage. When using fluorescent magnetic particle testing, the magnetic suspension is often recycled to avoid waste. However, some magnetic powder is adsorbed onto the bearing during recycling, resulting in a lower concentration of the recycled magnetic suspension. Direct recycling can easily lead to a decrease in testing sensitivity, making it impossible to accurately identify minute defects.

[0004] Therefore, this application provides a rotational accuracy measuring device for bearing manufacturing to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a rotational accuracy measuring device for bearing manufacturing, so as to solve the problems that the rotational accuracy measuring device used in bearing manufacturing has a single measurement dimension, cannot cover the actual working conditions, has a disconnect between defect detection and accuracy measurement, has blind spots in quality control, and has an impact on flaw detection accuracy due to improper magnetic suspension recovery concentration.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A rotational accuracy measuring device for bearing manufacturing includes a device body. A first driving device is located on the left side of the device body, capable of driving a measuring stage to move. The measuring stage has a built-in power source for rotation. A bearing to be tested is placed on the measuring stage. A second driving device is located at the top of the device body. Measurement component one and measurement component two are located at the bottom of the second driving device. A fluorescent magnetic particle inspection structure is provided on the device body. Measurement component one is located on the bottom left side of the second driving device and is used to measure the accuracy of different surfaces of the bearing under test when rotating. Measurement component two is located on the bottom right side of the second driving device and is used to measure the rotational accuracy of different surfaces of the bearing under test when its side is subjected to pressure. A magnetic suspension recovery component is located at the bottom of the fluorescent magnetic particle inspection structure, used to first compensate the concentration of the recovered magnetic suspension before recycling it.

[0008] Optionally, the measuring component one includes a motor one and a vibration sensor. A gear one is sleeved on the drive shaft at the drive end of the motor one. A rotating shaft is rotatably connected in the housing of the measuring component one. A gear two is sleeved on the rotating shaft. The gear one and gear two are meshed together. A rotating roller is fixedly installed on the rotating shaft. The rotating roller abuts against the surface of the bearing to be measured.

[0009] Optionally, a connecting rod is fixedly connected to the bottom of the second drive device, and a runout sensor is installed at the end of the connecting rod. Multiple sets of connecting rods and runout sensors are provided at the bottom of the second drive device. The runout sensor is used to measure the accuracy of the rotation of the upper surface and the inner and outer surfaces of the bearing under test.

[0010] Optionally, the second measuring component includes a second motor, which drives a connecting plate to move via a ball screw. A pressure plate is provided on the connecting plate, and multiple elastic rods are installed on the pressure plate. A pressure sensor is installed between the connecting plate and the pressure plate.

[0011] Optionally, the magnetic suspension recovery assembly includes a separation chamber and a recovery chamber. A spiral centrifuge is arranged in the middle of the separation chamber, and a partition is arranged on both sides of the spiral centrifuge. A moving component is arranged on one side of the partition. The bottom of the separation chamber is connected to a compensation device, and the bottom of the compensation device is connected to the left side area of ​​the recovery chamber.

[0012] Optionally, the spiral centrifuge is driven by a third motor, the spiral centrifuge has a liquid inlet on the right side, a separation channel inside the spiral centrifuge, an impurity outlet on the left side, and a base liquid outlet at the bottom right side of the spiral centrifuge.

[0013] Optionally, the moving component includes a moving block with a built-in power source. An electric telescopic rod is fixedly connected to the bottom of the moving block, and a magnet is installed at the bottom of the electric telescopic rod, which is connected to an external power source.

[0014] Optionally, the bottom wall of the separation chamber is provided with an impurity collection tank and a magnetic powder collection tank. The bottom of the magnetic powder collection tank is connected to the compensation device, and the moving block moves back and forth above the impurity collection tank and the magnetic powder collection tank.

[0015] Optionally, a sliding plate is slidably connected inside the compensation device, an electric telescopic rod II is installed at the bottom of the compensation device, an mounting plate is fixedly connected to the top of the electric telescopic rod II, the mounting plate is fixedly connected to the sliding plate, a pressure sensor II is installed between the mounting plate and the sliding plate, and a compensation pipe is opened inside the compensation device. When the pressure sensor II reaches a preset value, the electric telescopic rod II will retract, and the sliding plate will move below the compensation pipe.

[0016] Optionally, a second partition is provided in the recovery chamber, and a solenoid valve is installed in the channel of the second partition. A liquid level sensor is installed at the top of the recovery area on the left side of the second partition. The bottom area of ​​the recovery area on the left side of the second partition is preset to determine the volume of the magnetic suspension base liquid. When the liquid level sensor reaches the preset value, the solenoid valve closes. At this time, the mass of the magnetic suspension base liquid in the recovery area on the right side of the second partition is a fixed value.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above scheme, a measurement component is set up. The measurement component drives the roller to rotate the bearing through a motor. With the help of multiple sets of runout sensors, the rotation accuracy of the upper surface and the inner and outer surfaces of the bearing can be detected at the same time. This avoids the tedious operation of measuring a single part at a time, reduces the error caused by multiple measurements, and improves data reliability and measurement efficiency.

[0019] By setting up a second measuring component, which uses a motor and ball screw to control the pressure plate to apply pressure to the side of the bearing, and the pressure sensor one to provide real-time feedback of the pressure value, the bearing can be accurately simulated in actual operation. The component can detect the rotational accuracy under different pressures when the side is under pressure, providing key data for evaluating the performance stability of the bearing after being subjected to force, and filling the limitations of conventional pressureless measurement.

[0020] By incorporating a magnetic suspension recovery component, a dual separation mechanism is formed through the cooperation of a spiral centrifuge and a magnet. The centrifuge first separates the base liquid from the solids using centrifugal force, and then the magnet precisely adsorbs the magnetic powder, achieving accurate separation of the magnetic powder from impurities. The compensation device monitors the accumulation mass of the magnetic powder through a pressure sensor. When the preset value is reached, the electric telescopic rod is automatically triggered to send a quantitative amount of magnetic powder into the recovery chamber through the compensation pipeline. The recovery chamber accurately determines the volume and mass of the base liquid using a liquid level sensor and a preset bottom area, ensuring that the magnetic powder and base liquid are mixed in proportion, so that the concentration of the recovered magnetic suspension is consistent with that of the new liquid, avoiding a decrease in flaw detection accuracy due to concentration fluctuations. Attached Figure Description

[0021] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0022] Figure 1 A three-dimensional structural diagram of a rotational accuracy measuring device used in bearing manufacturing.

[0023] Figure 2 This is a three-dimensional structural diagram of measuring component one and measuring component two;

[0024] Figure 3 This is a cross-sectional view of component one.

[0025] Figure 4 A three-dimensional structural diagram of measuring component one and the bearing to be tested;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the second measuring component;

[0027] Figure 6 This is a three-dimensional structural diagram of the magnetic suspension recovery component;

[0028] Figure 7 This is a cross-sectional view of a spiral centrifuge;

[0029] Figure 8 A partial 3D structural diagram of the moving component;

[0030] Figure 9 This is a cross-sectional view of the compensation device;

[0031] Figure 10 This is a cross-sectional view of the recovery chamber.

[0032] Figure label:

[0033] 1. Device body; 2. First drive device; 3. Measuring platform; 4. Bearing to be tested; 5. Second drive device; 6. Measuring component one; 601. Motor one; 602. Gear one; 603. Rotating shaft; 604. Gear two; 605. Rotating roller; 606. Connecting rod; 607. Jump sensor; 7. Measuring component two; 701. Motor two; 702. Connecting plate; 703. Pressure sensor one; 704. Pressure plate; 705. Elastic rod; 8. Fluorescent magnetic particle flaw detection structure; 9. Magnetic suspension recovery component; 901. Separation chamber; 902. Spiral centrifuge; 9021. Motor three; 90 22. Liquid Inlet; 9023. Separation Channel; 9024. Impurity Outlet; 9025. Base Liquid Outlet; 903. Partition 1; 904. Moving Component; 9041. Moving Block; 9042. Electric Telescopic Rod 1; 9043. Magnet; 9044. Impurity Collection Tank; 9045. Magnetic Powder Collection Tank; 905. Compensation Device; 9051. Slide Plate; 9052. Electric Telescopic Rod 2; 9053. Mounting Plate; 9054. Pressure Sensor 2; 9055. Compensation Pipeline; 906. Recovery Chamber; 9061. Partition 2; 9062. Solenoid Valve; 9063. Liquid Level Sensor.

[0034] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0035] The rotational accuracy measuring device for bearing manufacturing provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0036] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0037] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0038] It is understood that the meanings of “on”, “above” and “above” in this disclosure should be interpreted in the broadest sense, such that “on” means not only “directly on” something, but also includes something with an intermediary feature or layer, and that “above” or “above” means not only “on” something, but also includes something “above” or “above” without an intermediary feature or layer.

[0039] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0040] like Figures 1 to 10As shown, an embodiment of the present invention provides a rotational accuracy measuring device for bearing manufacturing, including a device body 1. A first driving device 2 is disposed on the left side of the device body 1, which can drive a measuring table 3 to move. The measuring table 3 has a built-in power source for rotation. A bearing 4 to be tested is placed on the measuring table 3. A second driving device 5 is disposed at the top of the device body 1. A first measuring component 6 and a second measuring component 7 are disposed at the bottom of the second driving device 5. A fluorescent magnetic particle inspection structure 8 is disposed on the device body 1. The first measuring component 6 is disposed on the bottom left side of the second driving device 5 and is used to measure the accuracy of different surfaces of the bearing 4 under test when it rotates. The second measuring component 7 is disposed on the bottom right side of the second driving device 5. Measurement component 2 7 is used to measure the rotational accuracy of different surfaces of the bearing 4 under test when it is subjected to pressure. The bottom of the fluorescent magnetic particle inspection structure 8 is equipped with a magnetic suspension recovery component 9, which is used to first compensate the concentration of the recovered magnetic suspension before recycling. Through measurement component 1 6 and measurement component 2 7, the rotational accuracy of different surfaces of the bearing and the rotational accuracy when the side is subjected to pressure can be measured in a targeted manner, covering the core inspection requirements of bearing rotational accuracy and improving the comprehensiveness of the measurement. The fluorescent magnetic particle inspection structure 8 can detect internal or surface defects of the bearing, supplementing the quality inspection dimension beyond accuracy measurement. The magnetic suspension recovery component 9 realizes magnetic suspension concentration compensation and recycling, reducing resource waste, lowering inspection costs, and conforming to the concept of green production.

[0041] like Figures 2 to 4 As shown, the measuring component 6 includes a motor 601 and a vibration sensor 607. A gear 602 is mounted on the drive shaft at the drive end of the motor 601. A rotating shaft 603 is rotatably connected inside the housing of the measuring component 6. A gear 604 is mounted on the rotating shaft 603, and gears 602 and 604 are meshed together. A rotating roller 605 is fixedly mounted on the rotating shaft 603, and the rotating roller 605 abuts against the surface of the bearing 4 to be measured. A connecting rod 606 is fixedly connected to the bottom of the second driving device 5, and a vibration sensor 607 is mounted at the end of the connecting rod 606. Multiple sets of connecting rods 606 and vibration sensors 607 are provided at the bottom of the second driving device 5. 7 is used to measure the rotational accuracy of the upper surface and inner and outer surfaces of the bearing under test 4. The motor 601 in the measuring component 6 drives the rotating shaft 603 and the rotating roller 605 to rotate through gear meshing. The rotating roller 605 abuts against the surface of the bearing under test 4, which can simulate the rotational state of the bearing during actual operation, making the accuracy measurement more in line with the real use scenario and improving the accuracy of the measurement results. The bottom of the second driving device 5 is equipped with multiple sets of connecting rods 606 and runout sensors 607, which can simultaneously measure the rotational accuracy of the upper surface and inner and outer surfaces of the bearing, avoiding the tedious operation of single-part measurement, improving measurement efficiency, and multi-part synchronous measurement can reduce measurement errors and improve data reliability.

[0042] like Figure 5As shown, the measuring component 2 7 includes a motor 2 701, which drives the connecting plate 702 to move via a ball screw. A pressure plate 704 is provided on the connecting plate 702, and multiple elastic rods 705 are installed on the pressure plate 704. A pressure sensor 1 703 is installed between the connecting plate 702 and the pressure plate 704. The measuring component 2 7 drives the connecting plate 702 to move via the motor 2 701 and the ball screw, causing the pressure plate 704 to apply pressure to the side of the bearing. The pressure sensor 1 703 monitors the pressure value in real time, which can accurately control and provide feedback on the pressure on the side of the bearing, realize the measurement of the bearing rotation accuracy under constant pressure conditions, meet the accuracy detection requirements of the bearing under stress conditions, provide data support for evaluating the performance stability of the bearing after stress, and improve the practicality and pertinence of the detection.

[0043] like Figures 6 to 8 As shown, the magnetic suspension recovery assembly 9 includes a separation chamber 901 and a recovery chamber 906. A spiral centrifuge 902 is arranged in the middle of the separation chamber 901. Partitions 903 are arranged on both sides of the spiral centrifuge 902. A moving assembly 904 is arranged on the side of the partitions 903. The bottom of the separation chamber 901 is connected to a compensation device 905. The bottom of the compensation device 905 is connected to the left side of the recovery chamber 906. The spiral centrifuge 902 is driven by a motor 9021. A liquid inlet 9022 is arranged on the right side of the spiral centrifuge 902. A separation channel 9023 is arranged inside the spiral centrifuge 902. An impurity outlet 9024 is arranged on the left side of the spiral centrifuge 902. A base liquid outlet 9025 is arranged at the bottom of the right side of the spiral centrifuge 902. The moving assembly 904 includes a moving block 9041. The moving block 9041 has a built-in power source. An electric extension is fixedly connected to the bottom of the moving block 9041. The telescopic rod 9042 has a magnet 9043 installed at its bottom, which is connected to an external power source. The bottom wall of the separation chamber 901 is equipped with an impurity collection tank 9044 and a magnetic powder collection tank 9045. The bottom of the magnetic powder collection tank 9045 is connected to a compensation device 905. The moving block 9041 moves back and forth above the impurity collection tank 9044 and the magnetic powder collection tank 9045. A dual separation mechanism is formed through the cooperation of a spiral centrifuge 902 and the magnet 9043. The centrifuge first separates the base liquid from the solids using centrifugal force, and then the magnet 9043 precisely adsorbs the magnetic powder, preventing the magnetic powder from mixing with impurities. The bottom of the separation chamber 901 has independent impurity collection tanks 9044 and magnetic powder collection tanks 9045 to ensure the separate collection of different substances, reduce subsequent processing steps, achieve precise separation of magnetic powder and impurities, and ensure the quality of subsequent magnetic suspension recovery.

[0044] like Figure 9As shown, a sliding plate 9051 is slidably connected inside the compensation device 905. An electric telescopic rod 9052 is installed at the bottom of the compensation device 905, and an mounting plate 9053 is fixedly connected to the top of the electric telescopic rod 9052. The mounting plate 9053 is fixedly connected to the sliding plate 9051, and a pressure sensor 9054 is installed between the mounting plate 9053 and the sliding plate 9051. A compensation pipe 9055 is opened inside the compensation device 905. When the pressure sensor 9054 reaches a preset value, the electric telescopic rod 9052 will retract, and the sliding plate 9051 will move below the compensation pipe 9055. The compensation device 905 controls magnetic powder compensation through the electric telescopic rod 9052, the sliding plate 9051, and the pressure sensor 9054. When the pressure sensor 9054 reaches a preset value, compensation is automatically triggered, which can accurately control the amount of magnetic powder replenished, ensure that the concentration of the recovered magnetic suspension meets the usage standards, avoid affecting the flaw detection accuracy due to improper concentration, and improve the reliability of magnetic suspension recycling.

[0045] like Figure 6 and Figure 10 As shown, a second partition 9061 is provided in the recovery chamber 906. A solenoid valve 9062 is installed in the channel of the second partition 9061. A liquid level sensor 9063 is installed at the top of the recovery area on the left side of the second partition 9061. The bottom area of ​​the recovery area on the left side of the second partition 9061 is preset to determine the volume of the magnetic suspension base liquid. When the liquid level sensor 9063 reaches the preset value, the solenoid valve 9062 closes. At this time, the mass of the magnetic suspension base liquid in the recovery area on the right side of the second partition 9061 is a fixed value, and the impurity collection tank 9044 collects the separated impurities. To prevent impurities from contaminating the recovery liquid and affecting the flaw detection effect, the recovery chamber 906, through partition 9061, solenoid valve 9062, liquid level sensor 9063, and a recovery area with a preset bottom area, can accurately determine the volume and mass of the recovery magnetic suspension base liquid. When the liquid level sensor 9063 reaches the preset value, the solenoid valve 9062 closes, which can quickly lock the quantitative amount of base liquid, providing a precise basis for subsequent proportional mixing with compensating magnetic powder, further ensuring the stability of the circulating magnetic suspension concentration, while simplifying the quantitative operation of base liquid and improving the automation and accuracy of the recovery process.

[0046] The working principle of the technical solution provided by this invention is as follows:

[0047] Before testing, the measuring platform 3 is moved to the leftmost side of the device body 1 by the first drive device 2, and the bearing 4 to be tested is placed on the measuring platform 3 by the robotic arm. Then the measuring platform 3 is moved to the bottom of the second drive device 5, and the second drive device 5 is controlled to move the measuring component 6 and the measuring component 7 to the measuring area of ​​the bearing 4 to be tested, and the testing begins.

[0048] During testing, motor 601 is started, which drives the rotating roller 605 to rotate through gear meshing. Since the rotating roller 605 abuts against the bearing 4 under test, it drives the bearing 4 under test to rotate. The runout sensor 607 contacts the two upper surfaces and the inner and outer sides of the bearing 4 under test, respectively, to measure its rotational accuracy, reduce measurement errors, and improve measurement efficiency. After the measurement is completed, motor 701 is started, which applies pressure to the outer side of the bearing 4 under test by the pressure plate 704 and the elastic rod 705. The pressure can be adjusted to continue measuring the rotational accuracy of the bearing 4 under test when subjected to different pressures, thereby improving the practicality and specificity of the test.

[0049] After the rotational accuracy is checked, motor 601 and motor 701 are turned off. The second drive device 5 lifts the first measuring component 6 and the second measuring component 7, and the measuring platform 3 is rotated 180 degrees. The bearing 4 to be tested is sent into the fluorescent magnetic particle flaw detection structure 8 through the first drive device 2. The robotic arm clamps the bearing 4 to be tested off the measuring platform 3 and places it on the ultraviolet detection platform. The spraying system above sprays magnetic suspension liquid onto the surface of the bearing 4 to be tested. Then, the closed-circuit magnetic yoke magnetizes it, and then it is observed under ultraviolet light.

[0050] During the recovery of the magnetic suspension, the mixture of magnetic powder and impurities enters the separation chamber 901 through the channel on the ultraviolet detection platform, and then enters the spiral centrifuge 902 through the inlet 9022. Motor 9021 starts, driving the spiral centrifuge 902 to rotate. The mixture of magnetic powder and impurities reaches the separation area through the separation channel 9023. The magnetic powder and impurities exit from the impurity outlet 9024 on the left and fall into the impurity collection tank 9044. The base liquid exits from the base liquid outlet 9025 on the right and enters the right side area of ​​the recovery chamber 906 below. Component 904 and the electric telescopic rod 9042 drive the magnet 9043 into the impurity collection tank 9044. The magnet 9043 is energized, attracting magnetic powder to its surface. It then moves above the magnetic powder collection tank 9045. When the magnet 9043 is de-energized, the magnetic powder falls into the magnetic powder collection tank 9045 and then into the compensation device 905 below. The collected magnetic powder accumulates on the slide plate 9051. When the accumulated magnetic powder reaches the threshold of the pressure sensor 9054, the electric telescopic rod 9052 controls the slide plate 9051 to move downwards. The magnetic powder is moved below the compensation pipe 9055, and the accumulated magnetic powder enters the recovery chamber 906 through the compensation pipe 9055 to the left side of the second partition 9061. Then, the electric telescopic rod 9052 controls the slide plate 9051 to reset. The pressure sensor 9054 controls the mass of the magnetic powder compensation. After the base liquid enters the right area of ​​the recovery chamber 906, it enters the left area through the solenoid valve 9062. The level sensor 9063 monitors the level of the base liquid on the left side. When the level sensor 9063 reaches a preset value, the solenoid valve 9062 closes, and then... An external negative pressure pump sends the recovered magnetic suspension into the magnetic suspension tank for the next spray. Then, the solenoid valve 9062 reopens, and the above operation is repeated. The volume of the recovered magnetic suspension base liquid can be accurately determined by the liquid level sensor 9063 and the preset bottom area of ​​the recovery area on the right side of the partition 9061. Combined with the density of the base liquid, the mass of the recovered magnetic suspension base liquid can be determined. The mass of the recovered magnetic suspension base liquid compensated by magnetic powder can ensure that the concentration of the recovered magnetic suspension is consistent with that of the sprayed liquid, avoiding the influence of inconsistent concentrations of the recovered magnetic suspension on the measurement results.

[0051] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0052] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A rotational accuracy measuring device for bearing manufacturing, characterized in that, The device includes a main body (1), a first drive device (2) is provided on the left side of the main body (1), the first drive device (2) can drive the measuring table (3) to move, the measuring table (3) has a built-in power source that can be used for rotation, the bearing to be tested (4) is placed on the measuring table (3), a second drive device (5) is provided at the top of the main body (1), a first measuring component (6) and a second measuring component (7) are provided at the bottom of the second drive device (5), and a fluorescent magnetic particle flaw detection structure (8) is provided on the main body (1). The first measuring component (6) is located on the bottom left side of the second drive device (5). The first measuring component (6) is used to measure the accuracy of different surfaces of the bearing (4) under test when it rotates. The second measuring component (7) is located on the bottom right side of the second driving device (5). The second measuring component (7) is used to measure the rotational accuracy of different surfaces of the bearing (4) under test when it is subjected to pressure. The bottom of the fluorescent magnetic particle flaw detection structure (8) is provided with a magnetic suspension recovery component (9), which is used to first compensate the concentration of the recovered magnetic suspension before recycling it. The magnetic suspension recovery assembly (9) includes a separation chamber (901) and a recovery chamber (906). A spiral centrifuge (902) is arranged in the middle of the separation chamber (901). A partition (903) is arranged on both sides of the spiral centrifuge (902). A moving assembly (904) is arranged on the side of the partition (903). The bottom of the separation chamber (901) is connected to a compensation device (905). The bottom of the compensation device (905) is connected to the left side area of ​​the recovery chamber (906). The spiral centrifuge (902) is driven by motor three (9021). The spiral centrifuge (902) has a liquid inlet (9022) on the right side, a separation channel (9023) inside the spiral centrifuge (902), an impurity outlet (9024) on the left side, and a base liquid outlet (9025) at the bottom right side.

2. The rotational accuracy measuring device for bearing manufacturing according to claim 1, characterized in that, The measuring component 1 (6) includes a motor 1 (601) and a vibration sensor (607). A gear 1 (602) is sleeved on the drive shaft of the drive end of the motor 1 (601). A rotating shaft (603) is rotatably connected in the housing of the measuring component 1 (6). A gear 2 (604) is sleeved on the rotating shaft (603). The gear 1 (602) and the gear 2 (604) are meshed. A rotating roller (605) is fixedly installed on the rotating shaft (603). The rotating roller (605) abuts against the surface of the bearing (4) to be measured.

3. The rotational accuracy measuring device for bearing manufacturing according to claim 2, characterized in that, The bottom of the second drive device (5) is fixedly connected to a connecting rod (606), and a runout sensor (607) is installed at the end of the connecting rod (606). The bottom of the second drive device is provided with multiple sets of connecting rods (606) and runout sensors (607). The runout sensor (607) is used to measure the accuracy of the upper surface and inner and outer surfaces of the bearing (4) under test when rotating.

4. The rotational accuracy measuring device for bearing manufacturing according to claim 3, characterized in that, The second measuring component (7) includes a second motor (701), which drives a connecting plate (702) to move via a ball screw. A pressure plate (704) is provided on the connecting plate (702), and multiple elastic rods (705) are installed on the pressure plate (704). A pressure sensor (703) is installed between the connecting plate (702) and the pressure plate (704).

5. The rotational accuracy measuring device for bearing manufacturing according to claim 4, characterized in that, The moving component (904) includes a moving block (9041), which has a built-in power source. An electric telescopic rod (9042) is fixedly connected to the bottom of the moving block (9041). A magnet (9043) is installed at the bottom of the electric telescopic rod (9042), and the magnet (9043) is connected to an external power source.

6. The rotational accuracy measuring device for bearing manufacturing according to claim 5, characterized in that, The bottom wall of the separation chamber (901) is provided with an impurity collection tank (9044) and a magnetic powder collection tank (9045). The bottom of the magnetic powder collection tank (9045) is connected to the compensation device (905). The moving block (9041) moves back and forth above the impurity collection tank (9044) and the magnetic powder collection tank (9045).

7. The rotational accuracy measuring device for bearing manufacturing according to claim 6, characterized in that, The compensation device (905) has a sliding plate (9051) inside. An electric telescopic rod (9052) is installed at the bottom of the compensation device (905). An installation plate (9053) is fixedly connected to the top of the electric telescopic rod (9052). The installation plate (9053) is fixedly connected to the sliding plate (9051). A pressure sensor (9054) is installed between the installation plate (9053) and the sliding plate (9051). A compensation pipe (9055) is opened inside the compensation device (9055). When the pressure sensor (9054) reaches a preset value, the electric telescopic rod (9052) will retract, and the sliding plate (9051) will move below the compensation pipe (9055).

8. The rotational accuracy measuring device for bearing manufacturing according to claim 7, characterized in that, The recovery chamber (906) is provided with a second partition (9061). A solenoid valve (9062) is installed in the channel of the second partition (9061). A liquid level sensor (9063) is installed on the top of the recovery area on the left side of the second partition (9061). The bottom area of ​​the recovery area on the left side of the second partition (9061) is preset to determine the volume of the magnetic suspension base liquid. When the liquid level sensor (9063) reaches the preset value, the solenoid valve (9062) closes. At this time, the mass of the magnetic suspension base liquid in the recovery area on the right side of the second partition (9061) is a fixed value.

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