Bearing press

Abstract

The application discloses a bearing press, relates to the technical field of press mounting, and comprises a press body, a press mounting module and an anti-rotation module which are fixedly connected to the press body. The press body comprises a driving unit, a bed body and a workbench which longitudinally extend along a first direction. At least one work station is arranged on the workbench, and at least one clamp for accommodating a bearing assembly is arranged on the at least one work station. The workbench can move relative to the bed body along the first direction under the drive of the driving unit, so that the work station is switched between a standby position and a press mounting position. The press mounting module comprises a first driving assembly and a lower press head. Under the drive of the first driving assembly, the lower press head can perform a press mounting operation on the bearing assembly located on the press mounting position. The anti-rotation module comprises at least one anti-rotation mechanism. The anti-rotation mechanism comprises a second driving assembly and an anti-rotation part. Under the drive of the second driving assembly, the anti-rotation part can abut against a shaft of the bearing assembly located on the standby position, so as to prevent the bearing assembly from rotating relative to the clamp. The application can improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of press-fitting technology, and in particular to a bearing press. Background Technology

[0002] As a core component of pump products, the bearing assembly's main function is to support the pump rotor, ensuring it maintains precise radial and axial position during high-speed rotation and withstanding radial forces, axial forces, and vibration impacts generated during operation. If the bearing wears or fails, it can easily lead to rotor eccentricity or increased vibration, resulting in increased mechanical friction and potentially causing a chain reaction of failures such as shaft breakage, seal damage (leading to media leakage), and impeller-casing friction (generating metal fragments). Bearings are a critical and easily worn part of pump products, and their lifespan directly affects the equipment's overhaul cycle. Therefore, a stable and reliable bearing assembly is crucial for extending the overall lifespan of the pump.

[0003] Currently, the pump industry commonly uses a heat-fitting process for bearing assembly. This process utilizes the principle of thermal expansion, heating the inner ring of the bearing to enlarge its bore, making it easier to fit into the journal. After cooling, the inner ring shrinks to achieve an interference fit. However, this process requires extremely precise temperature control. Overheating can cause bearing annealing, reducing its hardness; uneven heating can easily lead to bearing deformation; furthermore, the heating and cooling processes are time-consuming, failing to meet the needs of rapid installation and severely restricting production efficiency and output.

[0004] As the most standardized component in pump products, bearing assemblies are best mass-produced using bearing presses during assembly. This approach ensures quality while improving production efficiency and reducing manual labor intensity.

[0005] Existing bearing presses typically employ a disc-shaped worktable with multiple stations of varying sizes to accommodate different shafts and bearing specifications. During operation, the worktable is manually rotated to select the appropriate station, and after pressing, anti-rotation fixtures are used to restrict shaft rotation, facilitating assembly and tightening of the bearing nut. However, this equipment suffers from the following drawbacks: firstly, it requires significant manual intervention, resulting in low automation and low production efficiency; secondly, the slideways of the disc-shaped worktable are prone to wear, leading to a high failure rate and difficult maintenance, with a single point of failure potentially forcing the entire production line to shut down. Utility Model Content

[0006] The purpose of this invention is to provide a bearing press that at least solves one of the aforementioned problems of existing bearing presses.

[0007] The above-mentioned objectives of this utility model can be achieved by the following technical solutions:

[0008] This utility model provides a bearing press, including a press body and a pressing module and an anti-rotation module fixedly connected to the press body. The press body includes a drive unit, a bed extending longitudinally along a first direction, and a worktable. The worktable has at least one station, and a fixture for accommodating a bearing assembly is installed on at least one station. The worktable can move relative to the bed along the first direction under the drive of the drive unit, so that the station can switch between a standby position and a pressing position. The bearing assembly includes a shaft and at least one bearing mounted on the shaft. The pressing module includes a first drive assembly and a lower press head. Under the drive of the first drive assembly, the lower press head can perform pressing operations on the bearing assembly located at the pressing position. The anti-rotation module includes at least one anti-rotation mechanism, which includes a second drive assembly and an anti-rotation part. Under the drive of the second drive assembly, the anti-rotation part can abut against the shaft of the bearing assembly located at the standby position to prevent the bearing assembly from rotating relative to the fixture.

[0009] Preferably, the bearing press further includes: a control module having a detection unit, a storage unit, and a communication unit for communicating with the detection unit and the storage unit; the detection information of the detection unit includes: the installation information and model information of the bearing assembly; the storage information of the storage unit includes: the correspondence between the model information of the bearing assembly and the driving pressure of the first drive assembly; the communication unit is electrically connected to the drive unit, the first drive assembly, and the second drive assembly.

[0010] Preferably, the workbench is provided with a plurality of workstations, which are spaced apart along the longitudinal extension direction of the workbench, and each workstation is equipped with a fixture of different specifications.

[0011] Preferably, the anti-rotation module includes multiple anti-rotation mechanisms, which are arranged along the longitudinal extension direction of the worktable and correspond to multiple sets of fixtures located in the standby position.

[0012] Preferably, the anti-rotation module further includes a mounting plate, which is fixedly connected to one side of the bed. The second drive assembly is mounted on the mounting plate. The anti-rotation part is an anti-rotation pin that is slidably disposed in the fixture. The anti-rotation pin is perpendicular to the shaft installed in the fixture. An elastic element is sleeved on the anti-rotation pin. The elastic element is used to provide elastic force to the anti-rotation pin so that the anti-rotation pin can be reset from the position abutting the shaft when the second drive assembly has no drive output.

[0013] Preferably, the anti-rotation mechanism includes two second drive assemblies, which are spaced apart along the axial direction of the clamp. The clamp has two mounting holes corresponding to the two second drive assemblies, and at least one of the mounting holes is fitted with the anti-rotation pin.

[0014] Preferably, the bed has a U-shaped groove structure, the drive unit is installed in the U-shaped groove structure, the drive unit is connected to the worktable, two slide rails are installed on the two flanges of the U-shaped groove structure, and the worktable is provided with slide rail grooves that cooperate with the two slide rails.

[0015] Preferably, the drive unit includes a stepper motor installed in the U-shaped groove structure and a coupling and a ball screw that are sequentially connected to the stepper motor. The free end of the ball screw is fixedly connected to the U-shaped groove structure through a connecting bearing seat, and the ball screw is connected to the worktable through a screw nut.

[0016] Preferably, the press body further includes a flexible dust cover, which is installed on the two slide rails and the two ends of the flexible dust cover are respectively connected to the ends of the slide rails and the ends of the worktable. When the worktable moves relative to the bed, the flexible dust cover can move in extension and retraction with the worktable.

[0017] Preferably, the fixture includes a base assembly and a pressure sleeve assembly. The base assembly is installed on the work station, the bearing assembly is housed on the base assembly, the pressure sleeve assembly is fitted on the bearing assembly, the lower pressure head has a spherical pressure surface, and the pressure sleeve assembly has a pressure bearing surface that mates with the spherical pressure surface.

[0018] The features and advantages of this utility model are as follows: The bearing press provided by this utility model sets the worktable into a long strip shape. The work position can be switched between the standby position and the pressing position by sliding the worktable relative to the bed. It has the advantages of simple positioning control, easy wear of the slide rail, high reliability and long service life. Furthermore, by integrating an anti-rotation mechanism on the bearing press, the operator can assemble the bearing locking nut on the bearing assembly after pressing without the need for other auxiliary tools. The operation is convenient and helps to improve production efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the bearing press provided in the embodiments of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the drive unit provided in the embodiment of this utility model;

[0022] Figure 3 This is a schematic diagram of the assembly of the clamp and bearing assembly provided in the embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the bed structure provided in the embodiments of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the workbench provided in the embodiment of this utility model;

[0025] Figure 6 This is a schematic diagram showing the connection between the second drive assembly and the mounting plate provided in this embodiment of the present utility model.

[0026] Explanation of icon numbers:

[0027] 1. Press body; 11. Drive unit; 111. Stepper motor; 112. Coupling; 113. Ball screw; 114. Screw nut; 12. Bed; 13. Worktable; 14. Flexible dust cover;

[0028] 2. Press-fit module; 21. First drive assembly; 22. Lower press head;

[0029] 3. Anti-rotation module; 31. Second drive assembly; 32. Mounting plate;

[0030] 4. Bearing assembly;

[0031] 5. Fixture; 51. Base assembly; 52. Pressure sleeve assembly; 53. Anti-rotation pin; 531. Limiting part; 54. Elastic element; 55. Pressure sleeve; 56. Limiting sleeve;

[0032] 6. Control module. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] like Figures 1 to 6As shown, this utility model provides a bearing press, including a press body 1 and a pressing module 2 and an anti-rotation module 3 fixedly connected to the press body 1. The press body 1 includes a drive unit 11, a bed 12 extending longitudinally along a first direction, and a worktable 13. The worktable 13 has at least one station, and a fixture 5 for accommodating a bearing assembly 4 is installed at the at least one station. The bearing assembly 4 includes a shaft and at least one bearing mounted on the shaft. The worktable 13 can move relative to the bed 12 along the first direction under the drive of the drive unit 11, allowing the station to switch between a standby position and a pressing position. The pressing module 2 includes a first drive assembly 21 and a lower pressing head 22. Under the drive of the first drive assembly 21, the lower pressing head 22 can perform pressing operations on the bearing assembly 4 located at the pressing position, so that the bearing is securely fitted onto the target position of the shaft. Thus, by setting the worktable 13 into an elongated shape, the workstation can be switched between the standby position and the pressing position by sliding the worktable 13 relative to the bed 12. This has the advantages of simple positioning control, easy wear of the slide rail, high reliability, and long service life. Among them, the first drive assembly 21 is preferably a hydraulic cylinder to ensure the stability of pressing.

[0035] The anti-rotation module 3 includes at least one anti-rotation mechanism, which comprises a second drive assembly 31 and an anti-rotation section. Driven by the second drive assembly 31, the anti-rotation section abuts against the shaft of the bearing assembly 4 located in the standby position to prevent the bearing assembly 4 from rotating relative to the clamp 5. By integrating the anti-rotation mechanism onto the bearing press, operators can assemble the bearing locking nut onto the press-fitted bearing assembly 4 without the need for other auxiliary tools, making operation convenient and improving production efficiency.

[0036] According to one embodiment of the present invention, such as Figure 4 As shown, the bed 12 has a U-shaped groove structure, and the drive unit 11 is installed inside the U-shaped groove structure. The drive unit 11 is connected to the worktable 13. Two slide rails are installed on the two flanges of the U-shaped groove structure, such as... Figure 5As shown, the worktable 13 is provided with slide rail grooves that mate with two slide rails. For example, the bed 12 adopts a box-type structure with a U-shaped groove, welded together, and reinforced with ribs and thick-walled designs in key pressure-bearing areas such as press-fitting positions to enhance overall rigidity and ensure the bed 12's resistance to deformation under high-pressure conditions. Two high-precision linear slide rails are installed on the two flanges of the U-shaped groove structure. Post-leveling ensures that the flatness error of the two slide rails is no greater than 0.1mm, guaranteeing the smooth movement of the worktable 13 relative to the bed 12. Slide rail grooves that mate with the two slide rails are installed at the bottom of the worktable 13. The surface of the slide rail grooves undergoes high-frequency quenching and hardening treatment to improve wear resistance and durability. A circular countersunk hole is formed on the upper surface of the worktable 13 to accommodate the quick installation of the tooling fixture 5, and the table surface is nitrided to improve wear resistance. As a preferred embodiment, a centralized lubrication system is provided on both sides of the workbench 13, and a progressive distributor is used to supply lubricating oil in a timed and quantitative manner to ensure that an oil film is always maintained between the friction pair formed by the slide rail and the slide rail groove, thereby significantly reducing the coefficient of friction and ensuring the service life.

[0037] According to one embodiment of the present invention, such as Figure 2 As shown, the drive unit 11 includes a stepper motor 111 installed within a U-shaped groove structure, a coupling 112 and a ball screw 113 sequentially connected to the stepper motor 111. The free end of the ball screw 113 is fixedly connected to the U-shaped groove structure via a connecting bearing seat, and the ball screw 113 is connected to the worktable 13 via a screw nut 114. Thus, motion and power are transmitted by utilizing the rolling of balls between the screw and the screw nut. The rolling friction coefficient is extremely low, typically between 0.002 and 0.005, far lower than the friction coefficient of sliding screw drives. Its transmission efficiency can reach 90% to 98%. Under the condition of transmitting the same power, the driving torque required by the ball screw 113 transmission is smaller, which can effectively reduce energy consumption and improve the energy utilization efficiency of the bearing press. Furthermore, the ball screw 113 transmission system can achieve precise linear motion positioning, and its pitch error can be controlled within a very small range. For example, the cumulative pitch error of the high-precision ball screw 113 can be controlled within ±0.01mm per 300mm. Simultaneously, the clearance between the balls, screw, and nut can be precisely adjusted through pre-tightening, even achieving backlash-free transmission, thereby improving the positioning accuracy and repeatability of the ball screw transmission system. In addition, the stepper motor 111 features high precision, high efficiency, zero feedback, and low cost. Through micro-stepping motion, it can achieve high-resolution positioning, meeting the requirements for high-precision position control. Even in the event of a loss of pulse or power, the stepper motor 111 can maintain its current position, ensuring stable system operation and accurate positioning of the worktable 13, thus guaranteeing the overall accuracy of the bearing press. As a feasible implementation, a connecting assembly is fixedly connected to the screw nut 114, and the worktable 13 is fixedly connected to the connecting assembly.

[0038] According to one embodiment of the present invention, such as Figure 1 As shown, the press body 1 also includes a flexible dust cover 14, which covers two slide rails. The two ends of the flexible dust cover 14 are connected to the ends of the slide rails and the ends of the worktable 13, respectively. When the worktable 13 moves relative to the bed 12, the flexible dust cover 14 can extend and retract with the worktable 13. By providing the flexible dust cover 14 that follows the worktable 13, the drive unit 11 and the mating surfaces of the worktable 13 and the slide rails are protected, preventing contaminants from entering and affecting the performance and service life of the bearing press. As a preferred embodiment, the flexible dust cover 14 is a flexible bellows-type machine tool guide rail protective cover. Specifically, to provide comprehensive dust protection for the slide rails and drive unit 11, both ends of the worktable 13 are connected to the flexible dust cover 14.

[0039] According to one embodiment of the present invention, such as Figure 1 and Figure 3 As shown, the fixture 5 includes a base assembly 51 and a pressure sleeve assembly 52. ​​The base assembly 51 is mounted on the workstation and houses a bearing assembly 4. The pressure sleeve assembly 52 is fitted onto the bearing assembly 4. The lower pressure head 22 has a spherical pressure surface, and the pressure sleeve assembly 52 has a bearing surface that mates with the spherical pressure surface. By designing the pressure surface of the lower pressure head 22 as spherical, the geometric characteristics of the sphere, which allows for a certain range of angular deviation, are fully utilized. Through self-alignment, the direction of pressure transmission during pressing is always aligned with the normal to the sphere, avoiding additional bending moments or shear forces caused by axial offset, thereby extending the service life of the pressing assembly and ensuring pressing quality. As a preferred embodiment, the bearing surface uses an internal hexagonal groove to reduce peak contact stress and decrease the risk of localized wear and fatigue cracks.

[0040] According to one embodiment of the present invention, such as Figure 1 As shown, the workbench 13 has multiple stations, which are spaced apart along the longitudinal direction of the workbench 13. Each station is equipped with a fixture 5 of different specifications. Thus, the bearing press can be used for pressing various types of bearing assemblies 4, exhibiting strong versatility. In this embodiment, the workbench 13 has five stations, each equipped with a fixture 5 suitable for bearings of types A1 to A5. As a preferred embodiment, this application may additionally configure four fixtures 5 suitable for bearings of types SNS1 to SNS4 to further enhance the versatility of the bearing press.

[0041] According to one embodiment of the present invention, such as Figure 1As shown, the bearing press also includes a control module 6, which has a detection unit, a storage unit, and a communication unit that communicates with the detection unit and the storage unit. The detection information of the detection unit includes: installation information and model information of the bearing assembly 4; the storage information of the storage unit includes: the correspondence between the model information of the bearing assembly 4 and the driving pressure of the first drive assembly 21; the communication unit is electrically connected to the drive unit 11, the first drive assembly 21, and the second drive assembly 31. Preferably, the storage information of the storage unit also includes: the distance between the standby position and the pressing position of each station, or the distance between the standby position and the pressing position of the station located at the end of the worktable 13, and the interval distance between two adjacent stations. In this way, the communication unit uses the detection information fed back by the detection unit to call up the relevant stored information and converts it into control commands to send to the corresponding execution drive components (drive unit 11, first drive assembly 21, second drive assembly 31), thereby realizing the automated control of the bearing press and improving production efficiency. Among them, the installation information includes at least the station information of the bearing assembly 4.

[0042] For example, when only one workstation has a bearing assembly 4 installed, the control process of the control module 6 is as follows: the detection unit detects the installation information and model information of the bearing assembly 4 at each workstation and feeds it back to the communication unit. The communication unit controls the drive unit 11 to move based on the installation information of the bearing assembly 4, so that the workstation with the bearing assembly 4 installed moves from the standby position to the pressing position. After the workstation with the bearing assembly 4 installed moves to the pressing position, the communication unit calls the storage unit to store the driving pressure of the first drive assembly 21 corresponding to the model information based on the model information of the bearing assembly 4. The communication unit configures the driving pressure of the first drive assembly 21 and controls its operation, so that the lower pressure head 22 performs a pressing operation on the bearing assembly 4 that has reached the pressing position at a preset pressing pressure. After the bearing assembly 4 is pressed, the communication unit controls the drive unit 11 to return the workstation with the bearing assembly 4 installed from the pressing position to the standby position. After the workstation with the bearing assembly 4 installed returns to the standby position, the communication unit controls the second drive assembly 31 to actuate, so that the anti-rotation part abuts against the shaft of the bearing assembly 4, so that the operator can remove the pressure sleeve assembly 52 and install the bearing locking nut.

[0043] When multiple fixtures 5 are equipped with corresponding bearing assemblies 4, the communication unit alternately controls the drive unit 11 and the first drive assembly 21 to move the worktable 13 to each station in sequence to reach the pressing position. The lower pressing head 22 then applies the corresponding preset pressing pressure to each bearing assembly 4 that has reached the pressing position to perform the pressing operation. After all bearing assemblies 4 have been pressed, the communication unit controls the drive unit 11 to move the worktable 13 to each station and return it to the corresponding standby position. In this way, batch and automated bearing pressing of multiple types of bearing assemblies 4 is achieved.

[0044] According to one embodiment of the present invention, such as Figure 1 As shown, the anti-rotation module 3 includes multiple anti-rotation mechanisms. Along the longitudinal extension of the worktable 13, these mechanisms correspond to multiple sets of fixtures 5 positioned in standby positions. Each anti-rotation mechanism includes at least one anti-rotation mechanism. Thus, each anti-rotation mechanism can simultaneously limit the rotation of each bearing assembly 4 in its corresponding standby position after press-fitting, simplifying the motion control of the worktable 13 and the anti-rotation module 3 after the bearing assembly 4 has been press-fitted, and further improving production efficiency.

[0045] According to one embodiment of the present invention, such as Figure 1 , Figure 3 and Figure 6 As shown, the anti-rotation module 3 also includes a mounting plate 32, which is fixedly connected to one side of the bed 12. A second drive assembly 31 is mounted on the mounting plate 32. The anti-rotation part is an anti-rotation pin 53 slidably disposed within the clamp 5, and the anti-rotation pin 53 is perpendicularly disposed to the bearing assembly 4 mounted within the clamp 5. An elastic element 54 is sleeved on the anti-rotation pin 53, which provides elastic force to the anti-rotation pin 53 so that the anti-rotation pin 53 can return to its original position from the position abutting the bearing assembly 4 when the second drive assembly 31 has no drive output. The elastic element 54 is preferably a spring, and the second drive assembly 31 is preferably a pneumatic-hydraulic booster cylinder to balance rapid response and reliable contact. As a preferred embodiment, such as... Figure 3 As shown, the anti-rotation pin 53 extends radially outward from the axis of the clamp 5 to form a limiting portion 531. Along the radial outward direction of the clamp 5, a pressure sleeve 55, fixedly connected to the clamp 5, is fitted onto the pin segment of the anti-rotation pin 53 outside the limiting portion 531. The pressure sleeve 55 cooperates with the limiting portion 531 to prevent the anti-rotation pin 53 from dislodging from the clamp 5. An elastic member 54 is fitted onto the anti-rotation pin 53 between the anti-disengagement boss and the outer wall of the clamp 5 to ensure that the anti-rotation pin 53 can be reset under the action of elastic force, avoiding affecting the removal and installation of the bearing assembly 4. Furthermore, along the radial outward direction of the clamp 5, a limiting sleeve 56 is fitted onto the pin segment of the anti-rotation pin 53 inside the limiting portion 531 to prevent the anti-rotation pin 53 from excessively abutting against the bearing assembly 4. In this embodiment, to extend the service life of the anti-rotation mechanism and ensure effective anti-rotation contact, the second drive assembly 31 has a spherical pressure surface, and the anti-rotation pin 53 is provided with an internal hexagonal groove surface that mates with the spherical pressure surface. Under the control of the control module 6, the second drive assembly 31 operates, causing its spherical pressure surface to abut against the internal hexagonal groove surface and applying force to it, causing the anti-rotation pin 53 to abut against the shaft, thereby preventing the bearing assembly 4 from rotating.

[0046] According to one embodiment of the present invention, such as Figure 1 and Figure 6As shown, the anti-rotation mechanism includes two second drive assemblies 31, which are spaced apart along the axis of the clamp 5. The clamp 5 has two mounting holes corresponding to the two second drive assemblies 31, and at least one of the mounting holes is fitted with an anti-rotation pin 53. This accommodates anti-rotation pins 53 mounted at different heights on each clamp 5. In a preferred embodiment, both mounting holes are fitted with anti-rotation pins 53 to provide multiple points of contact with the shaft in the standby position, improving the anti-rotation effect.

[0047] In this embodiment, to simplify the structure and save costs, only one mounting hole on the fixture 5 contains the anti-rotation pin 53. After all bearing assemblies 4 are press-fitted and the worktable 13 moves to its respective workstation and returns to its corresponding standby position, the communication unit first controls the driving mode of all pneumatic-hydraulic booster cylinders to pneumatic drive, causing all pneumatic-hydraulic booster cylinders to extend quickly. Then, it controls the driving mode of the pneumatic-hydraulic booster cylinders that encounter resistance after extension to switch to hydraulic drive to ensure their pressure stability, thereby maintaining the effectiveness of the anti-rotation pin 53 abutting the shaft.

[0048] Based on the above description, the bearing press provided by this utility model embodiment has the following beneficial effects:

[0049] The bearing press provided in this embodiment of the utility model has a long strip-shaped worktable 13. The workstation can be switched between the standby position and the pressing position by sliding the worktable 13 relative to the bed 12. It has the advantages of simple positioning control, easy wear of the slide rail, high reliability and long service life. By integrating an anti-rotation mechanism on the bearing press, the operator can assemble the bearing locking nut on the bearing assembly 4 after pressing without the need for other auxiliary tools. The operation is convenient and helps to improve production efficiency. By setting a control module 6 with a detection unit, a storage unit and a communication unit that communicates with the detection unit and the storage unit, the bearing press can be automatically controlled, which improves production efficiency. The design of multiple workstations, multiple sets of fixtures 5 and multiple anti-rotation mechanisms can realize the batch and automated pressing of bearing assemblies 4 of multiple models.

[0050] The above descriptions are merely a few embodiments of this utility model. Those skilled in the art can make various modifications or variations to the embodiments of this utility model based on the content disclosed in the application documents without departing from the spirit and scope of this utility model.

Claims

1. A bearing press, characterized in that, Includes a press body and a pressing module and an anti-rotation module fixedly connected to the press body; The press body includes a drive unit and a bed and a worktable extending longitudinally along a first direction. The worktable is provided with at least one station, and a fixture for accommodating a bearing assembly is installed on at least one station. The worktable can move relative to the bed along the first direction under the drive of the drive unit, so that the station can switch between a standby position and a pressing position. The bearing assembly includes a shaft and at least one bearing mounted on the shaft. The press-fit module includes a first drive assembly and a lower press head. Driven by the first drive assembly, the lower press head can perform press-fit operations on the bearing assembly located at the press-fit position. The anti-rotation module includes at least one anti-rotation mechanism, which includes a second drive assembly and an anti-rotation part. Under the drive of the second drive assembly, the anti-rotation part can abut against the shaft of the bearing assembly located in the standby position to prevent the bearing assembly from rotating relative to the clamp.

2. The bearing press according to claim 1, characterized in that, The bearing press also includes: The control module includes a detection unit, a storage unit, and a communication unit that communicates with the detection unit and the storage unit. The detection information of the detection unit includes: the installation information and model information of the bearing assembly; The storage information of the storage unit includes: the correspondence between the model information of the bearing assembly and the driving pressure of the first drive assembly; The communication unit is electrically connected to the drive unit, the first drive assembly, and the second drive assembly.

3. The bearing press according to claim 1 or 2, characterized in that, The workbench is provided with multiple workstations, which are spaced apart along the longitudinal extension of the workbench. Each workstation is equipped with a fixture of different specifications.

4. The bearing press according to claim 3, characterized in that, The anti-rotation module includes multiple anti-rotation mechanisms, which are arranged along the longitudinal extension direction of the worktable and correspond to multiple sets of fixtures located in the standby position.

5. The bearing press according to claim 4, characterized in that, The anti-rotation module also includes a mounting plate, which is fixedly connected to one side of the bed. The second drive assembly is mounted on the mounting plate. The anti-rotation part is an anti-rotation pin that is slidably disposed in the fixture. The anti-rotation pin is perpendicular to the shaft installed in the fixture. An elastic element is sleeved on the anti-rotation pin. The elastic element is used to provide elastic force to the anti-rotation pin so that the anti-rotation pin can be reset from the position abutting the shaft when the second drive assembly has no drive output.

6. The bearing press according to claim 5, characterized in that, The anti-rotation mechanism includes two second drive assemblies, which are spaced apart along the axial direction of the clamp. The clamp has two mounting holes corresponding to the two second drive assemblies, and at least one of the mounting holes is fitted with the anti-rotation pin.

7. The bearing press according to claim 1, characterized in that, The bed has a U-shaped groove structure, the drive unit is installed in the U-shaped groove structure, the drive unit is connected to the worktable, two slide rails are installed on the two flanges of the U-shaped groove structure, and the worktable is provided with slide rail grooves that cooperate with the two slide rails.

8. The bearing press according to claim 7, characterized in that, The drive unit includes a stepper motor installed in the U-shaped groove structure and a coupling and a ball screw that are sequentially connected to the stepper motor. The free end of the ball screw is fixedly connected to the U-shaped groove structure through a connecting bearing seat, and the ball screw is connected to the worktable through a screw nut.

9. The bearing press according to claim 8, characterized in that, The press body also includes a flexible dust cover, which is installed on the two slide rails. The two ends of the flexible dust cover are respectively connected to the ends of the slide rails and the ends of the worktable. When the worktable moves relative to the bed, the flexible dust cover can move in extension and retraction with the worktable.

10. The bearing press according to claim 1, characterized in that, The fixture includes a base assembly and a pressure sleeve assembly. The base assembly is installed on the work station and houses the bearing assembly. The pressure sleeve assembly is fitted onto the bearing assembly. The lower pressure head has a spherical pressure surface, and the pressure sleeve assembly has a bearing surface that mates with the spherical pressure surface.

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