Press for mounting motor bearing

Abstract

The application relates to the field of presses, and discloses a press for motor bearing installation, which comprises a bearing installation frame and a press body; the press body is arranged on the rear side of the upper surface of the bearing installation frame; an auxiliary positioning mechanism is arranged on the upper surface of the bearing installation frame, and the auxiliary positioning mechanism is used for fixing and limiting a motor rotating shaft and triggering the motor rotating shaft to rotate and smear lubricating liquid before the motor rotating shaft is installed with a bearing; in the application, the auxiliary positioning mechanism is arranged; in the process that a bearing ring is pressed against the motor rotating shaft, the motor rotating shaft is fixed and limited, the absolute stability of the rotating shaft is ensured, meanwhile, a uniform pre-smearing lubricating layer can significantly reduce the friction resistance and heat generation during bearing pressing, the damage risk of a matching surface is reduced, the bearing can be smoothly and accurately pressed into a predetermined position, and therefore, high-efficiency, high-quality and low-damage bearing installation is realized.

Description

Technical Field

[0001] This invention relates to the field of presses, and more particularly to a press for mounting motor bearings. Background Technology

[0002] As an indispensable power source in modern industry and daily life, the performance, lifespan, and reliability of electric motors are of paramount importance. Among the many core components of an electric motor, bearings play a crucial role, responsible for supporting rotor rotation, reducing friction, and ensuring smooth and efficient motor operation. The quality of bearing installation directly affects the overall performance and lifespan of the motor; therefore, bearing installation is a process that requires precise control.

[0003] According to Chinese Patent Publication No. CN113146193B, a press for bearing installation is disclosed, including a press base, and further including: a lower pressure ring mounted on an upper pressure plate of the press base, a base plate mounted on the lower pressure plate, and a base slidably connected to the base plate. The press base also includes several nitrogen springs for supporting the base, and the base is equipped with positioning elements for positioning the bearing and the workpiece to be installed. This press for bearing installation, by setting positioning elements on a conventional press, uses positioning rings and balls to position the bearing, and during press operation, before the bearing contacts the workpiece to be installed, the positioning... The positioning rod on the cylinder automatically aligns the bearing with the axis of the part to be installed, thus facilitating installation. This method automatically adjusts the axis of both, reducing wear caused by assembly and improving the product qualification rate. However, this press still has shortcomings. During the installation of the motor bearing, the press uses a simple clamp to fix the motor shaft. After the motor shaft is fixed, lubricant needs to be applied manually. Manual application makes it difficult to ensure the uniformity and complete coverage of the lubricant. Since both shaft fixing and lubrication require manual intervention, the entire bearing installation process is not fully automated. This not only affects efficiency but also requires operators to have certain skills and the labor intensity is relatively high. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a press for installing motor bearings, thus solving the above problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a press for mounting motor bearings, comprising:

[0006] Bearing mounting bracket;

[0007] Press body; the press body is disposed on the rear side of the upper surface of the bearing mounting bracket;

[0008] Auxiliary positioning mechanism; the auxiliary positioning mechanism is set on the upper surface of the bearing mounting bracket. This mechanism is used to fix and limit the motor shaft before the bearing is installed, and simultaneously triggers the rotation of the motor shaft to apply lubricant. The auxiliary positioning mechanism includes a fixed bracket, a fixed plate, a stepper motor, a left threaded screw, a right threaded screw, a connecting rod, a displacement drive block, an arc-shaped retaining ring, a linkage arm, a shaft drive rack, and a lubricant cylinder. After the lower end of the motor shaft to be installed is inserted into the slot of the pressure table, the stepper motor starts, and its output end... The left and right lead screws are connected by a connecting rod. The rotation of the left lead screw drives the right lead screw to rotate synchronously via the connecting rod. As the left and right lead screws rotate, the threads cause the two opposing drive blocks to move closer together along the screw axis. As the drive blocks move closer, the arc-shaped retaining rings fixed to their upper surfaces also move closer together. When the inner working surface of the arc-shaped retaining ring contacts the outer circumference of the motor shaft, the arc-shaped retaining ring creates a radial clamping force on the motor shaft. During the tightening process, since the shaft drive rack is located on the upper front side of the arc-shaped retaining ring, it is the shaft drive rack that first contacts the motor shaft to be installed. That is, in the stage before the arc-shaped retaining ring fixes the motor shaft to be installed, the shaft drive rack drives the motor shaft to rotate through friction with the outer circumference of the motor shaft and in an alternating force manner. At the same time as the motor shaft is forced to rotate, the lubricated balls located below the shaft drive rack start to work. The balls roll as the shaft rotates, and the lubricant pre-applied to the balls or the surrounding area is evenly applied to the outer circumference of the shaft through friction and rolling, especially the mating area where the bearing will be installed. In this way, during the process of the bearing ring being pressed against the motor shaft, the absolute stability of the shaft is ensured by fixing and limiting the motor shaft. At the same time, the pre-applied uniform lubricating layer can significantly reduce the frictional resistance and heat generation when the bearing is pressed in, reduce the risk of damage to the mating surface, and ensure that the bearing can be pressed into the predetermined position smoothly and accurately, thereby achieving efficient, high-quality, and low-damage bearing installation.

[0009] Linkage protection mechanism; the linkage protection mechanism is located on the front side below the press body, and the linkage protection mechanism is used to trigger the flip protection plate to flip during the pressing and installation of the bearing ring.

[0010] Preferably, the number of fixed brackets is set to two, and the two fixed brackets are respectively set on the left and right sides of the upper surface of the bearing mounting bracket. Fixed plates are fixedly connected to the outer side of the upper surface of the two fixed brackets. Left and right threaded screws are rotatably connected to the inner side of the left and right fixed plates, respectively. Connecting rods are fixedly connected to the ends of the left and right threaded screws away from the corresponding fixed plates. The outer surfaces of the left and right threaded screws are threaded with opposing drive blocks. The two opposing drive blocks are symmetrically arranged, and connecting arms are fixedly connected to the upper surface of the two opposing drive blocks.

[0011] Preferably, the ends of the two connecting arms away from the corresponding displacement drive blocks are respectively located on the left and right sides of the upper surface of the pressure table. The lower end of the pressure table is fixedly connected to the upper surface of the bearing mounting bracket. Each of the two connecting arms is provided with a linkage arm on the outer side of one end of the pressure table. Each of the two linkage arms is provided with a rotating shaft drive rack on the inner side. Two fixing rods are fixedly connected between the rotating shaft drive rack and the linkage arm. An arc-shaped retaining ring is fixedly connected to one end of the two connecting arms on the pressure table. The rotating shaft drive rack is located on the upper front side of the arc-shaped retaining ring.

[0012] Preferably, two lubricating fluid cylinders are fixedly connected to the upper surfaces of the two drive racks of the rotating shafts. The lubricating fluid cylinders are equipped with fluid loading balls embedded in their inner sides, and each lubricating fluid cylinder is threaded with a filler plug on its upper surface.

[0013] Preferably, a limiting slide rail is fixedly connected to the upper surface of both fixed brackets, and a displacement drive block is slidably connected to the upper surface of the limiting slide rail. A stepper motor is fixedly connected to the outer side of the left fixed bracket, and the output end of the stepper motor is connected to the left threaded screw drive.

[0014] Preferably, the linkage protection mechanism includes a movable arm, a connecting slider, a connecting slide rail, a flip protection plate, a connecting frame, a flip shaft, an extension arm, and a limiting shaft. The rear end of the movable arm is rotatably connected to the front side of the bearing pressure ring, the front end of the movable arm is rotatably connected to the upper surface of the connecting slider, the lower end of the connecting slider is slidably connected to the upper surface of the connecting slide rail, and the lower end of the connecting slide rail is fixedly connected to the upper surface of the flip protection plate.

[0015] Preferably, the front end of the flip protection plate is fixedly connected to the rear side of the flip shaft, the left and right ends of the flip shaft are rotatably connected to the left and right sides inside the connecting frame, and a torsion spring is provided at the rotatable connection between the flip shaft and the connecting frame, and the connecting frame is fixedly connected to the front side of the pressure table.

[0016] Preferably, both ends of the rear side of the connecting frame are fixedly connected to an extension arm, and a limiting shaft is rotatably connected between the two extension arms, the limiting shaft passing through the middle of the movable arm laterally.

[0017] Preferably, a groove is provided in the middle of the upper surface of the pressure plate, a motor shaft to be installed is provided inside the groove, and a bearing ring is provided on the upper surface of the motor shaft to be installed.

[0018] Preferably, a hydraulic rod is provided on the lower surface of the press body, the fixed end of the hydraulic rod is fixedly connected to the press body, and a bearing pressure ring is fixedly connected to the free end of the hydraulic rod.

[0019] This invention provides a press for mounting motor bearings. Compared with the prior art, it has the following advantages:

[0020] In this invention, after the lower end of the motor shaft to be installed is inserted into the slot of the pressure table through the auxiliary positioning mechanism, the stepper motor starts and its output drives the left threaded screw to rotate. The left and right threaded screws are connected by a connecting rod. The rotation of the left threaded screw will drive the right threaded screw to rotate synchronously through the connecting rod. When the left and right threaded screws rotate, due to the action of the threads, the two opposing drive blocks will move closer to each other along the screw axis. As the opposing drive blocks move closer to each other, the arc-shaped retaining rings fixedly connected to their upper surfaces also move closer to each other. When the inner working surface of the arc-shaped retaining ring contacts the outer circumferential surface of the motor shaft, the arc-shaped retaining ring will generate a radial clamping force on the motor shaft. In this process, since the shaft drive rack is located on the upper front side of the arc-shaped retaining ring, the shaft drive rack is the first to contact the motor shaft to be installed, that is, the arc-shaped retaining ring fixes the motor shaft to be installed. In the stage before the motor shaft rotates, the shaft drive rack drives the motor shaft to rotate through friction with the outer circumference of the motor shaft and in an alternating force manner. While the motor shaft is forced to rotate, the lubricated balls located below the shaft drive rack start to work. The balls roll as the shaft rotates, and the lubricant that has been pre-applied to the balls or the surrounding area is evenly applied to the outer circumference of the shaft through friction and rolling, especially the mating area where the bearing will be installed. In this way, during the process of the bearing ring being pressed into the motor shaft, the absolute stability of the shaft is ensured by fixing and limiting the motor shaft. At the same time, the pre-applied uniform lubricating layer can significantly reduce the frictional resistance and heat generation when the bearing is pressed in, reduce the risk of damage to the mating surface, and ensure that the bearing can be pressed into the predetermined position smoothly and accurately, thereby achieving efficient, high-quality, and low-damage bearing installation.

[0021] 2. In this invention, through the linkage protection mechanism, when the operator starts the press, the hydraulic rod extends downward, driving the bearing pressure ring to move downward in preparation for pressing the bearing ring. As the bearing pressure ring moves downward, the rear end of the movable arm connected to its front side also moves downward. The downward movement of the rear end of the movable arm will drive its front end to swing downward. Since the lower end of the connecting slider is slidably connected to the upper surface of the connecting slide rail, and the connecting slide rail itself is fixed to the upper surface of the flip protection plate, the connecting slider cannot move downward and can only slide forward along the slide rail. Under the thrust of the movable arm, the flip protection plate overcomes the resistance of the torsion spring and flips backward around the flip axis. During the flipping process, the plate surface of the flip protection plate will move to the front of the bearing pressing area. This forms a physical barrier, blocking the path where operators might reach into the pressure table slot, ensuring that operators cannot put their hands in. At the most dangerous moment when the bearing ring is pressed, the flip-over protective plate automatically rises, forming a physical barrier that completely eliminates the possibility of operators putting their hands into the narrow and dangerous area between the pressure ring and the bearing ring due to distraction, habit, or misoperation. After the bearing ring is installed in place, the operator controls the hydraulic rod to rise, and the bearing pressure ring rises accordingly. The rear end of the movable arm rises with the pressure ring, driving the front end to swing upward, causing the connecting slider to slide forward along the slide rail. The forward sliding of the connecting slider pulls the flip-over protective plate to flip forward around the flip axis, returning to the initial position, preparing for the next pressing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the front three-dimensional structure of a press for mounting motor bearings proposed in this invention;

[0023] Figure 2 This is a schematic diagram of the structure of a press for mounting motor bearings proposed in this invention, viewed from an oblique angle.

[0024] Figure 3 This is a schematic diagram of the rear three-dimensional structure of a press for mounting motor bearings proposed in this invention;

[0025] Figure 4 This is a schematic diagram of the upper part of a press for mounting motor bearings according to the present invention;

[0026] Figure 5 This is a schematic diagram of the auxiliary positioning mechanism in a press for mounting motor bearings proposed in this invention;

[0027] Figure 6 This invention proposes a press for mounting motor bearings. Figure 4 Enlarged view of A in the middle;

[0028] Figure 7 This is a schematic diagram of the linkage protection mechanism in a press for mounting motor bearings proposed in this invention;

[0029] Figure 8 This is a schematic diagram of the linkage arm in a press for mounting motor bearings proposed in this invention.

[0030] Legend:

[0031] 1. Bearing mounting bracket; 2. Press body; 3. Auxiliary positioning mechanism; 301. Fixed bracket; 302. Fixed plate; 303. Stepper motor; 304. Left threaded screw; 305. Right threaded screw; 306. Connecting rod; 307. Limiting slide rail; 308. Opposing drive block; 309. Connecting arm; 310. Arc-shaped retaining ring; 311. Linkage arm; 312. Fixed rod; 313. Rotary shaft drive rack; 314. Lubricating fluid cylinder; 315. Fluid filling ball; 316. Oil filling plug; 4. Linkage protection mechanism; 401. Movable arm; 402. Connecting slider; 403. Connecting slide rail; 404. Tilting protection plate; 405. Connecting frame; 406. Tilting shaft; 407. Extending arm; 408. Limiting shaft; 5. Hydraulic rod; 6. Bearing pressure ring; 7. Motor shaft to be installed; 8. Bearing ring; 9. Pressure table. Detailed Implementation

[0032] The technical solutions of the embodiments 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, and 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.

[0033] Please see Figures 1-8 The present invention provides two technical solutions, specifically including the following embodiments:

[0034] Example 1: A press for installing motor bearings includes: a bearing mounting bracket 1, a press body 2, and an auxiliary positioning mechanism 3; the press body 2 is disposed on the rear side of the upper surface of the bearing mounting bracket 1; the auxiliary positioning mechanism 3 is disposed on the upper surface of the bearing mounting bracket 1, and the auxiliary positioning mechanism 3 is used to fix and limit the motor shaft 7 before the bearing is installed, and simultaneously trigger the rotation of the motor shaft to apply lubricant. The auxiliary positioning mechanism 3 includes a fixed bracket 301, a fixed plate 302, a stepper motor 303, a left threaded screw 304, a right threaded screw 305, a connecting rod 306, a displacement drive block 308, an arc-shaped retaining ring 310, and a linkage arm. 311. Rotary shaft drive rack 313 and lubricant cylinder 314; Two fixed brackets 301 are provided, one on the left and one on the right of the upper surface of the bearing mounting bracket 1. Fixed plates 302 are fixedly connected to the outer sides of the upper surfaces of both fixed brackets 301. A left threaded screw 304 and a right threaded screw 305 are rotatably connected to the inner sides of the two fixed plates 302, respectively. Connecting rods 306 are fixedly connected to the ends of the left and right threaded screws 304 and 305 away from the corresponding fixed plates 302. Opposing drive blocks 308 are threadedly connected to the outer surfaces of both the left and right threaded screws 304 and 305. The opposing drive blocks 308 are symmetrically arranged, and each of the two opposing drive blocks 308 has a connecting arm 309 fixedly connected to its upper surface. The ends of the two connecting arms 309 away from the opposing opposing drive blocks 308 are respectively located on the left and right sides of the upper surface of the pressure table 9. The lower end of the pressure table 9 is fixedly connected to the upper surface of the bearing mounting bracket 1. Each of the two connecting arms 309 has a linkage arm 311 located on the outer side of one end of the pressure table 9. Each of the two linkage arms 311 has a rotating shaft drive rack 313 located on the inner side of the two linkage arms 311. Two fixing rods 312 are fixedly connected between the rotating shaft drive rack 313 and the linkage arm 311. The two connecting arms 309 are fixedly connected to one end of the pressure table 9. There is an arc-shaped retaining ring 310, and a rotating shaft drive rack 313 is set on the upper front side of the arc-shaped retaining ring 310. Two lubricating fluid cylinders 314 are fixedly connected to the upper surface of the two rotating shaft drive racks 313. A lubricating fluid ball 315 is embedded in the inner side of the lubricating fluid cylinder 314. A lubrication plug 316 is threadedly connected to the upper surface of each lubricating fluid cylinder 314. Limiting slide rails 307 are fixedly connected to the upper surface of the two fixed brackets 301. A displacement drive block 308 is slidably connected to the upper surface of the limiting slide rail 307. A stepper motor 303 is fixedly connected to the outer side of the left fixed bracket 301. The output end of the stepper motor 303 is connected to the left threaded screw 304 for transmission.

[0035] During operation, after inserting the lower end of the motor shaft 7 to be installed into the slot of the pressure table 9, the stepper motor 303 starts, and its output drives the left threaded screw 304 to rotate. The left threaded screw 304 and the right threaded screw 305 are connected by a connecting rod 306. The rotation of the left threaded screw 304 will drive the right threaded screw 305 to rotate synchronously through the connecting rod 306. When the left threaded screw 304 and the right threaded screw rotate, due to the action of the threads, the two opposing drive blocks 308 will move closer to each other along the screw axis. As the opposing drive blocks 308 move closer to each other, the arc-shaped retaining rings 310 fixedly connected to their upper surfaces also move closer to each other. When the inner working surface of the arc-shaped retaining ring 310 contacts the outer circumferential surface of the motor shaft, the arc-shaped retaining ring 310 will generate a radial clamping force on the motor shaft. In this process, since the shaft drive rack 313 is located on the upper front side of the arc-shaped retaining ring 310, the shaft drive rack 313 is the first to contact the motor shaft 7 to be installed. In the stage before the arc-shaped retaining ring 310 fixes the motor shaft 7 to be installed, the shaft drive rack 313 drives the motor shaft to rotate through friction with the outer circumferential surface of the motor shaft and in an alternating force manner. At the same time as the motor shaft is forced to rotate, the lubricated ball bearings 315 located below the shaft drive rack 313 start to work. The ball bearings roll as the shaft rotates, and the lubricant that has been pre-applied to the ball bearings or the surrounding area is evenly applied to the outer circumferential surface of the shaft through friction and rolling, especially the mating area where the bearing will be installed. In this way, during the process of the bearing ring 8 being pressed against the motor shaft, the absolute stability of the shaft is ensured by fixing and limiting the motor shaft. At the same time, the pre-applied uniform lubricating layer can significantly reduce the frictional resistance and heat generation when the bearing is pressed in, reduce the risk of damage to the mating surface, and ensure that the bearing can be pressed into the predetermined position smoothly and accurately, thereby achieving efficient, high-quality, and low-damage bearing installation.

[0036] Example 2: A linkage protection mechanism 4 based on Example 1; the linkage protection mechanism 4 is located on the front side below the press body 2. The linkage protection mechanism 4 is used to trigger the flip protection plate 404 to flip during the pressing and installation of the bearing ring 8. The linkage protection mechanism 4 includes a movable arm 401, a connecting slider 402, a connecting slide rail 403, a flip protection plate 404, a connecting frame 405, a flip shaft 406, an outward extension arm 407, and a limiting shaft 408. The rear end of the movable arm 401 is rotatably connected to the front side of the bearing pressure ring 6, and the front end of the movable arm 401 is rotatably connected to the upper surface of the connecting slider 402. The lower end of the connecting slider 402 is slidably connected to the upper surface of the connecting slide rail 403. The lower end is fixedly connected to the upper surface of the flip protection plate 404. The front end of the flip protection plate 404 is fixedly connected to the rear side of the flip shaft 406. The left and right ends of the flip shaft 406 are rotatably connected to the left and right sides inside the connecting frame 405. A torsion spring is provided at the rotatable connection between the flip shaft 406 and the connecting frame 405. The connecting frame 405 is fixedly connected to the front side of the pressure table 9. The left and right ends of the rear side of the connecting frame 405 are both fixedly connected to the extended arms 407. A limit shaft 408 is rotatably connected between the two extended arms 407. The limit shaft 408 passes through the middle of the movable arm 401 laterally. A slot is provided in the middle of the upper surface of the pressure table 9. The motor shaft 7 to be installed is provided inside the slot. The upper surface of the motor shaft 7 to be installed is provided with A bearing ring 8 is provided, and a hydraulic rod 5 is provided on the lower surface of the press body 2. The fixed end of the hydraulic rod 5 is fixedly connected to the press body 2, and the free end of the hydraulic rod 5 is fixedly connected to a bearing pressure ring 6. When the operator starts the press, the hydraulic rod 5 begins to extend downward, driving the bearing pressure ring 6 to move downward, preparing to press the bearing ring 8. As the bearing pressure ring 6 moves downward, the rear end of the movable arm 401 connected to its front side also moves downward. The downward movement of the rear end of the movable arm 401 will drive its front end to swing downward. Since the lower end of the connecting slider 402 is slidably connected to the upper surface of the connecting slide rail 403, and the connecting slide rail 403 itself is fixed to the upper surface of the flip protection plate 404, the connecting slider 402 has no... The slide can only move forward along the slide rail. Under the thrust of the movable arm 401, the flip protection plate 404 overcomes the resistance of the torsion spring and flips backward around the flip shaft 406. During the flipping process, the surface of the flip protection plate 404 moves to the front of the bearing pressing area, forming a physical barrier that blocks the path in front of the pressure table 9 slot, ensuring that the operator cannot put their hand in. At the most dangerous moment when the bearing ring 8 is pressed, the flip protection plate 404 automatically rises, forming a physical barrier that completely eliminates the possibility of the operator putting their hand into the narrow and dangerous area between the pressure ring and the bearing ring 8 due to distraction, habit, or misoperation.After the bearing ring 8 is installed in place, the operator controls the hydraulic rod 5 to rise, and the bearing pressure ring 6 rises accordingly. The rear end of the movable arm 401 rises with the pressure ring, driving the front end to swing upwards. This causes the connecting slider 402 to slide forward along the slide rail. The forward sliding of the connecting slider 402 pulls the flip protection plate 404 to flip forward around the flip axis 406, returning it to its initial position, preparing for the next press-fitting.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A press for mounting motor bearings, characterized in that: include: Bearing mounting bracket (1); Press body (2); the press body (2) is disposed on the rear side of the upper surface of the bearing mounting bracket (1); Auxiliary positioning mechanism (3); The auxiliary positioning mechanism (3) is set on the upper surface of the bearing mounting bracket (1). The auxiliary positioning mechanism (3) is used to fix and limit the motor shaft (7) before the bearing is installed, and trigger the motor shaft to rotate and apply lubricant. The auxiliary positioning mechanism (3) includes a fixed bracket (301), a fixed plate (302), a stepper motor (303), a left threaded screw (304), a right threaded screw (305), a connecting rod (306), a displacement drive block (308), an arc-shaped retaining ring (310), a linkage arm (311), a shaft drive rack (313), and a lubricant cylinder (314). Linkage protection mechanism (4); The linkage protection mechanism (4) is located on the front side below the press body (2), and the linkage protection mechanism (4) is used to trigger the flip protection plate (404) to flip during the pressing and installation of the bearing ring (8); The linkage protection mechanism (4) includes a movable arm (401), a connecting slider (402), a connecting slide rail (403), a flip protection plate (404), a connecting frame (405), a flip shaft (406), an extension arm (407), and a limiting shaft (408). The rear end of the movable arm (401) is rotatably connected to the front side of the bearing pressure ring (6), the front end of the movable arm (401) is rotatably connected to the upper surface of the connecting slider (402), the lower end of the connecting slider (402) is slidably connected to the upper surface of the connecting slide rail (403), and the lower end of the connecting slide rail (403) is fixedly connected to the upper surface of the flip protection plate (404). The front end of the flip protection plate (404) is fixedly connected to the rear side of the flip shaft (406). The left and right ends of the flip shaft (406) are rotatably connected to the left and right sides inside the connecting frame (405). A torsion spring is provided at the rotatable connection between the flip shaft (406) and the connecting frame (405). The connecting frame (405) is fixedly connected to the front side of the pressure table (9). The connecting frame (405) is fixedly connected to the left and right ends of the rear side with an extension arm (407). The two extension arms (407) are rotatably connected to a limiting shaft (408), which passes through the middle of the movable arm (401) laterally.

2. The press for mounting motor bearings according to claim 1, characterized in that: The number of fixed brackets (301) is set to two. The two fixed brackets (301) are respectively set on the left and right sides of the upper surface of the bearing mounting bracket (1). Fixed plates (302) are fixedly connected to the outer side of the upper surface of the two fixed brackets (301). Left threaded screw (304) and right threaded screw (305) are rotatably connected to the inner side of the left and right fixed plates (302). Connecting rods (306) are fixedly connected to the end of the left threaded screw (304) and right threaded screw (305) away from the corresponding fixed plate (302). The outer surface of the left threaded screw (304) and right threaded screw (305) are threadedly connected to the displacement driving block (308). The two displacement driving blocks (308) are symmetrically arranged. Connecting arms (309) are fixedly connected to the upper surface of the two displacement driving blocks (308).

3. A press for mounting motor bearings according to claim 2, characterized in that: The two connecting arms (309) are respectively located on the left and right sides of the upper surface of the pressure table (9) at the ends away from the corresponding displacement drive block (308). The lower end of the pressure table (9) is fixedly connected to the upper surface of the bearing mounting bracket (1). The two connecting arms (309) are each provided with a linkage arm (311) on the outer side of one end of the pressure table (9). The two linkage arms (311) are each provided with a rotating shaft drive rack (313) on the inner side. The rotating shaft drive rack (313) and the linkage arm (311) are fixedly connected with two fixed rods (312). The two connecting arms (309) are fixedly connected with an arc-shaped retaining ring (310) on one end of the pressure table (9). The rotating shaft drive rack (313) is located on the upper front side of the arc-shaped retaining ring (310).

4. A press for mounting motor bearings according to claim 3, characterized in that: Two lubricating fluid cylinders (314) are fixedly connected to the upper surfaces of the two rotating shaft drive racks (313). The lubricating fluid cylinders (314) are equipped with fluid loading balls (315) embedded in the inner side. Each lubricating fluid cylinder (314) is threaded with a filling plug (316) on its upper surface.

5. A press for mounting motor bearings according to claim 2, characterized in that: Both of the fixed brackets (301) are fixedly connected to the upper surface of a limiting slide rail (307), and a displacement drive block (308) is slidably connected to the upper surface of the limiting slide rail (307). A stepper motor (303) is fixedly connected to the outer side of the left fixed bracket (301), and the output end of the stepper motor (303) is connected to the left threaded screw (304) for transmission.

6. A press for mounting motor bearings according to claim 3, characterized in that: The pressure table (9) has a slot in the middle of its upper surface, and a motor shaft (7) to be installed is provided inside the slot. A bearing ring (8) is provided on the upper surface of the motor shaft (7).

7. A press for mounting motor bearings according to claim 1, characterized in that: A hydraulic rod (5) is provided on the lower surface of the press body (2). The fixed end of the hydraulic rod (5) is fixedly connected to the press body (2), and a bearing pressure ring (6) is fixedly connected to the free end of the hydraulic rod (5).

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