Automatic pressing device for motor rotor bearing

Abstract

The present application belongs to the field of motor assembly technology, and discloses an automatic press-fit device for motor rotor bearings, including a base cabinet, a workbench is arranged on the base cabinet, two slide rails are arranged on the workbench, a first slide seat and a second slide seat are slidably arranged on the slide rails, a rotor positioning seat is arranged on the first slide seat, a support seat is arranged on the second slide seat, a press-fit rod parallel to the slide rails is fixedly arranged on the support seat, a driving assembly and a fixed seat are respectively arranged on both sides of the workbench, a press-fit shaft is slidably arranged in the fixed seat, and a limit assembly for limiting the sliding of the press-fit shaft is arranged on the fixed seat. The press-fit rod moves toward the fixed seat against the bearing on the long axis side of the rotor, and the bearing on the long axis side of the rotor is pressed into place under the action of the limit assembly, and then the restriction on the press-fit shaft is released, and the bearing on the press-fit shaft is sleeved on the short axis of the rotor and pressed into place, completing the press-fitting of the bearings on both sides of the rotor, and the outer ring of the bearing is not subjected to force, which can effectively protect the bearing from damage during the press-fitting process.

Description

Technical Field

[0001] The utility model relates to the technical field of motor assembly, in particular to an automatic press-fit device for a motor rotor bearing. Background Art

[0002] When assembling an electronic rotor, the bearing needs to be assembled onto the rotor shaft. The shaft and bearing are mostly assembled using a bearing press, which uses hydraulic transmission to press the shaft into the bearing, thereby achieving a fixed connection between the shaft and the bearing. The operating steps of a traditional bearing press are: first fix the shaft on the fixture, then use the clamping mechanism to clamp the outer ring of the bearing, and finally use the hydraulic pressure to force the bearing onto the shaft to fix the shaft and the bearing. Since the clamping mechanism clamps the outer ring of the bearing during the bearing press, when the inner ring of the bearing touches the shaft during the bearing press, the outer ring of the bearing is under stress due to the fixing action of the clamping mechanism, and is displaced relative to the inner ring of the bearing, causing the gap between the outer ring and the inner ring of the bearing to gradually increase. As the gap between the inner and outer rings of the bearing increases, dust and debris in the processing environment are more likely to enter the interior of the bearing, causing the bearing to rotate less smoothly, increase friction, and even get stuck, which seriously affects the normal use of the bearing. Utility Model Content

[0003] In order to solve the above problems, the utility model provides an automatic press-fitting device for a motor rotor bearing.

[0004] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: an automatic press-fitting device for a motor rotor bearing, comprising a base cabinet, a workbench is arranged on the base cabinet, two slide rails are arranged horizontally at intervals on the workbench, a first sliding seat and a second sliding seat are slidably arranged on the slide rails, a rotor positioning seat is arranged on the first sliding seat, the upper end of the rotor positioning seat is used to place and support the motor rotor, a supporting seat is arranged on the second sliding seat, a press-fitting rod is fixedly arranged on the support seat, the press-fitting rod is arranged parallel to the slide rail, a driving component for driving the second sliding seat to slide on the slide rail is arranged on the workbench on the side of the second sliding seat away from the first sliding seat, a fixed seat is arranged on the workbench on the side of the first sliding seat away from the second sliding seat, a press-fitting shaft arranged coaxially with the press-fitting rod is slidably arranged in the fixed seat, and a limiting component for limiting the horizontal sliding of the press-fitting shaft is arranged on the side of the fixed seat away from the first sliding seat.

[0005] By adopting the above technical scheme, a rotor positioning seat, a supporting seat, a press-fitting rod, a driving assembly, a fixing seat, a press-fitting shaft and a limiting assembly are arranged. The bearing on the long axis side of the rotor is manually sleeved on the rotor shaft first, and then the long axis side of the rotor adjacent to the press-fitting rod is placed on the rotor positioning seat and fixed, and then another bearing is sleeved on the press-fitting shaft. When the driving assembly is started, the press-fitting rod is driven to move toward the rotor positioning seat, and the press-fitting rod presses against the bearing on the long axis side of the rotor to move the rotor toward the fixing seat until the rotor shaft contacts the press-fitting shaft. At this time, the limiting assembly restricts the press-fitting shaft so that the rotor After the rotor is in place, it cannot move further. Under the action of the press-fitting rod, the bearing on the long axis side of the rotor is press-fitted into place. Then the press-fitting rod and the rotor return to the opposite position for a distance. The limit assembly contacts the restriction on the press-fitting shaft. The press-fitting rod continues to push the rotor to move toward the fixed seat. The end of the short axis side of the rotating shaft contacts the press-fitting shaft, and the press-fitting shaft is pushed backward, so that the bearing on the press-fitting shaft is put onto the short axis of the rotor and press-fitted into place. In this way, the press-fitting of the bearings on both sides of the rotor is completed. The whole process is automated, and the outer ring of the bearing is not subjected to force, which can effectively protect the bearing from damage during the press-fitting process.

[0006] Furthermore, a through hole is horizontally opened in the fixing seat, a limit plate with a hole is fixedly set in the through hole, the press-fit shaft is placed in the universal hole and a limit ring is set on the shaft body, and a first spring is set on the shaft body of the press-fit shaft between the limit ring and the limit plate with a hole.

[0007] By adopting the above technical solution, a through hole, a limit plate with a hole, a limit ring and a first spring are arranged in the fixing seat. After the press-fitting shaft is pressed back by the rotor shaft, the press-fitting shaft can return to its original position under the action of the first spring.

[0008] Furthermore, the limit assembly includes a limit block arranged on the fixed seat, the limit block is provided with a slide groove adjacent to the fixed seat, a limit slider is slidably arranged in the slide groove, and the limit slider slides in the slide groove to the through hole or away from the through hole.

[0009] By adopting the above technical solution, a limit block, a slide groove, and a limit slider are set, and the limit slider can be driven to slide in the slide groove by a driving mechanism. When limiting is required, the limit slider slides to the bottom of the slide groove and is located at the rear end of the through hole, thereby blocking the through hole and limiting the backward movement of the press-fitting shaft; when the limit needs to be released, the limit slider slides to the outside of the slide groove and leaves the rear end of the through hole, so that the press-fitting shaft can move in the through hole.

[0010] Furthermore, the press-fitting rod is provided with an opening slot which opens upward, and the slot width of the opening slot is greater than the diameter of the motor rotor shaft.

[0011] By adopting the above technical solution, an open groove opening upward is provided on the press rod, so that the rotor shaft can be placed in the open groove, and the end of the press rod can move to the bearing to apply force to the inner ring of the bearing.

[0012] Furthermore, the driving assembly includes a mounting table arranged on the workbench, an electric push rod is arranged on the mounting table, a third sliding seat is arranged on the slide rail between the second sliding seat and the mounting table, a mounting seat is arranged on the third sliding seat, the push rod end of the electric push rod is fixedly connected to the mounting seat, and the mounting seat is connected to the support seat via a pressure sensor and a connecting shaft.

[0013] By adopting the above technical solution, a mounting table, an electric push rod, a mounting seat, a pressure sensor and a connecting shaft are set up. The electric push rod drives the mounting seat, the pressure sensor and the connecting shaft to push the press rod to move. The press force on the bearing can be detected by the pressure sensor.

[0014] Furthermore, a guide rod is provided at the bottom of the first sliding seat between the two slide rails, a guide hole is correspondingly opened in the fixed seat, the end of the guide rod away from the first sliding seat is placed in the guide hole, and a second spring is sleeved on the rod body of the guide rod located between the first sliding seat and the fixed seat.

[0015] By adopting the above technical solution, the guide rod, the guide hole and the second spring are provided, so that after the press fitting rod returns to its original position after the press fitting is completed, the first sliding seat can drive the rotor positioning seat to return to its original position under the action of the second spring.

[0016] Furthermore, a screw rod is rotatably arranged on the workbench beside the slide rail, a rotating wheel is arranged at one end of the screw rod, a sleeve is spirally arranged on the screw rod, an anti-rotation plate with a bottom flush with the workbench is arranged on the sleeve, a limiting seat is arranged on the side of the first sliding seat adjacent to the screw rod, the limiting seat is arranged on the side of the sleeve adjacent to the fixed seat, and an avoidance groove for avoiding the screw rod is opened in the limiting seat.

[0017] By adopting the above technical solution, a screw rod, a rotating wheel, a sleeve, an anti-rotation plate, a limit seat and an avoidance groove are provided, and the position of the sleeve on the screw rod can be adjusted by rotating the screw rod, thereby limiting the relative position of the first sliding seat. In this way, the initial position of the first sliding seat can be limited according to the length of different rotor shafts, thereby optimizing the sliding stroke of the first sliding seat.

[0018] Furthermore, the workbench is also provided with a clamping block sleeved on the screw rod, a notch is horizontally opened on one side of the clamping block, and a locking bolt is arranged on the notch side of the clamping block.

[0019] By adopting the above technical solution, a clamping block, a notch and a locking bolt are provided, and the sleeve can be prevented from moving by itself by locking the screw rod through the locking bolt.

[0020] In summary, the utility model has the following beneficial effects: in the present application, by arranging a rotor positioning seat, a supporting seat, a press-fitting rod, a driving assembly, a fixing seat, a press-fitting shaft and a limiting assembly, the bearing on the long axis side of the rotor is first manually sleeved on the rotor shaft, and then the long axis side of the rotor adjacent to the press-fitting rod side is placed on the rotor positioning seat and fixed, and then another bearing is sleeved on the press-fitting shaft, and when the driving assembly is started to drive the press-fitting rod to move toward the rotor positioning seat, the press-fitting rod presses against the bearing on the long axis side of the rotor to move the rotor toward the fixing seat until the rotor shaft contacts the press-fitting shaft, and at this time, the limiting assembly limits The press-fitting shaft is controlled so that the rotor cannot move further after it is in place. The bearing on the long axis side of the rotor is press-fitted into place under the action of the press-fitting rod, and then the press-fitting rod and the rotor return in the opposite direction for a distance. The limit assembly contacts the restriction on the press-fitting shaft, and the press-fitting rod continues to push the rotor to move in the direction of the fixed seat. The end of the short axis side of the rotating shaft contacts the press-fitting shaft, and the press-fitting shaft is pushed backward, so that the bearing on the press-fitting shaft is put onto the short axis of the rotor and press-fitted into place. In this way, the press-fitting of the bearings on both sides of the rotor is completed. The whole process is automated, and the outer ring of the bearing is not subjected to force, which can effectively protect the bearing from damage during the press-fitting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0022] Figure 2 yes Figure 1 A partial enlarged schematic diagram of

[0023] Figure 3 It is a schematic diagram of the planar structure of the embodiment of the utility model in the working state;

[0024] Figure 4 This is a schematic diagram of the structure of the fixing seat of the embodiment of the utility model;

[0025] Figure 5 It is a cross-sectional schematic diagram of a fixing seat according to an embodiment of the utility model.

[0026] In the figure: A, rotor; B, bearing; 10, base cabinet; 11, workbench; 12, slide rail; 13, first sliding seat; 14, second sliding seat; 15, limit seat; 16, avoidance groove; 20, rotor positioning seat; 30, support seat; 31, press rod; 32, opening groove; 40, drive assembly; 41, mounting table; 42, electric push rod; 43, third sliding seat; 44, mounting seat; 45, pressure sensor; 46, Connecting shaft; 50, fixing seat; 51, press-fitting shaft; 52, through hole; 53, limit plate with hole; 54, limit ring; 55, first spring; 60, limit assembly; 61, limit block; 62, slide groove; 63, limit slider; 71, guide rod; 72, guide hole; 73, second spring; 81, screw rod; 82, rotating wheel; 83, sleeve; 84, anti-rotation plate; 85, clamping block; 86, notch; 87, locking bolt. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0028] like Figure 1-5 As shown, the embodiment of the present application discloses an automatic press-fit device for a motor rotor bearing, comprising a base cabinet 10, a workbench 11 is arranged on the base cabinet 10, two slide rails 12 are arranged horizontally at intervals on the workbench 11, a first slide seat 13 and a second slide seat 14 are slidably arranged on the slide rail 12, and a driving assembly 40 and a fixing seat 50 are respectively arranged on the workbench 11 at both ends of the slide rail 12. A rotor positioning seat 20 is arranged on the first slide seat 13, and the upper end of the rotor positioning seat 20 is used to place and support the motor rotor A. Specifically, a plurality of vertically arranged support plates are arranged on the rotor positioning seat 20, and a support groove is arranged on the upper end of the support plate for supporting the rotor A and the rotor shaft. By setting the height of the support plate and the support groove and the distance between adjacent support plates, the rotor A can be limited in the axial direction, thereby facilitating the press-fitting of the bearing B.

[0029] A support seat 30 is provided on the second sliding seat 14, and a press rod 31 is fixedly provided on the support seat 30. The press rod 31 is arranged in parallel with the slide rail 12, and an opening slot 32 opening upward is provided on the press rod 31. The slot width of the opening slot 32 is larger than the diameter of the motor rotor shaft, so that the rotor shaft can be placed in the opening slot 32. The inner contour of the end face of the press rod 31 near the rotor positioning seat 20 should be within the radial dimension range of the inner ring of the bearing B, and the outer contour of the end face should be smaller than the inner diameter of the outer ring of the bearing B, so that the press rod 31 will abut against the inner ring of the bearing B during press fitting, and the bearing B will be pressed onto the rotor shaft by applying force to the inner ring of the bearing B, so that the bearing B will not be damaged due to the forces in different directions on the inner and outer rings of the bearing B.

[0030] The driving assembly 40 is arranged on the workbench 11 on the side of the second sliding seat 14 away from the first sliding seat 13. The driving assembly 40 includes a mounting table 41 arranged on the workbench 11 and a third sliding seat 43 slidably arranged on the slide rail 12, the third sliding seat 43 is located between the second sliding seat 14 and the mounting table 41, a mounting seat 44 is arranged on the third sliding seat 43, and the mounting seat 44 is connected to the support seat 30 through a pressure sensor 45 and a connecting shaft 46. An electric push rod 42 is arranged on the mounting table 41, and the push rod end of the electric push rod 42 is fixedly connected to the mounting seat 44. The electric push rod 42 transmits the thrust to the press rod 31 through the mounting seat 44, the pressure sensor 45, the connecting shaft 46, and the support seat 30, and the press force of each press can be measured by the pressure sensor 45.

[0031] The fixed seat 50 is arranged on the workbench 11 on the side of the first sliding seat 13 away from the second sliding seat 14. A through hole 52 is horizontally opened in the fixed seat 50. A stop plate 53 with a hole is fixedly arranged in the through hole 52. A press-fitting shaft 51 arranged coaxially with the press-fitting rod 31 is also slidably arranged in the through hole 52. The press-fitting shaft 51 is placed in the universal hole and a stop ring 54 is arranged on the shaft body. A first spring 55 is arranged on the shaft body of the press-fitting shaft 51 between the stop ring 54 and the stop plate 53 with a hole. In the initial state, the rear end of the press-fitting shaft 51 is arranged adjacent to the rear end of the through hole 52, and the front end of the press-fitting shaft 51 protrudes from the fixed seat 50, so that the shaft body of the press-fitting shaft 51 protruding from the fixed seat 50 can be used to place the bearing B. In this way, when the rotor shaft presses the press-fitting shaft 51, the press-fitting shaft 51 is forced to retreat, and the first spring 55 is compressed at this time, thereby transferring the bearing B to the rotor shaft and press-fitting it in place under the continuous pressure of the rotor shaft. After the press-fitting is completed, the rotor shaft returns to its original position, and the press-fitting shaft 51 can also return to its original position under the elastic force of the first spring 55 .

[0032] A limiting assembly 60 for limiting the horizontal sliding of the press-fitting shaft 51 is arranged on the side of the fixed seat 50 away from the first sliding seat 13. The limiting assembly 60 includes a limiting block 61 arranged on the fixed seat 50, a slide groove 62 is provided on the side of the limiting block 61 near the fixed seat 50, the slide groove 62 is connected with the through hole 52, a limiting slider 63 is slidably arranged in the slide groove 62, and a driving mechanism (not shown in the figure) is also arranged on the limiting block 61, the driving mechanism is used to drive the limiting slider 63 to move in the slide groove 62, when the limiting slider 63 slides in the slide groove 62 to the through hole 52, the limiting slider 63 blocks the rear end of the through hole 52, so that the press-fitting shaft 51 cannot move backward in the through hole 52, and thus is not limited. When it is not necessary to limit the press-fitting shaft 51, it is only necessary to drive the limiting slider 63 to slide away from the position of the through hole 52, so that the rear end of the through hole 52 is not blocked by the limiting slider 63, and the press-fitting shaft 51 can move backward in the through hole 52.

[0033] A guide rod 71 is provided between the two slide rails 12 at the bottom of the first sliding seat 13, and a guide hole 72 is correspondingly provided in the fixed seat 50. The end of the guide rod 71 away from the first sliding seat 13 is placed in the guide hole 72 to form a guide fit, and a second spring 73 is sleeved on the rod body of the guide rod 71 located between the first sliding seat 13 and the fixed seat 50. During the press-fitting operation, the first sliding seat 13 and the rotor positioning seat 20 will be pushed to the vicinity of the fixed seat 50, at which time the second spring 73 will be compressed; after the press-fitting is completed, the driving assembly 40 will drive the press-fitting rod 31 to return to its original position, at which time the first sliding seat 13 and the rotor positioning seat 20 lose thrust, that is, they will return to their original position under the action of the second spring 73.

[0034] A screw rod 81 is also provided on the workbench 11 for rotation beside the slide rail 12. A rotating wheel 82 is provided at one end of the screw rod 81. A sleeve 83 is spirally provided on the screw rod 81. An anti-rotation plate 84 whose bottom is flush with the workbench 11 is provided on the sleeve 83. When the screw rod 81 is rotated by the rotating wheel 82, the sleeve 83 moves horizontally on the screw rod 81 under the action of the anti-rotation plate 84, so that the position of the sleeve 83 can be adjusted by rotating the screw rod 81. A limit seat 15 is provided on the side of the first sliding seat 13 near the screw rod 81. The limit seat 15 is arranged on the side of the sleeve 83 near the fixed seat 50. An avoidance groove 16 for avoiding the screw rod 81 is provided in the limit seat 15. The blocking effect of the sleeve 83 on the limit seat 15 can be used to adjust the distance between the first sliding seat 13 and the fixed seat 50, so that the movement stroke of the rotor positioning seat 20 during the press-fitting operation can be adjusted. Since the lengths of the rotor shafts of different types of rotors A are different, when the rotor shaft on the short axis side of rotor A is shorter, the distance between the first sliding seat 13 and the fixed seat 50 can be shortened by the screw 81 and the sleeve 83, thereby reducing the pushing stroke of the rotor positioning seat 20 during press-fitting, thereby reducing energy consumption and improving press-fitting efficiency. In the specific setting, a clamping block 85 sleeved on the screw 81 is also provided on the workbench 11, and a notch 86 is horizontally opened on one side of the clamping block 85, and a locking bolt 87 is provided on the notch 86 side of the clamping block 85. When the position of the sleeve 83 needs to be adjusted, the locking bolt 87 is loosened; after the adjustment is completed, the locking bolt 87 is tightened, and the screw 81 is clamped by the clamping block 85 to prevent the screw 81 from rotating without reason and affecting the position of the sleeve 83.

[0035] The use principle of an automatic press-fitting device for a motor rotor bearing in the present embodiment is as follows: a bearing B sleeve is arranged on the long axis side of the rotor A, and another bearing B sleeve is arranged on the press-fitting shaft 51, and then the rotor A is placed on the rotor positioning seat 20, the long axis side of the rotor A is arranged adjacent to the press-fitting rod 31 and the rotor shaft portion is placed in the opening groove 32 of the press-fitting rod 31; the electric push rod 42 is started to push the press-fitting rod 31 to move in the direction of the rotor positioning seat 20, so that the end face of the press-fitting rod 31 contacts the end face of the bearing B and then pushes the rotor positioning seat 20 to move in the direction of the fixed seat 50, at this time, the limiting slider 63 of the limiting assembly 60 is blocked at the rear end of the through hole 52, when the rotor positioning seat 20 moves to the short axis side of the rotor A and contacts the press-fitting shaft 51, the press-fitting shaft 51 is limited, resulting in the rotor positioning seat 20 and the rotor A cannot continue to move, at this time the press-fitting rod 31 will push the bearing B to move in the direction of the rotor A until it is pressed into place, and the pressure sensor 45 records the press-fitting force of the first bearing B; after the press-fitting is completed, the electric push rod 42 pulls the press-fitting shaft 51 to move in the opposite direction to dissipate the force. The first sliding seat 13 will also return to a certain distance under the action of the second spring 73. Then the driving mechanism of the limit assembly 60 drives the limit slider 63 to leave the rear end of the through hole 52 to release the limit of the press-fitting shaft 51. The electric push rod 42 pushes the press-fitting rod 31 to move toward the rotor positioning seat 20 again, pushing the rotor A toward the fixed seat 50. After the short axis side of the rotor A contacts the press-fitting shaft 51, it will push the press-fitting shaft 51 backward. Since the bearing B will be fixed The press-fitting shaft 51 is blocked by the seat 50, so when the press-fitting shaft 51 moves backward, the short shaft of the rotor A will replace the press-fitting shaft 51 and enter the inner ring of the bearing B, thereby transferring the bearing B to the short shaft of the rotor A and press-fitting it into place, and the pressure sensor 45 records the press-fitting force of the second bearing B; after the press-fitting is completed, the electric push rod 42 drives the press-fitting rod 31 to return, the first sliding seat 13 returns under the action of the second spring 73, and the press-fitting shaft 51 returns under the action of the first spring 55, and the pressed-fitted rotor is removed, and the next press-fitting is continued.

[0036] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An automatic press-fitting device for a motor rotor bearing, comprising a base cabinet (10), wherein a workbench (11) is arranged on the base cabinet (10), wherein: Two slide rails (12) are arranged horizontally at intervals on the workbench (11); a first slide seat (13) and a second slide seat (14) are slidably arranged on the slide rail (12); a rotor positioning seat (20) is arranged on the first slide seat (13); the upper end of the rotor positioning seat (20) is used to place and support the fixed rotor (A); a support seat (30) is arranged on the second slide seat (14); a press rod (31) is fixedly arranged on the support seat (30); the press rod (31) is arranged parallel to the slide rail (12); the second slide seat (14) A driving assembly (40) for driving the second sliding seat (14) to slide on the slide rail (12) is arranged on the workbench (11) at a side away from the first sliding seat (13); a fixed seat (50) is arranged on the workbench (11) at a side away from the second sliding seat (14); a press-fitting shaft (51) coaxially arranged with the press-fitting rod (31) is slidably arranged in the fixed seat (50); and a limit assembly (60) for limiting the horizontal sliding of the press-fitting shaft (51) is arranged on a side away from the first sliding seat (13) of the fixed seat (50).

2. The automatic press-fitting device for a motor rotor bearing according to claim 1 is characterized in that: A through hole (52) is horizontally opened in the fixing seat (50), a limit plate (53) with a hole is fixedly arranged in the through hole (52), the press-fit shaft (51) is placed in the universal hole and a limit ring (54) is arranged on the shaft body, and a first spring (55) is arranged on the shaft body of the press-fit shaft (51) between the limit ring (54) and the limit plate (53) with a hole.

3. The automatic press-fitting device for a motor rotor bearing according to claim 2 is characterized in that: The limiting assembly (60) comprises a limiting block (61) arranged on the fixed seat (50), a sliding groove (62) is provided on the side of the limiting block (61) adjacent to the fixed seat (50), a limiting slider (63) is slidably arranged in the sliding groove (62), and the limiting slider (63) slides in the sliding groove (62) to the through hole (52) or away from the through hole (52).

4. The automatic press-fitting device for a motor rotor bearing according to claim 1 is characterized in that: The press-fitting rod (31) is provided with an opening slot (32) opening upward, and the slot width of the opening slot (32) is greater than the diameter of the motor rotor shaft.

5. The automatic press-fitting device for a motor rotor bearing according to claim 1 is characterized in that: The driving assembly (40) comprises a mounting platform (41) arranged on a workbench (11), an electric push rod (42) being arranged on the mounting platform (41), a third sliding seat (43) being arranged on the slide rail (12) between the second sliding seat (14) and the mounting platform (41), a mounting seat (44) being arranged on the third sliding seat (43), a push rod end of the electric push rod (42) being fixedly connected to the mounting seat (44), and the mounting seat (44) being connected to the support seat (30) via a pressure sensor (45) and a connecting shaft (46).

6. The automatic press-fitting device for motor rotor bearing according to claim 1 is characterized in that: A guide rod (71) is arranged at the bottom of the first sliding seat (13) between the two slide rails (12), a guide hole (72) is correspondingly opened in the fixed seat (50), one end of the guide rod (71) away from the first sliding seat (13) is placed in the guide hole (72), and a second spring (73) is sleeved on the rod body of the guide rod (71) located between the first sliding seat (13) and the fixed seat (50).

7. The automatic press-fitting device for a motor rotor bearing according to claim 1 is characterized in that: A screw rod (81) is rotatably arranged on the workbench (11) beside the slide rail (12), a rotating wheel (82) is arranged at one end of the screw rod (81), a sleeve (83) is spirally arranged on the screw rod (81), an anti-rotation plate (84) whose bottom is flush with the workbench (11) is arranged on the sleeve (83), a limiting seat (15) is arranged on a side of the first sliding seat (13) adjacent to the screw rod (81), the limiting seat (15) is arranged on a side of the sleeve (83) adjacent to the fixed seat (50), and an avoidance groove (16) for avoiding the screw rod (81) is opened in the limiting seat (15).

8. The automatic press-fitting device for motor rotor bearings according to claim 7 is characterized in that: The workbench (11) is also provided with a clamping block (85) sleeved on the screw rod (81), one side of the clamping block (85) is horizontally provided with a notch (86), and a locking bolt (87) is provided on the notch (86) side of the clamping block (85).

Images