A deep groove ball bearing raceway hooking and dismounting device and dismounting method

Abstract

The application relates to a deep-groove ball bearing raceway hooking and pulling dismounting device which comprises a base plate, a screw rod and at least one pulling rod, the base plate is provided with a mounting groove and a threaded hole, one end of the pulling rod is detachably arranged in the mounting groove, the other end of the screw rod is abutted against a workpiece spindle, the end of the screw rod away from the workpiece spindle is provided with an operating hole, the operating hole is detachably provided with a force applying rod, an acting force is applied to the force applying rod to drive the screw rod to rotate, the screw rod drives the base plate to pull the pulling rod to move away from the workpiece spindle through rotation, the one end of the pulling rod is detachably arranged in the mounting groove, the spherical flat end head at the other end of the pulling rod is inserted into bearing play, the spherical flat end head is clamped in the bearing play through rotation, the one end of the screw rod is abutted against the workpiece spindle fixed by the bearing, then the screw rod is rotated through the force applying rod, the screw rod cannot move in the axial direction, the base plate is driven to move in the reverse direction through reverse torsion, then the spherical flat end head is driven to move away from the workpiece through the base plate, so that the bearing is pulled out.

Description

Technical Field

[0001] This invention relates to the field of bearing disassembly devices, and in particular to a deep groove ball bearing raceway hook disassembly device and disassembly method. Background Technology

[0002] Bearings are commonly used components in mechanical equipment. After a certain number of years of use, bearings inevitably experience wear or aging, requiring them to be disassembled and replaced. The traditional method for disassembling bearings usually involves using a three-jaw puller to remove the bearing from the spindle. However, when using a three-jaw puller, the jaws need to hook from the outer ring of the bearing inward to hook onto the bottom of the bearing and then apply force to pull it out. Sometimes, the entire bearing component is installed inside the countersunk hole of the equipment housing, or even in cases where the outer ring of the bearing is interference-fitted with the housing that holds the bearing. This can lead to situations where the jaws of a traditional three-jaw puller cannot reach the bottom of the bearing to apply force and pull it out. Summary of the Invention

[0003] Therefore, it is necessary to provide a deep groove ball bearing raceway hooking and disassembly device and method to address the problem that the claws of a traditional three-jaw puller cannot reach the bottom of the bearing to apply force and pull it off when the entire bearing component is installed inside the equipment housing.

[0004] A deep groove ball bearing raceway hooking and disassembly device is characterized by comprising a base plate, a screw, and at least one pull rod. The base plate is provided with a mounting groove and a threaded hole. One end of the pull rod is detachably disposed in the mounting groove. The end of the pull rod away from the base plate is provided with a spherical flat end that inserts into the bearing clearance and is locked in the bearing clearance by rotation. One end of the screw passes through the threaded hole and is threadedly connected to the base plate. The other end of the screw abuts against the workpiece spindle. The end of the screw away from the workpiece spindle is provided with an operating hole. A force-applying rod is detachably disposed in the operating hole. Applying force to the force-applying rod causes the screw to rotate. The rotation of the screw causes the base plate to pull the pull rod away from the workpiece spindle.

[0005] In one embodiment, the threaded hole is located at the center of the substrate.

[0006] In one embodiment, the mounting groove is elongated, and the pull rod moves back and forth within the mounting groove.

[0007] In one embodiment, a plurality of mounting slots are provided, which are evenly arranged around the substrate, and a plurality of pull rods are provided accordingly, each pull rod being disposed within a mounting slot.

[0008] In one embodiment, the end of the pull rod away from the spherical flat end is provided with an external thread, and a fastener is provided on the external thread. The external thread and the fastener cooperate to fix the pull rod in the mounting groove.

[0009] In one embodiment, the spherical flat end is provided with a pair of parallel planes and an annular surface that is connected to the two parallel planes respectively. The distance between the parallel planes is less than the width of the bearing clearance, and the width of the bearing clearance is less than the diameter of the annular surface.

[0010] In one embodiment, the pull rod is a cylinder, and the pull rod includes a fixed part and a working part. The diameter of the fixed part is smaller than the diameter of the working part near the end of the fixed part. The working part includes several segments, and the diameter of each segment of the working part increases sequentially from the spherical flat end toward the fixed part.

[0011] In one embodiment, a four-way drive head is provided at the end of the screw away from the workpiece spindle for connecting a torque wrench or a ratchet wrench.

[0012] A method for disassembling a deep groove ball bearing includes the following steps: S1 Removes all or part of the bearing balls from the bearing to form the bearing clearance between the inner and outer rings of the bearing; S2 Insert the spherical flat end into the bearing clearance with the plane facing the bearing clearance; S3 rotates the pull rod around its own axis by a predetermined angle, so that the spherical flat end changes from the planar direction to the thickness direction and gets into the bearing clearance, thereby hooking the bearing; S4 Insert the force-applying rod into the operating hole, rotate the force-applying rod to make the end of the screw away from the base plate abut against the workpiece spindle sleeved in the center of the bearing, and convert the rotational torque into a pulling force along the axial direction of the screw, so as to move the bearing toward the base plate and pull it out.

[0013] The aforementioned deep groove ball bearing raceway hooking and disassembly device includes a base plate, a screw, and at least one pull rod. The base plate is provided with a mounting groove and a threaded hole. One end of the pull rod is detachably mounted in the mounting groove. The end of the pull rod away from the base plate is provided with a spherical flat end that inserts into the bearing clearance and is locked in the bearing clearance by rotation. One end of the screw passes through the threaded hole and is threadedly connected to the base plate. The other end of the screw abuts against the workpiece spindle. The end of the screw away from the workpiece spindle is provided with an operating hole. A force-applying rod is detachably mounted in the operating hole. Applying force to the force-applying rod drives the screw to rotate. The screw rotates, causing the base plate to pull the tie rod away from the workpiece spindle. One end of the tie rod is detachably mounted in the mounting groove, and the spherical flat end of the other end of the tie rod is inserted into the bearing clearance. The spherical flat end is locked in the bearing clearance by rotation. One end of the screw rests against the workpiece spindle where the bearing is fixed. Then, by applying force, the screw is rotated. The screw cannot move axially. Through reverse torque, the base plate moves in the opposite direction. In turn, the base plate drives the spherical flat end to hook the bearing and move it away from the workpiece, thereby pulling out the bearing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a deep groove ball bearing raceway hook disassembly device according to one embodiment; Figure 2 This is a schematic diagram of the base plate, screw, and pull rod of a deep groove ball bearing raceway hooking and disassembly device according to one embodiment; Figure 3 This is a schematic diagram of another base plate, screw, and pull rod of the deep groove ball bearing raceway hooking and disassembly device according to one embodiment; Figure 4 A schematic diagram of the base plate of the deep groove ball bearing raceway hook removal device according to one embodiment; Figure 5 A schematic diagram of the structure of a deep groove ball bearing raceway hook disassembly device according to another embodiment; Figure 6 This is a schematic diagram of the base plate, screw, and pull rod of a deep groove ball bearing raceway hooking and disassembly device according to another embodiment; Figure 7 This is a schematic diagram of another base plate, screw, and pull rod of a deep groove ball bearing raceway hook removal device according to another embodiment; Figure 8 This is a schematic diagram of the base plate of a deep groove ball bearing raceway hook removal device according to another embodiment.

[0015] In the diagram: 10, base plate; 110, mounting groove; 111, opening; 120, threaded hole; 20, screw; 210, operating hole; 211, force application rod; 220, abutment part; 30, pull rod; 310, spherical flat end; 311, plane; 312, annular surface; 320, fixing part; 330, working part; 40, bearing; 410, bearing clearance; 420, bearing ball; 50, workpiece spindle; 60, fastener. Detailed Implementation

[0016] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] like Figure 1 and Figure 5 As shown, a deep groove ball bearing raceway hooking and disassembly device includes a base plate 10, a screw 20, and at least one pull rod 30. The base plate 10 is provided with a mounting groove 110 and a threaded hole 120. One end of the pull rod 30 is detachably disposed in the mounting groove 110. The end of the pull rod 30 away from the base plate 10 is provided with a spherical flat end 310 that is inserted into the bearing clearance 410 of the bearing 40 and is rotated and locked in the bearing clearance 410. One end of the screw 20 passes through the threaded hole 120 and is threadedly connected to the base plate 10. The other end of the screw 20 abuts against the workpiece spindle 50. The end of the screw 20 away from the workpiece spindle 50 is provided with an operating hole 210. A force-applying rod 211 is detachably disposed in the operating hole 211. Applying force to the force-applying rod 211 causes the screw 20 to rotate. The rotation of the screw 20 causes the base plate 10 to pull the pull rod 30 in a direction away from the workpiece spindle 50. For example, the substrate 10 can be shaped like a cuboid or a disk. When the number of mounting slots 110 is odd, such as three or five, the substrate 10 is shaped like a disk to facilitate the even distribution of the mounting slots 110 on the substrate 10. When the number of mounting slots 110 is even, such as two or four, the substrate 10 can also be shaped like a cuboid, or the mounting slots 110 can be evenly distributed on the substrate 10 to facilitate the substrate 10 pulling the pull rod 30 so that each pull rod 30 is evenly stressed. The spherical flat end 310 is made of 40Cr or SKD11 material and heat-treated to HRC 45-50 to ensure that the spherical flat end 310 does not deform or break under high stress. The screw 20 is made of M10×50mm specification and is made of 12.9 grade SCM440 alloy steel, with a strength higher than that of the pull rod 30. The spherical flat end 310 is a structure in which the two sides of the sphere are machined into flat surfaces.

[0018] like Figure 2 and Figure 4 As shown, in one embodiment, the threaded hole 120 is located at the center of the substrate 10. For example, the screw 20 has threads (not shown) on its surface. One end of the screw 20 passes through the threaded hole 120 and is threadedly connected to the substrate 10. The screw 20 is rotated to achieve helical transmission between the screw 20 and the substrate 10. The end of the screw 20 near the bearing 40 is provided with an abutment portion 220. The diameter of the abutment portion 220 is smaller than the diameter of the end of the screw 20 near the substrate 10, so that the abutment portion 220 can abut against the workpiece spindle 50 at the center of the bearing 40. The screw 20 is located at the center of the substrate 10 through the threaded hole 120, which makes the movement of the substrate 10 more stable when the screw 20 moves through the threaded hole 120, and avoids shaking.

[0019] like Figure 4 and Figure 8 As shown, in one embodiment, the mounting groove 110 is elongated, and the pull rod 30 moves back and forth within the mounting groove 110. For example, the elongated shape of the mounting groove 110 allows the pull rod 30 to move back and forth within it. The user can adjust the distance between the pull rods 30 by moving their positions, and can adapt to pulling out bearings 40 of different diameters by moving the pull rods 30. Furthermore, the mounting groove 110 can be either open or closed. When the mounting groove 110 has an opening 111, the pull rod 30 can enter directly through the opening 111. When the mounting groove 110 is closed, the pull rod 30 can enter the mounting groove 110 by passing directly through it.

[0020] like Figure 2 , Figure 4 , Figure 6 , Figure 8 As shown, in one embodiment, a plurality of mounting grooves 110 are provided, which are evenly arranged around the substrate 10. A plurality of pull rods 30 are correspondingly provided, each pull rod 30 being disposed within a mounting groove 110. For example, two mounting grooves 110 can be provided, which are symmetrically distributed on the substrate 10. Each mounting groove 110 is provided with a pull rod 30, and the two pull rods 30 are also symmetrically arranged within the mounting groove 110 with the threaded hole 120 as the center. Alternatively, three mounting grooves 110 can be provided, which are evenly arranged around the center of the substrate 10. The included angle between two adjacent mounting grooves 110 is 120°. Through the even distribution of the mounting grooves 110, it can be ensured that the bearing 40 is subjected to uniform force and does not tilt during the pulling process.

[0021] In one embodiment, the end of the pull rod 30 away from the spherical flat end 310 is provided with an external thread (not shown in the figure), and a fastener is provided on the external thread. The external thread mates with the fastener 60 to fix the pull rod 30 in the mounting groove 110. For example, the fastener can be a screw. When the fixing part is placed in the mounting groove 110, the end of the fixing part away from the spherical flat end 310 is provided with the fastener 60. The diameter of the fixing part is smaller than the width of the mounting groove 110, and the width of the mounting groove 110 is smaller than the width of the fastener 60 fixed in the mounting groove 110, so as to facilitate fixing the pull rod 30 in the mounting groove 110.

[0022] like Figure 3 and Figure 7 As shown, in one embodiment, the spherical flat end 310 is provided with a pair of mutually parallel planes 311 and an annular surface 312 that is connected to the two mutually parallel planes 311 respectively. The distance between the mutually parallel planes 311 is less than the width of the bearing clearance 410, and the width of the bearing clearance 410 is less than the diameter of the annular surface 312. For example, the spherical flat end 310 is a structure in which the two sides of the sphere are cut into planes 311. The two sides of the spherical flat end 310 are parallel planes 311, and the surfaces connected to the parallel planes 311 are annular surfaces 312. There are two tie rods 30, which are symmetrically distributed with the threaded hole 120 as the center. The distance between the parallel planes 311 of the spherical flat end 310 is 3-4 mm, which can enter the bearing clearance 410. The width of the bearing clearance 410 is about 5-6 mm. The diameter D of the annular surface 312 of the spherical flat end 310 is 6-7 mm, which is slightly larger than the diameter of the 6002 bearing ball 420, which is 5.56 mm. The diameter of the section of the tie rod 30 near the spherical flat end 310 is 5 mm. The distance between the parallel planes 311 and the diameter of the spherical flat end 310 can be set according to requirements. The distance between the parallel planes 311 is defined as the thickness T, and the diameter of the annular surface 312 of the spherical flat end 310 is called the diameter D. For bearing 6002 40, recommended parameters are: D ≈ 6.5mm, T ≈ 3.5mm, tie rod 30 shaft diameter 5mm, material 40Cr or SKD11, heat treatment HRC 45-50. The following are the thickness T and diameter D corresponding to different bearing models: 6001 bearing 40: ball diameter 4203.97mm, D=4.5mm, T=2.5mm; 6003 bearing 40: ball diameter 4206.35mm, D=7.5mm, T=4.0mm; 6004 bearing 40: ball diameter 4207.94mm, D=9.0mm, T=5.0mm.

[0023] Different operating procedures are used depending on the number of levers 30: When the tie rods 30 are set as two symmetrically distributed, the diameter D of the spherical flat end 310 is 6.5mm, the thickness T after flattening is 3.5mm, and the rod diameter is 5mm; the force-applying rod 211 is L-shaped, with a total length of 200mm and a knurled surface. Use a flathead screwdriver to pry open the rubber sealing covers on both sides of the bearing 40, use a small punch to punch open the cage rivets, remove the cage, and use a magnetic rod to remove four of the nine bearing balls 420 of the bearing 40, that is, take two balls in each symmetrical position. Insert the two tie rods 30 with the flat surface facing the raceway direction, and rotate them 90° respectively after insertion to confirm that the spherical flat end 310 has hooked the outer raceway. Pre-tighten the wrench to 5N·m, and use the force-applying rod 211 to continue rotating the screw 20, and continue to rotate 3-5 turns until the bearing 40 is completely disengaged from the housing hole, so that the bearing 40 can be completely removed without damage to the spindle.

[0024] When the tie rods 30 are set to three and evenly distributed at 120°, after removing the bearing seal cover and cage, take out six bearing balls 420, taking one ball at a time, leaving three positions for the spherical flat end 310 of the tie rods 30 to be inserted. After inserting the three tie rods 30 respectively, rotate them to hook the bearing 40, and apply a torque of 10-15 N·m to the screw 20. If the resistance is too high, WD-40 penetrating lubricating oil can be sprayed into the mating gap. Let it stand for 3 minutes and then continue. The advantage of applying force through the three tie rods 30 is that the axial force distribution is more uniform, reducing the risk of bearing 40 skewing.

[0025] like Figure 3 and Figure 7 As shown, in one embodiment, the pull rod 30 is a cylinder, including a fixed part 320 and a working part 330. The diameter of the fixed part 320 is smaller than the diameter of the working part 330 near the fixed part 320. The working part 330 includes several segments, and the diameter of each segment of the working part 330 increases sequentially from the spherical flat end 310 toward the fixed part 320. For example, by having the diameter of each segment of the working part 330 increase sequentially from the spherical flat end 310 toward the fixed part 320, with the diameter of the segment closer to the spherical flat end 310 being smaller, it is convenient for the working part 330 to insert the spherical flat end 310 into the bearing clearance 410, thereby pulling out the bearing 40. The contact between the spherical flat end 310 and the raceway is a line contact, with low contact stress and no damage to the raceway surface. Pulling out the bearing 40 by the spherical flat end 310 allows for complete and zero-damage disassembly of the bearing 40. The total weight of the three components, namely tie rod 30, screw 20 and force bar 211, is less than 300g. It can be used in different environments and is suitable for different models of mills and similar equipment that use 6000 series deep groove ball bearings 40.

[0026] like Figure 2 and Figure 6As shown, in one embodiment, a square drive head (not shown) is provided at the end of the screw 20 away from the workpiece spindle 50 for connecting a torque wrench or a ratchet wrench. For example, through the square drive head, the user can not only rotate the screw 20 by inserting the lever 211 into the operating hole 210, but also rotate the screw 20 by directly tightening the square drive head of the screw 20 with a wrench. The wrench can be L-shaped with a knurled surface, or it can be T-shaped. The wrench length is between 150-250mm, providing sufficient lever arm to facilitate rotating the screw 20 in multiple ways.

[0027] A method for disassembling a deep groove ball bearing includes the following steps: Step S1: Remove all or part of the bearing balls 420 from the bearing 40 to form a bearing clearance 410 between the inner and outer rings of the bearing 40. S2 inserts the ball-shaped flat end 310 into the bearing clearance 410 with the plane 311 facing the bearing clearance 410; S3 rotates the pull rod 30 around its own axis by a predetermined angle, so that the spherical flat end 310 changes from the plane 311 direction to the thickness direction and gets into the bearing clearance 410, thereby hooking the bearing 40. S4 Insert the force rod 211 into the operating hole 210, rotate the force rod 211 to make the end of the screw 20 away from the base plate 10 abut against the workpiece spindle 50 sleeved in the center of the bearing 40, and convert the rotational torque into a pulling force along the axial direction of the screw 20, and move the bearing 40 toward the base plate 10.

[0028] Specifically, in step S1, using a flathead screwdriver or a special tool, carefully pry open the rubber or metal sealing cap of the 6002 bearing 40. Then, using a small punch or needle-nose pliers, remove the rivets or claws of the bearing 40 cage one by one, and remove the cage from the bearing 40. The bearing balls 420 are exposed between the outer and inner rings. The space between the bearing balls 420 creates a channel for inserting the pull rod 30. Using a small magnetic rod or tweezers, remove the exposed bearing balls 420 one by one. The 6002 bearing 40 has nine balls with a diameter of 5.56 mm. After the bearing balls 420 are removed, an annular bearing clearance 410 of about 5-6 mm is formed between the inner and outer rings, providing space for the insertion of the spherical flat end 310 of the pull rod 30.

[0029] Specifically, in step S2, the spherical flat end 310 of the pull rod 30 is aligned with the bearing clearance 410 formed after the bearing balls 420 are removed, and inserted with the plane 311 facing inward. After the spherical flat end 310 is fully inserted into the inner side of the outer ring raceway, the pull rod 30 is rotated 90° so that the thick surface of the spherical flat end 310 hooks onto the outer ring raceway. A pull rod 30 is inserted at each of the two symmetrical bearing balls 420 positions, or at each of the three bearing balls 420 positions spaced 120° apart.

[0030] Specifically, in step S3, the pull rod 30 is rotated around its own axis by a predetermined angle, so that the spherical flat end 310 changes from the plane 311 direction to the thickness direction and gets into the bearing clearance 410, thereby allowing the spherical flat end 310 to hook onto the bearing 40.

[0031] Specifically, in step S4, the screw 20 is rotated using the force-applying rod 211. The lower end of the screw 20 abuts against the end face of the workpiece spindle 50, generating an axial thrust. Since the spherical flat end 310 has hooked onto the outer raceway of the bearing 40, the rotational motion of the screw 20 is converted into an axial pulling force, smoothly pulling the outer race of the bearing 40 out of the housing. Continue rotating until the bearing 40 is completely disengaged from the housing hole, and the bearing 40 can be removed. Specifically, the axial pulling force generated by the screw 20 is greater than the interference fit friction between the outer race of the bearing 40 and the housing. Taking an M10 screw and a torque of 15 N·m as an example: the axial pulling force F≈8000-12000N, and the interference fit friction between the outer race of the 6002 bearing 40 and the housing hole≈500-2000N.

[0032] The aforementioned deep groove ball bearing raceway hooking and disassembly device includes a base plate 10, a screw 20, and at least one pull rod 30. The base plate 10 is provided with a mounting groove 110 and a threaded hole 120. One end of the pull rod 30 is detachably mounted on the mounting groove 110. The end of the pull rod 30 away from the base plate 10 is provided with a spherical flat end 310 that inserts into the bearing clearance 410 and is rotated and locked within the bearing clearance 410. One end of the screw 20 passes through the threaded hole 120 and is threadedly connected to the base plate 10. The other end of the screw 20 abuts against the workpiece spindle 50. The end of the screw 20 away from the workpiece spindle 50 is provided with an operating hole 210. A force-applying rod 211 is detachably mounted on the operating hole 211. Applying force to the force-applying rod 211 drives the screw 20. When rotation occurs, the screw 20 drives the base plate 10 to pull the pull rod 30 away from the workpiece spindle 50. One end of the pull rod 30 is detachably mounted on the mounting groove 110, and the spherical flat end 310 of the other end of the pull rod 30 is inserted into the bearing clearance 410. The spherical flat end 310 is locked in the bearing clearance 410 by rotation. One end of the screw 20 abuts against the workpiece spindle 50 fixed by the bearing 40. Then, the screw 20 is rotated by the force rod 211. The screw 20 cannot move in the axial direction. The reverse torque drives the base plate 10 to move in the opposite direction. In turn, the base plate 10 drives the spherical flat end 310 to hook the bearing 40 and move it away from the workpiece spindle 50, thereby pulling out the bearing 40.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A deep groove ball bearing raceway hook disassembly device, characterized in that, The device includes a base plate, a screw, and at least one pull rod. The base plate has a mounting groove and a threaded hole. One end of the pull rod is detachably mounted in the mounting groove. The end of the pull rod away from the base plate has a spherical flat end that inserts into the bearing clearance and is locked in the bearing clearance by rotation. One end of the screw passes through the threaded hole and is threadedly connected to the base plate. The other end of the screw abuts against the workpiece spindle. The end of the screw away from the workpiece spindle has an operating hole. A force-applying rod is detachably mounted in the operating hole. Applying force to the force-applying rod causes the screw to rotate. The rotation of the screw causes the base plate to pull the pull rod away from the workpiece spindle.

2. The deep groove ball bearing raceway hooking and disassembly device according to claim 1, characterized in that, The threaded hole is located at the center of the substrate.

3. The deep groove ball bearing raceway hooking and disassembly device according to claim 1, characterized in that, The mounting groove is elongated, and the pull rod moves back and forth within the mounting groove.

4. The deep groove ball bearing raceway hooking and disassembly device according to claim 3, characterized in that, The mounting slots are provided in a plurality of manner, and the plurality of mounting slots are evenly arranged around the base plate. The tie rods are provided in a plurality of manner, and each tie rod is provided in a corresponding mounting slot.

5. The deep groove ball bearing raceway hooking and disassembly device according to claim 4, characterized in that, The end of the pull rod away from the spherical flat end is provided with an external thread, and a fastener is provided on the external thread. The external thread and the fastener cooperate to fix the pull rod in the mounting groove.

6. The deep groove ball bearing raceway hooking and disassembly device according to claim 1, characterized in that, The spherical flat end is provided with a pair of parallel planes and an annular surface that connects to the two parallel planes respectively. The distance between the parallel planes is less than the width of the bearing clearance, and the width of the bearing clearance is less than the diameter of the annular surface.

7. The deep groove ball bearing raceway hooking and disassembly device according to claim 1, characterized in that, The pull rod is a cylinder, and the pull rod includes a fixed part and a working part. The diameter of the fixed part is smaller than the diameter of the working part near the fixed part. The working part includes several segments, and the diameter of each segment of the working part increases sequentially from the spherical flat end toward the fixed part.

8. The deep groove ball bearing raceway hooking and disassembly device according to claim 1, characterized in that, The screw is provided with a square drive head at the end away from the main shaft of the workpiece, which is used to connect a torque wrench or a ratchet wrench.

9. A method for disassembling a deep groove ball bearing, comprising using the deep groove ball bearing raceway hook disassembly device as described in any one of claims 1 to 8 to disassemble the deep groove ball bearing inside the counterbore of the housing, characterized in that, Includes the following steps: S1 Removes all or part of the bearing balls from the bearing to form the bearing clearance between the inner and outer rings of the bearing; S2 Insert the spherical flat end into the bearing clearance with the plane facing the bearing clearance; S3 rotates the pull rod around its own axis by a predetermined angle, so that the spherical flat end changes from the planar direction to the thickness direction and gets into the bearing clearance, thereby hooking the bearing; S4 Insert the force-applying rod into the operating hole, rotate the force-applying rod to make the end of the screw away from the base plate abut against the workpiece spindle sleeved in the center of the bearing, and convert the rotational torque into a pulling force along the axial direction of the screw, so as to move the bearing toward the base plate and pull it out.

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