A composite double bearing and its assembly process

Abstract

The present application relates to a combined double-bearing structure, which includes a first bearing ring, a second bearing ring, a main shaft, a first ball, a second ball, a first cage and a second cage. A first limiting groove is formed on the inner side wall of the first bearing ring, a first groove channel is formed on the outer side wall of the second bearing ring, a second limiting groove is formed on the inner side wall of the second bearing ring, and a second groove channel is formed on the main shaft; the first ball is limited between the first bearing ring and the second bearing ring through the two first cages, the first limiting groove and the first groove channel; the second ball is limited between the second bearing ring and the main shaft through the two second cages, the second limiting groove and the second groove channel. The present application has the effect of a wide range of applications.

Description

Technical Field

[0001] The present application relates to the technical field of bearings, and in particular, to a composite double bearing and its assembly process. Background Art

[0002] A bearing is an important component in modern mechanical equipment. Its main function is to support a mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotational accuracy.

[0003] Currently, a bearing structure includes a rotating shaft, an inner ring, an outer ring, rolling balls, and a cage. The inner ring is located inside the outer ring. A groove is provided on the outer sidewall of the inner ring, and a limiting groove is provided on the inner sidewall of the outer ring; one end of the rolling ball is located in the limiting groove and the other end is located in the groove; there are two cages, the two cages are riveted together, and the rolling balls are located between the two cages; the rotating shaft is clamped on the inner ring.

[0004] Since the rotating shaft is clamped to the inner ring, the rotating shaft and the inner ring will move synchronously, and the rotating shaft cannot rotate relative to the inner ring; thus, the scope of application is relatively low. Summary of the Invention

[0005] In order to improve the scope of application, the present application provides a composite double bearing and its assembly process.

[0006] In a first aspect, a composite double bearing provided by the present application adopts the following technical solution:

[0007] A composite double bearing includes a first bearing ring, a second bearing ring, a main shaft, a first rolling ball, a second rolling ball, a first cage, and a second cage. A first limiting groove is provided on the inner sidewall of the first bearing ring, a first groove is provided on the outer sidewall of the second bearing ring, a second limiting groove is provided on the inner sidewall of the second bearing ring, and a second groove is provided on the main shaft; the first rolling ball is limited between the first bearing ring and the second bearing ring by the two first cages, the first limiting groove, and the first groove; the second rolling ball is limited between the second bearing ring and the main shaft by the two second cages, the second limiting groove, and the second groove.

[0008] By adopting the above technical solution, the main shaft can rotate relative to the second bearing ring, and the object connected to the main shaft will rotate; the second bearing ring can rotate relative to the first bearing ring and the main shaft, and the object connected to the second bearing ring will rotate; thus, the scope of application can be improved.

[0009] Optionally, the first bearing ring is shorter than the second bearing ring, and the second bearing ring is shorter than the main shaft.

[0010] By adopting the above technical solution, the first bearing ring is shorter than the second bearing ring, which facilitates connecting other rotating objects to the second bearing ring; the second bearing ring is shorter than the main shaft, which facilitates connecting other rotating objects to the main shaft.

[0011] Optionally, it further includes a first gasket and a second gasket. The outer sidewall of the first gasket abuts against the inner sidewall of the first bearing ring, and the inner sidewall of the first gasket abuts against the outer sidewall of the second bearing ring; the outer sidewall of the second gasket abuts against the inner sidewall of the second bearing ring, and the inner sidewall of the second gasket abuts against the outer sidewall of the main shaft.

[0012] By adopting the above technical solution, the provided first gasket can block impurities and reduce the entry of impurities between the first bearing ring and the second bearing ring; the provided second gasket can block impurities and reduce the entry of impurities between the second bearing ring and the main shaft.

[0013] In a second aspect, an assembly process for a composite double bearing provided by the present application adopts the following technical solution:

[0014] An assembly process includes the following steps: S1: First, place the first bearing ring and the second bearing ring on the first assembly device, then install the first balls between the first bearing ring and the second bearing ring; then install two first cages between the first bearing ring and the second bearing ring to form a first product; S2: Then place the first product and the main shaft on the second assembly device, then install the second balls between the second bearing ring and the main shaft; then install two second cages between the second bearing ring and the main shaft to form the final product.

[0015] By adopting the above technical solution, first place the first bearing ring and the second bearing ring on the first assembly device. The first assembly device can adjust the position of the first bearing ring relative to the second bearing ring to facilitate the installation of the first balls between the first bearing ring and the second bearing ring; then install two first cages between the first bearing ring and the second bearing ring to form a first product; then place the first product and the main shaft on the second assembly device. The second assembly device can adjust the position of the first product relative to the main shaft to facilitate the installation of the second balls between the second bearing ring of the first product and the main shaft; then install two second cages between the second bearing ring and the main shaft to form the final product; the provided first assembly device and second assembly device can reduce the manual adjustment time.

[0016] Optionally, the first assembly device includes a processing table, an adjustment rod, an adjustment block, a first clamping block, a first adjustment assembly, and a second adjustment assembly. A placement groove is formed in the processing table, and the second bearing ring is located in the placement groove. The first bearing ring is placed on the processing table, and the second bearing ring is located within the first bearing ring. The adjustment rod is slidably disposed on the processing table, and the first adjustment assembly is disposed on the processing table and connected to the adjustment rod. The adjustment block is disposed on the adjustment rod, and a first sliding groove is formed in the adjustment block. The first clamping blocks are slidably disposed at both ends of the first sliding groove, and the two first clamping blocks are respectively located on both sides of the first bearing ring. The second adjustment assembly is disposed on the adjustment block, and both of the first clamping blocks are connected to the second adjustment assembly.

[0017] By adopting the above technical solution, first place the second bearing ring into the placement groove, then place the first bearing ring around the second bearing ring, and make the first bearing ring located between the two first clamping blocks. Start the second adjustment assembly, and the second adjustment assembly drives the two first clamping blocks to move, so that the two first clamping blocks both abut against the first bearing ring. Then start the first adjustment assembly, and the first adjustment assembly drives the adjustment rod to move. The adjustment block on the adjustment rod will drive the two first clamping blocks to move, and the two first clamping blocks will drive the first bearing ring to move, so that one end of the first bearing ring away from the adjustment block abuts against the second bearing ring. Then place the first ball between the first bearing ring and the second bearing ring. Then start the first adjustment assembly again, so that the two first clamping blocks drive the first bearing ring to move, and make the axes of the bearing of the first bearing ring and the second bearing ring coincide. Then adjust the position of the first ball located between the first bearing ring and the second bearing ring, and then use one of the first cages to abut against the first ball with a determined position. Then start the second adjustment assembly again, so that the two first clamping blocks move away from each other. Then move the first bearing ring with one first cage and the second bearing ring together in a direction away from the processing table, take out the second bearing ring from the placement groove, and finally install the other first cage and rivet the two first cages to fix the position of the first ball, thereby forming the first product.

[0018] Optionally, a moving and lifting mechanism is provided on the processing table. The moving and lifting mechanism includes a first cylinder, a second cylinder, a moving block, a lifting block, a second clamping block, and a first adjusting component. The cylinder block of the first cylinder is provided on the processing table, and the moving block is provided on the piston rod of the first cylinder; the cylinder block of the second cylinder is provided on the moving block, the lifting block is provided on the piston rod of the second cylinder, and the adjusting rod is slidably provided on the lifting block. The first adjusting component is provided on the lifting block; each of the first clamping blocks is slidably provided with the second clamping block, and the two second clamping blocks are both abutted against the second bearing ring; the first adjusting component is provided on the first clamping block and is connected to the second clamping block.

[0019] By adopting the above technical solution, when a first cage abuts against the first balls in the first bearing ring and the second bearing ring, first start the first adjusting component. The first adjusting component drives the second clamping block to move in the direction close to the second bearing ring, so that the second clamping block abuts against the second bearing ring, and the two second clamping blocks will clamp the second bearing ring; start the second cylinder, the piston rod of the second cylinder drives the lifting block to move, the lifting block drives the adjusting block to move, the two first clamping blocks located on the adjusting block will drive the first bearing ring to move, and the second clamping blocks located on the two first clamping blocks will drive the second bearing ring to move, so that the first bearing ring and the second bearing ring move synchronously in the direction away from the processing table; then install another first cage between the first bearing ring and the second bearing ring, connect the two first cages, and enable the two first cages to limit the positions of the first balls.

[0020] Optionally, a stable rotation mechanism is provided on the lifting block. The stable rotation mechanism includes a rotating block, a stabilizing block, a second adjusting component, and a third adjusting component. The rotating block is rotatably provided on the lifting block, and the adjusting rod is slidably provided on the rotating block. The first adjusting component is provided on the rotating block; the stabilizing block is slidably provided on the second clamping block, and the stabilizing block abuts against the first cage away from the processing table; the second adjusting component is provided on the lifting block and is connected to the rotating block; the third adjusting component is provided on the second clamping block and is connected to the stabilizing block.

[0021] By adopting the above technical solution, when the second clamping block abuts against the second bearing ring, the third adjustment assembly is started. The third adjustment assembly drives the stabilizing block to move, so that the stabilizing block presses tightly against the first cage, so that the first cage, the first bearing ring and the second bearing ring move synchronously; when the second bearing ring is separated from the placement groove, the second adjustment assembly is started, and the second adjustment assembly drives the adjustment block to rotate; the first bearing ring, the second bearing ring and the first cage will rotate, so that one end of the first bearing ring and the second bearing ring without the first cage installed rotates to the end away from the processing table, and then another first cage is installed between the first bearing ring and the second bearing ring, which is convenient for realizing the connection of the two first retainers.

[0022] Optionally, a rotating mechanism is arranged on the moving block. The rotating mechanism includes a first motor, a support block, a rotating shaft and a rotating block. Two support blocks are arranged on the moving block; both ends of the rotating shaft are rotatably connected to the two support blocks respectively; the first motor is arranged on one of the support blocks and the output shaft is connected to one end of the rotating shaft; the rotating block is arranged on the rotating shaft, and the cylinder block of the second cylinder is arranged on the rotating block.

[0023] By adopting the above technical solution, the output shaft of the first motor drives the rotating shaft to rotate, the rotating block on the rotating shaft rotates, the rotating block will rotate the second cylinder, the position of the lifting block is changed by the second cylinder, and the lifting block will drive the adjustment block to rotate, so that the first bearing ring and the second bearing ring are changed from a vertical state to a horizontal state, thus facilitating the installation of the second first cage.

[0024] Optionally, the second assembly device has the same structure as the first assembly device, and the main shaft is located in the placement groove of the second assembly device. The two first clamping blocks in the second assembly device clamp the first bearing ring in the first product.

[0025] By adopting the above technical solution, the main shaft is placed in the placement groove of the second assembly device; the two first clamping blocks in the second assembly device clamp the first bearing ring in the first product, and the two first clamping blocks in the second assembly device will drive the first product to move, so that the second ball is conveniently placed between the second bearing ring of the first product and the main shaft.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The composite double bearing provided in the present application can improve the scope of application;

[0028] 2. The first assembly device provided can facilitate the installation of the first ball between the first bearing ring and the second bearing ring. Description of the Drawings

[0029] Figure 1 It is a schematic structural diagram of the composite double bearing in the embodiment of the present application;

[0030] Figure 2 It is a schematic structural diagram of the first assembly device in the embodiment of the present application;

[0031] Figure 3 It is a schematic structural diagram of the rotating mechanism in the embodiment of the present application;

[0032] Figure 4 It is a schematic structural diagram of the second adjustment component in the embodiment of the present application;

[0033] Figure 5 It is a schematic structural diagram of the third adjustment component in the embodiment of the present application.

[0034] Reference numerals: 11, first bearing ring; 111, first limiting groove; 12, second bearing ring; 121, first raceway groove; 13, main shaft; 131, second raceway groove; 14, first ball; 15, second ball; 16, first cage; 17, second cage; 2, first assembly device; 21, processing table; 22, adjustment rod; 23, adjustment block; 231, first sliding groove; 24, first clamping block; 25, first adjustment component; 251, first rack; 252, third motor; 253, third gear; 26, second adjustment component; 261, fourth motor; 262, bidirectional screw; 27, connecting rod; 3, moving and lifting mechanism; 31, first cylinder; 32, second cylinder; 33, moving block; 34, lifting block; 35, second clamping block; 351, fourth sliding groove; 36, first adjustment component; 361, fifth motor; 362, fourth gear; 363, second rack; 37, adjustment rod; 4, stable rotation mechanism; 41, rotating block; 42, stable block; 43, second adjustment component; 431, first gear; 432, second gear; 433, second motor; 44, third adjustment component; 441, sixth motor; 442, moving screw; 45, slider; 5, rotating mechanism; 51, first motor; 52, support block; 53, rotating shaft; 54, rotating block. Detailed implementation manners

[0035] The following further Figures 1-5 describes the present application in detail with reference to the

[0036] The embodiment of the present application discloses a composite double bearing.

[0037] Refer to Figure 1, A compound double bearing includes a first bearing ring 11, and a first limiting groove 111 is formed on the inner side wall of the first bearing ring 11; a second bearing ring 12 is arranged inside the first bearing ring 11, the second bearing ring 12 is longer than the first bearing ring 11, and a first groove 121 is formed on the outer side wall of the first bearing ring 11; a first ball 14 is placed between the first bearing ring 11 and the second bearing ring 12, one end of the first ball 14 is located in the first limiting groove 111 and the other end is located in the first groove 121; two first cages 16 are arranged between the first bearing ring 11 and the second bearing ring 12, the two first cages 16 are respectively located on both sides of the first ball 14, and the position of the first ball 14 is fixed by the two first cages 16.

[0038] A first gasket that abuts against the first cage 16 is arranged between the first bearing ring 11 and the second bearing ring 12, the outer side wall of the first gasket abuts against the inner side wall of the first bearing ring 11, and the inner side wall of the first gasket abuts against the outer side wall of the second bearing ring 12; there are two first gaskets, and the two first gaskets respectively abut against the two first cages 16.

[0039] A second limiting groove is formed on the inner side wall of the second bearing ring 12; a main shaft 13 is arranged inside the second bearing ring 12, the main shaft 13 is longer than the second bearing ring 12, and a second groove 131 is formed on the outer side wall of the main shaft 13; a second ball 15 is placed between the second bearing ring 12 and the main shaft 13, one end of the second ball 15 is located in the second limiting groove and the other end is located in the second groove 131; two second cages 17 are arranged between the second bearing ring 12 and the main shaft 13, the two second cages 17 are respectively located on both sides of the second ball 15, and the position of the second ball 15 is fixed by the two second cages 17.

[0040] A second gasket that abuts against the second cage 17 is arranged between the second bearing ring 12 and the main shaft 13, the outer side wall of the second gasket abuts against the inner side wall of the second bearing ring 12, and the inner side wall of the second gasket abuts against the outer side wall of the main shaft 13; there are two second gaskets, and the two second gaskets respectively abut against the two second cages 17.

[0041] The embodiment of the present application discloses an assembly process of a compound double bearing.

[0042] Reference Figure 2 , An assembly process of a compound double bearing includes the following steps: S1: First, place the first bearing ring 11 and the second bearing ring 12 on the first assembly device 2, and then install the first ball 14 between the first bearing ring 11 and the second bearing ring 12; then install the two first cages 16 between the first bearing ring 11 and the second bearing ring 12 to form a first product;

[0043] S2: Then place the first product and the main shaft 13 on the second assembly device. Next, install the second ball 15 between the second bearing ring 12 of the first product and the main shaft 13. Then install two second cages 17 between the second bearing ring 12 and the main shaft 13 to form the final product.

[0044] Reference Figure 2 and Figure 3 , the first assembly device 2 includes a processing table 21. A placement groove is provided on the processing table 21, and one end of the second bearing ring 12 is placed in the placement groove. The first bearing ring 11 is placed on the processing table 21, and the second bearing ring 12 is located inside the first bearing ring 11.

[0045] A moving and lifting mechanism 3 is provided on the processing table 21. The moving assembly includes a first cylinder 31. The cylinder body of the first cylinder 31 is fixedly connected to the processing table 21, and a moving block 33 is connected to the piston rod of the first cylinder 31.

[0046] Start the first cylinder 31, and the piston rod of the first cylinder 31 drives the moving block 33 to slide on the processing table 21.

[0047] Reference Figure 3 , a rotating mechanism 5 is provided on the moving block 33. The rotating mechanism 5 includes two support blocks 52 integrally provided on the moving block 33. A rotating shaft 53 is provided between the two support blocks 52. The two ends of the rotating shaft 53 are respectively rotatably connected to the two support blocks 52. A rotating block 54 is fixedly connected to the rotating shaft 53. A first motor 51 is fixedly connected to one of the support blocks 52, and the output shaft of the first motor 51 is connected to one end of the rotating shaft 53.

[0048] Start the first motor 51, and the output shaft of the first motor 51 drives the rotating shaft 53 to rotate, and the rotating shaft 53 will drive the rotating block 54 to rotate.

[0049] Reference Figure 3 , a second cylinder 32 is provided on the rotating block 54. The cylinder body of the second cylinder 32 is fixedly connected to the rotating block 54, and a lifting block 34 is connected to the piston rod of the second cylinder 32.

[0050] Start the second cylinder 32, and the piston rod of the second cylinder 32 drives the lifting block 34 to move.

[0051] Reference Figure 3 , a stable rotation mechanism 4 is provided on the lifting block 34. The stable rotation mechanism 4 includes a rotating block 41 rotatably connected to the lifting block 34, and the rotating block 41 is cylindrical. A second adjustment component 43 is provided on the lifting block 34. The second adjustment component 43 includes a second motor 433 fixedly connected to the lifting block 34. A first gear 431 is key-connected to the output shaft of the second motor 433. A second gear 432 meshing with the first gear 431 is key-connected to the rotating block 41.

[0052] Start the second motor 433. The output shaft of the second motor 433 drives the first gear 431 to rotate. The first gear 431 drives the second gear 432 to rotate, and the second gear 432 will drive the rotating block 41 to rotate.

[0053] Reference Figure 3 , two second chutes are opened on the side wall of the rotating block 41, and an adjusting rod 22 is slidably connected in each second chute. A first adjusting assembly 25 is arranged on the rotating block 41. The first adjusting assembly 25 includes a third motor 252 fixedly connected to the rotating block 41. A third gear 253 is key-connected to the output shaft of the third motor 252; a first rack 251 meshing with the third gear 253 is fixedly connected to one of the adjusting rods 22.

[0054] Start the third motor 252. The output shaft of the third motor 252 drives the third gear 253 to rotate. The third gear 253 drives the first rack 251 to move, and the first rack 251 will drive the adjusting rod 22 to move.

[0055] Reference Figure 3 and Figure 4 , an adjusting block 23 is arranged at one end of the adjusting rod 22 away from the rotating block 41. Both adjusting rods 22 are fixedly connected to the adjusting block 23. A first chute 231 is opened on one side of the adjusting block 23 away from the rotating block 41. Two connecting rods 27 are slidably connected in the first chute 231. A first clamping block 24 is fixedly connected to one end of each connecting rod 27 away from the adjusting block 23. The first bearing ring 11 is located between the two first clamping blocks 24, and both first clamping blocks 24 abut against the first bearing ring 11. A second adjusting assembly 26 is arranged on the adjusting block 23. The second adjusting assembly 26 includes a bidirectional screw 262 rotatably connected in the first chute 231. The bidirectional screw 262 passes through the two connecting rods 27, and the two connecting rods 27 are respectively threadedly connected to both ends of the bidirectional screw 262; a fourth motor 261 is fixedly connected to the adjusting block 23, and the output shaft of the fourth motor 261 is connected to one end of the bidirectional screw 262.

[0056] Start the fourth motor 261. The output shaft of the fourth motor 261 drives the bidirectional screw 262 to rotate. The bidirectional screw 262 drives the two connecting rods 27 to move towards each other. The two connecting rods 27 drive the two first clamping blocks 24 to move towards each other, so that both first clamping blocks 24 abut against the first bearing ring 11.

[0057] Reference Figure 4, a third sliding groove is formed in each first clamping block 24, an adjusting rod 37 is slidably connected in the third sliding groove, and a second clamping block 35 is fixedly connected to one end of the adjusting rod 37 away from the first clamping block 24. A first adjusting assembly 36 is arranged on the first clamping block 24. The first adjusting assembly 36 includes a fifth motor 361 fixedly connected to the first clamping block 24, and a fourth gear 362 is key-connected to the output shaft of the fifth motor 361; a second rack 363 meshing with the fourth gear 362 is fixedly connected to the adjusting rod 37.

[0058] Start the fifth motor 361. The output shaft of the fifth motor 361 drives the fourth gear 362 to rotate. The fourth gear 362 drives the second rack 363 to move. The second rack 363 will drive the adjusting rod 37 to slide in the third sliding groove. The adjusting rod 37 drives the second clamping block 35 to move, so that the two second clamping blocks 35 on the two first clamping blocks 24 both abut against the second bearing ring 12 in the placement groove.

[0059] Reference Figure 2 、 Figure 4 and Figure 5 , a fourth sliding groove 351 is formed in each second clamping block 35, a slider 45 is slidably connected in the fourth sliding groove 351, a stabilizing block 42 is fixedly connected to the slider 45, and the stabilizing block 42 can abut against the first cage 16 in the first bearing ring 11 and the second bearing ring 12. A third adjusting assembly 44 is arranged on the second clamping block 35. The third adjusting assembly 44 includes a moving screw 442 rotatably connected in the fourth sliding groove 351. The moving screw 442 passes through the slider 45 and is threadedly connected to the slider 45; a sixth motor 441 is fixedly connected to the second clamping block 35, and the output shaft of the sixth motor 441 is connected to one end of the moving screw 442.

[0060] When the second clamping block 35 abuts against the second bearing ring 12, start the sixth motor 441. The output shaft of the sixth motor 441 drives the moving screw 442 to rotate. The moving screw 442 drives the slider 45 to slide in the fourth sliding groove 351, and the slider 45 drives the stabilizing block 42 to move.

[0061] The second assembling device has the same structure as the first assembling device 2, and the main shaft 13 is located in the placement groove of the second assembling device; the two first clamping blocks 24 in the second assembling device clamp the first bearing ring 11 in the first product, the two second clamping blocks 35 in the second assembling device clamp the main shaft 13, and the stabilizing block 42 in the second assembling device abuts against the second cage 17.

[0062] The implementation principle of the assembly process of a composite double bearing in an embodiment of this application is as follows: First, place the second bearing ring 12 in the placement groove, and then sleevethe first bearing ring 11 on the second bearing ring 12, and the first bearing ring 11 abuts against the processing table 21. At this time, the first bearing ring 11 is located between the two first clamping blocks 24.

[0063] Start the fourth motor 261, the bidirectional screw 262 drives the two connecting rods 27 to move towards each other, and the first clamping blocks 24 on the two connecting rods 27 both abut against the outer side wall of the first bearing ring 11, so that the two first clamping blocks 24 clamp the first bearing ring 11. Then start the third motor 252, so that the adjusting rod 22 drives the adjusting block 23 to move away from the second bearing ring 12, and the two first clamping blocks 24 will drive the first bearing ring 11 to move, so that the end of the first bearing ring 11 away from the adjusting block 23 abuts against the second bearing ring 12; then place the first ball 14 between the first bearing ring 11 and the second bearing ring 12; then start the third motor 252 again, the two first clamping blocks 24 drive the first bearing ring 11 to move, so that the axis of the first bearing ring 11 coincides with the axis of the second bearing ring 12. At this time, one end of the first ball 14 is located in the first limiting groove 111 of the first bearing ring 11 and the other end is located in the first groove 121 of the second bearing ring 12, and then adjust the position of the first ball 14 in the first bearing ring 11 and the second bearing ring 12.

[0064] Then place a first cage 16 between the first bearing ring 11 and the second bearing ring 12, and this first cage 16 is located at the end of the first bearing ring 11 and the second bearing ring 12 away from the processing table 21.

[0065] Next, start the fifth motor 361, so that the second clamping block 35 on the first clamping block 24 abuts against the second bearing ring 12, and the two second clamping blocks 35 on the two first clamping blocks 24 will clamp the second bearing ring 12. Then start the sixth motor 441, so that the stabilizing block 42 moves between the first bearing ring 11 and the second bearing ring 12, and the stabilizing block 42 abuts against the first cage 16 located in the first bearing ring 11 and the second bearing ring 12.

[0066] Then, the second cylinder 32 is started. The piston rod of the second cylinder 32 drives the lifting block 34 to move away from the processing table 21. The rotating block 41 on the lifting block 34 drives the adjusting rod 22 to move. The adjusting rod 22 drives the adjusting block 23 to move. The connecting rod 27 on the adjusting block 23 drives the first clamping block 24 to move away from the processing table 21. The second clamping block 35 on the first clamping block 24 drives the second bearing ring 12 to move away from the processing table 21. The second clamping block 35 is synchronized with the first clamping block 24, so that the first bearing ring 11 and the second bearing ring 12 move synchronously. Since the stabilizing block 42 on the second clamping block 35 abuts against the first cage 16, and the first bearing ring 11 and the second bearing ring 12 move synchronously, when the first bearing ring 11 and the second bearing ring 12 move, the first cage 16 will move synchronously with the second bearing ring 12, and the first cage 16 always maintains the state of restricting the first balls 14.

[0067] Then, the second motor 433 is started to rotate the rotating block 41. The adjusting rod 22 on the rotating block 41 will drive the adjusting block 23 to rotate. The connecting rod 27 on the adjusting block 23 drives the first clamping block 24 to rotate. The second clamping block 35 on the first clamping block 24 rotates; realizing the rotation of the first bearing ring 11, the second bearing ring 12 and the first cage 16, so that the end of the first bearing ring 11 and the second bearing ring 12 where the first cage 16 is not installed rotates to the end away from the processing table 21, and then another first cage 16 is installed between the first bearing ring 11 and the second bearing ring 12, and then the two first cages 16 are riveted to form the first product.

[0068] Then, the first cylinder 31 is started. The piston rod of the first cylinder 31 drives the first product to move to one end of the processing table 21, and then the operator transfers the first product out of the processing table 21.

[0069] Then, the first product is connected to the main shaft 13. The main shaft 13 is placed on the processing table 21 of the second assembly device. Then, the first product is sleeved on the main shaft 13. Then, the two first clamping blocks 24 in the second assembly device are used to clamp the first bearing ring 11 in the first product. The second balls 15 are installed between the second bearing ring 12 and the main shaft 13 in the first product, and the installation process of the second balls 15 is the same as that of the first balls 14; then, two second cages 17 are installed, and the installation process of the second cages 17 is the same as that of the first cages 16, and finally the final product is formed.

[0070] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An assembly process of a composite double bearing, characterized in that, The composite double bearing includes a first bearing ring (11), a second bearing ring (12), a main shaft (13), a first ball (14), a second ball (15), a first cage (16) and a second cage (17). A first limiting groove (111) is formed on the inner side wall of the first bearing ring (11), a first groove channel (121) is formed on the outer side wall of the second bearing ring (12), a second limiting groove is formed on the inner side wall of the second bearing ring (12), and a second groove channel (131) is formed on the main shaft (13). The first ball (14) is defined between the first bearing ring (11) and the second bearing ring (12) by the two first cages (16), the first limiting groove (111) and the first groove channel (121). The second ball (15) is defined between the second bearing ring (12) and the main shaft (13) by the two second cages (17), the second limiting groove and the second groove channel (131). The assembly process includes the following steps: S1: First, place the first bearing ring (11) and the second bearing ring (12) on the first assembly device (2), then install the first ball (14) between the first bearing ring (11) and the second bearing ring (12); then install the two first cages (16) between the first bearing ring (11) and the second bearing to form a first product. S2: Then place the first product and the main shaft (13) on the second assembly device, then install the second ball (15) between the second bearing ring (12) of the first product and the main shaft (13); then install the two second cages (17) between the second bearing ring (12) and the main shaft (13) to form the final product. The first assembly device (2) includes a processing table (21), an adjusting rod (22), an adjusting block (23), a first clamping block (24), a first adjusting assembly (25) and a second adjusting assembly (26). A placement groove is formed on the processing table (21), the second bearing ring (12) is located in the placement groove, the first bearing ring (11) is placed on the processing table (21), and the second bearing ring (12) is located inside the first bearing ring (11). The adjusting rod (22) is slidably arranged on the processing table (21), and the first adjusting assembly (25) is arranged on the processing table (21) and connected to the adjusting rod (22). The adjusting block (23) is arranged on the adjusting rod (22), a first sliding groove (231) is formed on the adjusting block (23), and the two ends of the first sliding groove (231) are both slidably provided with the first clamping block (24), and the two first clamping blocks (24) are respectively located on both sides of the first bearing ring (11). The second adjusting assembly (26) is arranged on the adjusting block (23), and the two first clamping blocks (24) are both connected to the second adjusting assembly (26). A moving and lifting mechanism (3) is arranged on the processing table (21). The moving and lifting mechanism (3) includes a first air cylinder (31), a second air cylinder (32), a moving block (33), a lifting block (34), a second clamping block (35) and a first adjusting component (36). The cylinder block of the first air cylinder (31) is arranged on the processing table (21), and the moving block (33) is arranged on the piston rod of the first air cylinder (31). The cylinder block of the second air cylinder (32) is arranged on the moving block (33), the lifting block (34) is arranged on the piston rod of the second air cylinder (32), and the adjusting rod (22) is slidably arranged on the lifting block (34). The first adjusting component (25) is arranged on the lifting block (34). Each of the first clamping blocks (24) is slidably provided with the second clamping block (35), and the two second clamping blocks (35) are both abutted against the second bearing ring (12). The first adjusting component (36) is arranged on the first clamping block (24) and is connected to the second clamping block (35).

2. The assembly process of a composite double bearing according to claim 1, characterized in that, The first bearing ring (11) is shorter than the second bearing ring (12), and the second bearing ring (12) is shorter than the main shaft (13).

3. The assembly process of a composite double bearing according to claim 1, characterized in that, The composite double bearing further includes a first sealing gasket and a second sealing gasket. The outer side wall of the first sealing gasket abuts against the inner side wall of the first bearing ring (11), and the inner side wall of the first sealing gasket abuts against the outer side wall of the second bearing ring (12). The outer side wall of the second sealing gasket abuts against the inner side wall of the second bearing ring (12), and the inner side wall of the second sealing gasket abuts against the outer side wall of the main shaft (13).

4. The assembly process of a composite double bearing according to claim 1, characterized in that, A stable rotation mechanism (4) is arranged on the lifting block (34). The stable rotation mechanism (4) includes a rotating block (41), a stabilizing block (42), a second adjusting component (43) and a third adjusting component (44). The rotating block (41) is rotatably arranged on the lifting block (34), and the adjusting rod (22) is slidably arranged on the rotating block (41). The first adjusting component (25) is arranged on the rotating block (41). The stabilizing block (42) is slidably arranged on the second clamping block (35), and the stabilizing block (42) abuts against the first cage (16) away from the processing table (21). The second adjusting component (43) is arranged on the lifting block (34) and is connected to the rotating block (41). The third adjusting component (44) is arranged on the second clamping block (35) and is connected to the stabilizing block (42).

5. The assembly process of a composite double-bearing according to claim 1, characterized in that, A rotating mechanism (5) is arranged on the moving block (33). The rotating mechanism (5) includes a first motor (51), a support block (52), a rotating shaft (53) and a rotating block (54). Two support blocks (52) are arranged on the moving block (33). Both ends of the rotating shaft (53) are respectively rotatably connected to the two support blocks (52). The first motor (51) is arranged on one of the support blocks (52), and the output shaft is connected to one end of the rotating shaft (53). The rotating block (54) is arranged on the rotating shaft (53), and the cylinder block of the second cylinder (32) is arranged on the rotating block (54).

6. The assembly process of a composite double bearing according to claim 1, characterized in that The second assembly device has the same structure as the first assembly device (2). The main shaft (13) is located in the placement groove of the second assembly device. Two of the first clamping blocks (24) in the second assembly device clamp the first bearing ring (11) in the first product.

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