A bearing ring sorting device
By designing a bearing ring sorting and matching device, and utilizing a detection mechanism, a gas expansion chamber, and a pressure sensor to achieve automatic matching of inner and outer rings, the problem of inaccurate ring matching in existing technologies is solved, thereby improving the assembly quality and production efficiency of bearings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG JINGLI BEARING TECH CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-04-24
AI Technical Summary
Existing technologies make it difficult to achieve rapid and accurate matching of inner and outer rings, resulting in insufficient bearing precision and affecting production efficiency and quality.
A bearing ring sorting and matching device was designed, including a sorting mechanism, an outer ring and inner ring unloading mechanism, and an outer ring and inner ring detection mechanism. The device automatically finds the corresponding ring model through detection and matching algorithms, and uses a gas expansion chamber and pressure sensor for precise sorting.
This enables rapid and precise matching of the inner and outer rings, improving the assembly quality and production efficiency of the bearings, and ensuring the bearings' precision and service life.
Smart Images

Figure CN120244503B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to bearing ring pairing, and more specifically to a bearing ring sorting and pairing device. Background Technology
[0002] As a key component in mechanical transmission systems, bearings' precision and performance directly affect the operating efficiency and service life of equipment. Bearings typically consist of an inner ring, an outer ring, rolling elements such as balls or rollers, and a cage. The dimensional matching and geometric accuracy of the inner and outer rings are crucial to the assembly quality of the bearing. During bearing manufacturing, the inner and outer rings are usually machined separately. However, due to machining errors, heat treatment deformation, and other factors, even inner and outer rings produced in the same batch may have slight differences in actual size and shape. Random pairing and assembly can lead to uneven bearing clearance, decreased rotational accuracy, and even shortened bearing life.
[0003] Traditional methods for matching inner and outer races rely primarily on manual measurement and selection, which is inefficient and susceptible to human error, making it difficult to meet the demands of large-scale production of high-precision bearings. In recent years, some automated matching technologies have been proposed, such as group matching methods based on size sorting machines. However, these technologies typically only perform simple sorting based on a single parameter, such as inner or outer diameter, failing to comprehensively consider the geometric tolerances of the inner and outer races, such as roundness, parallelism, and roughness. This can lead to insufficient precision in the matched bearings. Furthermore, existing technologies lack efficient automatic sorting and matching algorithms, making it difficult to achieve rapid and accurate matching of inner and outer races, thus impacting production efficiency and bearing quality. Summary of the Invention
[0004] The purpose of this invention is to provide a bearing ring sorting and pairing device that can automatically pair and sort inner and outer bearing rings to ensure the accuracy of subsequent installation of the inner and outer bearing rings to form a bearing.
[0005] The objective of this invention is achieved through the following technical solution:
[0006] A bearing ring sorting and pairing device includes a sorting mechanism, on which an outer ring unloading mechanism and an inner ring unloading mechanism are provided. An outer ring detection mechanism and an inner ring detection mechanism are fixedly connected between the outer ring unloading mechanism and the inner ring unloading mechanism. The outer ring detection mechanism is used to detect the inner ring of the outer bearing ring on the outer ring unloading mechanism, and the inner ring detection mechanism is used to detect the outer ring of the inner bearing ring on the inner ring unloading mechanism.
[0007] The sorting mechanism includes a sorting bracket, with rotating rollers rotatably connected to both ends of the sorting bracket, a sorting belt drivingly connected between the two rotating rollers, a plurality of sorting holes provided on the sorting belt, and a power mechanism I for driving the rotating rollers to rotate fixedly connected to the sorting bracket.
[0008] The outer ring feeding mechanism includes a bracket I, which is fixedly connected to a sorting bracket. A feeding cylinder I is fixedly connected to the bracket I. A support ring I is fixedly connected to the bottom of the feeding cylinder I. A rotating ring I is rotatably connected to the support ring I. The rotating ring I is provided with multiple receiving holes I. The feeding cylinder I and the receiving holes I are connected. A covering bracket I is fixedly connected to the support ring I. The covering bracket I is located outside the rotating ring I. A power mechanism II for driving the rotating ring I to rotate is fixedly connected to the support ring I.
[0009] The upper end of the support ring I is fixedly connected to the expansion cavity I, and the expansion cavity I is provided with a gas pipe I. The expansion cavity I is located above the sorting hole.
[0010] The outer ring detection mechanism includes a telescopic mechanism I, which is fixedly connected to the support ring I. A telescopic mechanism II is fixedly connected to the telescopic end of the telescopic mechanism I, and a pressure sensor I is fixedly connected to the telescopic end of the telescopic mechanism II.
[0011] The pressure sensor I can contact the inner ring of the outer bearing ring that has moved to the upper side and is located in the receiving hole I;
[0012] The inner ring feeding mechanism includes a bracket II, which is fixedly connected to the sorting bracket. A feeding cylinder II is fixedly connected to the bracket II. A support ring II is fixedly connected to the bottom of the feeding cylinder II. A rotating ring II is rotatably connected to the support ring II. The rotating ring II is provided with multiple storage holes II. Each storage hole II is provided with an insertion slot. A covering bracket II is fixedly connected to the support ring II. The covering bracket II covers the outside of the rotating ring II. A power mechanism III for driving the rotating ring II to rotate is fixedly connected to the support ring II.
[0013] An expansion chamber II is fixedly connected to the support ring II, and a gas pipe II is provided on the expansion chamber II. The expansion chamber II is located above the sorting hole.
[0014] The inner ring detection mechanism includes a telescopic mechanism III, which is fixedly connected to the support ring II. A telescopic mechanism IV is fixedly connected to the telescopic end of the telescopic mechanism III, and a pressure sensor II is fixedly connected to the telescopic end of the telescopic mechanism IV.
[0015] The pressure sensor II is able to contact the outer ring of the inner bearing sleeve that has moved to the upper side and is located in the receiving hole II. Attached Figure Description
[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.
[0017] Figure 1 This is a schematic diagram of the bearing ring sorting and pairing device of the present invention;
[0018] Figure 2 This is a schematic diagram of the sorting mechanism structure of the present invention;
[0019] Figure 3 This is a schematic diagram of the inner ring detection mechanism of the present invention;
[0020] Figure 4 This is a schematic diagram of the outer ring detection mechanism of the present invention;
[0021] Figure 5 This is a schematic diagram of the outer ring blanking mechanism of the present invention;
[0022] Figure 6 This is a schematic diagram of the outer ring blanking mechanism of the present invention;
[0023] Figure 7 This is a schematic diagram of the outer ring blanking mechanism of the present invention;
[0024] Figure 8 This is a schematic diagram of the outer ring blanking mechanism of the present invention;
[0025] Figure 9 This is a schematic diagram of the inner ring blanking mechanism of the present invention;
[0026] Figure 10 This is a schematic diagram of the inner ring blanking mechanism of the present invention;
[0027] Figure 11 This is a schematic diagram of the inner ring blanking mechanism of the present invention;
[0028] Figure 12 This is a schematic diagram of the inner ring blanking mechanism of the present invention.
[0029] In the diagram: 1. Sorting mechanism; 11. Sorting support; 12. Rotating roller; 13. Sorting belt; 14. Sorting hole; 2. Outer ring feeding mechanism; 21. Support I; 22. Feeding cylinder I; 23. Support ring I; 24. Rotating ring I; 25. Receiving hole I; 26. Covering support I; 27. Expansion chamber I; 28. Gas pipe I; 3. Inner ring feeding mechanism; 31. Support II; 32. Feeding cylinder II; 33. Support ring II; 34. Rotating ring II; 35. Receiving hole II; 36. Insertion slot; 37. Covering support II; 38. Expansion chamber II; 39. Gas pipe II; 4. Outer ring detection mechanism; 41. Telescopic mechanism I; 42. Telescopic mechanism II; 43. Pressure sensor I; 5. Outer ring detection mechanism; 51. Telescopic mechanism III; 52. Telescopic mechanism IV; 53. Pressure sensor II; 6. Outer bearing ring; 7. Inner bearing ring. Detailed Implementation
[0030] The present invention will now be described in further detail with reference to the accompanying drawings.
[0031] like Figures 1 to 12As shown below, the structure and function of a bearing ring sorting and pairing device will be described in detail.
[0032] A bearing ring sorting and pairing device includes a sorting mechanism 1, on which an outer ring unloading mechanism 2 and an inner ring unloading mechanism 3 are provided. An outer ring detection mechanism 4 and an inner ring detection mechanism 5 are fixedly connected between the outer ring unloading mechanism 2 and the inner ring unloading mechanism 3. The outer ring detection mechanism 4 is used to detect the inner ring of the outer bearing ring 6 on the outer ring unloading mechanism 2, and the inner ring detection mechanism 5 is used to detect the outer ring of the inner bearing ring 7 on the inner ring unloading mechanism 3.
[0033] When using, such as Figure 1 As shown, the outer ring detection mechanism 4 detects the inner ring of the outer bearing ring 6 on the outer ring blanking mechanism 2, and the inner ring detection mechanism 5 detects the outer ring of the inner bearing ring 7 on the inner ring blanking mechanism 3. Based on the detection of the outer bearing ring 6 or the inner bearing ring 7, the inner bearing ring 7 or the outer bearing ring 6 is located. That is, when the outer bearing ring 6 is used as the reference, the inner bearing ring 7 is located, and when the inner bearing ring 7 is used as the reference, the outer bearing ring 6 is located. Through the movement of the outer ring blanking mechanism 2 and the inner ring blanking mechanism 3, the corresponding matching model is found. After the model matching is completed, the outer bearing ring 6 and the inner bearing ring 7 are placed on the sorting mechanism 1 at the same position for sorting, which facilitates subsequent installation.
[0034] The structure and function of sorting mechanism 1 are described in detail below;
[0035] The sorting mechanism 1 includes a sorting bracket 11, with rotating rollers 12 rotatably connected to both the front and rear ends of the sorting bracket 11. A sorting belt 13 is connected between the two rotating rollers 12. The sorting belt 13 is provided with a plurality of sorting holes 14. A power mechanism I for driving the rotating rollers 12 to rotate is fixedly connected to the sorting bracket 11.
[0036] In use, when it is necessary to change the position of multiple sorting holes 14, the power mechanism I is started. The power mechanism I is preferably a servo motor. The output shaft of the power mechanism I drives the rotating roller 12 to rotate. The rotating roller 12 drives the sorting belt 13 to move. The sorting belt 13 drives the multiple sorting holes 14 to move, thereby adjusting the position of the multiple sorting holes 14 so that the outer bearing ring 6 and the inner bearing ring 7 can fall into the same sorting hole 14, which facilitates subsequent assembly.
[0037] The structure and function of the outer ring blanking mechanism 2 will be explained in detail below;
[0038] The outer ring feeding mechanism 2 includes a bracket I21, which is fixedly connected to the sorting bracket 11. A feeding cylinder I22 is fixedly connected to the bracket I21. A support ring I23 is fixedly connected to the bottom of the feeding cylinder I22. A rotating ring I24 is rotatably connected to the support ring I23. The rotating ring I24 is provided with multiple receiving holes I25. The feeding cylinder I22 and the receiving holes I25 are connected. A covering bracket I26 is fixedly connected to the support ring I23. The covering bracket I26 is located outside the rotating ring I24. A power mechanism II for driving the rotating ring I24 to rotate is fixedly connected to the support ring I23.
[0039] The upper end of the support ring I23 is fixedly connected to the expansion cavity I27, and the expansion cavity I27 is provided with a gas pipe I28. The expansion cavity I27 is located above the sorting hole 14.
[0040] In use, place the outer bearing rings 6 to be measured side by side in the feeding cylinder I22. The lower end of the feeding cylinder I22 is connected to the receiving hole I25. In this way, one of the outer bearing rings 6 will fall into the receiving hole I25. Start the power mechanism II. The output shaft of the power mechanism II starts to rotate. The output shaft of the power mechanism II drives the rotating ring I24 to rotate. The rotating ring I24 drives multiple receiving holes I25 to move, which in turn drives the outer bearing rings 6 in multiple receiving holes I25 to move, so that the outer bearing rings 6 move onto the expansion cavity I27.
[0041] Gas pipe I28 is pre-connected to the air pump, and gas is introduced into expansion chamber I27 through the air pump, causing expansion chamber I27 to expand inward, thereby supporting the outer bearing ring 6.
[0042] The structure and function of the inner ring blanking mechanism 3 will be explained in detail below;
[0043] The inner ring feeding mechanism 3 includes a bracket II 31, which is fixedly connected to the sorting bracket 11. A feeding cylinder II 32 is fixedly connected to the bracket II 31. A support ring II 33 is fixedly connected to the bottom of the feeding cylinder II 32. A rotating ring II 34 is rotatably connected to the support ring II 33. The rotating ring II 34 is provided with multiple receiving holes II 35. Each receiving hole II 35 is provided with an insertion slot 36. A covering bracket II 37 is fixedly connected to the support ring II 33. The covering bracket II 37 covers the outside of the rotating ring II 34. A power mechanism III for driving the rotating ring II 34 to rotate is fixedly connected to the support ring II 33.
[0044] An expansion cavity II38 is fixedly connected to the support ring II33, and a gas pipe II39 is provided on the expansion cavity II38. The expansion cavity II38 is located above the sorting hole 14.
[0045] In use, place the inner bearing rings 7 to be placed and measured side by side in the feeding cylinder II 32. The lower end of the feeding cylinder II 32 is connected to the receiving hole II 35. In this way, one of the inner bearing rings 7 will fall into the receiving hole II 35. Start the power mechanism III. The output shaft of the power mechanism III starts to rotate. The output shaft of the power mechanism III drives the rotating ring II 34 to rotate. The rotating ring II 34 drives multiple receiving holes II 35 to move, which in turn drives the inner bearing rings 7 in multiple receiving holes II 35 to move, so that the inner bearing rings 7 move onto the expansion cavity II 38.
[0046] Gas pipe II39 is connected to the air pump in advance. Gas is introduced into the expansion chamber II38 through the air pump, causing the expansion chamber II38 to expand inward, thereby supporting the inner bearing ring 7.
[0047] The structure and function of the outer ring detection mechanism 4 and the inner ring detection mechanism 5 are described in detail below;
[0048] The outer ring detection mechanism 4 includes a telescopic mechanism I 41, which is fixedly connected to the support ring I 23. A telescopic mechanism II 42 is fixedly connected to the telescopic end of the telescopic mechanism I 41, and a pressure sensor I 43 is fixedly connected to the telescopic end of the telescopic mechanism II 42.
[0049] The pressure sensor I43 can contact the inner ring of the outer bearing ring 6 that has moved to the upper side and is located in the receiving hole I25;
[0050] The inner ring detection mechanism 5 includes a telescopic mechanism Ⅲ51, which is fixedly connected to the support ring Ⅱ33. A telescopic mechanism Ⅳ52 is fixedly connected to the telescopic end of the telescopic mechanism Ⅲ51, and a pressure sensor Ⅱ53 is fixedly connected to the telescopic end of the telescopic mechanism Ⅳ52.
[0051] The pressure sensor II53 can contact the outer ring of the inner bearing ring 7 that has moved to the upper side and is located in the receiving hole II35;
[0052] In use, the outer bearing ring 6 is used as a reference for illustration;
[0053] Start telescopic mechanism I41 and telescopic mechanism II42. Telescopic mechanism I41 and telescopic mechanism II42 can be hydraulic cylinders or electric push rods. The telescopic end of telescopic mechanism I41 drives telescopic mechanism II42 to move. Telescopic mechanism II42 drives pressure sensor I43 to move, thereby adjusting the height of pressure sensor I43 and adjusting the contact position between pressure sensor I43 and outer bearing ring 6. When multiple outer bearing rings 6 of the same model are paired, only the height of pressure sensor I43 needs to be adjusted once.
[0054] When the telescopic mechanism II42 is activated, its telescopic end extends a fixed length each time. This telescopic end drives the pressure sensor I43 to move, causing it to contact the inner ring of the outer bearing ring 6. Since the telescopic end of the telescopic mechanism II42 extends a fixed length each time, and because the tolerance of the inner ring of the outer bearing ring 6 is different, the pressure value of the pressure sensor I43 will be different each time. When the pressure value displayed by the pressure sensor I43 is larger, it indicates that the inner ring of the outer bearing ring 6 is smaller. Therefore, when pairing, a pair of inner bearing rings 7 with a smaller outer ring is required.
[0055] Start the telescopic mechanism Ⅲ51 and telescopic mechanism Ⅳ52. The telescopic mechanism Ⅲ51 and telescopic mechanism Ⅳ52 can be hydraulic cylinders or electric push rods. The telescopic end of telescopic mechanism Ⅲ51 drives telescopic mechanism Ⅳ52 to move. Telescopic mechanism Ⅳ52 drives pressure sensor Ⅱ53 to move, thereby adjusting the height of pressure sensor Ⅱ53 and adjusting the contact position between pressure sensor Ⅱ53 and inner bearing ring 7. When multiple inner bearing rings 7 of the same model are paired, only the height of pressure sensor Ⅱ53 needs to be adjusted once.
[0056] When the telescopic mechanism IV52 is activated, its telescopic end extends a fixed length each time. This extension of the telescopic mechanism IV52 drives the pressure sensor II53 to move, causing the pressure sensor II53 to contact the outer ring of the inner bearing ring 7. Since the extension length of the telescopic mechanism IV52 is fixed each time, and due to the different tolerances of the outer ring of the inner bearing ring 7, the pressure value of the pressure sensor II53 varies each time. When the pressure value displayed by the pressure sensor II53 is larger, it indicates that the inner ring of the outer bearing ring 6 is larger. Therefore, during pairing, the larger the pressure value of the pressure sensor I43, the smaller the inner ring of the outer bearing ring 6 is; the smaller the pressure value displayed by the sensor II53, the smaller the outer ring of the inner bearing ring 7 is. Thus, the outer bearing ring 6 with the smaller inner ring is paired with the inner bearing ring 7 with the smaller outer ring, and the outer bearing ring 6 with the larger inner ring is paired with the inner bearing ring 7 with the larger outer ring.
[0057] When one of the outer bearing rings 6 is used as a reference, and the other inner bearing ring 7 does not meet the pairing rules, the power mechanism III is started. The output shaft of the power mechanism III starts to rotate, and the output shaft of the power mechanism III drives the rotating ring II 34 to rotate. The rotating ring II 34 drives multiple receiving holes II 35 to move, which in turn drives the inner bearing rings 7 in the multiple receiving holes II 35 to move, so that the inner bearing rings 7 move onto the expansion cavity II 38. Then, the inner bearing rings 7 are measured one by one to find a suitable inner bearing ring 7.
[0058] When expansion chamber I 27 contracts, the outer bearing ring 6 falls onto the sorting hole 14. The sorting belt 13 drives the sorting hole 14 to move to the lower side of expansion chamber II 38. Expansion chamber II 38 contracts, and the inner bearing ring 7 falls into the same sorting hole 14, thus completing the matching and sorting of the outer bearing ring 6 and the inner bearing ring 7.
Claims
1. A bearing ring sorting and pairing device, comprising a sorting mechanism (1), characterized in that: The sorting mechanism (1) is provided with an outer ring feeding mechanism (2) and an inner ring feeding mechanism (3). An outer ring detection mechanism (4) and an inner ring detection mechanism (5) are fixedly connected between the outer ring feeding mechanism (2) and the inner ring feeding mechanism (3). The outer ring detection mechanism (4) is used to detect the inner ring of the outer bearing ring (6) on the outer ring feeding mechanism (2), and the inner ring detection mechanism (5) is used to detect the outer ring of the inner bearing ring (7) on the inner ring feeding mechanism (3). The sorting mechanism (1) includes a sorting bracket (11), with rotating rollers (12) rotatably connected to both ends of the sorting bracket (11), and a sorting belt (13) drivingly connected between the two rotating rollers (12). The sorting belt (13) is provided with multiple sorting holes (14), and a power mechanism I for driving the rotating rollers (12) to rotate is fixedly connected to the sorting bracket (11). The outer ring feeding mechanism (2) includes a bracket I (21), which is fixedly connected to the sorting bracket (11). A feeding cylinder I (22) is fixedly connected to the bracket I (21). A support ring I (23) is fixedly connected to the bottom of the feeding cylinder I (22). A rotating ring I (24) is rotatably connected to the support ring I (23). A plurality of storage holes I (25) are provided on the rotating ring I (24). The feeding cylinder I (22) and the storage holes I (25) are connected. A covering bracket I (26) is fixedly connected to the support ring I (23). The covering bracket I (26) is located outside the rotating ring I (24). A power mechanism II for driving the rotating ring I (24) to rotate is fixedly connected to the support ring I (23).
2. The bearing ring sorting and pairing device according to claim 1, characterized in that: The upper end of the support ring I (23) is fixedly connected to the expansion cavity I (27), and the expansion cavity I (27) is provided with a gas pipe I (28). The expansion cavity I (27) is located on the upper side of the sorting hole (14).
3. The bearing ring sorting and pairing device according to claim 2, characterized in that: The outer ring detection mechanism (4) includes a telescopic mechanism I (41), which is fixedly connected to the support ring I (23). A telescopic mechanism II (42) is fixedly connected to the telescopic end of the telescopic mechanism I (41), and a pressure sensor I (43) is fixedly connected to the telescopic end of the telescopic mechanism II (42).
4. The bearing ring sorting and pairing device according to claim 3, characterized in that: The pressure sensor I (43) is able to contact the inner ring of the outer bearing ring (6) that moves to the upper side and is located in the receiving hole I (25).
5. The bearing ring sorting and pairing device according to claim 1, characterized in that: The inner ring feeding mechanism (3) includes a bracket II (31), which is fixedly connected to the sorting bracket (11). A feeding cylinder II (32) is fixedly connected to the bracket II (31). A support ring II (33) is fixedly connected to the bottom of the feeding cylinder II (32). A rotating ring II (34) is rotatably connected to the support ring II (33). Multiple storage holes II (35) are provided on the rotating ring II (34). An insertion slot (36) is provided on each storage hole II (35). A covering bracket II (37) is fixedly connected to the support ring II (33). The covering bracket II (37) covers the outside of the rotating ring II (34). A power mechanism III for driving the rotating ring II (34) to rotate is fixedly connected to the support ring II (33).
6. The bearing ring sorting and pairing device according to claim 5, characterized in that: An expansion cavity II (38) is fixedly connected to the support ring II (33), and a gas pipe II (39) is provided on the expansion cavity II (38). The expansion cavity II (38) is located above the sorting hole (14).
7. The bearing ring sorting and pairing device according to claim 6, characterized in that: The inner ring detection mechanism (5) includes a telescopic mechanism III (51), which is fixedly connected to the support ring II (33). A telescopic mechanism IV (52) is fixedly connected to the telescopic end of the telescopic mechanism III (51), and a pressure sensor II (53) is fixedly connected to the telescopic end of the telescopic mechanism IV (52).
8. The bearing ring sorting and pairing device according to claim 7, characterized in that: The pressure sensor II (53) can contact the outer ring of the inner bearing ring (7) that has moved to the upper side and is located in the receiving hole II (35).
Citation Information
Patent Citations
Automatic selecting and pairing mechanism for inner race and outer race of bearing
CN103352923A