Integrated ball-column combination bearing and assembling method thereof
Through the design of integrated ball column combined bearings, the shell, rolling element and shaft are integrated, and the self-locking is achieved using the steel ball structure, which solves the problems of assembly error and axial sliding, improves the operating accuracy and load-bearing capacity, and extends the service life.
Patent Information
- Application Number
- CN202510054678.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-06-27
AI Technical Summary
During the assembly process, existing bearings are prone to problems such as increased cumulative errors and bearing axial sliding, which affects operating accuracy and stability, resulting in reduced load-bearing capacity and shortened service life.
The integrated ball column combination bearing design adopts the design, and the shell, rolling element and shaft are integrated into one whole, and the bearing self-locking is achieved through the steel ball structure to avoid axial relative sliding of the shaft and shell.
It reduces errors between components, improves operating accuracy and stability, enhances the bearing capacity and extends service life.
Smart Images
Figure CN120212157A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a bearing, and particularly to an integrated ball-column combined bearing and an assembly method thereof. Background Art
[0002] As an essential component in mechanical equipment, the main function of a bearing is to support a mechanical rotating body and reduce the friction load coefficient during the operation of the equipment. During the use of a bearing, generally, the outer ring of the bearing is connected in cooperation with the housing of the mechanical equipment, and the inner ring of the bearing is connected in cooperation with the shaft of the mechanical equipment. This way of separately connecting the outer ring with the housing and the inner ring with the shaft has certain limitations on the installation space of the bearing, thereby affecting the bearing capacity of the bearing and reducing the service life of the bearing; during the processing of each component, tolerances are inevitable, and the cumulative error increases during the assembly process, making it difficult to ensure the runout accuracy and high bearing capacity during the operation of the equipment, and also unable to achieve the stability and consistency during the operation of the equipment, and then the service life of the work will also be greatly reduced. Summary of the Invention
[0003] The object of the present invention is to provide an integrated ball-column combined bearing and an assembly method thereof to solve the defects such as increased cumulative error and axial sliding of the bearing during the assembly of the integrated ball-column combined bearing, and to ensure the accuracy and stability of the bearing during the operation process. Such an integrated ball-column combined bearing can be implemented by the following technical solutions: including a housing, a shaft, rolling elements, steel balls, a ball loading hole, and a plug; the housing is sleeved on the shaft; two rows of rolling elements are fully filled between the housing and the shaft; one row of steel balls is fully filled between the two rows of rolling elements; a ball loading hole is arranged in the shaft; and a plug is arranged in the ball loading hole.
[0004] Further, the rolling elements are one row of cylindrical rollers or two rows of cylindrical rollers.
[0005] Further, the rolling elements are two rows of cylindrical rollers; a retaining ring is arranged between the two rows of cylindrical rollers.
[0006] Further, a steel ball outer raceway is arranged on the housing; a steel ball inner raceway is arranged on the shaft.
[0007] Further, a sealing groove is formed between one end of the housing away from the rolling elements and the shaft; a sealing ring is arranged in the sealing groove.
[0008] Further, the ball loading hole is an "L"-shaped through hole connecting from the end face of the shaft to the steel ball inner raceway; the ball loading hole is composed of a radial hole and an axial hole; the diameter of the axial hole is larger than the diameter of the radial hole.
[0009] Further, the plug includes a flat plug, a spherical plug, and a long plug; the spherical plug is disposed on the side close to the steel ball; one end of the flat plug contacts the spherical plug; the other end of the flat plug contacts the long plug.
[0010] Further, the spherical plug is composed of a hemispherical body and a first cylinder; the diameter of the hemispherical body is equal to the diameter of the first cylinder; the flat plug is composed of a first frustum, a second cylinder, and a second frustum; the first frustum and the second frustum are of equal size; the plane where the first frustum contacts the second cylinder is the lower bottom surface of the first frustum; the diameter of the lower bottom surface of the first frustum is equal to the diameter of the second cylinder; the long plug is composed of a third frustum and a third cylinder; the diameter of the lower bottom surface of the third frustum is equal to the diameter of the third cylinder.
[0011] Further, the height of the spherical plug is equal to the diameter of the axial hole; the height of the flat plug is equal to the diameter of the axial hole; the diameter of the first cylinder is equal to the diameter of the radial hole; the diameter of the second cylinder is equal to the diameter of the radial hole; the diameter of the third cylinder is equal to the diameter of the axial hole.
[0012] An assembly method for a bearing using an integrated ball column: Step 1: Assemble the rolling elements and the shaft; install the rolling elements into the housing of the integrated ball column combined bearing on the equipment, support the rolling elements using a support tooling, and then insert the shaft into the housing; when the rolling elements are two rows of cylindrical rollers, first place one row of cylindrical rollers, then place a retaining ring, and finally place the other row of cylindrical rollers. Step 2: Install the first steel ball; install the first steel ball into the inner raceway through the ball loading hole. Step 3: Install the second steel ball; rotate the shaft to make the first steel ball rotate to the inner raceway, and then install the second steel ball. Step 4: Install the remaining steel balls; repeat the operation in Step 3 until the steel balls are fully loaded. Step 5: Install the spherical plug and the flat plug; install the hemispherical body of the spherical plug and the first frustum of the flat plug into the ball loading hole towards the outer peripheral surface of the bearing, use the long plug to push the spherical plug and the flat plug to the end of the axial hole, rotate the shaft to make the spherical plug and the flat plug fall into the radial hole in sequence, and finally the hemispherical body of the spherical plug contacts the steel ball, and one end of the flat plug contacts the spherical plug. Step 6: Install the long plug; install the third frustum of the long plug into the ball loading hole towards the axial hole direction, and then push the long plug to the end of the axial hole so that the installed long plug contacts the other end of the flat plug, and finally block the flat plug. Step 7: Complete the assembly, and then install other structures of the equipment.
[0013] Compared with the prior art, the integrated ball column combined bearing designed and manufactured according to the above structural form has the following remarkable features: 1. Integrate the outer shell, rolling elements and shaft on the device into a whole to eliminate the errors caused by the fit between components and ensure the accuracy during operation.
[0014] 2. The integrated ball-column combined bearing does not require additional inner and outer rings, saving a certain amount of space. The saved space can be used to appropriately increase the size of the rolling elements, thereby enhancing the bearing capacity of the bearing and extending the service life of the bearing.
[0015] 3. The integrated ball-column combined bearing has a relatively small cumulative tolerance, and can better ensure the stability and consistency during the operation of the device under harsh working conditions.
[0016] 4. The integrated ball-column combined structure can achieve the self-locking of the bearing through the steel ball structure to prevent the axial relative sliding between the shaft and the shell. Description of the Drawings
[0017] Figure 1 It is a schematic structural diagram of the present invention without installing steel balls; Figure 2 It is a schematic structural diagram of the present invention after assembly; Figure 3 It is a schematic structural diagram of the ball plug of the present invention; Figure 4 It is a schematic structural diagram of the flat plug of the present invention; Figure 5 It is a schematic structural diagram of the long plug of the present invention; Figure 6 It is a schematic diagram of assembling the bearing of the present invention; Figure 7 It is a side view of the support tooling of the present invention; In the figure: 1. Outer shell, 2. Shaft, 3. Rolling element, 4. Steel ball, 5. Retaining ring, 6. Ball loading hole, 7. Long plug, 8. Sealing groove, 9. Ball plug, 10. Flat plug, 11. Axial hole, 12. Radial hole, 13. Hemisphere, 14. Cylinder I, 15. Frustum I, 16. Cylinder II, 17. Frustum II, 18. Frustum III, 19. Cylinder III, 20. Support tooling. Detailed Embodiment
[0018] In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
[0019] As shown in the figure: The integrated ball-column combined bearing described in this embodiment includes an outer shell 1, a shaft 2, rolling elements 3, steel balls 4, a ball loading hole 6 and a plug; the outer shell 1 is sleeved on the shaft 2; two rows of rolling elements 3 are fully loaded between the outer shell 1 and the shaft 2; one row of steel balls 4 is fully loaded between the two rows of rolling elements 3; a ball loading hole 6 is arranged in the shaft 2; and a plug is arranged in the ball loading hole 6.
[0020] Further, the rolling elements 3 are one row of cylindrical rollers or two rows of cylindrical rollers.
[0021] Further, the rolling elements 3 are two rows of cylindrical rollers; a retaining ring 5 is arranged between the two rows of cylindrical rollers.
[0022] Based on the above technical solution, the present invention uses the housing 1 to replace the outer ring of the bearing and the shaft 2 to replace the inner ring of the bearing, forming an integral body inside the device, reducing the error between the housing 1, the rolling elements 3 and the shaft 2 during the assembly process, ensuring the runout accuracy of the device during operation, and improving the load-bearing capacity of the device.
[0023] Further, an outer raceway for the steel balls 4 is arranged on the housing 1; an inner raceway for the steel balls 4 is arranged on the shaft 2.
[0024] Further, a sealing groove 8 is formed between one end of the housing 1 away from the rolling elements 3 and the shaft 2; a sealing ring is arranged in the sealing groove 8.
[0025] Further, the ball loading hole 6 is an "L"-shaped through hole connecting from the end face of the shaft 2 to the inner raceway of the steel balls 4; the ball loading hole 6 is composed of a radial hole 12 and an axial hole 11; the diameter of the axial hole 11 is larger than the diameter of the radial hole 12.
[0026] Based on the above technical solution, the steel balls 4 are loaded from the ball loading hole 6 between the housing 1 and the shaft 2, achieving a self-locking effect on the shaft 2 bearing, positioning the housing 1 and the shaft 2, and preventing axial relative sliding between the shaft 2 and the housing 1.
[0027] Further, the plug includes a flat plug 10, a ball plug 9 and a long plug 7; the ball plug 9 is arranged on the side close to the steel balls 4; one end of the flat plug 10 contacts the ball plug 9; the other end of the flat plug 10 contacts the long plug 7.
[0028] Further, the ball plug 9 is composed of a hemispherical body 13 and a first cylinder 14; the diameter of the hemispherical body 13 is equal to the diameter of the first cylinder 14; the flat plug 10 is composed of a first frustum 15, a second cylinder 16 and a second frustum 17; the first frustum 15 and the second frustum 17 are of the same size; the plane where the first frustum 15 contacts the second cylinder 16 is the lower bottom surface of the first frustum; the diameter of the lower bottom surface of the first frustum 15 is equal to the diameter of the second cylinder 16; the long plug 7 is composed of a third frustum 18 and a third cylinder 19; the diameter of the lower bottom surface of the third frustum 18 is equal to the diameter of the third cylinder 19.
[0029] Further, the height of the spherical plug 9 is equal to the diameter of the axial hole 11; the height of the flat plug 10 is equal to the diameter of the axial hole 11; the diameter of the first cylinder 14 is equal to the diameter of the radial hole 12; the diameter of the second cylinder 16 is equal to the diameter of the radial hole 12; the diameter of the third cylinder 19 is equal to the diameter of the axial hole of the shaft 2.
[0030] Based on the above technical solution, the spherical plug 9 and the flat plug 10 are vertically placed into the axial hole 11 in sequence. The heights of the spherical plug 9 and the flat plug 10 are exactly the diameter of the axial hole 11, so the spherical plug 9 and the flat plug 10 can be pushed into the axial hole 11. Since the diameter of the axial hole 11 is greater than the diameter of the radial hole 12, and the spherical plug 9, the flat plug 10 are also equal to the diameter of the radial hole 12, when the spherical plug 9 and the flat plug 10 fall into the radial hole 12, the spherical plug 9 and the flat plug 10 will not fall into the radial hole 12 in other forms and will always maintain the form when initially placed in the axial hole 11 in the radial hole 12. Finally, the flat plug 10 is blocked by the long plug 7.
[0031] An assembly method of using an integrated ball column to form a bearing: Step 1: Assemble the rolling element 3 and the shaft 2; install the rolling element 3 into the housing 1 of the integrated ball column combination bearing on the equipment, support the rolling element 3 with the support tooling 20, and then sleeve the shaft 2 into the housing 1; when two rows of cylindrical rollers are installed as the rolling element 3, first place one row of cylindrical rollers, then place the retaining ring 5, and finally place the other row of cylindrical rollers; Step 2: Install the first steel ball 4, and install a steel ball 4 into the inner raceway through the ball loading hole 6; Step 3: Install the second steel ball 4, rotate the housing 1 so that the first steel ball 4 rotates to the inner raceway, and then install the second steel ball 4; Step 4: Install the remaining steel balls; repeat the operation in Step 3 until the steel balls 4 are filled; Step 5: Install the spherical plug and the flat plug; install the hemispherical body of the spherical plug and the first frustum of the flat plug towards the outer peripheral surface of the bearing into the ball loading hole, use the long plug to push the spherical plug and the flat plug to the end of the axial hole, rotate the shaft so that the spherical plug and the flat plug fall into the radial hole in sequence, and finally the hemispherical body of the spherical plug contacts the steel ball, and one end of the flat plug contacts the spherical plug; Step 6: Install the long plug, install the third frustum of the long plug towards the axial hole into the ball loading hole, and then push the long plug to the end of the axial hole so that the installed long plug contacts the other end of the flat plug, and finally block the flat plug; Step 7: Complete the assembly, and then install other structures of the equipment.
[0032] The above are only the preferred embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments and there can be many variations. All variations that can be directly derived or associated by those of ordinary skill in the art from the disclosed content of the present invention shall be considered as the protection scope of the present invention.
Claims
1. Integrated ball-column combination bearing, characterized by: It includes a shell, a shaft, rolling elements, steel balls, a ball loading hole and a plug; the shell is sleeved on the shaft; two rows of rolling elements are fully loaded between the shell and the shaft; one row of steel balls is fully loaded between the two rows of rolling elements; a ball loading hole is arranged in the shaft; and a plug is arranged in the ball loading hole.
2. The integrated ball-column combined bearing according to claim 1, characterized in that: The rolling elements are one row of cylindrical rollers or two rows of cylindrical rollers.
3. The integrated ball-column combined bearing according to claim 2, characterized in that: The rolling bodies are two rows of cylindrical rollers; a retaining ring is arranged between the two rows of cylindrical rollers.
4. The integrated ball-column combined bearing according to claim 1, characterized in that: An outer steel ball raceway is arranged on the shell; and an inner steel ball raceway is arranged on the shaft.
5. The integrated ball-column combined bearing according to claim 1, characterized in that: A sealing groove is formed between the end of the housing away from the rolling element and the shaft; a sealing ring is arranged in the sealing groove.
6. The integrated ball-column bearing according to claim 4, characterized in that: The ball loading hole is an "L"-shaped through hole connected from the end face of the shaft to the inner raceway of the steel ball; the ball loading hole consists of a radial hole and an axial hole; the diameter of the axial hole is larger than the diameter of the radial hole.
7. The integrated ball-column combined bearing according to claim 6, characterized in that: The plug includes a flat plug, a ball plug and a long plug; the ball plug is arranged on the side close to the steel ball; one end of the flat plug contacts the ball plug; the other end of the flat plug contacts the long plug.
8. The integrated ball-column combined bearing according to claim 7, characterized in that: The ball plug is composed of a hemisphere and a cylinder one; the diameter of the hemisphere is equal to the diameter of the cylinder one; the flat plug is composed of a frustum one, a cylinder two and a frustum two; the frustum one and the frustum two are equal in size; the plane where the frustum one contacts the cylinder two is the lower base of the frustum; the diameter of the lower base of the frustum is equal to the diameter of the cylinder two; the long plug is composed of a frustum three and a cylinder three; the diameter of the lower base of the frustum three is equal to the diameter of the cylinder three.
9. The integrated ball-column bearing according to claim 8, characterized in that: The height of the ball plug is equal to the diameter of the axial hole; the height of the flat plug is equal to the diameter of the axial hole; the diameter of the cylinder one is equal to the diameter of the radial hole; the diameter of the cylinder two is equal to the diameter of the radial hole; the diameter of the cylinder three is equal to the diameter of the axial hole.
10. A method for assembling a bearing composed of an integrated ball column according to any one of claims 1 to 9, characterized in that: Step 1: Assemble the rolling element and the shaft; install the rolling element into the housing of the integrated ball-column combination bearing on the equipment, support the rolling element with a supporting tool, and then insert the shaft into the housing; Step 2: Install the first steel ball; install the first steel ball into the inner raceway through the ball installation hole; Step 3: Install the second steel ball; rotate the shaft to make the first steel ball move to the inner raceway, and then install the second steel ball; Step 4: Add the remaining steel balls; repeat step 3 until the steel balls are full; Step 5: Install the ball plug and the flat plug; install the hemisphere of the ball plug and the truncated cone of the flat plug into the ball installation hole toward the outer peripheral surface of the bearing, use the long plug to push the ball plug and the flat plug to the end of the axial hole, rotate the shaft to make the ball plug and the flat plug fall into the radial hole in turn, and finally the hemisphere of the ball plug contacts the steel ball, and one end of the flat plug contacts the ball plug; Step 6: Install the long plug, and insert the three sides of the truncated cone of the long plug into the ball-loading hole in the direction of the axial hole, and then push the long plug to the end of the axial hole, so that the installed long plug contacts the other end of the flat plug, and finally plug the flat plug; Step 7: Complete the assembly and then install other structures of the equipment.