Integrated ball-column combined bearing
By integrating the housing, rolling elements and shaft into a single unit through the integrated ball-and-roll bearing structure, the problems of large assembly errors and insufficient load-bearing capacity are solved, achieving high precision and stable operation.
Patent Information
- Application Number
- CN202520078670.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-01-14
AI Technical Summary
Existing bearings have large cumulative errors during assembly, which affect operational accuracy and stability. Furthermore, the traditional separate assembly structure limits load-bearing capacity and service life.
The bearing adopts an integrated ball-and-roll combination structure, which integrates the housing, rolling elements and shaft into a whole. The steel ball structure achieves self-locking, reducing cumulative errors, and the sealing groove and plug design ensure the accuracy and stability of the bearing.
It improves the bearing's operating accuracy and stability, enhances its load-bearing capacity, extends its service life, and prevents axial slippage.
Smart Images
Figure CN223594758U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a bearing, in particular to an integrated ball and cylindrical combined bearing. BACKGROUND
[0002] As an essential component in mechanical equipment, the main function of bearing is to support the mechanical rotating body and reduce the friction load coefficient in the operation process. In the use process, the outer ring of the bearing is usually connected with the shell of the mechanical equipment, and the inner ring of the bearing is connected with the shaft of the mechanical equipment. This separate connection mode of the outer ring and the shell and the inner ring and the shaft has certain limitations on the installation space of the bearing, thereby affecting the bearing capacity and reducing the service life of the bearing. In the machining process of each part, tolerance is inevitable, and the cumulative error increases in the assembly process, so it is difficult to ensure the runout accuracy and high bearing capacity of the equipment in the operation process, and the stability and consistency of the equipment in the operation process cannot be realized, thereby greatly reducing the service life. SUMMARY
[0003] The utility model aims at providing an integrated ball and cylindrical combined bearing to solve the problems of cumulative error increase and bearing axial sliding in the assembly of the integrated ball and cylindrical combined bearing, and ensure the accuracy and stability of the bearing in the operation process. The integrated ball and cylindrical combined bearing can be implemented by the following technical scheme: comprising 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 filled between the shell and the shaft; a row of steel balls is filled between the two rows of rolling elements; the ball loading hole is arranged in the shaft; and the 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, and a retainer ring is arranged between the two rows of cylindrical rollers.
[0006] Further, a steel ball outer raceway is arranged on the shell, and a steel ball inner raceway is arranged on the shaft.
[0007] Further, a sealing groove is formed between the shell and the shaft away from the rolling elements, and a sealing ring is arranged in the sealing groove.
[0008] Further, the ball loading hole is an "L"-shaped through hole connected from the end surface of the shaft to the steel ball inner raceway, and the ball loading hole is composed of a radial hole and an axial hole, and the diameter of the axial hole is greater than that of the radial hole.
[0009] Further, 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; the flat plug is in contact with the ball plug at one end; the flat plug is in contact with the long plug at the other end.
[0010] Further, the ball plug is composed of a hemisphere and a cylinder one; the diameter of the hemisphere is equal to that of the cylinder one; the flat plug is composed of a circular truncated cone one, a cylinder two and a circular truncated cone two; the circular truncated cone one and the circular truncated cone two are equal in size; the flat surface of the circular truncated cone one in contact with the cylinder two is the lower bottom surface of the circular truncated cone; the diameter of the lower bottom surface of the circular truncated cone is equal to that of the cylinder two; the long plug is composed of a circular truncated cone three and a cylinder three; the diameter of the lower bottom surface of the circular truncated cone three is equal to that of the cylinder three.
[0011] Further, 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.
[0012] The assembly method of the integrated ball-cylinder bearing is as follows:
[0013] Step one: assemble the rolling body and the shaft; the rolling body is assembled into the outer shell of the integrated ball-cylinder bearing on the equipment, the rolling body is supported by the supporting tool, and then the shaft is inserted into the outer shell; when the rolling body is two rows of cylindrical rollers, one row of cylindrical rollers is first put in, then the retaining ring is put in, and finally the other row of cylindrical rollers is put in;
[0014] Step two: assemble the first steel ball; the first steel ball is assembled into the inner raceway through the ball assembling hole;
[0015] Step three: assemble the second steel ball; the first steel ball is turned to the inner raceway by rotating the shaft, and then the second steel ball is assembled;
[0016] Step four: assemble the remaining steel balls; the action of step three is repeated until the steel balls are fully assembled;
[0017] Step five: assemble the ball plug and the flat plug; the hemisphere of the ball plug and the circular truncated cone one of the flat plug are assembled into the ball assembling hole in the direction of the outer peripheral surface of the bearing, the ball plug and the flat plug are pushed to the end of the axial hole by the long plug, the ball plug and the flat plug are sequentially dropped into the radial hole by rotating the shaft, finally the hemisphere of the ball plug is in contact with the steel ball, and one end of the flat plug is in contact with the ball plug;
[0018] Step six: assemble the long plug; the circular truncated cone three of the long plug is assembled into the ball assembling hole in the direction of the axial hole, and then the long plug is pushed to the end of the axial hole, so that the assembled long plug is in contact with the other end of the flat plug, and finally the flat plug is plugged;
[0019] Step seven: complete the assembly, and then install other structures of the equipment.
[0020] The integrated ball-cylinder combined bearing designed and manufactured according to the above structural form has the following remarkable features compared with the prior art:
[0021] 1. The shell, the rolling body and the shaft on the equipment are integrated as a whole, so that the errors caused by the cooperation between the components are eliminated and the precision in the operation process is ensured.
[0022] 2. The integrated ball-cylinder combined bearing does not need additional inner and outer rings, so that certain space is saved, the size of the rolling body can be appropriately increased by the saved space, so that the load capacity of the bearing is enhanced and the service life of the bearing is prolonged.
[0023] 3. The integrated ball-cylinder combined bearing has small cumulative tolerance, so that the stability and consistency in the operation process of the equipment can be better ensured under the harsh working conditions.
[0024] 4. The integrated ball-cylinder combined structure can realize self-locking of the bearing through the steel ball structure, so that the axial relative sliding of the shaft and the shell is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 Fig. 1 is a structural schematic view of the structure without the steel ball of the utility model;
[0026] Figure 2 Fig. 2 is a structural schematic view of the structure after assembly of the utility model;
[0027] Figure 3 Fig. 3 is a structural schematic view of the ball plug of the utility model;
[0028] Figure 4 Fig. 4 is a structural schematic view of the flat plug of the utility model;
[0029] Figure 5 Fig. 5 is a structural schematic view of the long plug of the utility model;
[0030] Figure 6 Fig. 6 is a schematic view of the bearing assembly of the utility model;
[0031] Figure 7 Fig. 7 is a side view of the supporting tool of the utility model;
[0032] In the drawings: 1, shell, 2, shaft, 3, rolling body, 4, steel ball, 5, retainer, 6, ball loading hole, 7, long plug, 8, sealing groove, 9, ball plug, 10, flat plug, 11, axial hole, 12, radial hole, 13, hemispherical body, 14, cylindrical body one, 15, circular table one, 16, cylindrical body two, 17, circular table two, 18, circular table three, 19, cylindrical body three, 20, supporting tool. DETAILED DESCRIPTION
[0033] In order to make the structure and function of the utility model more clear, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment.
[0034] As shown in the figure: the integrated ball-cylinder combined bearing described in the embodiment comprises a shell 1, a shaft 2, rolling elements 3, steel balls 4, ball loading holes 6 and plugs; the shell 1 is sleeved on the shaft 2; the shell 1 and the shaft 2 are filled with two rows of rolling elements 3; the two rows of rolling elements 3 are filled with a row of steel balls 4; the shaft 2 is provided with the ball loading hole 6; the ball loading hole 6 is provided with the plug.
[0035] Further, the rolling elements 3 are one row of cylindrical rollers or two rows of cylindrical rollers.
[0036] Further, the rolling elements 3 are two rows of cylindrical rollers; the two rows of cylindrical rollers are provided with a retainer 5.
[0037] Based on the above technical scheme, the utility model uses the shell 1 to replace the bearing outer ring, and the shaft 2 to replace the bearing inner ring, thereby forming a whole in the equipment, reducing the error between the shell 1, the rolling elements 3 and the shaft 2 in the assembly process, ensuring the runout accuracy of the equipment in the running process and improving the carrying capacity of the equipment.
[0038] Further, the shell 1 is provided with an outer raceway of the steel ball 4; the shaft 2 is provided with an inner raceway of the steel ball 4.
[0039] Further, a sealing groove 8 is formed between the shell 1 far from the rolling elements 3 and the shaft 2; the sealing groove 8 is provided with a sealing ring.
[0040] Further, the ball loading hole 6 is an L-shaped through hole connected from the end surface of the shaft 2 to the inner raceway of the steel ball 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 greater than the diameter of the radial hole 12.
[0041] Based on the above technical scheme, the steel ball 4 is loaded from the ball loading hole 6 to the space between the shell 1 and the shaft 2, thereby realizing the self-locking effect of the shaft 2 bearing, positioning the shell 1 and the shaft 2 and preventing the shaft 2 from axially sliding relative to the shell 1.
[0042] Further, the plug comprises 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 ball 4; one end of the flat plug 10 is in contact with the ball plug 9; the other end of the flat plug 10 is in contact with the long plug 7.
[0043] Further, the ball plug 9 is composed of a hemisphere 13 and a cylinder 14; the diameter of the hemisphere 13 is equal to the diameter of the cylinder 14; the flat plug 10 is composed of a circular truncated cone 15, a cylinder 16 and a circular truncated cone 17; the circular truncated cone 15 and the circular truncated cone 17 are equal in size; the plane of the circular truncated cone 15 in contact with the cylinder 16 is the lower base of the circular truncated cone 15; the diameter of the lower base of the circular truncated cone 15 is equal to the diameter of the cylinder 16; the long plug 7 is composed of a circular truncated cone 18 and a cylinder 19; the diameter of the lower base of the circular truncated cone 18 is equal to the diameter of the cylinder 19.
[0044] Further, the height of the ball 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 cylinder 14 is equal to the diameter of the radial hole 12; the diameter of the cylinder 16 is equal to the diameter of the radial hole 12; the diameter of the cylinder 19 is equal to the diameter of the axial hole.
[0045] Based on the above technical solution, the ball plug 9 and the flat plug 10 are sequentially and vertically placed into the axial hole 11, the height of the ball plug 9 and the flat plug 10 is just the diameter of the axial hole 11, the ball plug 9 and the flat plug 10 can be pushed into the axial hole 11, because the diameter of the axial hole 11 is greater than the diameter of the radial hole 12, the diameter of the ball plug 9 and the flat plug 10 is equal to the diameter of the radial hole 12, so when the ball plug 9 and the flat plug 10 fall into the radial hole 12, the ball plug 9 and the flat plug 10 will not fall into the radial hole 12 in other forms, but will always maintain the form when they are initially placed into the axial hole 11, and finally the long plug 7 is used to plug the flat plug 10.
[0046] The assembly method of the integrated ball-cylinder bearing is as follows:
[0047] Step one: assemble the rolling body 3 and the shaft 2; the rolling body 3 is assembled into the outer shell 1 of the integrated ball-cylinder bearing on the equipment, the rolling body 3 is supported by the supporting tool 20, and then the shaft 2 is sleeved into the outer shell 1; when the rolling body 3 is two rows of cylindrical rollers, one row of cylindrical rollers is first placed, then the retainer 5 is placed, and finally the other row of cylindrical rollers is placed;
[0048] Step two: assemble the first steel ball 4, and the steel ball 4 is assembled into the inner raceway through the ball assembling hole 6;
[0049] Step three: assemble the second steel ball 4, rotate the outer shell 1 to make the first steel ball 4 rotate to the inner raceway, and then assemble the second steel ball 4;
[0050] Step four: assemble the remaining steel balls; repeat the action of step three until the steel balls 4 are full;
[0051] Step five: install the ball plug and the flat plug; install the hemisphere of the ball plug and the circular cone of the flat plug into the ball installing hole, push the ball plug and the flat plug to the end of the axial hole by the long plug, 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;
[0052] Step six: install the long plug, install the circular cone of the long plug into the ball installing 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 the flat plug is plugged;
[0053] Step seven: complete the assembly, and then install other structures of the equipment.
[0054] The above is only the best embodiment of the present application. Obviously, the present application is not limited to the above embodiment, and there can be many variations. All variations that can be directly derived or inferred from the disclosed content by those of ordinary skill in the art should be considered as falling within the scope of the present application.
Claims
1. An integrated ball-and-spindle bearing, characterized in that: It includes a housing, a shaft, rolling elements, steel balls, a ball-filling hole, and a plug; the housing is fitted onto the shaft; two rows of rolling elements are fully loaded between the housing and the shaft; a row of steel balls is fully loaded between the two rows of rolling elements; a ball-filling hole is provided inside the shaft; and a plug is provided in the ball-filling hole.
2. The integrated ball-and-spindle bearing according to claim 1, characterized in that: The rolling element is one row of cylindrical rollers or two rows of cylindrical rollers.
3. The integrated ball-and-spindle bearing according to claim 2, characterized in that: The rolling element consists of two rows of cylindrical rollers; a retaining ring is provided between the two rows of cylindrical rollers.
4. The integrated ball-and-spindle bearing according to claim 1, characterized in that: The outer casing is provided with an outer raceway for steel balls; the shaft is provided with an inner raceway for steel balls.
5. The integrated ball-and-spindle bearing according to claim 1, characterized in that: A sealing groove is formed between the end of the outer casing away from the rolling element and the shaft; a sealing ring is provided in the sealing groove.
6. The integrated ball-and-spindle bearing according to claim 4, characterized in that: The ball loading hole is an "L"-shaped through hole that connects from the end face of the shaft to the inner raceway of the steel ball; the ball loading hole consists of two parts: 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-and-spindle 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 disposed near the side of the steel ball; one end of the flat plug is in contact with the ball plug; the other end of the flat plug is in contact with the long plug.
8. The integrated ball-and-spindle bearing according to claim 7, characterized in that: The ball plug is composed of a hemisphere and a cylinder; the diameter of the hemisphere is equal to the diameter of the cylinder. The flat plug is composed of a frustum, a cylinder, and a second frustum; the frustums are equal in size; the plane where the frustum contacts the cylinder is the lower surface of the frustum; the diameter of the lower surface of the frustum is equal to the diameter of the cylinder. The long plug is composed of a third frustum and a third cylinder; the diameter of the lower surface of the third frustum is equal to the diameter of the third cylinder.
9. The integrated ball-and-spindle 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 cylinder one is equal to the diameter of the radial hole; the diameter of cylinder two is equal to the diameter of the radial hole; and the diameter of cylinder three is equal to the diameter of the axial hole.