Retaining ring press-fitting device
By using the guide hole and spiral step design of the press-fit retaining ring device, the problem of difficult retaining ring assembly is solved, achieving efficient and accurate retaining ring positioning and stability. It is suitable for the assembly of bearings without elastic retaining rings, improving production efficiency and product quality.
Patent Information
- Application Number
- CN202520489655.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-03-19
AI Technical Summary
In the existing technology, the retaining ring is difficult to assemble, has low assembly accuracy, low efficiency and poor stability. In particular, bearings with non-elastic retaining ring designs are difficult to accurately position and stabilize during assembly, and existing improvement solutions are costly or ineffective.
A press-fit retaining ring device was designed, which adopts a guide hole and a spiral step structure to ensure that the retaining ring is accurately assembled into the retaining ring groove. Through the tapered design of the guide hole and the uniform pressure transmission of the spiral step, the smooth downward movement and accurate positioning of the retaining ring are achieved.
It improves the accuracy and efficiency of retaining ring assembly, avoids offset or misalignment, ensures product quality and reliability, is suitable for mass production, and reduces operational complexity and cost.
Smart Images
Figure CN223676828U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of roller bearing assembly, especially relates to a press -fitting check ring device. BACKGROUND
[0002] In the field of mechanical manufacturing, bearings are widely used in various mechanical equipment as key components, whose performance and reliability directly affect the operation efficiency and service life of the equipment. As an important part of the bearing, the check ring is mainly used to fix the internal parts of the bearing (such as balls or rollers) to prevent them from falling off or misplacing. However, some special structure bearings (such as bearings without elastic check ring design) face the following technical problems in the assembly process:
[0003] 1. Difficulty in assembling check ring
[0004] Due to the lack of elasticity of the check ring itself, it cannot be directly pressed into the check ring groove of the bearing through the traditional elastic hemming method. The traditional assembly method relies on the elastic deformation of the check ring, but the non-elastic check ring cannot realize this process, resulting in assembly failure or the check ring cannot be completely in place.
[0005] 2. Low assembly precision
[0006] In the prior art, check ring assembly usually relies on manual operation or simple mechanical auxiliary tools. This method is easy to cause the check ring to deviate from the predetermined position, even damage the bearing or the check ring itself, affecting the quality and performance of the product.
[0007] 3. Low efficiency
[0008] The traditional assembly method is time-consuming and needs to be adjusted and repeated many times, which is difficult to meet the requirements of modern production lines for high efficiency and high consistency. Especially in large-scale production, the low assembly efficiency will significantly increase the production cost.
[0009] 4. Poor stability
[0010] Even if the check ring is successfully assembled in place, due to the lack of effective guiding and positioning mechanism in the assembly process, the check ring is easy to loosen or fall off in subsequent use, affecting the overall stability and reliability of the bearing.
[0011] In view of the above problems, although there are some improvement schemes in the prior art, there are still the following shortcomings:
[0012] Some schemes use complex mechanical structures or automatic equipment, resulting in high cost and difficult to popularize and apply.
[0013] Some schemes improve the assembly efficiency, but cannot fundamentally solve the problem of check ring assembly out of place or poor stability.
[0014] Therefore, a special press-fitting retainer assembly device with simple structure, convenient operation, high assembly precision and good stability is urgently needed to solve the problems in the prior art. Content of the utility model
[0015] In view of the above problems, a press-fitting retainer device is provided.
[0016] The technical scheme of the utility model is as follows: a press-fitting retainer device, comprising an upper die, a lower die, a bearing and a retainer, the bearing is arranged at the inner side of the bottom of the lower die, the inner side of the bearing outer ring is provided with a retainer groove, the center of the lower die is provided with a guide hole, one end of the upper die is inserted into the guide hole, the retainer between the upper die and the bearing is pressed into the retainer groove along the guide hole and finally pressed into the retainer groove under the pressure of the upper die, and the guide hole is a tapered hole with a larger top radius than a bottom radius.
[0017] Preferably, the last end of the bottom of the upper die is provided with a spiral step for uniformly transmitting the pressure to the retainer and ensuring smooth downward movement of the retainer.
[0018] Preferably, the lower die comprises an outer ring and an inner ring, and the outer ring is sleeved outside the inner ring.
[0019] Preferably, the bottom of the outer ring is provided with a bearing pressing groove, and the bearing is arranged in the bearing pressing groove.
[0020] Preferably, the guide hole is arranged at the center of the inner ring.
[0021] The utility model has the advantages that: the press-fitting retainer device of the utility model ensures that the retainer can be accurately assembled into the retainer groove and avoids deviation or misplacement through the design of the guide hole and the spiral step; the whole assembly process is simple and fast, the assembly time is significantly shortened, and the device is suitable for large-scale production; the retainer is uniformly stressed during assembly, deformation or damage is avoided, product quality and reliability are ensured, the device structure is simple, operation is convenient, and the technical requirements for operators are reduced. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 Fig. 1 is a structural schematic view of the press-fitting retainer device of the utility model;
[0023] Figure 2 Fig. 2 is a front view of the upper die of the utility model.
[0024] In the drawings, the names of the components corresponding to the reference numerals are as follows:
[0025] 1, upper die; 11, spiral step; 2, lower die; 21, outer ring; 211, bearing pressing groove; 22, inner ring; 221, guide hole; 3, bearing; 31, retainer groove; 4, retainer; DETAILED DESCRIPTION
[0026] The utility model will be explained in detail below in combination with the drawings and specific embodiments. The embodiments are implemented on the premise of the technical scheme of the utility model, and detailed implementation modes and specific operation processes are given, but the protection scope of the utility model is not limited to the following embodiments.
[0027] Reference Figure 1 2 As shown in the figure, the application discloses a press-fitting retainer device, which comprises an upper die 1, a lower die 2, a bearing 3 and a retainer 4. The inner side of the bottom of the lower die 2 is provided with the bearing 3, the inner side of the bearing outer ring of the bearing 3 is provided with a retainer groove 31, the center of the lower die 2 is provided with a guide hole 221, one end of the bottom of the upper die 1 is cylindrical and is inserted into the guide hole 221, and the retainer 4 is arranged between the upper die 1 and the bearing 3. The retainer 4 is pressed by the upper die 1, moves downward along the guide hole 221, and is finally pressed into the retainer groove 31.
[0028] The last end of the cylindrical end of the bottom of the upper die 1 is provided with a spiral step 11. When the upper die 1 moves downward, the pressure is uniformly transmitted to the retainer 4 through the spiral step 11, so that the retainer 4 can stably move downward. The inclined surface of the spiral step is in contact with the opening of the retainer 4, so that the retainer 4 is gradually closed, and the retainer 4 can be stably and accurately pressed into the retainer groove 31.
[0029] The lower die 2 comprises an outer ring 21 and an inner ring 22. The outer ring 21 is arranged outside the inner ring 22. In this embodiment, the top of the inner ring 22 is provided with an outer edge, and the outer edge is provided with a bolt hole, so that the outer ring 21 and the inner ring 22 are connected through bolts.
[0030] The bottom of the outer ring 21 is provided with a bearing pressing groove 211, and the bearing 3 is arranged in the bearing pressing groove 211.
[0031] The guide hole 221 is arranged in the center of the inner ring 22. The side wall of the guide hole 221 is inclined outward relative to the vertical direction. In this embodiment, the angle of inclination is 5°, so that the guide hole 221 forms a tapered hole with a large top radius and a small bottom radius. The retainer 4 can be accurately aligned with the retainer groove 31 during assembly, the need for manual adjustment is reduced, and the assembly accuracy and efficiency are improved.
[0032] The working mode is as follows: a retainer 4 is placed in the 5° tapered guide hole of the lower die 2, and the bearing 3 is placed in the bearing pressing groove 211 of the lower die 2. Under the action of the upper die 1, the retainer 4 gradually moves downward along the side wall of the guide hole 221. The opening of the retainer 4 is slowly closed under the guidance of the spiral step 11, until the retainer 4 is completely closed and aligned with the retainer groove 31. When the retainer 4 is completely closed and aligned with the retainer groove 31, the upper die 1 continues to apply pressure to press the retainer 4 into the retainer groove 31, and the assembly process is completed.
[0033] The beneficial effect is that the guiding hole 221 and the spiral step 11 ensure that the retaining ring 4 can be accurately assembled into the retaining ring groove 31, avoiding deviation or misplacement; the whole assembling process is simple and fast, the assembling time is significantly shortened, and the device is suitable for large-scale production; the retaining ring 4 is uniformly stressed during the assembling process, deformation or damage is avoided, product quality and reliability are ensured; the device has simple structure, convenient operation, and reduces the technical requirements for operators.
[0034] It should be noted that the above terms "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The meaning of "a plurality of" is two or more. "Mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected.
[0035] The above is only a preferred embodiment of the present application, and is not any form or substantial limitation on the present application. It should be noted that for ordinary skilled persons in the art, without departing from the present application, some improvements and supplements can be made, which should be considered as the protection range of the present application. For those skilled in the art, without departing from the spirit and scope of the present application, some changes, modifications and equivalent changes can be made based on the disclosed technical content, which are equivalent embodiments of the present application; at the same time, any equivalent change, modification and evolution of the above-mentioned embodiments according to the essential technology of the present application are still within the scope of the technical scheme of the present application.
Claims
1. A press-in retainer device, characterized by The application relates to a die set, which comprises an upper die (1), a lower die (2), a bearing (3) and a retainer (4); the bearing (3) is arranged at the inner side of the bottom of the lower die (2), the inner side of the bearing outer ring of the bearing (3) is provided with a retainer groove (31), the center of the lower die (2) is provided with a guide hole (221), one end of the upper die (1) is inserted into the guide hole (221), the retainer (4) is arranged between the upper die (1) and the bearing (3) and is pressed along the guide hole (221) to finally be pressed into the retainer groove (31) under the pressure of the upper die (1), and the guide hole (221) is a tapered hole with a top radius larger than a bottom radius.
2. The press ring device of claim 1, wherein, The bottom end of the upper die (1) is provided with a spiral step (11) for uniformly transmitting pressure to the retainer (4) and ensuring smooth downward movement of the retainer (4).
3. The press ring device of claim 1, wherein, The lower die (2) comprises an outer ring (21) and an inner ring (22); the outer ring (21) is arranged outside the inner ring (22).
4. The press ring device of claim 3, wherein, The bottom of the outer ring (21) is provided with a bearing pressing groove (211), and the bearing (3) is arranged in the bearing pressing groove (211).
5. The press ring device of claim 3, wherein, The guide hole (221) is arranged at the center of the inner ring (22).