A pressing device for the inner component of a tapered roller bearing with a plastic steel cage.
By designing a press-fitting device that includes a base, a top cover, and a follower plate, and using elastic elements to buffer and guide the movement of the inner ring of the bearing, the problems of short life of simple tooling and tipping of tapered rollers are solved, and low-wear, long-life press-fitting of the inner components of tapered roller plastic steel cage bearings is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WAFANGDIAN BEARING GRP STATE BEARING ENG TECH RES CENT CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-26
AI Technical Summary
The existing simple tooling has a short service life during the press-fitting of tapered roller bearings with plastic steel cages, which cannot meet the needs of mass production, and is prone to causing the tapered rollers to tip over and damage the plastic steel cages.
Design a pressing device including a base, a top cover and a follower plate. Utilize elastic elements to buffer and guide the movement of the bearing inner ring, preventing the tapered rollers from tipping over and colliding. Employ a central guide sleeve to guide the accurate positioning of the bearing inner ring and provide buffering and vibration reduction.
It achieves low-wear, long-life press-fitting of internal components in tapered roller bearings with plastic steel cages, ensuring that the tapered rollers do not tip over, reducing impact damage, and meeting the needs of mass production.
Smart Images
Figure CN224283255U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bearing assembly tooling technology, specifically relating to a pressing device for the internal components of a tapered roller plastic steel cage bearing. Background Technology
[0002] In the production and assembly process of tapered roller bearings with plastic steel cages, the bearing inner ring, tapered rollers, and plastic steel cage must first be assembled into an inner assembly. Unlike other types of cages, plastic steel cages offer excellent characteristics such as high production volume, low running resistance, and self-lubrication. However, when assembling tapered roller bearings using plastic steel cages, a press is required to press the bearing inner ring into the inner assembly. During the assembly process, a large number of tapered rollers are manually loaded into the plastic steel cage in stages. During this process, the tapered rollers are prone to tipping over due to vibration and other factors, requiring reloading before being pressed into the bearing inner ring.
[0003] In the early stages of production, a simple tooling was designed for the press-fitting of the inner components of tapered roller bearings with plastic steel cages. This tooling relied on an extremely thin support wall inserted into the gap between the plastic steel cage and the bearing inner ring to support the tapered rollers and prevent them from tipping over. However, this simple tooling had a very short lifespan due to its low hardness and excessively thin support wall. When it was scrapped, the support wall would curl, and in severe cases, the curled edge could scratch the plastic steel cage during operation. The simple tooling could not improve hardness and strength, which could lead to contact with the rollers during assembly. The specific structure is shown in the figure below. Summary of the Invention
[0004] In view of the fact that simple tooling has a short service life and cannot meet the needs of mass production, the purpose of this utility model is to design a low-wear, long-life tapered roller plastic steel cage bearing internal component press-fitting device that fully meets the production assembly requirements.
[0005] To achieve the above objectives, the present invention provides a pressing device for the inner component of a tapered roller bearing with a plastic steel cage, comprising a base, a top cover, and a follower disc; the top cover is an annular structure, fixedly connected to the base, and used to support the plastic steel cage; the follower disc is an annular structure, slidingly mounted on the base in a vertical direction, and its bottom is connected to the base via several elastic elements, which buffer the downward movement of the follower disc and restore its position; the follower disc supports the inner ring of the bearing; a central guide sleeve is formed on the base, and the inner ring of the bearing is assembled outside the central guide sleeve and moves vertically along the central guide sleeve.
[0006] Furthermore, the upper cover is used to support the small end of the plastic steel cage. The upper surface of the upper cover is provided with an upwardly protruding positioning flange on the inner diameter side. The positioning flange mates with the inner diameter surface of the small end of the plastic steel cage to position the radial position of the plastic steel cage.
[0007] Furthermore, the top of the upper cover extends radially along the inner diameter side to form an upper cover limiting stop, and the bottom of the follower disk extends radially along the outer diameter side to form a follower disk limiting stop. The upper cover limiting stop and the follower disk limiting stop cooperate to limit the follower disk to the extreme position above.
[0008] Furthermore, the follower disk is fitted onto the outer wall of the central guide sleeve, and the follower disk is positioned between the central guide sleeve and the upper cover.
[0009] Furthermore, the outer wall of the lower part of the central guide sleeve forms an outwardly protruding step portion, which is used to limit the extreme position of the follower disk at the bottom.
[0010] Furthermore, the base includes a bottom platform and a central guide sleeve disposed at the center of the bottom platform, the bottom platform and the central guide sleeve being integrally formed; the upper cover is detachably connected to the bottom platform of the base.
[0011] Furthermore, the upper cover and the bottom platform are detachably connected by several connecting screws.
[0012] Furthermore, the elastic element is a spring, with the upper end of the spring abutting against the bottom surface of the follower disk and the lower end of the spring abutting against the upper surface of the base.
[0013] Furthermore, there are eight springs, evenly distributed in a ring between the central guide sleeve and the upper cover.
[0014] Furthermore, the follower disk supports the small end of the inner ring of the bearing.
[0015] The beneficial effects of this invention are as follows: During the pressing process of the inner component, the bearing inner ring moves downward under the action of the press. After the bearing inner ring reaches a certain depth, it contacts the top of the follower plate of the device. The follower plate begins to move downward under pressure, simultaneously compressing the elastic element inside the device. When the inner component is pressed, the bearing inner ring reaches the accurate position, the press is withdrawn, and the inner component is pushed out of the device by the spring. Because the device has an internal elastic element, it provides cushioning during the descent of the bearing inner ring, preventing damage from impacts that could affect the appearance of the finished bearing. This device ensures that the tapered roller bearing with plastic steel cage does not tip over during the assembly and pressing process, and provides guidance and cushioning during the pressing of the bearing inner ring. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of a simple tooling in the background art;
[0017] Figure 2 This is a schematic diagram of the internal component press-fitting device for tapered roller plastic steel cage bearings of this utility model;
[0018] Figure 3 This is the working state of the internal component press-fitting device for tapered roller plastic steel cage bearings of this utility model. Figure 1 ;
[0019] Figure 4 This is the working state of the internal component press-fitting device for tapered roller plastic steel cage bearings of this utility model. Figure 2 ;
[0020] In the picture:
[0021] 1. Top cover; 101. Positioning flange; 102. Top cover limiting stop;
[0022] 2. Follower plate; 201. Follower plate limit stop;
[0023] 3. Base; 301. Central guide sleeve; 3011. Stepped section; 302. Bottom platform;
[0024] 4. Spring,
[0025] 5. Connecting screws,
[0026] 6. Supporting plastic-steel cage,
[0027] 7. Tapered rollers,
[0028] 8. Inner ring of the bearing. Detailed Implementation
[0029] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0030] See appendix Figure 2-4A pressing device for the inner component of a tapered roller bearing with a plastic steel cage includes a base 3, an upper cover 1, and a follower plate 2. The upper cover 1 has an annular structure and is fixedly connected to the base 3. The upper cover 1 supports the small end of the plastic steel cage 6, with the small end of the cage 6 placed downwards on the upper cover 1. The follower plate 2 has an annular structure and is slidably mounted on the base 1 in a vertical direction. The bottom of the follower plate 2 is connected to the base 1 by eight springs 4. The springs 4 are used to buffer the downward movement of the follower plate 2 and to restore the position of the follower plate 2. The follower plate 2 supports the small end of the inner ring 8 of the bearing, with the small end of the inner ring 8 assembled downwards. A central guide sleeve 301 is formed on the base 3. The inner ring 8 of the bearing is assembled outside the central guide sleeve 301 and moves vertically along the central guide sleeve 301. The follower plate 2 is fitted onto the outer wall of the central guide sleeve 301 and is disposed between the central guide sleeve 301 and the upper cover 1.
[0031] Furthermore, the upper surface of the upper cover 1 is provided with an upwardly protruding positioning flange 101 on the inner diameter side. The positioning flange 101 mates with the inner diameter surface of the small end of the supporting plastic steel retainer 6 to position the radial position of the plastic steel retainer 6.
[0032] Furthermore, the top of the upper cover 1 has a radially extending upper cover limiting stop 102 on the inner diameter side, and the bottom of the follower disk 2 has a radially extending follower disk limiting stop 201 on the outer diameter side. The upper cover limiting stop 102 and the follower disk limiting stop 201 cooperate to restrict the follower disk 2 from moving to the upper limit position. The positioning flange 102 is located above the inner diameter side of the upper cover limiting stop 102.
[0033] Furthermore, the outer wall of the lower part of the central guide sleeve 301 forms a protruding step portion 3011, which is used to limit the movement of the follower disk 2 to the lower limit position. The step portion 3011 acts as a stop at the bottom of the elastic element, limiting the pressing depth of the inner ring, preventing hard contact between the tapered roller and the inner ring, and reducing the occurrence of impact damage.
[0034] Furthermore, the base 3 includes a bottom platform 302 and a central guide sleeve 301 disposed at the center of the bottom platform, the bottom platform 302 and the central guide sleeve 301 being integrally formed; the upper cover 1 is detachably connected to the bottom platform 302 of the base by a plurality of connecting screws 5.
[0035] Furthermore, eight springs 4 are evenly distributed in a ring between the central guide sleeve 301 and the upper cover 1. The upper end of the spring 4 abuts against the bottom surface of the follower disk 2, and the lower end of the spring 4 abuts against the upper surface of the bottom platform 302.
[0036] Based on the structural characteristics of the internal components of a tapered roller bearing with a plastic steel cage, this invention provides a press-fitting device for the internal components of a tapered roller bearing with a plastic steel cage. This device requires designing the corresponding fitting dimensions for each part according to the dimensions of the internal components of the tapered roller bearing with a plastic steel cage, such as... Figure 2 As shown. When press-fitting the inner assembly of the tapered roller bearing with a plastic steel cage, first place the plastic steel cage 6 on top of the upper cover 1 of the device. The upper cover 1 has a positioning flange 101 on top to fix the position of the cage 6. Then, the tapered rollers 7 are filled into the cage 6. During the filling process, the end faces of the tapered rollers 7 are stably supported by the follower plate 2, so the tapered rollers will not tilt. Finally, the inner ring 8 of the bearing is placed into the inner assembly for press-fitting, as shown. Figure 3 As shown. During the internal component pressing process, the bearing inner ring 8 moves downward under pressure. After the bearing inner ring 8 reaches a certain depth, it contacts the top of the follower plate 2 of the device. The follower plate 2 begins to move downward under the action of the press, simultaneously compressing the spring 4 inside the device. When the internal component pressing is completed, the bearing inner ring 8 reaches the accurate position, the press is withdrawn, and the internal component is pushed out of the device by the spring 4. Because the device is designed with a spring, it provides cushioning during the descent of the bearing inner ring, preventing damage from impacts that could affect the appearance of the finished bearing. Figure 4 As shown. The base 3 of this device is also designed with a central guide sleeve 301 to help guide the inner ring of the bearing to move downward, preventing tilting that could cause pressing failure and damage to the bearing's appearance.
[0037] It should be noted that the parts of this utility model not described in detail are existing technologies.
[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0041] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0042] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0043] The above-listed embodiments are merely preferred embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.
Claims
1. A press-fitting device for the inner component of a tapered roller bearing with a plastic steel cage, characterized in that: The device includes a base, a top cover, and a follower plate. The top cover is an annular structure and is fixedly connected to the base, serving to support a plastic steel retainer. The follower plate is also an annular structure, sliding vertically on the base. The bottom of the follower plate is connected to the base via several elastic elements, which buffer the downward movement of the follower plate and help it return to its original position. The follower plate supports the inner ring of a bearing. A central guide sleeve is formed on the base, and the inner ring of the bearing is fitted onto the central guide sleeve and moves vertically along it.
2. The pressing device for the inner component of a tapered roller bearing with a plastic steel cage according to claim 1, characterized in that: The upper cover is used to support the small end of the plastic steel cage. The upper surface of the upper cover has an upwardly protruding positioning flange on the inner diameter side. The positioning flange mates with the inner diameter surface of the small end of the plastic steel cage to position the plastic steel cage.
3. The pressing device for the inner component of a tapered roller bearing with a plastic steel cage according to claim 1 or 2, characterized in that: The top of the upper cover extends radially along the inner diameter side to form an upper cover limiting stop, and the bottom of the follower disk extends radially along the outer diameter side to form a follower disk limiting stop. The upper cover limiting stop and the follower disk limiting stop cooperate to limit the follower disk to the extreme position above.
4. The pressing device for the inner component of a tapered roller bearing with a plastic steel cage according to claim 1, characterized in that: The follower disk is mounted on the outer wall of the central guide sleeve, and the follower disk is positioned between the central guide sleeve and the upper cover.
5. The pressing device for the inner component of a tapered roller bearing with a plastic steel cage according to claim 4, characterized in that: The outer wall of the lower part of the central guide sleeve forms an outwardly protruding step, which is used to limit the extreme position of the follower disk at the bottom.
6. The pressing device for the inner assembly of a tapered roller bearing with a plastic steel cage according to claim 1, characterized in that: The base includes a bottom platform and a central guide sleeve disposed at the center of the bottom platform, the bottom platform and the central guide sleeve being integrally formed; the top cover is detachably connected to the bottom platform of the base.
7. The pressing device for the inner component of a tapered roller bearing with a plastic steel cage according to claim 6, characterized in that: The top cover and the bottom platform are detachably connected by several connecting screws.
8. The pressing device for the inner component of a tapered roller bearing with a plastic steel cage according to claim 1, characterized in that: The elastic element is a spring, with the upper end of the spring abutting against the bottom surface of the follower disk and the lower end of the spring abutting against the upper surface of the base.
9. The pressing device for the inner assembly of a tapered roller bearing with a plastic steel cage according to claim 8, characterized in that: There are eight springs, which are evenly distributed in a ring between the central guide sleeve and the upper cover.
10. The pressing device for the inner assembly of a tapered roller bearing with a plastic steel cage according to claim 1, characterized in that: The follower disc supports the small end of the inner ring of the bearing.