Locking point die for self-aligning bearing roller retainer

Abstract

The utility model discloses a self-aligning bearing roller retainer locking point die, which belongs to the field of self-aligning bearings and comprises an upper die assembly and a lower die assembly. The upper die assembly comprises an upper die base and a forming male die. The lower die assembly comprises a lower die base, a supporting bottom plate and a forming female die. A positioning shaft perpendicular to the forming female die is arranged in the supporting bottom plate, a positioning disc is assembled on the positioning shaft, the size of the positioning disc is matched with the size of a small end ring of the retainer, the small end ring of the retainer is tightly attached to the positioning disc, and a large end ring of the retainer can be positioned between the forming female die and the forming male die. The detachable positioning block is arranged at the bottom of the supporting bottom plate, the width of the positioning block is matched with the width of a window hole of the retainer, the positioning block starts punching after entering any pocket hole of the retainer, the positioning process of the retainer is simplified by arranging the positioning disc and the positioning block, the time and difficulty of manual adjustment are reduced, machining flaws are reduced, and the machining efficiency is improved. And the overall quality of products is improved.

Description

Technical Field

[0001] The present application relates to the field of self-aligning bearings, and in particular to a self-aligning bearing roller cage locking point mold. Background Art

[0002] Thrust spherical roller bearings are separable bearings. Their load action line forms a certain angle with the bearing axis. They have strong axial load-bearing capacity and can withstand a certain radial load while bearing axial loads. This type of bearing is mainly used in oil drilling rigs, iron and steel making machinery, hydraulic generators, vertical motors, ship propeller shafts, tower cranes, extruders, injection molding machines, marine diesel engines, reducers, etc.

[0003] As a key component of thrust spherical roller bearings, the cage has a complex structure and an inclination angle. Figure 1 Multiple locking points are set on the upper end of the cage to lock the inner ring to ensure the stable operation of the bearing. During the manufacturing process, the cage needs to go through multiple steps, including precise forming, punching holes, pressing slopes and pressing locking points. Among them, the pressing locking point process is directly related to whether the cage can tightly lock the inner ring to prevent it from falling off, and maintain an appropriate gap in the axial direction to ensure that the inner ring is stable and does not shake, but can also rotate flexibly without locking, thereby maintaining the efficient and smooth operation of the bearing.

[0004] However, the currently used press-locking molds rely on manual positioning during operation, which is not only inefficient but also labor-intensive. Furthermore, uneven localized pressure on the retainer during the press-locking process can cause unnecessary rotation, leading to processing defects and impacting the quality of the final product. Therefore, optimizing the press-locking mold design, reducing manual intervention, and improving processing accuracy and stability have become key areas for improving the manufacturing of thrust spherical roller bearings. This demonstrates the need for further improvement and advancement of existing technologies. Utility Model Content

[0005] The utility model provides a locking point mold for a spherical bearing roller cage. It aims to solve the problem of low efficiency of the pressing point mold in the pressing point locking process of a thrust spherical roller bearing cage due to manual positioning. The mold structure is optimized, manual intervention is reduced, and the processing accuracy and stability of the pressing point are improved.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A self-aligning bearing roller cage locking point mold, comprising an upper mold assembly and a lower mold assembly;

[0008] The upper die assembly includes an upper die base and a forming punch, and the lower die assembly includes a lower die base, a supporting base plate and a forming die; a positioning shaft perpendicular to the forming die is provided in the supporting base plate, and the positioning shaft is equipped with a positioning plate, the size of the positioning plate is adapted to the size of the small end ring of the retainer, and the small end ring of the retainer is set close to the positioning plate, so that the large end ring of the retainer can be positioned between the forming die and the forming punch; a detachable positioning block is provided at the bottom of the supporting base plate, and the width of the positioning block is adapted to the width of the retainer window hole. After the positioning block enters any pocket hole of the retainer, the stamping action is started, which can make the locking point position of the retainer accurately correspond to the center of the pocket hole or the window beam, so as to improve the accuracy and stability of the locking point.

[0009] The self-aligning bearing roller cage locking point mold of the present application is provided with a positioning plate and a positioning block. The positioning plate size is precisely adapted to the small end ring of the cage, so that the cage can quickly and accurately fit with the positioning plate when placed. At this time, the large end ring can be stably positioned between the forming die and the forming punch, simplifying the positioning process of the cage and reducing the time and difficulty of manual adjustment. The detachable positioning block provided at the bottom of the supporting base plate has a width that matches the width of the cage window hole and can accurately enter any pocket hole, thereby fixing the position of the pocket hole. The symmetrical pocket hole or window beam, i.e., the locking point position, is also naturally accurately positioned. It ensures that each time the locking point is operated, the forming punch / die can accurately align with the center of the pocket hole or window beam, thereby improving the accuracy of the locking point. Through the dual positioning mechanism of the positioning plate and the positioning block, the cage can maintain a stable posture during the locking point process, avoiding rotation or offset caused by uneven local pressure. This stability not only helps to improve the quality of the locking point, but also reduces the occurrence of processing defects and improves the overall quality of the product.

[0010] In a preferred implementation, the outer side of the positioning plate is detachably connected to a fastening pressure plate to fix the retaining frame.

[0011] After the small end ring of the retainer is placed on the positioning plate, the tightening pressure plate is installed and tightened, thereby firmly clamping the retainer between the positioning plate and the tightening pressure plate. This clamping method is not only stable and reliable, but also avoids the need for manual continuous pressing of the retainer, reducing the labor intensity of workers.

[0012] In a preferred implementation, the support base plate is provided with a mounting groove, and the positioning block is detachably provided in the mounting groove.

[0013] In a preferred implementation, the lower mold assembly also includes a positioning base, the positioning base is arranged on the upper side of the support base and the forming die is arranged on the upper side of the positioning base, the positioning base is provided with a guide hole, and the upper mold assembly is also provided with a guide column, and the guide column and the guide hole are cooperatively connected.

[0014] In a preferred implementation, the forming die is detachably connected to the positioning base.

[0015] In a preferred implementation, the forming die is arc-shaped and its curvature matches the curvature of the large end ring of the retaining frame. The arc-shaped forming die is provided with a central forming groove and avoidance grooves on both sides of the forming groove. The shapes of the forming groove and the avoidance groove match the shape of the locking point.

[0016] The forming die is designed to be arc-shaped, and its curvature matches that of the retainer's large end ring, ensuring that the forming die can closely fit the curved surface of the retainer's large end ring, thereby providing stable support and positioning during the locking point pressing process. A forming groove is provided at the center of the arc-shaped forming die, and avoidance grooves are also provided on both sides of the forming groove. The shape and size of the forming groove and avoidance groove match the required locking point shape to ensure a precise and regular locking point structure can be formed during the locking point pressing process. The avoidance groove is designed to allow the locking point to enter the avoidance groove after pressing, avoiding damage to the already pressed locking point. This is particularly beneficial when continuing to press locking points on both sides of the first locking point.

[0017] In a preferred implementation, the spacing between the avoidance groove and the forming groove is adapted to the spacing between the centers of adjacent pockets of the retaining frame or adjacent window beams.

[0018] After the mold completes pressing a locking point, it smoothly enters the avoidance groove. Simultaneously, the next locking point to be pressed aligns with the next critical position of the retainer, namely the center of the adjacent pocket or the corresponding window beam. After the first locking point is pressed and moves into the avoidance groove, the mold's forming groove automatically aligns with the next locking point to be pressed, reducing the time and error of manual adjustment of the retainer position, thereby improving production efficiency and processing accuracy.

[0019] In a preferred implementation, the positioning shaft is provided with a shaft sleeve, the shaft sleeve can move horizontally along the positioning shaft, and the positioning disk is rotatably sleeved on the outside of the shaft sleeve.

[0020] Through the horizontal movement of the sleeve and the rotation of the positioning plate, the locking point pressing position can be quickly switched to improve the pressing efficiency.

[0021] In a preferred implementation, the shaft sleeve and the positioning plate are detachably connected to the positioning shaft.

[0022] In a preferred implementation, the positioning shaft is provided with a positioning hole, in which a limit pin is detachably connected. When the sleeve abuts against the limit pin, the large end ring of the retainer is positioned in the working area between the forming die and the forming punch.

[0023] The above structure has the following beneficial effects:

[0024] The mold is rationally designed and easy to operate. Workers can quickly complete the positioning and pressing of key locking points. By simply removing the positioning blocks, adjusting the retaining frames and replacing the pockets, they can complete the pressing of all locking points in sequence. This continuous operation method significantly improves production efficiency and reduces labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present application and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 A schematic structural diagram of a schematic embodiment of a spherical bearing roller cage being assembled on a spherical bearing is depicted;

[0027] Figure 2 A schematic diagram of the three-dimensional structure of a locking point mold is depicted;

[0028] Figure 3 A schematic structural diagram of a schematic embodiment of a forming die is depicted;

[0029] Figure 4 A schematic cross-sectional view of a locking point mold is shown;

[0030] Description of labels:

[0031] 1-upper die base; 2-forming punch; 3-guide column; 4-lower die base; 5-support base plate; 6-forming die; 60-forming groove; 61-avoidance groove; 7-positioning shaft; 70-sleeve; 71-positioning hole; 8-positioning block; 9-positioning plate; 90-fastening pressure plate; 10-positioning base; 11-cage; 110-locking point; 111-small end ring; 112-large end ring. DETAILED DESCRIPTION

[0032] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0033] In the description of the present invention, it should be understood that the terms "center," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "axial," "radial," "circumferential," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the present invention, unless otherwise expressly specified or limited, a first feature being "up" or "down" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0034] In this utility model, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integration; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or an interaction between two components. However, the phrase "direct connection" indicates that the two connected entities are not connected through an intermediate structure, but are connected to form a whole through a connecting structure. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0035] In this utility model, terms such as "first," "second," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0036] The present invention will be described below with reference to the accompanying drawings.

[0037] The specific plans adopted are:

[0038] like Figure 2-4 As shown, the utility model provides a self-aligning bearing roller cage locking point mold, including an upper mold assembly and a lower mold assembly;

[0039] The upper die assembly includes an upper die base 1 and a forming punch 2, and the lower die assembly includes a lower die base 4, a supporting base plate 5 and a forming die 6; a positioning shaft 7 perpendicular to the forming die is provided in the supporting base plate 5, and the positioning shaft is equipped with a positioning plate 9, the size of the positioning plate is adapted to the size of the small end ring 111 of the retainer, and the small end ring of the retainer 11 is set close to the positioning plate, so that the large end ring 112 of the retainer can be positioned between the forming die and the forming punch; a detachable positioning block is provided at the bottom of the supporting base plate, and the width of the positioning block is adapted to the width of the retainer window hole. After the positioning block enters any pocket hole of the retainer, the stamping action is started, which can make the locking point position of the retainer accurately correspond to the center of the pocket hole or the window beam, so as to improve the accuracy and stability of the locking point.

[0040] The self-aligning bearing roller cage locking point mold of the present application has a positioning plate size that precisely fits the cage small end ring, allowing the cage to quickly and accurately fit the positioning plate when placed. At this time, the large end ring can be stably positioned between the forming die and the forming punch, simplifying the positioning process of the cage and reducing the time and difficulty of manual adjustment. The detachable positioning block provided at the bottom of the supporting base plate has a width that matches the width of the cage window hole and can accurately enter any pocket hole, thereby fixing the position of the pocket hole. The symmetrical pocket hole or window beam, i.e., the locking point position, is also naturally accurately positioned. This ensures that each time the locking point is operated, the forming punch / die can accurately align with the center of the pocket hole or window beam, thereby improving the accuracy of the locking point. Through the dual positioning mechanism of the positioning plate and the positioning block, the cage can maintain a stable posture during the locking point process, avoiding rotation or offset caused by uneven local pressure. This stability not only helps to improve the quality of the locking point, but also reduces the occurrence of processing defects and improves the overall quality of the product.

[0041] Workers can quickly complete the pressing of one locking point and then, by simply removing the positioning block, adjusting the retainer, and replacing the pocket, complete the pressing of all locking points 110 in sequence. This continuous operation significantly improves production efficiency and reduces labor intensity.

[0042] As a preferred embodiment of the present application, the outer side of the positioning plate 9 is detachably connected to the fastening plate 90 to fix the retaining frame. The fastening plate can be detachably connected to the outer side of the positioning plate by bolts, forming a clamping structure. When the small end ring of the retaining frame is placed on the positioning plate, the fastening plate is installed and tightened, thereby firmly clamping the retaining frame between the positioning plate and the fastening plate. This clamping method is not only stable and reliable, but also avoids the need for manual continuous pressing of the retaining frame 11, reducing the labor intensity of the workers. Because the fastening plate and the positioning plate act together on the small end ring of the retaining frame, the retaining frame can maintain a more stable posture during the pressing and locking process. This stability helps to reduce positioning deviations caused by vibration or external force interference, thereby improving the accuracy and consistency of the pressing and locking points.

[0043] See also Figure 2 and 3 The supporting base plate 5 is provided with a mounting groove, and the positioning block 8 is detachably arranged in the mounting groove. The shape and size of the mounting groove match the positioning block. When installing the positioning block, the worker only needs to align the positioning block with the entrance of the mounting groove and then push it horizontally along the direction of the groove. Due to the guiding effect of the mounting groove, the positioning block can smoothly enter and stay in the predetermined position. When the upper part of the positioning block completely enters the pocket, the precise positioning of the cage pocket is achieved.

[0044] As a preferred embodiment of this application, see Figure 2 The lower mold assembly also includes a positioning base 10, which is arranged on the upper side of the supporting base and the forming die is arranged on the upper side of the positioning base. The positioning base is provided with a guide hole, and the upper mold assembly is also provided with a guide column 3. The guide column and the guide hole are matched and connected to guide and position the upper mold assembly. When the upper mold assembly moves downward to perform the locking point operation, the guide column will slide along the guide hole to ensure that the upper mold assembly will not deviate or tilt in the vertical direction, thereby improving the accuracy and stability of the mold and reducing the occurrence of processing defects and defective products caused by position deviation.

[0045] As a preferred embodiment of the present application, the forming die 6 is detachably connected to the positioning base. When the forming die becomes worn or damaged due to long-term use, the detachable design makes replacement and maintenance simple and quick. Workers do not need to dismantle the entire mold structure; they only need to remove the damaged forming die and install a new one. This greatly reduces the difficulty and time cost of maintenance. Moreover, by replacing forming dies of different sizes, the mold can easily adapt to the processing requirements of cages of different specifications and sizes. This avoids the need to produce a complete set of molds for each cage specification, greatly reducing the manufacturing cost and storage space required for the mold.

[0046] As a preferred embodiment of this application, see Figure 2 The forming die 6 is designed to be arc-shaped, and its curvature matches the curvature of the retainer big end ring, ensuring that the forming die can closely fit the curved surface of the retainer big end ring, thereby providing stable support and positioning during the locking point pressing process. A forming groove 60 is provided at the center of the arc-shaped forming die, and at the same time, avoidance grooves 61 are provided on both sides of the forming groove. The shape and size of the forming groove and the avoidance groove match the required locking point shape to ensure that a precise and regular locking point structure can be formed during the locking point pressing process. The avoidance groove is designed to allow a locking point to enter the avoidance groove after pressing, avoiding damage to the already pressed locking point. This is particularly beneficial when continuing to press locking points on both sides of the first locking point.

[0047] Furthermore, the spacing between the avoidance groove and the forming groove is adapted to the spacing between the centers of adjacent retainer pockets or adjacent window beams. This adaptive design ensures that after the mold presses a locking point, it smoothly enters the avoidance groove. At the same time, the position of the next locking point to be pressed is precisely aligned with the next key position of the retainer: the center of the adjacent pocket or the corresponding window beam. After the first locking point is pressed and moves into the avoidance groove, the mold's forming groove is automatically aligned with the position of the next locking point to be pressed. This reduces the time and error of manual adjustment of the retainer position, improving production efficiency and processing accuracy.

[0048] As a preferred embodiment of the present application, the positioning shaft is provided with a sleeve 70, which can move horizontally along the positioning shaft, and a positioning disk is rotatably sleeved on the outside of the sleeve. Specifically, after pressing the first locking point, the positioning block is unloaded, and the sleeve is moved horizontally to drive the positioning disk away from the forming die, so that the first locking point pressed leaves the forming groove. While the sleeve remains stationary, the positioning disk is rotated so that the first locking point can correspond to the position of an avoidance groove. The sleeve is moved horizontally again to drive the positioning disk close to the forming die until the first locking point is completely located in the avoidance groove. At this time, the forming groove is empty and the pressing operation of the next locking point can be continued. By the horizontal movement of the sleeve and the rotation of the positioning disk, the locking point pressing position can be quickly switched, thereby improving the pressing efficiency.

[0049] Furthermore, the shaft sleeve and the positioning plate are detachably connected to the positioning shaft, which can adapt to the processing requirements of cages of different specifications and shapes.

[0050] As a preferred embodiment of this embodiment, see Figure 4 Positioning shaft 7 is provided with a positioning hole 71, into which a stop pin is removably connected. When the sleeve abuts the stop pin, the retainer's large end ring is positioned within the working area between the forming die and the punch. Specifically, when the sleeve pushes the positioning plate toward the forming die, once the sleeve abuts the stop pin, it prevents the sleeve from moving forward. The provision of the stop pin ensures that the retainer's large end ring is precisely positioned within the working area between the forming die and the punch. The location and number of the positioning holes and stop pins are determined according to the specific requirements of the mold.

[0051] Anything not described in this utility model can be achieved by adopting or drawing on existing technologies.

[0052] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and such variations or substitutions are intended to fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A self-aligning bearing roller cage locking point mold, characterized in that: including an upper mold assembly and a lower mold assembly; The upper die assembly includes an upper die base and a forming punch, and the lower die assembly includes a lower die base, a supporting base plate and a forming die; a positioning shaft perpendicular to the forming die is provided in the supporting base plate, and the positioning shaft is equipped with a positioning plate, the size of the positioning plate is adapted to the size of the small end ring of the retainer, and the small end ring of the retainer is set close to the positioning plate, so that the large end ring of the retainer can be positioned between the forming die and the forming punch; a detachable positioning block is provided at the bottom of the supporting base plate, and the width of the positioning block is adapted to the width of the retainer window hole. After the positioning block enters any pocket hole of the retainer, the stamping action is started, which can make the locking point position of the retainer accurately correspond to the center of the pocket hole or the window beam, so as to improve the accuracy and stability of the locking point.

2. The self-aligning bearing roller cage locking point mold according to claim 1, characterized in that: The outer side of the positioning plate is detachably connected to the fastening pressure plate to fix the retaining frame.

3. The self-aligning bearing roller cage locking point mold according to claim 1, characterized in that: The supporting base plate is provided with an installation groove, and the positioning block is detachably arranged in the installation groove.

4. The self-aligning bearing roller cage locking point mold according to claim 1, characterized in that: The lower mold assembly also includes a positioning base, which is arranged on the upper side of the supporting base and the forming die is arranged on the upper side of the positioning base. The positioning base is provided with a guide hole, and the upper mold assembly is also provided with a guide column, which is cooperatively connected with the guide hole.

5. The self-aligning bearing roller cage locking point mold according to claim 4, characterized in that: The forming die is detachably connected to the positioning base.

6. The self-aligning bearing roller cage locking point mold according to claim 1, characterized in that: The forming die is arc-shaped and its curvature is adapted to the curvature of the large end ring of the retaining frame. The arc-shaped forming die is provided with a central forming groove and avoidance grooves on both sides of the forming groove. The shapes of the forming groove and the avoidance groove are adapted to the shape of the locking point.

7. The self-aligning bearing roller cage locking point mold according to claim 6, characterized in that: The distance between the avoidance groove and the forming groove is adapted to the distance between the centers of adjacent pockets of the retaining frame or adjacent window beams.

8. The self-aligning bearing roller cage locking point mold according to claim 1, characterized in that: The positioning shaft is provided with a shaft sleeve, which can move horizontally along the positioning shaft, and the positioning disk is rotatably sleeved on the outside of the shaft sleeve.

9. The self-aligning bearing roller cage locking point mold according to claim 8, characterized in that: The shaft sleeve and the positioning plate are detachably connected to the positioning shaft.

10. The self-aligning bearing roller cage locking point mold according to claim 8, characterized in that: The positioning shaft is provided with a positioning hole, in which a limiting pin is detachably connected. When the shaft sleeve abuts against the limiting pin, the large end ring of the retainer is positioned in the working area between the forming die and the forming punch.

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